UC3705中文资料

UC2855A/B UC3855A/BDESCRIPTIONThe UC1855A/B provides all the control features necessary for high power,high frequency PFC boost converters.The average current mode control method allows for stable,low distortion AC line current program-ming without the need for slope compensation.In addition,the UC1855utilizes an active snubbing or ZVT (Zero Voltage Transition technique)to dramatically reduce diode recovery and MOSFET turn-on losses,result-ing in lower EMI emissions and higher efficiency.Boost converter switch-ing frequencies up to 500kHz are now realizable,requiring only an additional small MOSFET,diode,and inductor to resonantly soft switch the boost diode and switch.Average current sensing can be employed us-ing a simple resistive shunt or a current sense ing the cur-rent sense transformer method,the internal current synthesizer circuit buffers the inductor current during the switch on-time,and reconstructs the inductor current during the switch off-time.Improved signal to noise ratio and negligible current sensing losses make this an attractive solution for higher power applications.The UC1855A/B also features a single quadrant multiplier,squarer,and divider circuit which provides the programming signal for the current loop.The internal multiplier current limit reduces output power during low line conditions.An overvoltage protection circuit disables both controller out-puts in the event of a boost output OV condition.Low startup supply current,UVLO with hysteresis,a 1%7.5V reference,voltage amplifier with softstart,input supply voltage clamp,enable com-parator,and overcurrent comparator complete the list of features.Avail-able packages include:20pin N,DW,Q,J,and L.BLOCKDIAGRAMHigh Performance Power Factor PreregulatorFEATURES•Controls Boost PWM to Near Unity Power Factor•Fixed Frequency Average Current Mode Control Minimizes Line Current Distortion•Built-in Active Snubber (ZVT)allows Operation to 500kHz,improved EMI and Efficiency•Inductor Current Synthesizer allows Single Current Transformer Current Sense for Improved Efficiency and Noise Margin•Accurate Analog Multiplier with Line Compensator allows for Universal Input Voltage Operation•High Bandwidth (5MHz),Low Offset Current Amplifier•Overvoltage and Overcurrent protection•Two UVLO Threshold Options •150µA Startup Supply Current Typical •Precision 1%7.5V Reference6/98License Patent from Pioneer Magnetics.Pin numbers refer to DIL-20J or N packages.UDG-94001-2ABSOLUTE MAXIMUM RATINGSSupply Voltage VCC..........................Internally LimitedVCC Supply Clamp Current.......................20mAPFC Gate Driver Current(continuous)..............±0.5APFC Gate Driver Current(peak)...................±1.5AZVT Drive Current(continuous)...................±0.25AZVT Drive Current(peak).......................±0.75A I nput Current(IAC,R T,RVA).......................5mA Analog Inputs(except Peak Limit)..............−0.3to10VPeak Limit Input...........................−0.3to6.5VSoftstart Sinking Current.........................1.5mAStorage Temperature...................−65°C to+150°CJunction Temperature...................−55°C to+150°CLead Temperature(Soldering,10sec.).............+300°C Currents are positive into,negative out of the specified termi-nal.Consult Packaging Section of Databook for thermal limita-tions and considerations of packages.All voltages are referenced toGND.CONNECTION DIAGRAMSELECTRICAL CHARACTERISTICS:Unless otherwise specified:VCC=18V,R T=15k,RVS=23k,CT=470pF,CI= 150pF,VRMS=1.5V,IAC=100µA,I SENSE=0V,CA OUT=4V,VAOUT=3.5V,VSENSE=3V.T A=T J.T A=–55°C to125°C (UC1855A/B),–40°C to85°C(UC2855A/B),0°C to70°C(UC3855A/B).PARAMETER TEST CONDITIONS MIN TYP MAX UNITS OverallSupply Current,OFF CAO,VAOUT=0V,VCC=UVLO−0.3V150500µA Supply Current,OPERATING1725mA VCC Turn-On Threshold UC1855A15.517.5V VCCTurn-Off Threshold UC1855A,B910V VCC Turn-On Threshold UC1855B10.510.8V VCC Clamp I(VCC)=I CC(on)+5mA182022V Voltage AmplifierInput Voltage 2.9 3.1V VSENSE Bias Current−50025500nA Open Loop Gain V OUT=2to5V6580dB V OUT High I LOAD=–300µA 5.756 6.25V V OUT Low I LOAD=300µA0.30.5V Output Short Circuit Current V OUT=0V0.63mAELECTRICAL CHARACTERISTICS:Unless otherwise specified:VCC=18V,R T=15k,RVS=23k,CT=470pF,CI= 150pF,VRMS=1.5V,IAC=100µA,I SENSE=0V,CA OUT=4V,VAOUT=3.5V,VSENSE=3V.T A=T J.T A=–55°C to125°C (UC1855A/B),–40°C to85°C(UC2855A/B),0°C to70°C(UC3855A/B).PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Current AmplifierInput Offset Voltage V CM=−2.5V−44mV Input Bias Current(Sense)V CM=2.5V−500500nA Open Loop Gain V CM=2.5V,V OUT=2to6V80110dB V OUT High I LOAD=−500µA6V V OUT Low I LOAD=500µA0.30.5V Output Short Circuit Current V OUT=0V13mA Common Mode Range−0.35V Gain Bandwidth Product F IN=100kHz,10mV,P–P,T A=25°C 2.55MHz ReferenceOutput Voltage I REF=0mA,T A=25°C7.3887.57.613VI REF=0mA7.3137.57.688VLoad Regulation I REF=1to10mA−1515mV Line Regulation VCC=15to35V−1010mV Short Circuit Current REF=0V204565mA OscillatorInitial Accuracy T A=25°C170200230kHz Voltage Stability V CC=12to18V1% Total Variation Line,Temp.160240kHz Ramp Amplitude(P–P) 4.9 5.9V Ramp Valley Voltage 1.1 1.6V Enable/OVP/Current LimitEnable Threshold 1.8 2.2V OVP Threshold7.57.66V OVP Hysteresis200400600mV OVP Propagation Delay200ns OVP Input Bias Current V=7.5V110µA PK LIMIT Threshold 1.25 1.5 1.75V PK LIMIT Input Current V PKLIMIT=1.5V100µA PK LIMIT Prop.Delay100ns MultiplierOutput Current-IAC Limited IAC=100µA,VRMS=1V−235−205−175µA Output Current-Zero IAC=0µA−2−0.22µA Output Current-Power Limited VRMS=1.5V,VAOUT=5.5V−250−209−160µA Output Current VRMS=1.5V,VAOUT=2V−26µAVRMS=1.5V VAOUT=5V−190µAVRMS=5V,VAOUT=2V−3µAVRMS=5V,VAOUT=5V−17µA Gain Constant Refer to Note1−0.95−0.85−0.751/V Gate Driver OutputOutput High Voltage l OUT=−200mA,VCC=15V1212.8V Output Low Voltage l OUT=200mA1 2.2V Output Low Voltage l OUT=10mA300500mV Output Low(UVLO)l OUT=50mA,VCC=0V0.9 1.5V Output RISE/FALL Time C LOAD=1nF35ns Output Peak Current C LOAD=10nF 1.5AELECTRICAL CHARACTERISTICS:Unless otherwise specified:VCC =18V,R T =15k,RVS =23k,CT =470pF,CI =150pF ,VRMS =1.5V,IAC =100µA,I SENSE =0V,CA OUT =4V,VAOUT=3.5V,VSENSE =3V.T A =T J.T A =–55°C to 125°C (UC1855A/B),–40°C to 85°C (UC2855A/B),0°C to 70°C (UC3855A/B).PARAMETER TEST CONDITIONS MIN TYP MAX UNITSZVTReset Threshold 2.3 2.6 2.9VInput Bias Current V =2.5V,V CT =0620µA Propagation Delay Measured at ZVTOUT 100ns Maximum Pulse Width 400nsOutput High Voltage l OUT =−100mA,V CC =15V1212.8V Output Low Voltage l OUT =100mA1 2.2V l OUT =10mA300900mV Output Low (UVLO)l OUT =50mA,V CC =0V 0.9 1.5VOutput RISE/FALL Time C LOAD =1nF35ns Output Peak Current C LOAD =10nF0.75A Current SynthesizerI ON to CS OffsetVION =0V 3050mV Cl Discharge Current IAC =50µA 105118140µAIAC =500µA 5µAIAC Offset Voltage 0.30.65 1.1V ION Buffer Slew Rate 10V/µsION Input Bias Current V ION =2V215µA RVS Output Voltage 23k from RVS to GND 2.873 3.13VNote 1:Gain constant (K)=IAC VA V V IMO OUT RMS ••( .)()15 at V RMS =1.5V ,VA OUT =5.5V .PIN DESCRIPTIONSCA −:This is the inverting input to the current amplifier.Connect the required compensation components be-tween this pin and CAOUT.The common mode operating range for this input is between −0.3V and 5V .CAO :This is the output of the wide bandwidth current amplifier and one of the inputs to the PWM duty cycle comparator.The output signal generated by this amplifier commands the PWM to force the correct input current.The output can swing from 0.1V to 7.5V .CI :The level shifted current sense signal is impressed upon a capacitor connected between this pin and GND.The buffered current sense transformer signal charges the capacitor when the boost switch is on.When the switch is off,the current synthesizer discharges the ca-pacitor at a rate proportional to the dI/dt of the boost in-ductor current.In this way,the discharge current is approximately equal to34V RRVS IAC–.Discharging the CI capacitor in this fashion,a “recon-structed”version of the inductor current is generated us-ing only one current sense transformer.CS:The reconstructed inductor current waveform gener-ated on the CI pin is level shifted down a diode drop tothis pin.Connect the current amplifier input resistor be-tween CS and the inverting input of the current amplifier.The waveform on this pin is compared to the multiplier output waveform through the average current sensing current amplifier.The input to the peak current limiting comparator is also connected to this pin.A voltage level greater than 1.5volts on this pin will trip the comparator and disable the gate driver output.CT:A capacitor from CT to GND sets the PWM oscillator frequency according to the following equation:f CT≈•111200.Use a high quality ceramic capacitor with low ESL and ESR for best results.A minimum CT value of 200pF in-sures good accuracy and less susceptibility to circuit lay-out parasitics.The oscillator and PWM are designed to provide practical operation to 500kHz.GND :All voltages are measured with respect to this pin.All bypass and timing capacitors connected to GND should have leads as short and direct as possible.GTOUT:The output of the PWM is a1.5A peak totem pole MOSFET gate driver on GTOUT.A series resistor between GTOUT and the MOSFET gate of at least10 ohms should be used to limit the overshoot on GTOUT. In addition,a low V F Schottky diode should be connected between GTOUT and GND to limit undershoot and possi-ble erratic operation.IAC:This is a current input to the multiplier.The current into this pin should correspond to the instantaneous value of the rectified AC input line voltage.This is accom-plished by connecting a resistor directly between IAC and the rectified input line voltage.The nominal650mV level present on IAC negates the need for any additional com-pensating resistors to accommodate for the zero cross-ings of the line.A current equal to one fourth of the IAC current forms one of the inductor current synthesizer in-puts.IMO:This is the output of the multiplier,and the non-inverting input of the current amplifier.Since this output is a current,connect a resistor between this pin and ground equal in value to the input resistor of the current amplifier. The common mode operating range for this pin is−0.3V to5V.ION:This pin is the current sensing input.It should be connected to the secondary side output of a current sensing transformer whose primary winding is in series with the boost switch.The resultant signal applied to this input is buffered and level shifted up a diode to the CI ca-pacitor on the CI pin.The ION buffer has a source only output.Discharge of the CI cap is enabled through the current synthesizer circuitry.The current sense trans-former termination resistor should be designed to obtain a1V input signal amplitude at peak switch current. OVP:This pin senses the boost output voltage through a voltage divider.The enable comparator input is TTL com-patible and can be used as a remote shutdown port.A voltage level below1.8V,disables V REF,oscillator,and the PWM circuitry via the enable comparator.Between 1.8V and V REF(7.5V)the UC1855is enabled.Voltage levels above7.5V will set the PWM latch via the hystere-tic OVP comparator and disable both ZVTOUT and GTOUT until the OVP level has decayed by the nominal hysteresis of400mV.If the voltage divider is designed to initiate an OVP fault at5%of OV,the internal hysteresis enables normal operation again when the output voltage has reached its nominal regulation level.Both the OVP and enable comparators have direct logical connections to the PWM output and exhibit typical propagation delays of200ns.REF:REF is the output of the precision reference.The output is capable of supplying25mA to peripheral cir-cuitry and is internally short circuit current limited.REF is disabled and low whenever VCC is below the UVLO threshold,and when OVP is below1.8V.A REF“GOOD”comparator senses REF and disables the stage until REF has attained approximately90%of its nominal value.Bypass REF to GND with a0.1µF or larger ce-ramic capacitor for best stability.RVS:The nominal3V signal present on the VSENSE pin is buffered and brought out to the RVS pin.A current pro-portional to the output voltage is generated by connect-ing a resistor between this pin and GND.This current forms the second input to the current synthesizer. VAO:This is the output of the voltage amplifier.At a given input RMS voltage,the voltage on this pin will vary directly with the output load.The output swing is limited from approximately100mV to6V.Voltage levels below 1.5V on this pin will inhibit the multiplier output.VCC:Positive supply rail for the IC.Bypass this pin to GND with a1µF low ESL,ESR ceramic capacitor.This pin is internally clamped to20V.Current into this clamp should be limited to less than10mA.The UC1855A has a 15.5V(nominal)turn on threshold with6volts of hystere-sis while the UC1855B turns on at10.5V with500mV of hysteresis.VRMS:This pin is the feedforward line voltage compen-sation input to the multiplier.A voltage on VRMS propor-tional to the AC input RMS voltage commands the multiplier to alter the current command signal by 1/VRMS2to maintain a constant power balance.The in-put to VRMS is generally derived from a two pole low pass filter/voltage divider connected to the rectified AC input voltage.This feature allows universal input supply voltage operation and faster response to input line fluc-tuations for the PFC boost preregulator.For most de-signs,a voltage level of 1.5V on this pin should correspond to low line,and4.7V for high line.The input range for this pin extends from0to5.5V.VSENSE:This pin is the inverting input of the voltage amplifier and serves as the output voltage feedback point for the PFC boost converter.It senses the output voltage through a voltage divider which produces a nominal3V. The voltage loop compensation is normally connected between this pin and VAO.The VSENSE pin must be above1.5V at25°C,(1.9V at–55°C)for the current syn-thesizer to work properly.PIN DESCRIPTIONS(cont.)ZVS:This pin senses when the drain voltage of the main MOSFET switch has reached approximately zero volts, and resets the ZVT latch via the ZVT comparator.A mini-mum and maximum ZVTOUT pulse width are program-mable from this pin.To directly sense the≈400V drain voltage of the main switch,a blocking diode is connected between ZVS and the high voltage drain.When the drain reaches0V,the level on ZVS is≈0.7V which is below the 2.6V ZVT comparator threshold.The maximum ZVTOUT pulse width is approximately equal to the oscillator blank-ing period time.ZVTOUT:The output of the ZVT block is a750mA peak totem pole MOSFET gate driver on ZVTOUT.Since the ZVT MOSFET switch is typically3X smaller than the main switch,less peak current is required from this out-put.Like GTOUT,a series gate resistor and Schottky di-ode to GND are recommended.This pin may also be used as a high current synchronization output driver.PIN DESCRIPTIONS(cont.)Figure1.Current Amplifier Frequency ResponseFrequencykHzPhaseMargindegreesOpen-LoopGaindB-20204060801001200.1110100100010000 Figure2.Voltage Amplifier GainPhase vs FrequencyFor more information see Unitrode Applications Note U-153.TYPICAL APPLICATIONFigure7.Typical Application UNITRODE CORPORA TION7CONTINENT AL BLVD.•MERRIMACK,NH03054 TEL.(603)424-2410FAX(603)424-3460IMPORTANT NOTICETexas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability.TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements.CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER’S RISK.In order to minimize risks associated with the customer’s applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards.TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI’s publication of information regarding any third party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.Copyright © 1999, Texas Instruments Incorporated。

UC2525A/27A UC3525A/27ARegulating Pulse Width ModulatorsFEATURES•8to 35V Operation•5.1V Reference Trimmed to ±1%•100Hz to 500kHz Oscillator Range •Separate Oscillator Sync Terminal •Adjustable Deadtime Control •Internal Soft-Start •Pulse-by-Pulse Shutdown •Input Undervoltage Lockout with Hysteresis•Latching PWM to Prevent Multiple Pulses•Dual Source/Sink OutputDriversBLOCK DIAGRAMDESCRIPTIONThe UC1525A/1527A series of pulse width modulator integrated circuits are de-signed to offer improved performance and lowered external parts count when used in designing all types of switching power supplies.The on-chip +5.1V ref-erence is trimmed to ±1%and the input common-mode range of the error ampli-fier includes the reference voltage,eliminating external resistors.A sync input to the oscillator allows multiple units to be slaved or a single unit to be synchro-nized to an external system clock.A single resistor between the C T and the dis-charge terminals provides a wide range of dead-time adjustment.These devices also feature built-in soft-start circuitry with only an external timing ca-pacitor required.A shutdown terminal controls both the soft-start circuitry and the output stages,providing instantaneous turn off through the PWM latch with pulsed shutdown,as well as soft-start recycle with longer shutdown commands.These functions are also controlled by an undervoltage lockout which keeps the outputs off and the soft-start capacitor discharged for sub-normal input volt-ages.This lockout circuitry includes approximately 500mV of hysteresis for jit-ter-free operation.Another feature of these PWM circuits is a latch following the comparator.Once a PWM pulse has been terminated for any reason,the out-puts will remain off for the duration of the period.The latch is reset with each clock pulse.The output stages are totem-pole designs capable of sourcing or sinking in excess of 200mA.The UC1525A output stage features NOR logic,giving a LOW output for an OFF state.The UC1527A utilizes OR logic which results in a HIGH output level when OFF .ABSOLUTE MAXIMUM RATINGS(Note1)Supply Voltage,(+V IN)............................+40V Collector Supply Voltage(V C)......................+40V Logic Inputs............................–0.3V to+5.5V Analog Inputs............................–0.3V to+V IN Output Current,Source or Sink...................500mA Reference Output Current........................50mA Oscillator Charging Current........................5mA Power Dissipation at T A=+25°C(Note2)..........1000mW Power Dissipation at T C=+25°C(Note2).........2000mW Operating Junction Temperature..........–55°C to+150°C Storage Temperature Range.............–65°C to+150°C Lead Temperature(Soldering,10seconds).........+300°C Note1:Values beyond which damage may occur.Note2:Consult packaging Section of Databook for thermal limitations and considerations of package.RECOMMENDED OPERATING CONDITIONS (Note3)Input Voltage(+V IN).......................+8V to+35V Collector Supply Voltage(V C)...............+4.5V to+35V Sink/Source Load Current(steady state)........0to100mA Sink/Source Load Current(peak)..............0to400mA Reference Load Current......................0to20mA Oscillator Frequency Range..............100Hz to400kHz Oscillator Timing Resistor..................2kΩto150kΩOscillator Timing Capacitor................001µF to.01µF Dead Time Resistor Range....................0to500ΩOperating Ambient Temperature RangeUC1525A,UC1527A..................–55°C to+125°C UC2525A,UC2527A...................–25°C to+85°C UC3525A,UC3527A.....................0°C to+70°C Note3:Range over which the device is functional and parame-ter limits are guaranteed.CONNECTION DIAGRAMSELECTRICAL CHARACTERISTICS:+V IN =20V,and over operating temperature,unless otherwise specified,T A =T J .PARAMETERTEST CONDITIONSUC1525A/UC2525A UC1527A/UC2527A UC3525A UC3527A UNITSMINTYPMAXMINTYPMAXReference Section Output Voltage T J =25°C 5.055.10 5.15 5.005.10 5.20V Line Regulation V IN =8to 35V 10201020mV Load RegulationI L =0to 20mA 20502050mVTemperature Stability (Note 5)Over Operating Range 20502050Total Output Variation (Note 5)Line,Load,and Temperature 5.005.20 4.955.25V Shorter Circuit Current V REF =0,T J =25°C 8010080100mA Output Noise Voltage (Note 5)10Hz 10kHz,T =25C J ≤°4020040200µVrms Long Term Stability (Note 5)T J =125°C20502050mV Oscillator Section (Note 6)Initial Accuracy (Notes 5&6)T J =25°C ±2±6±2±6%Voltage Stability (Notes 5&6)V IN =8to 35V ±0.3±1±1±2%Temperature Stability (Note 5)Over Operating Range ±3±6±3±6%Minimum Frequency R T =200k Ω,C T =0.1µF 120120Hz Maximum Frequency R T =2k Ω,C T =470pF 400400kHz Current MirrorI RT =2mA1.72.0 2.21.72.0 2.2mA Clock Amplitude (Notes 5&6) 3.0 3.5 3.0 3.5V Clock Width (Notes 5&6)T J =25°C 0.30.5 1.00.30.5 1.0µs Sync Threshold 1.22.0 2.8 1.22.0 2.8V Sync Input CurrentSync Voltage =3.5V 1.02.5 1.02.5mAError Amplifier Section (V CM =5.1V)Input Offset Voltage 0.55210mV Input Bias Current 110110µA Input Offset Current 11µA DC Open Loop Gain R L ≥10M Ω60756075dB Gain-Bandwidth Product(Note 5)A V =0dB,T J =25°C 1212MHz DC Transconductance (Notes 5&7)T J =25°C,30k Ω≤R L ≤1M Ω1.11.5 1.11.5mS Output Low Level 0.20.50.20.5V Output High Level 3.8 5.6 3.8 5.6V Common Mode Rejection V CM =1.5to 5.2V 60756075dB Supply Voltage RejectionV IN =8to 35V50605060dBNote 5:These parameters,although ensured over the recommended operating conditions,are not 100%tested in production.Note 6:Tested at f OSC =40kHz (R T =3.6k W ,C T =0.01m F,R D =0W).Approximate oscillator frequency is defined by:f C R T T D =+10.73R ()Note 7:DC transconductance (g M )relates to DC open-loop voltage gain (A V )according to the following equation:A V =g M R Lwhere R L is the resistance from pin 9to ground .The minimum g M specification is used to calculate minimum A V when the error amplifier output is loaded.ELECTRICAL CHARACTERISTICS:+V IN=20V,and over operating temperature,unless otherwise specified,T A=T J.PARAMETER TEST CONDITIONS UC1525A/UC2525AUC1527A/UC2527AUC3525AUC3527AUNITS MIN TYP MAX MIN TYP MAXPWM ComparatorMinimum Duty-Cycle00% Maximum Duty-Cycle(Note6)45494549% Input Threshold(Note6)Zero Duty-Cycle0.70.90.70.9VMaximum Duty-Cycle 3.3 3.6 3.3 3.6V Input Bias Current(Note5).05 1.0.05 1.0µA Shutdown SectionSoft Start Current V SD=0V,V SS=0V255080255080µA Soft Start Low Level V SD=2.5V0.40.70.40.7V Shutdown Threshold To outputs,V SS=5.1V,T J=25°C0.60.8 1.00.60.8 1.0V Shutdown Input Current V SD=2.5V0.4 1.00.4 1.0mA Shutdown Delay(Note5)V SD=2.5V,T J=25°C0.20.50.20.5µs Output Drivers(Each Output)(V C=20V)Output Low Level I SINK=20mA0.20.40.20.4VI SINK=100mA 1.0 2.0 1.0 2.0VOutput High Level I SOURCE=20mA18191819VI SOURCE=100mA17181718VUnder-Voltage Lockout V COMP and V SS=High678678V V C OFF Current(Note7)V C=35V200200µA Rise Time(Note5)C L=1nF,T J=25°C100600100600ns Fall Time(Note5)C L=1nF,T J=25°C5030050300ns Total Standby CurrentSupply Current V IN=35V14201420mANote5:These parameters,although ensured over the recommended operating conditions,are not100%tested in production. Note6:Tested at f OSC=40kHz(R T=3.6k W,C T=0.01m F,R D=0W)Note7:Collector off-state quiescent current measured at pin13with outputs low for UC1525A and high for UC1527A.UC3525A/27APRINCIPLES OF OPERATION AND TYPICALCHARACTERISTICSgrounded.The V C terminal is switched to ground by the totem-pole source transistors on alternate oscillatorcycles.drive is controlled by R1-R3.Rapid turn-off times for the power devices are achieved with speed-up capacitors C1andC2.rapid charging of power FET Input capacitance while minimizing externalcomponents.Automatic reset occurs during dead time,when both ends of the primary winding are switched to ground.PRINCIPLES OF OPERATION AND TYPICAL CHARAC-TERISTIC SHUTDOWN OPTIONS(See Block Diagram)Since both the compensation and soft-start terminals (Pins9and8)have current source pull-ups,either can readily accept a pull-down signal which only has to sink a maximum of100µA to turn off the outputs.This is subject to the added requirement of discharging whatever exter-nal capacitance may be attached to these pins.An alternate approach is the use of the shutdown circuitry of Pin10which has been improved to enhance the avail-able shutdown options.Activating this circuit by applying a positive signal on Pin10performs two functions;the PWM latch is immediately set providing the fastest turn-off signal to the outputs;and a150µA-current sink begins to discharge the external soft-start capacitor.If the shutdown command is short,the PWM signal is termi-nated without significant discharge of the soft-start ca-pacitor,thus,allowing,for example,a convenient implementation of pulse-by-pulse current limiting.Holding Pin10high for a longer duration,however,will ultimately discharge this external capacitor,recycling slow turn-on upon release.Pin10should not be left floating as noise pickup could conceivably interrupt normal operation.All transitions of the voltage on pin10should be within the time frame of one clock cycle and not repeated at a frequency higher than10clockcycles.T T.D TD TREVISION HISTORYREVISION DATE CHANGESLUS191B6/28/05Updated pin10description in the Principles of Operation and TypicalCharacteristics Shutdown Options Section.IMPORTANT NOTICETexas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. 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UC-5100 Series Hardware User’s ManualEdition 1.1, October 2018/product© 2018 Moxa Inc. All rights reserved.UC-5100 Series Hardware User’s Manual The software described in this manual is furnished under a license agreement and may be used only in accordance withthe terms of that agreement.Copyright Notice© 2018 Moxa Inc. All rights reserved.TrademarksThe MOXA logo is a registered trademark of Moxa Inc.All other trademarks or registered marks in this manual belong to their respective manufacturers.DisclaimerInformation in this document is subject to change without notice and does not represent a commitment on the part of Moxa.Moxa provides this document as is, without warranty of any kind, either expressed or implied, including, but not limited to, its particular purpose. Moxa reserves the right to make improvements and/or changes to this manual, or to the products and/or the programs described in this manual, at any time.Information provided in this manual is intended to be accurate and reliable. However, Moxa assumes no responsibility for its use, or for any infringements on the rights of third parties that may result from its use.This product might include unintentional technical or typographical errors. Changes are periodically made to the information herein to correct such errors, and these changes are incorporated into new editions of the publication.Technical Support Contact Information/supportMoxa AmericasToll-free: 1-888-669-2872 Tel: +1-714-528-6777 Fax: +1-714-528-6778Moxa China (Shanghai office) Toll-free: 800-820-5036Tel: +86-21-5258-9955 Fax: +86-21-5258-5505Moxa EuropeTel: +49-89-3 70 03 99-0 Fax: +49-89-3 70 03 99-99Moxa Asia-PacificTel: +886-2-8919-1230 Fax: +886-2-8919-1231Moxa IndiaTel: +91-80-4172-9088 Fax: +91-80-4132-1045Table of Contents1.Introduction ...................................................................................................................................... 1-1Overview ........................................................................................................................................... 1-2 Model Descriptions .............................................................................................................................. 1-2 Package Checklist ............................................................................................................................... 1-2 Product Features ................................................................................................................................ 1-3 Hardware Block Diagram ..................................................................................................................... 1-3 2.Hardware Introduction...................................................................................................................... 2-1Appearance ........................................................................................................................................ 2-2 LED Indicators .................................................................................................................................... 2-5 Reset Button ...................................................................................................................................... 2-5 Reset to Default Button ....................................................................................................................... 2-5 Real Time Clock .................................................................................................................................. 2-5 Installation Options ............................................................................................................................. 2-6 DIN-Rail Mounting ....................................................................................................................... 2-6Optional DIN-Rail Mounting .......................................................................................................... 2-6 3.Hardware Connection Description ..................................................................................................... 3-1Wiring Requirements ........................................................................................................................... 3-2 Connecting the Power .................................................................................................................. 3-2Grounding the Unit ...................................................................................................................... 3-2 Connecting to the Console Port ............................................................................................................. 3-3 Connecting to the Network ................................................................................................................... 3-3 Connecting to a Serial Device ............................................................................................................... 3-4 Connecting to a DI/DO Device .............................................................................................................. 3-4 Connecting to a CAN Device ................................................................................................................. 3-4 Connecting to a USB Device ................................................................................................................. 3-5 Connecting the Cellular/Wi-Fi Module and Antenna ................................................................................. 3-5 Installing Micro SIM Cards ................................................................................................................... 3-7 Installing the SD Card ......................................................................................................................... 3-8 Adjusting the CAN DIP Switch .............................................................................................................. 3-8 Adjusting Serial Port DIP Switch ........................................................................................................... 3-8 A.Regulatory Approval Statements ....................................................................................................... A-11Introduction The UC-5100 Series embedded computers are designed for industrial automation applications. The computers feature 4 RS-232/422/485 full-signal serial ports with adjustable pull-up and pull-down resistors, dual CAN ports, dual LANs, 4 digital input channels, 4 digital output channels, a SD socket, and a mini PCIe socket for wireless module in a compact housing with convenient front-end access to all these communication interfaces. The following topics are covered in this chapter:❒Overview❒Model Descriptions❒Package Checklist❒Product Features❒Hardware Block DiagramOverviewThe UC-5100 Series embedded computers are designed for industrial automation applications. The computers feature 4 RS-232/422/485 full-signal serial ports with adjustable pull-up and pull-down resistors, dual CANports, dual LANs, 4 digital input channels, 4 digital output channels, a SD socket, and a mini PCIe socket for wireless module in a compact housing with convenient front-end access to all these communication interfaces. Model DescriptionsThe UC-5100 Series includes the following models:•UC-5101-LX: Industrial computing platform with 4 serial ports, 2 Ethernet ports, SD socket, 4 DI, 4 DO, -10 to 60°C operating temperature range•UC-5102-LX: Industrial computing platform with 4 serial ports, 2 Ethernet ports, SD socket, mini PCIe socket, 4 DI, 4 DO, -10 to 60°C operating temperature range•UC-5111-LX: Industrial computing platform with 4 serial ports, 2 Ethernet ports, SD socket, 2 CAN ports,4 DI, 4 DO,-10 to 60°C operating temperature range•UC-5112-LX: Industrial computing platform with 4 serial ports, 2 Ethernet ports, SD socket, mini PCIe socket, 2 CAN ports, 4 DI, 4 DO, -10 to 60°C operating temperature range•UC-5101-T-LX: Industrial computing platform with 4 serial ports, 2 Ethernet ports, SD socket, 4 DI, 4 DO, -40 to 85°C operating temperature range•UC-5102-T-LX: Industrial computing platform with 4 serial ports, 2 Ethernet ports, SD socket, mini PCIe socket, 4 DI, 4 DO, -40 to 85°C operating temperature range•UC-5111-T-LX: Industrial computing platform with 4 serial ports, 2 Ethernet ports, SD socket, 2 CAN ports,4 DI, 4 DO, -40 to 85°C operating temperature range•UC-5112-T-LX: Industrial computing platform with 4 serial ports, 2 Ethernet ports, SD socket, 2 CAN ports, mini PCIe socket, 4 DI, 4 DO, -40 to 85°C operating temperature rangeNOTE The operating temperature range of the wide temperature models is:-40 to 70°C with an LTE accessory installed-10 to 70°C with a Wi-Fi accessory installed.Package ChecklistBefore installing a UC-5100 computer, verify that the package contains the following items:•UC-5100 Series computer•Console cable•Power jack•Quick Installation Guide (printed)•Warranty cardNotify your sales representative if any of the above items are missing or damaged.NOTE The console cable and power jack can be found beneath the molded pulp cushioning inside the product box.Product Features•ARMv7 Cortex-A8 1000 MHz processor•Dual auto-sensing 10/100 Mbps Ethernet ports• 4 software-selectable RS-232/422/485 ports supporting all signals•Dual Industrial CAN 2.0 A/B protocol supported•Moxa Industrial Linux with 10-year superior long term support•Mini PCIe socket for Wi-Fi/Cellular module•Micro SD socket for storage expansion•Supports TPM v2.0 (optional)•-40 to 85°wide temperature range and -40 to 70°C with LTE enabledFor a complete set of specifications, refer to the product datasheet available on the Moxa Website. Hardware Block Diagram2Hardware Introduction The UC-5100 embedded computers are compact and rugged, making them suitable for industrial applications. The LED indicators allow you to monitor performance and identify trouble spots quickly, and the multiple ports can be used to connect a variety of devices. The UC-5100 Series comes with a reliable and stable hardware platform that lets you devote the bulk of your time to application development. In this chapter, we provide basic information about the embedded computer’s hardware and its various components.The following topics are covered in this chapter:❒Appearance❒LED Indicators❒Reset Button❒Reset to Default Button❒Real Time Clock❒Installation OptionsD IN-Rail MountingO ptional DIN-Rail MountingAppearance Front ViewUC-5101UC-5102UC-5111UC-5112Dimensions [units: mm (in)] UC-5101UC-5102UC-5111UC-2112LED IndicatorsThe function of each LED is described in the table below: LED Name Status FunctionPower Green Power is on, and the device is functioning normally OffPower is offReadyYellow OS has been successfully enabled and the device is ready EthernetGreen Steady On: 10 Mbps Ethernet linkBlinking: Data transmission is in progress Yellow Steady On: 100 Mbps Ethernet linkBlinking: Data transmission is in progressOff Transmission speed below 10 Mbps or the cable is not connectedSerial (Tx) Green Serial port is transmitting data Off Serial port is not transmitting data Serial (Rx)Yellow Serial port is receiving data Off Serial port is not receiving dataL1/L2/L3(UC-5102/5112) YellowThe number of glowing LEDs indicates the signal strength. All LEDs: Excellent L1 & L2 LEDS : Good L1 LED : PoorOffNo wireless module detectedL1/L2/L3(UC-5101/5111)Yellow/OffProgrammable LEDs defined by usersReset ButtonThe UC-5100 computer is provided with a Reset button, which is located on the front panel of the computer. To reboot the computer, press the reset button for 1 second.Reset to Default ButtonThe UC-5100 is also provided with a Reset to Default button which can be used to reset the operating system back to the factory default status. Press and hold the Reset to Default button between 7 to 9 seconds to reset the computer to the factory default settings. When the reset button is held down, the Ready LED will blink once every second. The Ready LED will become steady when you hold the button continuously for 7 to 9 seconds. Release the button within this period to load the factory default settings.Real Time ClockThe UC-5100’s real time clock is powered by a non-chargeable battery. We strongly recommend that you do not replace the lithium battery without help from a qualified Moxa support engineer. If you need to change the battery, contact the Moxa RMA service team.Installation OptionsDIN-Rail MountingThe aluminum DIN-rail attachment plate is already attached to the product’s casing. To mount the UC-5100 on to a DIN rail, make sure that the stiff metal spring is facing upwards and follow these steps. Step 1Insert the top of the DIN rail into the slot just below the stiff metal spring in the upper hook of the DIN-rail mounting kit.Step 2Push the UC-5100 towards the DIN rail until theDIN-rail attachment bracket snaps into place.Optional DIN-Rail MountingThe UC-5100 can be mounted with the optional DIN rail mounting kit. Follow these steps for the installation. 1. Attach the optional DIN-rail mounting kit on therear panel with two screws.2. Pull down the slider of the DIN-rail bracketlocated at the back of the unit.3. Insert the top of the DIN rail into the slot justbelow the upper hook of the DIN-rail bracket. 4. Latch the unit firmly on to the DIN rail as shownin the illustrations below.5. Once the computer is mounted properly, youwill hear a click and the slider will rebound back into place automatically.Note this optional DIN-rail mounting kit should be purchased separately.3 Hardware Connection DescriptionIn this chapter, we describe how to connect the UC-5100 to a network and various devices for first time testing purposes.The following topics are covered in this chapter:❒Wiring RequirementsC onnecting the PowerG rounding the Unit❒Connecting to the Console Port❒Connecting to the Network❒Connecting to a Serial Device❒Connecting to a DI/DO Device❒Connecting to a CAN Device❒Connecting to a USB Device❒Connecting the Cellular/Wi-Fi Module and Antenna❒Installing Micro SIM Cards❒Installing the SD Card❒Adjusting the CAN DIP Switch❒Adjusting Serial Port DIP SwitchWiring RequirementsIn this section, we describe how to connect various devices to the embedded computer. Be sure to read and follow these common safety precautions before proceeding with the installation of any electronic device: • Use separate paths to route wiring for power and devices. If power wiring and device wiring paths mustcross, make sure the wires are perpendicular at the intersection point.NOTEDo not run signal or communication wiring and power wiring in the same wire conduit. To avoid interference, wires with different signal characteristics should be routed separately.• You can use the type of signal transmitted through a wire to determine which wires should be kept separate.The rule of thumb is that wiring that shares similar electrical characteristics can be bundled together. • Keep input wiring and output wiring separate.• When necessary, it is strongly advised that you label wiring to all devices in the system.Connecting the PowerTerminal BlockConnect the 9 to 48 VDC power line to the terminal block, which is connector to the UC-5100 Series computer. If the power is supplied properly, the “Power” LED will glow asolid green light. The power input location and pin definition are shown in the adjacent diagram.SG: The Shielded Ground (sometimes called Protected Ground) contact is at the bottomcontact of the 3-pin power terminal block connector when viewed from the angle shown here. Connect the wire to an appropriate grounded metal surface or through the groundingscrew on top of the device.Grounding the UnitGrounding and wire routing help limit the effects of noise due to electromagnetic interference (EMI). Run the ground connection from the ground screw to the grounding surface prior to connecting devices.Connecting to the Console PortThe UC-5100’s console port is a 4-pin pin-header RS-232 port located on the top panel of the case. It is designed for serial console terminals, which are useful for identifying the boot up message, or for debugging when the system cannot boot up.PIN Signal1 -2 - 3GND 4 TxD 5 RxD 6 - 7 - 8-Connecting to the NetworkThe Ethernet ports are located on the front panel of the UC-5100 computers. The pin assignments for the Ethernet port are shown in the following figure. If you are using your own cable, make sure that the pin assignments on the Ethernet cable connector match the pin assignments on the Ethernet port.PinSignal 1 Tx+ 2 Tx- 3 Rx+ 4 – 5– 6 Rx- 7 – 8–Connecting to a Serial DeviceThe serial ports are located on the front panel of the UC-5100 computer. Use a serial cable to connect your serial device to the computer’s serial port. These serial ports have RJ45 connectors and can be configured for RS-232, RS-422, or RS-485 communication. The pin location and assignments are shown in the table below.Pin RS-232RS-422 RS-485 1 DSR - - 2 RTS TxD+ - 3 GND GND GND 4 TxD TxD- - 5RxD RxD+ Data+ 6 DCD RxD-Data- 7 CTS - - 8DTR--Connecting to a DI/DO DeviceThe UC-5100 Series comes with 4 digital inputs and 4 digital outputs. The DI/DO connectors are located on the top panel of the computer. Refer to the diagram on the left for the pin definitions. For the wiring method, refer to the following figure:Connecting to a CAN DeviceThe UC-5111/5112 comes with 2 CAN ports, allowing users to connect CAN device. The pin location and assignments are shown in the following table:PIN Signal 1 CAN_H 2 CAN_L 3 CAN_GND4- 5 - 6 - 7 CAN_GND8-Connecting to a USB DeviceThe UC-5100 Series computers come with a USB port located at the lower part of the front panel, allowing users to connect to a device with an USB interface. The USB port uses a type A connector. Connecting the Cellular/Wi-Fi Module and AntennaThe UC-5102 and UC-5112 computerscome with one Mini PCIe socket forinstalling one cellular or Wi-Fi module.Unfasten the two screws on the rightpanel to remove the cover and find thelocation of the socket.The cellular module package includes 1 cellular module, and 2 screws. The cellular antennas should bepurchased separately to fit your installation requirements.Follow these steps to install the cellular module.1.Set the antenna cables aside for convenience of installation andclear the wireless module socket as shown in the figure.2.Insert the cellular module into the socket and fasten two screws(included in the package) on to the top of the module.We recommended using a tweezer when installing or removingthe module.3.Connect the free ends of the two antenna cables next to thescrews as shown in the image.4.Replace the cover and secure it using two screws.5.Connect the cellular antennas to the connectors.Antenna connectors are located on the front panel of thecomputer.The Wi-Fi module package includes 1 Wi-Fi module, and 2 screws. The antenna adapters and Wi-Fi antennas should be purchased separately to fit your installation requirements.Follow these steps to install a Wi-Fi module.1. Set the antenna cables aside and clear the wireless module socket as shown in the figure for convenience of installation.2. Insert the Wi-Fi module into the socket and fasten two screws (included in the package) on to the top of the module.We recommended using a tweezer when installing or removing the module.3. Connect the free ends of the two antenna cables next to the screws as shown in the image.4. Replace the cover and secure it with two screws.5. Connect the antenna adapters to the connectors on the front panel of the computer.6. Connect the Wi-Fi antennas to the antenna adapters.Installing Micro SIM CardsYou will need to install a Micro SIM card on your UC-5100 computer. Follow these steps to install the Micro SIM card.1. Remove the screw on the cover located on the frontpanel of the UC-5100.2. Insert the Micro SIM card into the socket. Make sureyou place the card in the right direction. To remove the Micro SIM card, simply push the Micro SIM card and release it. Note: There are two Micro SIM card sockets allowing users to install two Micro SIM cards simultaneously. However, only oneMicro SIM card can be enabled for use.UC-5100 Series Hardware Hardware Connection Description 3-8Installing the SD CardThe UC-5100 Series computers come with a socket for storage expansion that allows users to install an SD card. Follow these steps to install the SD card:1. Unfasten the screw and remove the panel cover.The SD socket is located on the front panel of thecomputer.2. Insert the SD card into the socket. Ensure that thecard is inserted in the right direction.3. Replace the cover and fasten the screw on thecover to secure the cover.To remove the SD card, simply push the card in andrelease it.Adjusting the CAN DIP SwitchThe UC-5111 and UC-5112 computers come with one CAN DIP switch for users to adjust the CAN termination resistor parameters. To set up the DIP switch, do the following:1. Find the DIP switch location on the top panel of thecomputer2. Adjust the setting as required. The ON value is 120Ω, and the default value is OFF.Adjusting Serial Port DIP SwitchThe UC-5100 computers come with a DIP switch for users to adjust the pull-up/pull-down resistors for the serial port parameters. The serial port DIP switch is located on the bottom panel of the computer.Adjust the setting as required. The ON setting corresponds to 1KΩ and the OFF setting corresponds to 150KΩ. The default setting is OFF.Each port consists of 4 pins; you must switch all 4 pins of a port simultaneously to adjust the value of the port.A Regulatory Approval StatementsThis device complies with part 15 of the FCC Rules. Operation is subject to the followingtwo conditions: (1) This device may not cause harmful interference, and (2) this devicemust accept any interference received, including interference that may cause undesiredoperation.Class A: FCC Warning! This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the users will be required to correct the interference at their own expense.European Community。

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