PT4561资料

For technical support and more information, see inside back cover or visit www.ti.comPT4560 Series

30-W 48-V InputIsolated DC/DC Converter

Standard Application

Cin= Optional 100µF/100V electrolyticCout= Required 330µF electrolytic (See Notes)Q1= N-Channel MOSFETR1/C1= Optional (see application notes)PT4560

219

7, 8, 914-17

4-610-1213LOADCIN+VO Adjust

+VIN

Inhibit+REMOTE SENSE

–REMOTE SENSE+VO

–VO

–VINQ1COUT+18

R1

C1Features

•Input Voltage Range:

36V to 75V

•1500 VDC Isolation

•On/Off Control

•Vo Adjust

•Differential Remote Sense

•Current Limit

•Short-Circuit Protection

•Over-Temperature Shutdown

Description

The PT4560 series is a single-output

isolated DC/DC converter, housed in a

19-pin space-saving package. These mod-

ules are UL, CSA, and VDE approved

for telecom applications, and rated at

30 watts or 8 A. Standard output voltages

range from 1.8 V to 15 V, each adjustable

by up to ±10% of nominal.

Operating features include a remote

on/off control, an under-voltage-lockout

(UVLO), and a differential remote sense.

The PT4560 series also incorporates

many protection features. These include

output current limit, short-circuit pro-

tection, and over-temperature shutdown.

PT4560 requires a 330µF of output

capacitance for proper operation.Ordering Information

PT4561H = 3.3V/8A(26.4W)

PT4562H = 5.0V/6A

PT4563H = 12.0V/2.5A

PT4564H = 15.0V/2A

PT4565H = 2.0V/8A(16W)

PT4566H = 2.5V/8A(20W)

PT4567H = 1.8V/8A(14.4W)

PT4568H = 5.2V/6A

PT4571H = 9.0V/3.3APin-Out Information

PinFunction

1Do Not Use

2Remote On/Off †

3Do Not Use

4-Vin5-Vin6-Vin7+Vin8+Vin9+Vin10-Vo11-Vo12-Vo13-Remote Sense

14+Vo15+Vo16+Vo17+Vo18Vo Adjust †

19+Remote Sense

†For more information,see application notes.SLTS097C

(Revised 3/14/2002)

•Undervoltage Lockout

•Space-Saving Package

•Solderable Copper Case

•UL1950 Recognized

•CSA 22.2 950 Certified

•EN60950 Approved

•VDE Licensed

•4.9 x106 Hrs MTBF

•Meets FCC Class A

Radiated Limits

PT Series Suffix (PT1234x)

Case/PinOrderPackageConfigurationSuffixCode *

VerticalN(END)

HorizontalA(ENA)

SMDC(ENC)

*Previously known as package styles 1400 &1410.

(Reference the applicable package code draw-ing for the dimensions and PC board layout)元器件交易网www.cecb2b.com

For technical support and more information, see inside back cover or visit www.ti.comPT4560 Series

30-W 48-V InputIsolated DC/DC ConverterSpecifications (Unless otherwise stated, Ta =25°C, Vin =48V, Cout =330µF, and Io =Iomax)

PT4560 SERIES

CharacteristicSymbolConditionsMinTypMaxUnits

Output CurrentIoOver Vin rangeVo = 15V0.1(1)—2.0Vo = 12V0.1(1)—2.5AVo = 9.0V0.1(1)—3.3Vo =5.0V0.25(1)—6.0Vo ≤ 3.3V0.25(1)—8.0

Input Voltage RangeVinOver Io Range36.048.075.0V

Set Point Voltage ToleranceVo tolVo ≥5.0V—±1±1.5%VoVo ≤3.3V—±33±50mV

Temperature VariationRegtemp–40° ≤Ta ≤ +85°C—±0.5—%VoLine RegulationReglineOver Vin rangeVo ≥5.0V—±0.2±1.0%VoVo ≤3.3V—±7±33mV

Load RegulationRegloadOver Io rangeVo ≥5.0V—±0.4±1.0%VoVo ≤3.3V—±13±33mV

Total Output Voltage Variation∆VototIncludes set-point, line, load,Vo ≥5.0V—±2—%Vo–40° ≤Ta ≤ +85°CVo ≤3.3V—±67—mV

EfficiencyηVo = 15V—85—Vo = 12V—87—Vo =9.0V—84—%Vo =5.0V—84—Vo =3.3V—80—Vo =1.8V—69—

Vo Ripple (pk-pk)Vr20MHz bandwidthVo ≥ 5.0V—1.02.0%VoVo ≤ 3.3V—5075mVppTransient Responsettr0.1A/µs load step, 50% to 100% Iomax—100200µs

∆VtrVo over/undershootVo ≥ 5.0V—±3.0±5.0%VoVo ≤ 3.3V—±100±150mV

Short Circuit CurrentIsc—2xIomax—A

Switching FrequencyƒsOver Vin range Vo ≥10V400500600kHzVo <10V600750900

Under-Voltage LockoutUVLOVin increasing—34—VVin decreasing—33—

Remote On/Off Input (pin 2)Referenced to –Vin (pins 4–6) Input High VoltageVIH2.5—15 (2)V Input Low VoltageVIL–0.2—+0.8 Input Low CurrentIIL–3–6–10µA

Standby Input CurrentIin standbypins 2 & 4 connected—816mA

Internal Input CapacitanceCin—0.66—µF

External Output CapacitanceCoutBetween +Vo and –VoVo ≥ 9.0V260330600(3)µFVo ≤ 5.0V2603301,000(3)Isolation VoltageInput-output/input-case1500——VdcCapacitanceInput-output—1200—pFResistanceInput-output10——MΩ

Operating Temperature RangeTaOver Vin range-40 (4)—+85 (5)°C

Maximum Case TemperatureTc——100°C

Storage Temperature RangeTs-40—+125°C

ReliabilityMTBFPer Bellcore TR-3324.9——106 Hrs50% stress, Ta =40°C, ground benign

Mechanical Shock—Per Mil-Std-883D, method 2002.3,—500—G’s1mS, half-sine, mounted to a fixture

Mechanical Vibration—Per Mil-Std-883D, method 2007.2,—20—G’s20-2000Hz, soldered in board

Weight———40—grams

Flammability—Materials meet UL 94V-0

Notes:(1)The DC/DC converter will operate at no load with reduced specifications.(2)The Remote On/Off input has an internal pull-up. If it is left open circuit the PT4560 will operate when input power is applied. A low-leakage(<100nA) MOSFET is recommended to control this input. The open-circuit voltage is less than 10V. See application notes for interface considerations.(3)Output capacitor values are absolute. Allowances must be made for any additional de-coupling capacitors and the total external capacitor tolerance.The value of external capacitance is limited due to regulator startup current requirements. Consult the factory for further details.(4)For operation below 0°C, the required external output capacitor must have temperature stable characteristics. E.g. Tantalum or Oscon® types.(5)See Safe Operating Area curves or contact the factory for the appropriate thermal derating.元器件交易网www.cecb2b.com