Texas Instruments
Ken Zhang
Wireless Power: Total Solution for Charging Using
the Wireless Power Consortium Standard
Wireless Power Consortium (WPC)
Proprietary Solutions
Interoperability key to adoption
Industry wide standard for delivering wireless power up to 5W
Aimed to enable interoperability between various charging pads and portable Standard continues to gain traction with Broad Industry Support y wide standard for WPC
t
e n with
3
DROID INCREDIBLE 2 by HTC
HTC Rezound ?
ThunderBolt ? by HTC
Revolution? by LG
DROID 3 by Motorola
DROID CHARGE by Samsung DROID BIONIC by Motorola
DROID by Motorola
Pantech Breakout? LTE
Wireless
Charging Pad by LG
TX/RX Module
https://www.doczj.com/doc/c37916585.html,/products/
TX, Transmitter RX, Receiver
Higher
efficiency
Lower
efficiency
Efficiency is Optimal when Coils are Less than One Diameter apart
5
V
Operating Point
10Semiconductors Wireless Power
EMS, ODM
Testing and Certification
Infrastructure
Operators
Consumer Brands
Semicon d ctors
PLDS
WPC today only define low power applications (<5W) as of today. The Consortium is
Free Positioning (Moving Coil)WPC TX Design Freedom
10 September 201213
Free Positioning (Coil Array)
Guided Positioning
(M agnetic A ttraction)
M
x
y
10 September 201
Sensor Array and Motor required, higher cost and complex design –
RFP is a better solution, BQ500410 (A6)
Moving Coil
Coil Array
M
Magnetic
Attraction
RFP
Gen1 TX+ Gen2 RX (BQ51013)
Gen2, Single Chip
Sync. Rectifier, Efficiency optimization QFN Package available
F1TS/CTRL
E1COM2D1OUT C1BOOT2B1AC2A1PGND F2VTSB E2CLMP2D2OUT C2RECT B2AC2A2PGND D3OUT C3RECT E4COM1D4OUT C4BOOT1B4AC1E3CLMP1B3AC1F3/AD-EN A4PGND G1ILIM
A3PGND G2EN2
G3EN1
G4AD
F4/CHG 3.0x1.8 mm 28-ball WCSP
21
Charger BQ51050
Host side
Gas Gauge
Battery side
Gas Gauge
bq500210 Based Designs…
Reduces cost
OPA434874LVC1G3157Active
FILTER TPS715A01Linear Regulator INA214Current Sense 5.5VDC CSD17308NexFET
INA 214C u r r e n t
S e n s e
X
TP S 715A 01R e g u lator
55VDC
X
?3x O P A 434874LV C 1G 3157Acti i v e F I L T ER X
25
?For 19V/12 Input ?Half Bridge
?WPC A1/A6 Coil
?For 5V Input ?Full Bridge ?WPC A5 Coil
Power Supply
Coil Driver
Low Power Supervisor
bq500210
Power Supply
Coil Driver
Low Power
Supervisor
bq500210
Travel Adapter –1A
3
1
1
3
2
2
5V Vin
5V Iin
DPL?
5V Vin
DPL?
5V Iin