BD57011GWL Datasheet, PDF (1/22 Pages) Rohm – Low Impedance FET in rectifier

Wireless Power Consortium / Qi Compliant series
Datasheet
Wireless Power Receiver IC
BD57011GWL
General Description
BD57011GWL is stand-alone integrated IC for wireless
power receiver. The device is composed fully
synchronous rectifier circuit in low-impedance FETs, Qi
compliant packet controller, Adjustable low-dropout, and
open-drain output terminal to communicate the power
transmitter by amplitude modulation.
BD57011GWL applies to 5W-power mobile application
based on WPC ver. 1.1.
Features
■ Low Impedance FET in rectifier
■ High efficiency fully synchronous rectifier
■ Maximum Input Voltage is 20V
■ WPC / Qi Lower Power ver1.1 support
■ Adjustable voltage at low-dropout
■ Open-Drain output terminal for modulation
■ TX-RX coil Position Gap alarm
Applications
WPC compliant Device
■ Smart Phones
■ Cell Phones
■ Hand-held Mobile Devices
Typical Application Circuit
Key Specifications
■ Variable Output Voltage:
4.3～5.3V(16steps)
■ Maximum Input Voltage:
20[V] (Max.)
■ Maximum Input/Output Current:
1.1 [A] (Max.)
■ AC Input Frequency:
100-210 [kHz]
■ Operating Temperature Range: -20°C to +85°C
Package
W(Typ) D(Typ) H(Max)
UCSP50L3C
3.36 ㎜×2.62 ㎜×0.57 ㎜
(7 x 6 array, 0.4mm pitch)
ADGATE
ADDET
BOOT1
COMM1
CLAMP1
AC1
RECT
OUT
OUTSET
ILIM
FOD2
FOD
AC2
BOOT2
COMM2
CLAMP2
GND
POSSET
PG
CTRL
EN1
EN2
BD57011GWL
System
Load
(Charger
And
Battery)
Figure 1. Typical application circuit
Power
AC/DC
Half Bridge
Driver
BD57011GWL
Rectification
Voltage
Control
Feedback
Controller
Voltage
&
Current
Sensing
Qi packet
Controller
Voltage
&
Current
Sensing
Load
Transmitter(TX)
Receiver(RX)
Figure 2. Product position in Wireless
Power Supply System
○Product structure：Silicon monolithic integrated circuit
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© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product is not designed protection against radioactive rays
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TSZ02201-0F2F0AK00110-1-2
2.Jul.2015 Rev.002