RAA457100GBM Datasheet, PDF (1/27 Pages) Renesas Technology Corp – Wireless Charging System Receiver IC for Low Power Applications

Datasheet
RAA457100GBM
Wireless Charging System Receiver IC for Low Power Applications
R19DS0094EJ0100
Rev.1.00
2017.02.28
1. Product Outline
Description
RAA457100 is a receiver IC for low power wireless charging system. RAA457100 performs battery charging by wireless transmission power and DC
power supply to receiver application system from battery. When RAA458100 is used in a transmitter, a wireless charging system with bi-directional
communication can be constructed.
Features
- Wireless battery charging
- DC power supply to application system by high efficiency DCDC converter
- Monitoring some pin voltages such as rectified output voltage, battery voltage by 12bit A/D converter
- Modulation/Demodulation function for bi-directional communication between transmitter and receiver
- Transmitter system(RAA458100) can read and write RAA457100 registers for setting charge control parameters
- Function which converts wireless communication to 2-wrie serial communication
for communication between transmitter and receiver application system
- Battery protection, Low battery voltage detection
2. Block Diagram ( Example for Application Circuit )
RAA457100
R_IVCC *C_IVCC
RIMON
C_SS
C_SP
Rx Coil
RECT
*R_RECT C_RECT
VIN1
VIN2
Full
Wave
Rectifier
C_CM1
*R_{CM1 CCP1}
*R_CP1
C_CM2
*R_{CM2 CCP2}
*R_CP2
COM1
CLMP1
COM2
CLMP2
RGND
COM
&
CLMP
Driver
to R_THM
C_VDDW
C_VDDB
OSC
VDDW
REG
VDDB
REG
VCC
Regulator
Battery
Charge
Control
to _SD
Control
Logic
VCC
BAT
RICHG
C_VCC
D₁
C_BAT
BATTERY
Low Battery Voltage Detection
Discharge Over Voltage Detection
Discharge Over Current Detection
& Short Circuit Current Detection
Tj_max Detection
Step-Down
DCDC Converter
*C_ICHG R_ICHG
THM
to
ADC
SYS
*C_THM
VDDW
R_THM
NTC
VCC
LX
SGND
L_DD
*R_DD
C_DD
ADC
Control Logic
DFET GND
DDEN
MODE
CHG/INT
BUZ
C_SGND
VDDB
R_MODE
R_INT
R_BUZ
SCL
SDA
R_SCL
R_SDA
Rx Main System
Power
Supply
GND
GPIO1
GPIO2
SCL
SDA
*Optional Parts
VDDB
*C_SCL *C_SDA
R19DS0094EJ0100 Rev.1.00
2017.02.28
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