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Renesas Electronics Components Datasheet

RAA457100GBM Datasheet

Wireless Charging System Receiver

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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
RIVCC *CIVCC
RIMON
CSS
CSP
Rx Coil
RECT
*RRECT CRECT
VIN1
VIN2
Full
Wave
Rectifier
CCM1
*RCM1 CCP1
*RCP1
CCM2
*RCM2 CCP2
*RCP2
COM1
CLMP1
COM2
CLMP2
RGND
COM
&
CLMP
Driver
to RTHM
CVDDW
CVDDB
OSC
VDDW
REG
VDDB
REG
VCC
Regulator
Battery
Charge
Control
to SD
Control
Logic
VCC
BAT
RICHG
CVCC
D1
CBAT
BATTERY
Low Battery Voltage Detection
Discharge Over Voltage Detection
Discharge Over Current Detection
& Short Circuit Current Detection
Tj_max Detection
Step-Down
DCDC Converter
*CICHG RICHG
THM
to
ADC
SYS
*CTHM
VDDW
RTHM
NTC
VCC
LX
SGND
LDD
*RDD
CDD
ADC
Control Logic
DFET GND
DDEN
MODE
CHG/INT
BUZ
CSGND
VDDB
RMODE
RINT
RBUZ
SCL
SDA
RSCL
RSDA
Rx Main System
Power
Supply
GND
GPIO1
GPIO2
SCL
SDA
*Optional Parts
VDDB
*CSCL *CSDA
R19DS0094EJ0100 Rev.1.00
2017.02.28
Page 1 of 25


Renesas Electronics Components Datasheet

RAA457100GBM Datasheet

Wireless Charging System Receiver

No Preview Available !

RAA457100GBM
3. Pin Functions
3. Pin Functions
Pin
No.
Pin
Name
A/D I/O Function
*1
*2
A6,B6,F4 GND
- - Ground
A1,B1
RGND
-
-
Ground
for Rectifier, Load modulation driver, Clamp driver
B7,C7
SGND
-
-
Ground
for DCDC converter, application system
A5,B5
BAT
A I/O Battery terminal
A2
VIN1
A I Input terminal 1 to rectifier
B2
VIN2
A I Input terminal 2 to rectifier
A3,B3
RECT
A I/O Rectified output terminal
C1
COM1
A O Load modulation driver output terminal 1
F1
COM2
A O Load modulation driver output terminal 2
D1
CLMP1
A O Clamp driver output terminal 1
E1
CLMP2
A O Clamp driver output terminal 2
D4
VDDB
A
O
Regulated 3.0V output
(inside usage)
D5
VDDW
A
O
Regulated 2.7V output
(inside usage, reference voltage for thermistor)
A4,B4
VCC
A
O
VCC regulator output
(Power supply for DCDC converter)
C4
RIMON
A
O
External resistor connection for output current limit
Monitor of VCC regulator output current
C5
RICHG
A
O
External resistor connection for current setting of
constant current charging
D6
THM
A I Thermistor voltage input terminal
A7
LX
A O DCDC converter switching output terminal
C6
SYS
A I DCDC converter output voltage feedback terminal
E7
DDEN
D I DCDC converter enable control terminal
D7
SD
D I Shut down control terminal
E5
MODE
D O Operation mode notification output
E6
CHG/INT
D
O
Charging status notification output/
Interruption signal output for Rx application system
F7
BUZ
D O Low battery voltage notification
F3
MS
D I Master or slave setting for 2-wire serial interface
F6
SCL
D I/O Clock input or output for 2-wire serial interface
F5
SDA
D I/O Data input or output for 2-wire serial interface
E2
DDST0
D I DCDC converter output voltage setting 1
F2
DDST1
D I DCDC converter output voltage setting 2
D2
ATR
D I Enable automatic control of rectifier
D3
ATCHG
D I Enable automatic start of battery charging
E3
ATPC
D I Enable automatic transmission power control function
C3
WRC
D I Enable contact battery charging
C2
TEST
- - Test only
*1 A : Analog signal including power supply, D : Digital signal
*2 I : Input terminal, O : Output terminal, I/O : Input and Output terminal
Remark
Connect to minus terminal of battery
Connect to minus terminal of battery
Connected to discharge control FET on chip
Connect to plus terminal of battery
-
-
Connect CRECT between RECT and RGND
Connect CCM1 between COM1 and VIN1
Connect CCM2 between COM2 and VIN2
Connect CCP1 between CLMP1 and VIN1
Connect CCP2 between CLMP2 and VIN2
Connect CVDDB between VDDB and GND
Connect CVDDW between VDDW and GND
Connect to pull up resistor RTHM of NTC thermistor
Connect CVCC between VCC and GND
Connect RIVCC between RIMON and GND
Connect RICHG between RICHG and GND
Divided VDDW voltage by RTHM and NTC thermistor
-
-
-
-
Open drain
Open drain
Open drain
Connect to VDDB or GND
Connect pullup resistor RSCL
Connect pullup resistor RSDA
Connect to VDDB or GND
Connect to VDDB or GND
Connect to VDDB or GND
Connect to VDDB or GND
Connect to VDDB or GND
Connect to GND in wireless charging system
Connect to GND
R19DS0094EJ0100 Rev.1.00
2017.02.28
Page 2 of 25



Part Number RAA457100GBM
Description Wireless Charging System Receiver
Maker Renesas
Total Page 3 Pages
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