Short-Form Datasheet
RA9460
Wireless Power Transmitter Analog Front End IC
The RA9460 is a highly-integrated magnetic
induction wireless transmitter power stage that
supports over 15W of power delivery to a Qi Power
Receiver (PRx), and can deliver more than 60W of
power with proprietary PRx solutions. The RA9460
works seamlessly with the Renesas RA2E1 MCU
family. Precision input current sensing, internal
QFOD detection, and bi-directional communication
provide for a secure and safe wireless charging
experience.
Features
■
Power stage for Qi power transmitters
●
WPC 1.3 compliant EPP 15 W charging
●
Proprietary high-speed charging of > 60W
●
●
Uses external MCU for command and control
Recommended for use with Renesas MCU
■
Qi compliant bi-directional communication
●
FSK modulation and ASK demodulation
■
■
■
■
VIN range of 4.5V to 30V
The RA9460 includes an efficient finite state machine
for configuration, execution of high-bandwidth tasks
(such as Auto-ZVS and QFOD), and uses an
Two integrated half-bridge MOSFET drivers
4x high-voltage coil MUX control outputs
external MCU for command and control of the
RA9460’s wireless power transfer. The device
includes advanced wireless power circuitry such as
wide input voltage range operation, high voltage coil
MUX control, a phase demodulation signal generator,
and auto zeroing input current monitoring. These
signals are processed in the RA9460 and then sent
to the host MCU’s ADC for FOD, ASK Demodulation,
and other tasks related to a wireless power transfer.
Multiple PWM inputs for duty and phase shift
operation
■
ZVS optimizing MOSFET drivers for low EMI
operation
■
■
■
Precision input current sensing amplifier
Current and Phase ASK demodulation outputs
Integrated Q-FOD circuitry
●
For improved Foreign Object Detection
In addition, the RA9460 incorporates a USB BCS 1.2
PHY that supports many proprietary Travel Adapter
Control Methodologies, and an I2C interface to read
or send data, information, and fault conditions to the
host MCU. This standard device is compliant to the
WPC-1.3 specification.
■
System efficiency > 90% with select Renesas PRx
ICs
I2C Interface for connection Supervisor MCU
■
■
GPIOs for temperature monitoring and system
Control
■
■
■
■
DP/DM for USB BCS 1.2+ proprietary extensions
3.3V LDO output for MCU power
5V GPIOs for TTL compatibility
The RA9460 is available in a space-saving
32-VFQFPN 4 × 4 package.
VBRG Input
Regulator
Qi 1.3
Security IC
Adapter Input
Package: 4 × 4-32-VFQFPN
RA9460
Precision Internal QFOD
External CPU
(RA2E1)
5 V
FAN
Bias
VBRG
Applications
CP1
1.8 V &
Coil SEL
3.3 V Bias
PTx Driver
PTx Driver
Coil SEL
Flash
SRAM
CPU
■
WPC compliant wireless charging base stations
System
Control
Auto ZVS
VBRG
●
Charging mats or pads
Coil SEL
Coil SEL
FOD
●
FSM Digital
Control
Docking cradles
ADC
Input Current
Sensing
●
Generic consumer electronics
PWMs & I2C
GPIOs
USB DP/DM
GPIO / I2C
eFuse
■
Custom/proprietary wireless charging base
stations
HVFO Coil
MUX Drivers
Temp & FOD
ASK DEMOD
ADC
●
Drone/automation equipment
For Demonstration Purposes Only - Not All Connections
Shown - Not To Scale
●
Hermitical sealed equipment and tools
Figure 1. Simplified Application Circuit
R16DS0319EU0100 Rev.1.00
Feb 8, 2023
Page 1
© 2023 Renesas Electronics
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