15W Wir ele ss Power Receiver
with WattShareâ„¢ Mode
P9415-
R
Datasheet
© 2021 Renesas Electronics Corporation
1
May 4, 2021
Description
The P9415-R is a highly integrated single-chip wireless power
transmitter/receiver IC (TRx) that can be configured to receive or
transmit an AC power signal through magnetic induction.
When the device is configured as a wireless power transmitter, it
uses an on-chip full/half-bridge inverter, a PWM generator, a
modulator/demodulator for communication, and a microcontroller
to produce an AC power signal to drive external L-C tank. As a
receiver, the P9415-R receives an AC p ower signal from a wireless
transmitter and converts it into rectified output voltage, which can
be used to power devices or supply the charger input in mobile
applications. The P9415-R integrates a high-efficiency
Synchronous Full Bridge Rectifier and control circuitry to modulate
the load to send message packets to the Transmitter (Tx) to
optimize power delivery.
The P9415-R features Multiple-time programmable (MTP) non-
volatile memory that enables customers to customize the design
parameters such as default output voltage and FOD thresholds.
The P9415-R includes over-temperature and voltage protection.
Fault conditions associated with power tra nsfer are managed by an
industry-leading 32-bit ARM
®
Cortex
®
-M0 processor offering a high
level of programmability while consuming extremely low standby
power. The processor can also control GPI Os to indicate opera ting
and fault modes. The device is available in an ultra-small
53-WLCSP package.
Typical Applications
 Wireless power solution for mobile applications
Features
 Delivers up to 15W as a receiver
 WattShare
TM
(TRx )mode with up to 5W Tx capability
 24kB Multiple-time programmable (MTP) non-volatile memory
 WPC 1.3 Specification hardware ready
 2.5V Under-Voltage Lockout (UVLO) threshold for expanding
the charging area
 Internal reverse current sense for WattShare
TM
mode
 Reliable VRECT over-voltage clamping
 Internal IOUT filtering to remove the battery charger current
ripple
 Supports Bi-Directional communication s
 Supports X-Y alignment coils
 The device is capable of delivering 30W using a custom
firmware
 Embedded 32-bit ARM
®
Cortex
®
-M0 processor
 Supports I2C 400kHz standard interface and GPIOs
 Package: 6 × 9 ball array, 2.82 × 4.22 × 0.50 mm, 53-WLCSP
with 0.40mm ball pitch
Typical Applications Schematic
AC1
AC2
BST2
CMB
COM2
COM1
CMA
BST1
PGND
VRECT
VOUT
GP0-GP6
OD0-OD4
Chip Enable
P9415
nEN
Rx-OUTPUT
Tx-INPUT
LDO5P0
TRx
Coil
VSNS
LDO1P8
DEMOD
VSNS
DEMOD
PCLAMP
C
S
C
D
R
CLAMP
C
RECT
C
LDO1P8
C
LDO5P0
C
VOUT
P9415-R
Datasheet
© 2021 Renesas Electronics Corporation
2
May 4, 2021
Contents
1. Pin Assignments ...........................................................................................................................................................................................7
2. Pin Descriptions ............................................................................................................................................................................................8
3. Absolute Maximum Ratings ........................................................................................................................................................................10
4. Thermal Characteristics ..............................................................................................................................................................................10
5. Electrical Characteristics ............................................................................................................................................................................11
6. Wireless Power Charging System ..............................................................................................................................................................14
7. Typical Performance Characteristics ..........................................................................................................................................................15
8. Theory of Operation ....................................................................................................................................................................................21
8.1 Overview ............................................................................................................................................................................................22
8.2 WPC Mode Characteristics ...............................................................................................................................................................22
8.2.1 Startup ................................................................................................................................................................................22
8.2.2 Power Transfer ...................................................................................................................................................................22
8.2.3 Advanced Foreign Object Detection (FOD) WPC MODE ...................................................................................................22
8.2.4 Status/Interrupt Output .......................................................................................................................................................23
8.2.5 WPC Modulation/Communication .......................................................................................................................................23
8.2.6 Bit Encoding Scheme .........................................................................................................................................................24
8.2.7 System Feedback Control ..................................................................................................................................................24
8.2.8 Selection .............................................................................................................................................................................25
8.2.9 Ping ....................................................................................................................................................................................25
8.2.10 Identification and Configuration (ID and Config) .................................................................................................................26
8.2.11 Negotiation .........................................................................................................................................................................26
8.2.12 Calibration ..........................................................................................................................................................................26
8.2.13 Power Transfer ...................................................................................................................................................................26
8.2.14 Renegotiation .....................................................................................................................................................................26
8.2.15 End of Power Transfer (EPT) .............................................................................................................................................26
8.3 Rx Mode Functions ............................................................................................................................................................................26
8.3.1 Synchronous Rectifier ........................................................................................................................................................26
8.3.2 Rectifier and VRECT Level .................................................................................................................................................26
8.3.3 Over-Voltage Protection .....................................................................................................................................................27
8.3.4 Over-Current Protection, Over-Temperature Protection, and Thermal Shutdown ..............................................................27
8.3.5 Enable Input .......................................................................................................................................................................27
8.3.6 LDO Regulators ..................................................................................................................................................................27
8.3.7 MLDO Output Enable Conditions .......................................................................................................................................27
8.4 WattShare
TM
(TRx) Mode Functions ..................................................................................................................................................28
8.4.1 Enabling WattShare
TM
(TRx) Mode ....................................................................................................................................28
8.4.2 WattShare
TM
Mode Input Voltage .......................................................................................................................................28
8.4.3 Demodulator .......................................................................................................................................................................29
8.4.4 WattShare
TM
Mode Input Under Voltage, Over Voltage, and Current Limit ........................................................................29