P9415-R
© 2021 Renesas Electronics Corporation
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