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 WattShareTM (TRx) Mode Functions..................................................................................................................................................28

8.4.1

Enabling WattShareTM (TRx) Mode ....................................................................................................................................28

8.4.2

WattShareTM Mode Input Voltage.......................................................................................................................................28

8.4.3

Demodulator.......................................................................................................................................................................29

8.4.4

WattShareTM Mode Input Under Voltage, Over Voltage, and Current Limit........................................................................29