P9222-R datasheet(9/58 Pages) RENESAS

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P9222-R/RN Datasheet

May 5, 2022

Pin Number

Name

Type

Description

F2, G1, G2

AC1

Input

AC power input 1. Connect AC1 to the CS capacitors and CS to the Rx coil. Connect the CD

capacitor from AC1 to AC2 (see Figure 2 and the application schematic in Figure 36). Due to

symmetry, the AC1 and AC2 connections are interchangeable.

PDETB

Output

Open-drain, active-LOW. This pin is an output for indicating ping events are being received by

the Rx. Connect this pin to the application processor (AP) I/O voltage rail using an external

pull-up resistor.

F4, G4, G5

AC2

Input

AC power input 2. Connect this pin to the Rx coil and the CD capacitor (see Figure 2) Due to

symmetry, the AC1 and AC2 connections are interchangeable.)

BST2

Output

Bootstrap capacitor for driving the high-side NFETs of the internal rectifier. Connect a 15nF

capacitor from AC2 to BST2.

PDET_RC

Input

Ping-detect input pin for determining when PDETB will be de-asserted. This pin is used to notify

the AP if the Rx device is removed from the power transfer interface. Connect an RC time-delay

circuit designed to hold the voltage on this pin above VPDET_RC_IL between each Tx ping after

power transfer is completed (EOC).

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