P9222-R/RN Datasheet

© 2019-2022 Renesas Electronics Corporation

29

May 5, 2022

7.5 System Feedback Control

The P9222-R/RN is fully compatible with WPC ( Baseline Power Profile) and has all the necessary circuitry to communicate with the base

station via WPC communication packets. The overall WPC system behavior between the transmitter and the receiver follows the state machine

shown in Figure 25.

The P9222-R/RN goes through four phases:

1. Selection

2. Ping

3. Identification and Configuration

4. Power Transfer

Figure 25. WPC System Feedback Control BPP Mode

Selection

Ping

Identification

& Configuration

Power Transfer

No response

or no power

needed

Object

detected

Power receiver

present

Error

condition

Power transfer complete

or error condition

START

7.5.1 Selection

In the “Selection” phase, the P9222-R/RN is prepared to sense or deliver the wireless power and proceeds to the “Ping” state. It monitors the

rectified voltage, and when the voltage is above the VUVLO_RISING threshold (see Table 5), the P9222-R/RN prepares to communicate with the

base station or enter the power “Ping” phase.