P9415-R Datasheet

© 2021 Renesas Electronics Corporation

25

May 4, 2021

Figure 20. WPC System Feedback Control

The P9415-R goes through six phases: Selection, Ping, Identification & Configuration, Negotiation, Calibration, and Power Transfer.

8.2.8 Selection

In this phase, the P9415-R senses or delivers the wireless power and proceeds to the Ping state. It monitors the rectified voltage or DEMOD

signal, and when the voltage is above the VUVLO_rising threshold, the P9415-R prepares to communicate with the base station or enter power

Ping mode.

8.2.9 Ping

In this phase, the P9415-R transmits a Signal Strength Packet as the first communication packet to instruct the base to keep the power signal

ON (or the P9415-R detects a Signal Strength Packet). After sending/receiving the Signal Strength Packet, the P9415-R proceeds to the

Identification and Configuration phase. If, instead, an End of Power Packet is sent or an invalid response is sent, then it remains in the Ping

phase.

In this phase, the P9415-R sends/expects the following packets:



Signal Strength Packet



End of Power Packet