P9415-R-EVK Evaluation Kit
R16UH0015EU0100 Rev.1.0
May 27, 2021
Page 6
4.5
Kit Hardware Connections for Wattshare (Tx) mode
Follow these procedures to set up the kit as shown in Figure 3.
1. Supply power on P9415-R-EVK VOUT with DC power supply (7.0V).
2. Connect USB dongle on P9415-R-EVK J1 connector. USB dongle black line (GND) should be on J1 Pin3.
3. Send Tx mode command with P9415-R Wireless Power Pro GUI (write 0x01 on 0x0076 register).
4. Place the P9222-R-EVK Board or WPC certified receiver on the reverse side of P9415-R-EVK.
P9415-R-EVK PCB boards acts as a spacer between Tx surface and Rx coil.
5. Verify that the green LEDs on P9222-R-EVK is illuminated, which indicates that power transfer has been
established.
Figure 3. Evaluation Kit Connections for Rx Mode Test (2)
4.5.1.
Start Guide for Wattshare Tx mode Operation
The P9415-R-EVK can be configured as a wireless power transmitter. The device uses an on-chip full/half-
bridge inverter, a PWM generator, a modulator/demodulator for communication, and a microcontroller to produce
an AC power signal to drive external L-C tank to operate as a wireless power transmitter (TRx). The P9415-R-
EVK uses the same L-C tank in both Rx mode and TRx mode. In TRx mode, the power needs to be applied on
the VOUT pin first which is the same node as the power receiver output when the device operates in Rx Mode.
Ensure that P9415-R-EVK is not on the Tx pad to avoid Tx conflict.
1. Supply power (5V – 9V) on P9415-R-EVK VOUT or Tx VIN Test point.
2. Write 0x0001 data to 0x0076 register to enable TRx mode with Renesas GUI or any other I2C tool.
3. P9415-R-EVK starts sending digital pings after enabling TRx mode. Probe AC1 and check digital ping
waveform.
