Wireless Power Transfer Using Qi Protocol - Infineon WLC1150 User Manual

WLC1150 MP-A2 50-W wireless power transmitter
(REF_WLC_TX50W_N1) user guide
Reference board operation
Figure 8 Wireless power transfer using high power protocol
Note: Ensure that the DC load is connected to the Rx board as per the polarity marked on the Rx board.
6. Increase the load in the maximum step of 20 W to exceed 40 W. Observe that the fan located on the bottom
side of the Tx board turns on when the power transferred exceeds 40 W or when the Tx interface surface
temperature sensed by the thermistor on the Tx board exceed 45°C to cool the temperature of the Tx
interface surface.
7. During the power transfer the load on the Rx board can be varied up to 50-W. However, the maximum step
size for load change (application or removal) should not exceed 20-W.
8. Remove the Infineon Rx board from the Tx interface surface of the Tx reference board. Observe that the
status LED (LED1) turns off.
9. Disconnect the USB Type-C power adapter once the high-power transfer operation is complete.
Note: Avoid short circuits of the output load terminal of the Rx board. This may result in damage to the
Rx board.
4.1.2

Wireless power transfer using Qi protocol

The following procedure explains the steps to charging using the Qi protocol.
1. Repeat steps 1 to 3 of section
2. Place the Qi phone/receiver on the Tx interface surface of the Tx reference board as shown in
3. The status LED (LED1) of the Tx board glows blue when the power transfer is in progress.
4. Observe that the status LED turns OFF when the phone/receiver is removed from the Tx interface surface or
once the phone is fully charged (100%).
5. Disconnect the USB Type-C power adapter once the power transfer operation is complete.
Note: The status LED continues to glow blue if the phone remains in trickle charging mode after the
battery is fully charged.
User guide
4.1.1 to exercise the power up the transmitter board.
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Figure 9.
002-36393 Rev. *B
2023-02-06