[CH246 & CH241 Wireless Charging Kit Evaluation] Part 4 - Wired and Wireless Charging Switching Circuit

oxygen_sh

[CH246 & CH241 Wireless Charging Kit Evaluation] Part 4 - Wired and Wireless Charging Switching Circuit [Copy link]

Nowadays, many devices need to support both wired charging and wireless charging. Taking this opportunity to evaluate the Qinheng wireless charging kit, we also studied the automatic switching circuit between wired charging and wireless charging.

The following figure is a switching circuit diagram found on the Internet. In the circuit, wired charging takes precedence over wireless charging. When VBUS is powered on, Vbus_Wireless will be turned off all the way.

In the sample board below, Qinheng's wireless charging receiver board is used as the wireless charging input. In addition, there is a USB type-C socket on the board as the wired charging input. Wired charging takes precedence over wireless charging. After the USB Type-C is connected, the wireless charging input channel is automatically closed.

wangerxian

This circuit is similar to that of a mobile phone.

oxygen_sh

wangerxian posted on 2023-2-20 09:12 This circuit is similar to a mobile phone.

Yes, the mobile phone also needs to support both USB and wireless charging.