How does the world's first 20W Wireless Fast Charging of ...
2019-3-7 · The maximum output power of the Mi 9 20W wireless charge is about 20W and input at 15V 1.34a. The intermediate stage uses 95% high-efficiency DC-DC to step down 2 times the battery voltage. It can also achieve 20mV voltage regulation to ensure the stability of the next-stage charge pump charging. The latter stage uses charge …
Get Price