SOC wireless charging scheme

SoC Wireless charging solutions

The surging wireless charging industry , Although the market prospect is broad , But there are also a large number of wireless charging companies , This technology has not yet begun to be popularized , In the supply chain, we have begun to compete for prices . The plan is also made up of MCU The transition to SoC Integrated higher way of working , Wireless charging SoC The plan should be the future development direction .
current SoC The wireless charging scheme adopts the main control chip +MOS The architecture of , Less peripheral components , Stable performance . Launched by xuxinsheng electronics XS016 programme , Adopted qi standard , take Driver Integrated in the main control chip , And PowerMOS A perfect match , Reduce loss and optimize performance to the extreme .
XS016 Is highly integrated 5W Power full bridge chip , collocation PMOS+NMOS, Form a full bridge output circuit , More efficient , The optimized scheme design , bring MOS、 The temperature of the resonant capacitor is greatly reduced , The conversion efficiency is further improved , Products are also safer .
Charging wirelessly qi In the standard , Foreign body detection （FOD） Is the most basic requirement , Because of the principle of electromagnetic induction , The changing magnetic field will produce eddy current on the metal , This leads to continuous heating of the metal , Therefore, this function can effectively prevent the occurrence of safety accidents . Over current protection 、 Temperature protection and other multiple protections , It is the basic guarantee of product safety .

The main control chip adopts SOP-16 encapsulation , It is conducive to mass patch processing , Reduce production defects . Integrated SoC The chip controls the normal operation of the whole circuit ,PMOS+NMOS Form a full bridge circuit , Ensure high current output , The element is not heated .CBB And a very small number of peripheral resistance and capacitance components further reduce the cost .
Stable circuit design , The voltage at the receiving end is stabilized at 5V, The current 1A Work , Ensure the continuous 5W Power output .

Current foot 5V1.09A

power ：5.6W

The output of the power terminal is stable at 5V/1.15A about , The current fluctuation level on the test curve is small ：

Mobile phone test , The highest calorific value MOS The maximum element temperature is 44℃（ Indoor ambient temperature 29℃ Test under conditions ）.

XS016 The wireless charging scheme has the advantage of few peripheral components , Plus excellent performance , It has been widely used in mobile power supply 、 Desk lamp 、LED Intelligent night light 、 Bluetooth speakers 、FM The radio 、 Desktop calendar and other products .
Believe in the near future , Wireless charging will be added to the products around us , Let's wait and see .