电源管理单元及其应用之无线电力系统;POWER MANAGEMENT UNIT AND WIRELESS POWER SYSTEM THEREOF

摘要

一种电源管理单元，系应用于无线电力系统，包括：整流器，具有输入埠以接收无线电力，并具有整流输出端以输出直流电压；第一开关，且一外接之第一保护电容系耦接于输入埠之一端以及第一开关之通道之间；第二开关，且一外接之第二保护电容系耦接于输入埠之另一端以及第二开关之通道之间；参考电压端，提供一参考电压；比较器，具有二比较输入端分别耦接于整流输出端以及参考电压端，并具有比较输出端同时耦接于第一开关以及第二开关之控制端。; a first switch, wherein a first protecting capacitor is coupled between one terminal of the input port and a channel thereof; a second switch, wherein a second protecting capacitor is coupled between the other terminal of the input port and a channel thereof; a reference voltage terminal, for providing a reference voltage; a comparator, having two input terminals coupled to the rectifying output terminal and the reference voltage terminal respectively, and having a output terminal coupled to control terminals of the first switch and the second switch.