首页>
外国专利>
Synchronous rectifier control circuit and method using volt-second balancing
Synchronous rectifier control circuit and method using volt-second balancing
展开▼
机译:利用伏秒平衡的同步整流器控制电路和方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A synchronous rectifier control circuit and the control method thereof for controlling a switching power supply which includes a transformer, a first switch transistor and a second switch transistor. According to one embodiment to the present invention, the control circuit comprises a conducting detection module, a voltage averaging module, a voltage-second balance module and a logic-controlled module. The conducting detection module is comprised of a first reference potential and a conduction signal. The voltage averaging module includes an averaged circuit and outputs a second reference potential. The voltage-second balance module includes a first reference current, a second reference current, a voltage-second balance switch, a voltage-second balance comparator and a timing capacitor, and outputs a reset signal. The logic-controlled module includes a logic circuit to control the second switch transistor to turn on or off.
展开▼