Analysis of driving circuit in switching power supply 7

Aguilera

Analysis of driving circuit in switching power supply 7 [Copy link]

1. MOSFET switching process

　　

MOSFET turn-on process

　　

MOSFET Turn-off Process

　　2. Types of gate drive circuits
　　 Direct coupling type
　　 Pulse transformer coupling type
　　 Capacitor coupling type
　　 Drive circuit for dual-tube forward converter Drive
　　 circuit for bridge converter
　　Direct coupling type drive circuit

　　Pulse transformer coupled drive circuit

　　Capacitive coupling type drive circuit

　　Capacitive coupling drive circuit – Improved type I

　　Capacitor-coupled drive circuit – Improved II
　　Drive circuit for dual-tube forward converter
　　Drive circuit for bridge converter
　　3. Practical problems in drive circuit design
　　 Oscillation in capacitor-coupled drive circuit

　　 Driving circuit in bridge converter

　　Oscillation in Capacitive Coupling Drive Circuit

　　Drivers in bridge converters – common circuits