摘要
介绍一款BCD公司的AP系列芯片,并介绍基于此芯片的一种以最少外部元器件就能获得高效率的高频开关电源的设计方案,该电路在宽范围电压输入范围内,采取单端反激式电路,利用脉冲宽度调制技术和光耦反馈来实现驱动电源;同时为了适应小型化和模块化的需求,方案采用扁平式变压器方法提高了转换效率,减少了变换器体积。
Response to these issues,a design of the high frequency power supply with minimal external components based on a chip of AP series of BCD company is introduced in this paper.The circuit has a wide range of voltage input,single-ended flyback circuit.It takes use of PWM technology and optocoupler feedback to achieve the drive power.At the same time,the program uses a flat-type transformer means to enhance the conversion efficiency and reduces converter volume in order to meet the needs of miniaturization and modularization.
出处
《仪表技术》
2010年第4期64-67,共4页
Instrumentation Technology
关键词
单端反激
电流型PWM
离线式
光耦
高频变压器
single-ended flyback
current-mode PWM
off-line type
optocoupler
high-frequency transformer
