Linear LT3753 5V20A输出100W电源解决方案

Linear公司的LT3753是电流模式PWM控制器,输入电压8.5V－100V,采用有源箝位,同步整流和可编延迟可得到高效率,开关频率100kHz到500kHz,主要用在工业,汽车和军用系统,48V通信隔离电源.本文介绍了LT3753主要特性,框图,100W典型应用电路以及演示板2050A电路图,材料清单和PCB布局图.

The LTR3753 is a current mode PWM controller optimized for an active clamp forward converter topology, allowing up to 100V input operation.

A programmable volt-second clamp allows primary switch duty cycles above 50% for high switch, transformer and rectifier utilization. Active clamp control reduces switch voltage stress and increases efficiency. A synchronous output is available for controlling secondary side synchronous rectification.

The LT3753 is available in a 38-lead plastic TSSOP package with missing pins for high voltage spacings.

LT3753主要特性:

 Input Voltage Range: 8.5V to 100V
 Programmable Volt-Second Clamp
 High Efficiency Control: Active Clamp, Synchronous Rectification, Programmable Delays
 Short-Circuit (Hiccup Mode) Overcurrent Protection
 Programmable Soft-Start/Stop
 Programmable OVLO and UVLO with Hysteresis
 Programmable Frequency (100kHz to 500kHz)
 Synchronizable to an External Clock

LT3753应用:
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