[原创] Infineon ICE5ASAG 60W开关电源(SMPS)参考设计

Infineon公司的ICE5ASAG是第五代固定频率PWM控制器,采用软栅极驱动和频率抖动操作使得在轻负载和50%间有更低的EMI和更好的效率.器件工作电压(10.0~25.5 V),待机时的功耗小于10mW,内置了数字软起动,集成的误差放大器支持非隔离反激的直接反馈,主要用在家用电器,白色家电,TV,PC和服务器的辅助电源,蓝光播放器,机顶盒以及LCD/LED监视器.本文介绍了ICE5ASAG产品亮点和主要特性,框图和应用电路,以及采用ICE5ASAG和IPA80R600P7的60 W 12 V 5 V SMPS演示板DEMO_5ASAG_60W1主要特性,电路图,材料清单和PCB设计图.

The ICE5xSAG is the 5th generation of fixed frequency PWM controller optimized for off-line switch mode power supply in cascode configuration. The cascode configuration helps achieve fast startup. The frequency reduction with soft gate driving and frequency jitter operation offers lower EMI and better efficiency between light load and 50% load. The selectable entry and exit standby power ABM enables flexibility and ultra-low power consumption at standby mode with small and controllable output voltage ripple. The product has a wide operating range (10.0 ~ 25.5 V) of IC power supply and lower power consumption. The numerous protection functions with adjustable line over voltage protection support the power supply system in failure situations. All these make the 5th generation ICE5xSAG series an outstanding PWM controller for fixed frequency flyback converter in the market.
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