我设计的TPS62160电路,输入电压12V/1A,输出接负载时,负载消耗1A电流时,tps62160的输出电压就变成4.8V。远远低于5V。电路按照设计手册上设计的。两个匹配电阻为680K,130K。请求解决方案。让输出稳定在5V/1A。
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HI
功率电感推荐用1.5A以上,芯片推荐用固定输出电压5V的版本TPS62163.
Layout也不是很好,推荐参照datasheet 第26页,功率走线粗一点,并且回路尽量小。