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TPS544C20限流问题

Other Parts Discussed in Thread: TPS544C20

您好!

我在使用TPS544C20, 依照推荐电路,设计输出1.8V 电源。调试过程中,输出纹波,控制特性等均正常,但是负载加到15A时电源报OV故障,随后电源停止。

调整OV限值和OC限值,均无效。估计为上MOS短路保护所致,但反复调整COM引脚补偿电容参数,效果仍无改观。

请问,应如何分析和解决,谢谢!