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选用TPS54540时补偿网络的仿真结果如何分析

Other Parts Discussed in Thread: TPS54540

考虑选用TPS54540,输入是28V,输出12V5A,使用TI的设计工具并仿真,仿真得到的波特图显示增益余量是负值。请问,这个是表示电路能稳定输出还是不能稳定输出设定电压?预备带荣性负载,按datasheet看输出12V5A是可以的,温升可能有点高但还在安全范围内,看论坛里很多反映带载能力有问题,有点担心。请熟悉此款芯片的大侠多多指教,谢谢!