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关于TPS40210带负载问题

Other Parts Discussed in Thread: TPS40210

请问各位高手,我现在用TPS40210做LED升压电源(12V电瓶升85V 350MA输出 频率120K左右 ,元器件及原理图都是官网上算出来的),升压电压很正常(空载很稳),MOS管GS的波形也是很正常的方波,就是以带负载就保护了,请各位高手指点一下我这个菜鸟,该调啥地方。