请问TPS43060过流保护,只能将输出电压降到与输入电压一样吗
Johnsin Tao:
Hi
The TPS4306x provides cycle-by-cycle current limit protection that turns off the low-side MOSFET when the inductor current reaches the current limit threshold. The cycle-by-cycle current limit circuitry is reset at the beginning of the next switching cycle.
芯片是 cycle-by-cycle的限制,也就是输出电压在保护是应该是输出电压因为过流保护而掉下来,然后芯片再启动想升上去,但是然后会过流掉下来,周而复始。
Sam Zhang(MCP):
Hi,
过流保护的机制如上贴所说。另外,手册还提到,进入过流保护状态以后,输出电压会与负载有关。
During an overcurrent event, the output voltage begins to droop as a function of the load on the output
Vental Mao:
电压最终会降到(输入电压减去MOS体二极管电压)。