在调试LM5145-Q1时候发现,当使用500kHz时,存在掉电压情况,想请教一下,是该怎么解决呢?
VIN=48V,带载1A,电压掉至5V左右;
VIN=48V,带载2A,电压掉至0V左右;
This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
在调试LM5145-Q1时候发现,当使用500kHz时,存在掉电压情况,想请教一下,是该怎么解决呢?
VIN=48V,带载1A,电压掉至5V左右;
VIN=48V,带载2A,电压掉至0V左右;
HI
首先确认功率电感饱和电流足够大? 然后layout上功率回路尽量小。
以及确认电流保护参数,和保护电路的layout(Connect the ILIM setting resistor from the drain of the low-side MOSFET to ILIM and make the connections as close as possible to the LM5145-Q1. The trace from the ILIM pin to the resistor must avoid coupling to a high-voltage switching net.)