Hello all,

I have designed 1V core voltage for FPGA in my board using LTM4637 uModule. Below provided the circuit of the regulator I have designed.

In one board out of two, whenever I am pressing the test point or even PCB, I am observing a sawtooth…

Is it possible for LTM4637 to generate negative output?  eg:12V input  -5v output 20A?

Hi,

I checked Phase Margin (PM) using LTpowerCAD about LTM4637.

I loaded default solution in LTpowerCAD.

When Iout = 20 A, Phase + 180 deg is enough in all frequency.

When Iout = a few A, 

Iout = 数Aの場合、PM > 70 deg

However, Phase + 180 deg < 20 deg @ …

Is it possible for LTM4637 to generate negative output?  eg:12V input  -5v output 20A?

你好，我选用这些大电流的集成模块芯片手册只是正压转正压应用，现在有一个需求需要大电流的负压输出：

是不是只要把模块的输出接参考GND，GND接输出，把buck转化成fly-back即可？

转化成fly-back之后，是否仍然支持多相并联？

谢谢！