Paralleling Power Supply Units Made Easy ???
I am considering paralleling a couple of 20a variable adjustable psu's for 40a charging. According to what I have read on the world wide inter-web, it can be done quite easily, provided the following ...
Forum Discussion
Cross-over is the only frequency that's of concern. If the PS has 40 degrees of phase margin, and the gain in the Bode plot has a -1 slope at cross-over, guaranteed, the PS will be stable. There's no black magic here. It's all cut and dry.
ken white wrote:
Gain and phase margins are determined using the open loop, loop gain, and are typically determined at one frequency only.
To determine if noise or a disturbance can create an issue, the noise would need to be modeled, or physically injected, at the output node and a new open loop gain/phase response would need to be determined.
The designed loop may very well handle any of these disturbances, or a whole new dynamic at a new frequency may be created that was not anticipated and instability could occur.
Ken
