Mosfet regulated Power supplies in series.

Thread Starter

Harnam123

Joined Nov 25, 2021
3
I designed two 12 Vdc regulated power supplies from a stack of Batteries. I want to put them in series, my question is can I do it? if no waht mods do i need?
I am blowing control circuit when I put them in series.
Thanks,
 

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crutschow

Joined Mar 14, 2008
29,463
What is your purpose for putting them (the power supplies) in series?
Show a circuit diagram of how you are connecting them.
 

LowQCab

Joined Nov 6, 2012
1,911
Why do You need Regulation in the first place ?
What type of Batteries are being used ?
How are You Charging the Batteries ?
What is the Load they are supplying ?
Do You need a "Split-Supply", or do You just need more Voltage ?
.
.
.
 

Juhahoo

Joined Jun 3, 2019
256
You have a common ground point!?
What is the point of connecting MOSFETs such way, what do you try to achieve, they act as resistors??..still you drive them with pulse?...
What connection is that "? -->"

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RPLaJeunesse

Joined Jul 29, 2018
211
You need to add a reverse protection diode across each individual source when wiring multiple sources in series. The diodes should be rated for full normal load current and a voltage noticeably more than the individual supply the diode protects.
 

KeithWalker

Joined Jul 10, 2017
2,292
Your vague sketch is not much help. If you can show us a complete circuit diagram of your dual supply, showing all the batteries, components and interconnections, we may be able to understand and solve the problems you are having.
 
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