After seeing the reply by MrAl to throbscottle's Hybrid PSU thread, proposing this circuit I felt I could ask for the equivalent for the negative rail.
The (ADJ) switchers LM2575 or LM2576 are available locally, but I do not know where to start. No LTspice model seems to exist nor examples of a negative buck converter in the datasheets I got. I believed the LT1070 family was kind of a replacement but it isn't.
With no load, after filtering, I have 36V DC per rail available. I do not expect needing more than 2A. Say 3A if you like.
Any help will be much appreciated.
The (ADJ) switchers LM2575 or LM2576 are available locally, but I do not know where to start. No LTspice model seems to exist nor examples of a negative buck converter in the datasheets I got. I believed the LT1070 family was kind of a replacement but it isn't.
With no load, after filtering, I have 36V DC per rail available. I do not expect needing more than 2A. Say 3A if you like.
Any help will be much appreciated.