But this chip is +-/15V. Do you know any similar IC that can provide a higher voltage rails. Or could you please provide some
starting points how to design +/-20V 100mA's ? Thank you so much.
Might look at the application figures and see whether
this is just a change to feedback network or is bound
up by some inherent limitations in the product.
You might prefer a good-to-go module like from Pico
or others in the low-power, medium-voltage space.
If the output is isolated then you can use two of them
and wire them to get split supply, and not have to
worry about cross-regulation as with a single controller.
Might look at the application figures and see whether
this is just a change to feedback network or is bound
up by some inherent limitations in the product.
You might prefer a good-to-go module like from Pico
or others in the low-power, medium-voltage space.
If the output is isolated then you can use two of them
and wire them to get split supply, and not have to
worry about cross-regulation as with a single controller.
I think most IC will have a limitation at around 32V or so range because many IC processes are designed to support automobile or LCD devices. So it's not surprising to see many chips have a maximum voltage swing around that range.
What is Pico power module? They look like power supply for CPU.
I overstated my specs for the current requirement. My design needs around 50mA; so that is 200mW. Pico low-power PSU is hundreds of watts.
Might recommend using their 24V-output ones, with
LM7805/LM7905 post-regulators to get your +/-20V?
For that matter, as low as the actual mA need is, maybe
something like a self-oscillating push-pull, full wave
bridge to get about +/-24V and post-regulation with
those same linears? I forget the proper name of the
self-oscillating push-pull inverter....