Isolated dual-output power supply 8-10 W

Applications
1

Dear MPS,

which one of your power management ICs would you recommend for a dual-output power supply?

  • Input 24 VDC
  • Output 1 (nominal) voltage: +24 VDC
  • Output 2 (nominal) voltage: -15 VDC
  • Max. output current: 0.2 A
  • Max. output power: 4.8 W + 3.0 W = 7.8 W
  • Both outputs galvanically isolated from the input

The outputs may be regulated or unregulated.

At first I was evaluating competitor’s push-pull transformer driver, but realized two of them may be needed due to power limitations (<6 W). Does MPS have suggestions for a suitable switch-mode topology or IC?

2

Hello,

We have the following transformer driver that may be of interest to you, however given the load current capability, it would likely be a single output IC:
MPQ18913 | 30V, 0.3A, High-Frequency Transformer Driver for Automotive Applications, AEC-Q100 | MPS

3

I think for this application you can test and see if a dual output transformer where the second output has a center tapped secondary would work for your application… assuming 0.2A is the combined load current from both outputs. Just wanted to check and see but based on the power you provided I don’t think this is the case.

Hope this helped.

Best,

Krishan