Simple low current voltage doubling circuit needed

[Potato Cakes]

Hello, everyone,

I am in need of a low current (less than 10mA) DC-DC voltage doubling circuit with SMD parts to fit in a very small PCB footprint. I started out doing research to make my own but most everything I have found involves AC-DC. The small number of examples that I found which are actually DC-DC involve a MOSFET device that switches between capacitors in series, but no guidance on what voltage to feed the gate to create the switching effect. I do not have the time to figure this out and I also despise dealing with power in audio circuits which has become the biggest headache when trying to complete projects. Requirements for the circuit are as follows:

- Input voltage: 45-50VDC
- Input current: less than 10mA
- Output voltage: 90-100VDC
- Output current: 4-10mA
- Fewest parts possible for stable output voltage
- Circuit has to be tested and known to work as required

The last part is especially important. I do not have time to test and verify. A schematic with complete BOM including alternative part numbers is to be delivered upon payment.

Thanks!

Paul

 

[jp8]

Rethink your requirements: you want more output power than is available on the input side.

Jan

 

[gyraf]

If for phantom power, note that at 10mA you have almost no voltage..

/Jakob E.