Hello everyone,
I'm working on a project that requires generating a regulated -12V output from a +15V DC input (up to 1A).
Here are my key specifications for the negative output voltage:
- Regulated DC voltage: -12V (±10%)
- Output current: 100mA max
- Cost constraint: Total solution must be under $3
I was previously using the integrated DC-DC converter P78E12-1000 (configured for a negative output), but unfortunately, it's no longer available. It was affordable and worked well for my application.
As a replacement, I've considered the DC-DC converter 173951236, but I'm exploring whether there might be a cheaper alternative that doesn't rely on integrated DC-DC converters, as this seems like a common circuit requirement.
I've looked into inverting buck-boost converters like the LM2662, LM2577, LT1054, and MAX766, but these options seem too expensive for my budget (total design cost exceeds $3). Additionally, charge pump converters don't seem viable, as they can't handle the 100mA output current I need.
Does anyone have suggestions for a cheap and efficient solution that meets my specifications?
Thank you very much for your time and help!
Have a great day!