I'm using two ADHV4702-1 high voltage op amps for a project. They are configured as a current sink with a class B output amplifier (with some fixes for the crossover distortion). I already have a +/-12V supply for other parts of the circuit (two lead acid batteries), but I'm not sure how I can generate +/-110 volts for the ADHVs. The maximum current is about 25 to 30mA so it's not a high power application, just high voltage. I thought about using batteries for the 110v rails as well, but that needs a ton of batteries in series which I don't have the space for. I tried looking up boost converters that can generate those voltages but had no luck, just ones with positive output voltage. Can you please help me create a circuit that generates those rails?
Here is the full schematic and simulation for the circuit, although not really that important.