USBPower

Bench power supply (still in development)

Uses an ATmega32u4 USB microcontroller to send control signals for voltage and current regulation to opamps that adjust the feedback to the buck converter preregulator. Another PWM controls an amplifier that scales a 5V PWM to 15V range, to drive the adjustable linear regulator adjust pin. Has voltage sense ADC inputs that read the input, buck, output voltage, and instantaneous current sense value.

Can enable a 2W test load for self calibration of feedback offsets.

Firmware is not finished. Haven't figured out display. Plan is to connect it to the ISP header.