This board is a general purpose power controller. It fulfills several functions:

• Inrush Current Limiting
• Power Switch Sontrol
• Power ORing
• Battery Charging
• Shunt Regulation
• DC-DC Conversion
• Configuration Interface
• USB Logging
• Current and Voltage sensing

It is intended to handle a 48V supply, but can charge the batteries at a lower voltage using its zero-dropout regulator. The battery charging regulator is current limited to protect the batteries.

Voltage from back-EMF without regulation:

Voltage with the shunt regulator engaged:

Test setup:

Gallery: