The RAA223021 evaluation board (RTKA223021DE0000BU) is a high voltage buck converter that demonstrates a low-cost high performance non-isolated AC/DC convertor. It operates from a universal input of 85VAC to 265VAC and has a 12V output capable of up to 667mA of load current. The board has built-in overcurrent, short-circuit, input brownout, and over-temperature protection, and is designed on a single sided PCB with full-wave input rectification.