Her eyes traced the block in the top-left corner. Two thick, parallel lines snaked from a connector labeled CN1. They led straight to a bulbous, four-legged diode bridge, marked DB1 . This was the "gatekeeper." It took the raw, chaotic 120V from the wall and chopped it into a crude, pulsing DC. Just past it, two massive, swollen-looking symbols: the primary filter capacitors, C5 and C6 . 470µF, 200V. She remembered the blown ones in her actual board—bulging like soda cans left in a freezer.

: Integrated gate drivers for the high-side and low-side IGBTs, which allow the module to be driven directly by a microcontroller.

: Is there clear documentation available? Are there notes or comments that explain the design decisions, expected performance, or troubleshooting tips?

Primary winding between bulk cap and MOSFET drain. Auxiliary winding supplies VCC. Secondary winding (center-tapped or single) goes to the output rectifier.