A resistor (0.1-0.5Ω) between the MOSFET source and ground, with a trace leading to Pin 13 (CS), confirms current-mode control. Also look for a diode clamp across the primary (RCD snubber).
Understanding the schematic helps technicians identify why the board fails.
A resistor (0.1-0.5Ω) between the MOSFET source and ground, with a trace leading to Pin 13 (CS), confirms current-mode control. Also look for a diode clamp across the primary (RCD snubber).
Understanding the schematic helps technicians identify why the board fails.
