PMP7760, 30V-800V input to 21V@1.5A output, High Voltage Flyback Converter Reference Design

PMP7760, is a high voltage flyback DC-DC converter with Q100 and D100 qualification. The design includes an external bias supply to withstand 800V. LM5022 used in the circuit has additional features like an error amplifier, precision reference, line under-voltage lockout, cycle-by-cycle current limit, slope compensation, soft-start, external synchronization capability and thermal shut-down