RDK-251 [Power Integrations]

This reference design implements a single-stage power factor corrected LED driver with constant current output of 350 mA ±8% for 12-18 V LED strings. It features >100:1 dimming range with TRIAC dimmers, fast start-up (<300 ms), and comprehensive protections including output open/short-circuit protection and thermal shutdown. The design achieves >73% efficiency in dimmable configuration and >78% in non-dimmable mode while meeting EMI standards (CISPR22B/EN55015) and harmonic requirements (EN61000-3-2).