资 源 简 介
The LinkSwitch™-PH dramaTIcally simplifies implementaTIon of LED drivers requiring long lifeTIme， high efficiency， PF 》0.9， and TRIAC dimming capability （LNK403-410）。 The single-stage combined power factor and constant-current controller eliminates a switching stage and the electrolyTIc bulk capacitor. The advanced primary-side control used by the LinkSwitch-PH device provides accurate constant current control while eliminating the need for an optocoupler and current sensing circuits. LinkSwitch-PH incorporates a 725 V power FET， a continuousmode PWM controller， a high-voltage switched current source for self biasing， frequency jittering， protection circuitry including cycle-by-cycle current limit and hysteretic thermal shutdown.
