《irs2538dspbf 单芯片电子镇流器》.pdfVIP

IRS2538DSPBF Magnetic Replacement Ballast IC Features Description  Ballast control plus half-bridge driver in one IC This IC takes full advantage of IR’s patented ballast and high-voltage technologies to realize a simple, high-  Single-stage topology (no PFC stage required) performance magnetic ballast replacement solution.  High PF and low THD The IC includes a novel single-stage circuit topology  Preheat, ignition and running lamp modes and control method to achieve high power factor and  Closed-loop lamp current control low THD without a PFC stage or any electrolytic  Half-bridge NZVS protection capacitors. A single high-voltage pin senses the half-  Adaptive dead-time bridge voltage to perform necessary protection  Lamp insert auto-restart functions. Closed-loop control of the lamp current  Internal bootstrap MOSFET provides constant lamp brightness over a wide line input  Micro-p