文档介绍：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-power start-up current voltage range. Combining these high-voltage control
internal zener clamp on VCC algorithms in a single 8-pin IC results in a large
Excellent ESD and latch immunity reduction in component count, an increase in
RoHS compliant manufacturability and reliability, a reduced design cycle
8-pin SO8 package time, while maintaining high ballast system
performa