IRS2538DSPBF Infineon

IRS2538DSPBF Magnetic Replacement Ballast IC Features Description This IC takes full advantage of IRs patented ballast Ballast control plus half-bridge driver in one IC 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 15.6V internal zener clamp on VCC algorithms in a single 8-pin IC results in a large reduction in component count, an increase in Excellent ESD and latch immunity manufacturability and reliability, a reduced design cycle RoHS compliant time, while maintaining high ballast system 8-pin SO8 package performance. Package Options Applications Magnetic replacement electronic ballast Low cost electronic ballast 8-Lead SOIC Application Diagram F1 L1 L 220VAC LINE C1 BR1 INPUT RVCC1 N RVCC2 RLIM1 VCC VB RLIM2 CBUS 1 8 RHO MHS COM HO CVCC1 CVCC2 LRES:A CDC 2 7 CBS CFB FB VS CSNUB LRES:B 3 6 CH1 CVCO DCP2 RVIGN1 VCO RLO LO CRES MLS 4 5 RLMP2 RVIGN2 RFB RLMP1 CH2 DIGN DZIGN RVIGN3 LRES:C DCP1 RCS Ordering Information Standard Pack Base Part Number Package Type Orderable Part Number Form Quantity IRS2538DSPBF SO8N Tape and Reel 2500 IRS2538DSTRPBF 1 www.irf.com 2013 International Rectifier Aug 16, 2013 IRS2538D IRS2538DSPBF Functional Block Diagram Bootstrap MOSFET VCC 1 8 VB Driver UVLO High-Side Logic COM 2 Half-bridge 7 HO Driver 6 VS Voltage VCO 4 Controlled Oscillator Mode Half-bridge Logic Voltage Sensing Non-ZVS Closed-loop Protection Current Low-Side Control Half-bridge 5 LO Driver Ignition Regulation FB 3 Restart Logic 2 www.irf.com 2013 International Rectifier Aug 16, 2013