IRS2548D

September 29, 2011 IRS2548D SMPS/LED DRIVER PFC + HALF-BRIDGE CONTROL IC Features PFC, system control and half-bridge driver in one IC Critical-conduction mode boost-type PFC Programmable PFC over-current protection Half Bridge Driver Half Bridge Over Current Protection Variable Frequency Oscillator Fixed internal 1.6us HO and LO deadtime Internal bootstrap MOSFET Internal 15.6V zener clamp diode on Vcc Micropower startup (250µA) Latch immunity and ESD protection Product Summary Topology VOFFSET VOUT Io+ & I o- (typical) tON & tOFF (typical) Deadtime (typical) Half Bridge 600V VCC 500mA/500mA 120nS/50nS 1.6uS Package Typical Applications Isolated LED Drivers Power Supplies 14-Lead SOIC http://www.DataSheet4U.com/ Typical Connection Diagram LPFC DPFC RVBUS1 RVCC RVBUS2 L N F1 RV1 C1 CVBUS1 + RPU CVBUS VBUS BR1 RVBUS RFMIN U1 L1 1 2 HO RHO 14 VS MHS FMIN 13 LED+ CBS CVS DOUT1 RLM1 + DCP2 IRS2548D GND CY CCO MP RZX COMP VB U3 3 4 5 6 7 7 12 11 10 9 8 LO CS VCC COM RLM2 Reg +5V ZX C2 MPFC PFC RP FC OC ROC CVBUS2 + ENN CVCC 2 CVCC1 RLO CVS RV1 MLS DCP 1 RD1 DOUT2 COUT RMAX RF1 U2A CF1 CRES RD2 RFMAX LEDRF2 RV2 CMAX ROC COC CCS RCS CF2 U2B RD3 R CL DO1 DO2 www.irf.com © 2011 International Rectifier IRS2548D Table of Contents Description Qualification Information Absolute Maximum Ratings Recommended Operating Conditions Electrical Characteristics Functional Block Diagram State Diagram Input/Output Pi...