TEA1762T

TEA1762T GreenChip synchronous rectifier controller Rev. 02 — 25 April 2007 www.datasheet4u.com Product data sheet 1. General description The TEA1762T is a member of the new generation of Synchronous Rectifier (SR) controller ICs for switched mode power supplies. Its high level of integration allows the design of a cost-effective power supply with a very low number of external components. The TEA1762T is a controller IC dedicated for synchronous rectification on the secondary side of discontinuous conduction mode and quasi resonant flyback converters. Besides electronics for synchronous rectification, it also has integrated circuitry for output voltage and output current regulation. The TEA1762T is fabricated in a Silicon On Insulator (SOI) process. This NXP SOI process makes possible a wide range of operation. 2. Features 2.1 Distinctive features I I I I I I I I Combined synchronous rectification and primary feedback control functionality Wide supply voltage range (8.6 V to 38 V) High level of integration, resulting in a very low external component count Wide opto output voltage range (3.5 V to 38 V) Accurate internal voltage reference for voltage control (within 1 %) Separate sense ground for accurate voltage sensing High driver output voltage of 10 V to drive all MOSFET brands to the lowest RDSon Reference voltage output pin 2.2 Green features I Low current consumption I High system efficiency from no load to full load 2.3 Protection features I Undervoltage protection I Inte...