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
n Combined synchronous rectification and primary feedback control functionality
n Wide supply voltage range (8.6 V to 38 V)
n High level of integration, resulting in a very low external component count
n Wide opto output voltage range (3.5 V to 38 V)
n Accurate internal voltage reference for voltage control (within 1 %)
n Separate sense ground for accurate voltage sensing
n High driver output voltage of 10 V to drive all MOSFET brands to the lowest R
DSon
n Reference voltage output pin
2.2 Green features
n Low current consumption
n High system efficiency from no load to full load
2.3 Protection features
n Undervoltage protection
n Internal over-temperature protection
n General purpose protection input pin
TEA1762T
GreenChip synchronous rectifier controller
Rev. 02 — 25 April 2007 Product data sheet
