TEA1795T
GreenChip synchronous rectifier controller
Rev. 1 — 4 November 2010
Product data sheet
1. General description...
TEA1795T
GreenChip synchronous rectifier controller
Rev. 1 — 4 November 2010
Product data sheet
1. General description
The TEA1795T is a member of the new generation of Synchronous Rectifier (SR) controller ICs for switched mode power supplies. Its high level of integration enables the design of a cost-effective power supply with a minimum number of external components.
The TEA1795T is a dedicated controller IC for synchronous rectification on the secondary side of resonant converters. It has two driver stages for driving the SR
MOSFETs, which are rectifying the outputs of the central tap secondary transformer windings.
The two gate driver stages have their own sensing inputs and operate independently of each other.
The TEA1795T is fabricated in a Silicon On Insulator (SOI) process.
2. Features and benefits
2.1 Distinctive features
Accurate synchronous rectification functionality Wide supply
voltage range (8.5 V to 38 V) Separate sense inputs for sensing the drain and source
voltage of each SR
MOSFET High level of integration, resulting in a minimum external component count High driver output
voltage of 10 V to drive all
MOSFET brands to the lowest RDSon
2.2 Green features
Low current consumption High system efficiency from no load to full load
2.3 Protection features
Under
Voltage Protection (UVP)
3. Applications
The TEA1795T is intended for resonant power supplies. In such applications, it can drive two external synchronous rectifier
MOSFETs which replace d...