TEA1995T
GreenChip dual synchronous rectifier controller
Rev. 3 — 5 December 2017
Product data sheet
1 General descr...
TEA1995T
GreenChip dual synchronous rectifier controller
Rev. 3 — 5 December 2017
Product data sheet
1 General description
The TEA1995T is the first product of a new generation of Synchronous Rectifier (SR) controller ICs for switched mode power supplies. It incorporates an adaptive gate drive method for maximum efficiency at any load. The TEA1995T 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 rectify the outputs of the central tap secondary transformer windings. The two gate driver stages have their own sensing inputs and operate independently. The TEA1995T can also be used in multi-output flyback converters with the SR
MOSFET placed at the low side. The TEA1995T is fabricated in a Silicon-On-Insulator (SOI) process.
2 Features and benefits
2.1 Efficiency features
Adaptive gate drive for maximum efficiency at any load Supply current in energy save operation below 200 μA
2.2 Application features
Wide supply
voltage range from 4.5 V to 38 V Dual synchronous rectification for LLC resonant in SO8 package Synchronous rectification for multi-output flyback converters Supports 5 V operation with logic level SR
MOSFETs Differential inputs for sensing the drain and source
voltages of each SR
MOSFET
2.3 Control features
SR control without minimum on-time Adaptive gate drive for fast turn-off at the end of conduction Under
Voltage LockOut (UVLO) p...