TEA19051BAATK/1J NXP

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 A 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 UnderVoltage LockOut (UVLO) protection with active gate pull-downNXP Semiconductors TEA1995T GreenChip dual synchronous rectifier controller 3 Applications The TEA1995T is intended for resonant power supplies. In such applications, it can drive two external synchronous rectifier MOSFETs for the rectification of the voltages on the two secondary windings of the transformer. These MOSFETs replace diodes. It can be used in all power supplies requiring high efficiency: Adapters Power supplies for desktop PC and all-in-one PC Power supplies for television Power supplies for servers 4 Ordering information Table 1.Ordering information Type number Package Name Description Version TEA1995T/1 SO8 plastic small outline package 8 leads body width 3.9 mm SOT96-1 5 Marking Table 2.Marking Type number Marking code TEA1995T/1 TEA1995 TEA1995T All information provided in this document is subject to legal disclaimers. NXP B.V. 2017. All rights reserved. Product data sheet Rev. 3 5 December 2017 2 / 18