TEA1999TK/2J NXP

TEA1999TK/2 GreenChip synchronous rectifier controller Rev. 3 13 September 2018 Product data sheet 1 General description The TEA1999TK is a member of a new generation of Synchronous Rectifier (SR) controller ICs for switched mode power supplies with adaptive gate drive for maximum efficiency at any load. The TEA1999TK is a dedicated controller IC for synchronous rectification on the secondary side of flyback converters. It incorporates the sensing stage and driver stage for driving the SR MOSFET, which is rectifying the output of the secondary transformer winding. The TEA1999TK can generate its own supply voltage for battery charging applications with low output voltage or for applications with high-side rectification. The TEA1999TK 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 Typical supply current in no-load operation below 250 A 2.2 Application features Operates in an output voltage range between 26 V and 0 V Drain sense pin capable of handling input voltages up to 120 V Self-supplying for operation with low output voltage Self-supplying for high-side rectification without the use of an auxiliary winding Operates with standard and logic level SR MOSFETs Supports USB BC, QuickCharge, and smart charging applications HVSON8 package 2.3 Control features Adaptive gate drive for fast turn-off at the end of conduction UnderVoltage LockOut (UVLO) with active gate pull-down Blanking input for low and high switching frequency Enable input for CCM operation and for disabling at start-up or shorted outputNXP Semiconductors TEA1999TK/2 GreenChip synchronous rectifier controller 3 Applications The TEA1999TK is intended for flyback power supplies. In such applications, it can drive the external synchronous rectifier MOSFET, which replaces the diode for the rectification of the voltage on the secondary winding of the transformer. It can be used in all power supplies that require a high efficiency, like: Chargers Adapters Flyback power supplies with very low and/or variable output voltage 4 Ordering information Table 1.Ordering information Type number Package Name Description Version TEA1999TK/2 HVSON8 plastic thermal enhanced very thin small outline package no leads 8 SOT782-1 terminals body 3 mm 3 mm 0.85 mm 5 Marking Table 2.Marking code Type number Marking code TEA1999TK/2 E1999 TEA1999TK All information provided in this document is subject to legal disclaimers. NXP B.V. 2018. All rights reserved. Product data sheet Rev. 3 13 September 2018 2 / 21