GreenChip Synchronous Rectifier Controller


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Block Diagram

TEA1998TS Block Diagram

TEA1998TS Block Diagram



  • Adaptive gate drive for maximum efficiency at any load
  • Typical supply current in no-load operation below 250 µA


  • Operates in an output voltage range between 10 V and 0 V
  • Drain sense pin capable of handling input voltages up to 60 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
  • TSOP6 package


  • Adaptive gate drive for fast turn-off at the end of conduction
  • UnderVoltage LockOut (UVLO) with active gate pull-down

NXP GreenChip

  • This product is part of the NXP GreenChip portfolio, this program optimizes for energy efficiency in mobile and computing applications, specializing in high-power density, safety and reliability.

Target Applications

The TEA1998TS 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


Quick reference to our documentation types.

2 documents

Design Resources


2 hardware offerings


1 software file

Note: For better experience, software downloads are recommended on desktop.

Engineering Services

1 engineering service

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