GreenChip Synchronous Rectifier Controller

TEA1993TS

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The TEA1993TS 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 TEA1993TS 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 TEA1993TS can generate its own supply voltage for battery charging applications with low output voltage or for applications with high-side rectification.

The TEA1993TS is fabricated in a Silicon-On-Insulator (SOI) process.

The TEA1993TS 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.

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TEA1993TS Block Diagram

TEA1993TS Block Diagram
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Features

Key Features

  • Adaptive gate drive for maximum efficiency at any load
  • Typical supply current in no-load operation below 200 μA
  • Operates in a wide output voltage range down to 0 V
  • Drain sense pin capable of handling input voltages up to 120 V
  • Self-supplying for operation with a 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, USB PD, and Quick charge applications
  • TSOP6 package
  • Adaptive gate drive for fast turn-off at the end of the 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.

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