GreenChip SMPS Primary Side Control IC with QR/DCM Operation
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GreenChip Synchronous Rectifier Controller
The TEA1998TS 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 TEA1998TS 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 TEA1998TS can generate its own supply voltage for battery charging applications with low output voltage or for applications with high-side rectification.
The TEA1998TS is fabricated in a Silicon-On-Insulator (SOI) process.
Product Details
Features
Efficiency
- Adaptive gate drive for maximum efficiency at any load
- Typical supply current in no-load operation below 250 µA
Application
- 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
Control
- 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
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Buy/Parametrics
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Include 0 NRND
Part | Order | CAD Model | Status | Package Type | Minimum SR active time (μs) | Driver activation voltage (mV) | Driver regulation voltage (mV) | Driver deactivation voltage (mV) | Driver activation delay time (ns) |
|---|---|---|---|---|---|---|---|---|---|
Active | TSOP6 | 1.4 | -400 | -25 | 250 | 40 |
Documentation
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2 documents
Compact List
Data Sheet (1)
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GreenChip Synchronous Rectifier controller[TEA1998TS]
User Guide (1)
Design Resources
Hardware
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board types.
1 hardware offering
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Evaluation and Development BoardsTEA1998TS USB BC1.2 Synchronous Rectifier Controller for Flyback
Active
Software
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1 software file
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CAD and CAE Software
USB-PD3.0 / QC4.0 Smart Charging Design Tool
Note: For better experience, software downloads are recommended on desktop.
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