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What is TEA1892ATS?

This electronic component, produced by the manufacturer "NXP Semiconductors", performs the same function as "GreenChip synchronous rectifier controller".


TEA1892ATS Datasheet PDF - NXP Semiconductors

Part Number TEA1892ATS
Description GreenChip synchronous rectifier controller
Manufacturers NXP Semiconductors 
Logo NXP Semiconductors Logo 


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TEA1892ATS
GreenChip synchronous rectifier controller
Rev. 1 — 10 April 2014
Product data sheet
1. General description
The TEA1892ATS is a member of the new generation of Synchronous Rectifier (SR)
controller ICs for switched mode power supplies. Its high level of integration allows the
design of a cost-effective power supply with a very low number of external components.
The TEA1892ATS is a controller IC dedicated to synchronous rectification on the
secondary side of discontinuous conduction mode and quasi-resonant flyback converters.
The TEA1892ATS is fabricated in a Silicon-On-Insulator (SOI) process.
2. Features and benefits
2.1 Distinctive features
Accurate synchronous rectification functionality
Wide supply voltage range (8.5 V to 38 V)
High level of integration, resulting in a very low external component count
High driver output voltage of 10 V to drive all MOSFET brands to the lowest RDSon
Selectable regulation level for driver stage
2.2 Green features
Low current consumption
High system efficiency from no-load to full load
2.3 Protection features
UnderVoltage Protection (UVP)
3. Applications
The TEA1892ATS is intended for adapters. The device can also be used in all other
discontinuous conduction mode systems and quasi-resonant flyback systems that
demand a highly efficient and cost-effective solution.

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TEA1892ATS equivalent
NXP Semiconductors
TEA1892ATS
GreenChip synchronous rectifier controller
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The level of the driver regulation voltage Vreg(drv) can be selected using the SELREG pin.
When this SELREG pin is grounded, the typical Vreg(drv) equals 42 mV. When the
SELREG pin is left open, the Vreg(drv) level equals 30 mV.
Internally, the SELREG pin has a pull-up current source of 10 A. When this pin is short
circuited to ground, the pin selects the lowest Vreg(drv). If the pin is left open, the highest
Vreg(drv) value is selected.
7.4 Supply management
All internal reference voltages are derived from a temperature compensated, on-chip
band gap circuit.
7.5 Driver
The driver circuit to the external power MOSFET gate has a typical source capability of
400 mA and a typical sink capability of 2.7 A. These capabilities permit fast switch-on and
switch-off of the power MOSFET for efficient operation. The source stage is coupled to the
timer (see Figure 1). When the timer has finished, the source capability is reduced to a
small current (5 mA typical) capable of keeping the driver output voltage at its level.
The output voltage of the driver is limited to 10 V (typical). This high output voltage drives
all MOSFET brands to the minimum on-state resistance.
During start-up conditions (VCC < Vstartup) and undervoltage lockout the driver output
voltage is actively pulled low.
TEA1892ATS
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 10 April 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
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Featured Datasheets

Part NumberDescriptionMFRS
TEA1892ATSThe function is GreenChip synchronous rectifier controller. NXP SemiconductorsNXP Semiconductors

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