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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Power Supply Controllers, Monitors

NXP Semiconductors TEA1998TS/1Z

Name: TEA1998TS/1Z
Brand: NXP Semiconductors
SKU: TEA1998TS/1Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TEA1998TS/1Z

Manufacturer:: NXP Semiconductors

Category:: Power Supply Controllers, Monitors

Package:: SC-74, SOT-457

Datasheet:: TEA1998TS/1Z.pdf

Description:: IC SYNC RECT CONTROLLER 6TSOP

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Product details

Overview

TEA1998TS/1Z from NXP Semiconductors is a GreenChip synchronous rectifier (SR) controller IC for flyback SMPS secondary-side operation, featuring adaptive gate drive, drain-source differential sensing (−400 mV activation), 25 mV regulation voltage, and self-supply capability for low-voltage (<4.7 V) or high-side rectification applications in USB BC/QuickCharge adapters.

For engineers reviewing the TEA1998TS/1Z datasheet, TEA1998TS/1Z pinout, TEA1998TS/1Z application, or TEA1998TS/1Z equivalent, key selection considerations include its TSOP6 package, 0.70 A source / 0.50 A sink gate drive, UVLO with active pull-down, and compatibility with standard and logic-level SR MOSFETs in high-efficiency flyback designs.

Technical Context

The TEA1998TS/1Z implements a dual-stage sensing architecture: DRAIN and SOURCE pins measure the external SR MOSFET's V_DS to trigger and regulate gate drive, with turn-on at −400 mV and regulation maintained at −25 mV (typ). Its adaptive control ensures fast turn-off via 250 mV drain-sense switch-off threshold and 3 Ω active gate pull-down.

Startup is managed through dual supply paths: CAP pin charging via DRAIN when XV < 4.7 V, or via XV with internal regulation when XV ≥ 4.7 V. The IC operates across 0–10 V output range, supports no-load current <250 μA, and uses Silicon-On-Insulator (SOI) process for robustness in high-dI/dt environments.

Key Specifications

Parameter	Value and Actual Design Meaning
Gate drive source/sink	0.70 A source / 0.50 A sink enables fast switching of standard and logic-level SR MOSFETs
V_DS activation threshold	−400 mV (typ) triggers SR MOSFET turn-on during negative drain-source voltage swing
V_DS regulation level	−25 mV (typ) maintains optimal conduction loss by dynamically adjusting gate voltage
Switch-off threshold	250 mV (typ) on DRAIN pin initiates fast gate discharge with 3 Ω pull-down
UVLO start/stop	3.7 V (typ) start and 3.6 V (typ) stop on CAP pin ensure stable startup and fault recovery
No-load supply current	<250 μA enables energy-efficient standby in battery chargers and adapters
Drain sense voltage range	−0.8 V to +60 V supports wide-range flyback operation including high-side configurations

Pinout & Package

TEA1998TS/1Z is housed in a TSOP6 (SOT457) plastic surface-mounted package - 6-lead, 1.1 mm max height, 3.1 × 2.7 mm body, 0.95 mm pitch - optimized for compact flyback secondary-side layouts with thermal resistance R_th(j-a) = 200 K/W.

Pin/Terminal	Circuit Role	Design Meaning
CAP	Internal supply capacitor input	Provides decoupling and energy storage for self-supply; charged via DRAIN or XV depending on voltage level
GND	Ground reference	Common return path for all internal circuits and gate driver sink current
XV	External supply input	Accepts 0–10.5 V input; regulates gate drive voltage (4.7–10 V) and enables auxiliary-free high-side operation
GATE	SR MOSFET gate driver output	Delivers up to 0.70 A source / 0.50 A sink; output clamped to CAP voltage (max 10 V)
SOURCE	SR MOSFET source sense input	Enables Kelvin sensing of MOSFET source node to reject PCB trace inductance errors
DRAIN	SR MOSFET drain sense input	Handles −0.8 V to +60 V; detects V_DS polarity and magnitude for turn-on, regulation, and switch-off

Key Features

Feature	Design Value
Adaptive gate drive	Real-time V_DS feedback loop maintains −25 mV regulation, minimizing conduction loss across load range
Self-supply capability	Eliminates auxiliary winding in high-side rectification and enables operation down to 0 V output voltage
Drain-source differential sensing	Separate DRAIN and SOURCE pins enable accurate Kelvin measurement, rejecting parasitic inductance effects
UVLO with active gate pull-down	Ensures safe SR MOSFET shutdown during brown-out; prevents shoot-through during power-up/down
Logic-level MOSFET support	Configurable gate drive (4.9 V typical at XV = 5 V) allows use of low-V_GS(th) devices without external level shifters

Applications

USB-C PD Adapters	Smartphone Fast Chargers
Use Scenario: 20–100 W USB-C Power Delivery adapters requiring >94% efficiency at light and full load. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier controller managing SR MOSFET turn-on/timing based on transformer secondary voltage polarity and magnitude. Use Value: Adaptive −25 mV regulation and <250 μA no-load current directly reduce standby losses and improve average efficiency per DOE Level VI/CoC Tier 2.	Use Scenario: Dual-port QC 4+/USB BC 1.2 wall chargers with variable-output flyback topology. IC Role / Device Role / Timing Role: Dedicated SR controller enabling high-side or low-side MOSFET placement without auxiliary bias, supporting dynamic voltage negotiation. Use Value: Self-supply operation and 0–10 V output range allow seamless integration with programmable output controllers like TEA19161 or INN3x78.
Low-Voltage Industrial PSUs	High-Density Laptop Adapters
Use Scenario: 5–12 V output flyback supplies for embedded systems where auxiliary winding space is constrained. IC Role / Device Role / Timing Role: Synchronous rectifier supervisor using drain-source sensing to replace output diode, eliminating forward voltage drop. Use Value: Elimination of auxiliary winding reduces BOM count and PCB area; SOI process ensures reliability under high dI/dt transients.	Use Scenario: 65 W slim-profile laptop adapters demanding minimal conduction loss and thermal footprint. IC Role / Device Role / Timing Role: Gate driver with 0.70 A source/0.50 A sink and 3 Ω active pull-down ensures sub-100 ns MOSFET switching transitions. Use Value: Fast turn-off and precise −25 mV regulation reduce RMS conduction loss by up to 35% vs. fixed-threshold SR controllers.

USB-C PD Adapters

Smartphone Fast Chargers

Use Scenario: 20–100 W USB-C Power Delivery adapters requiring >94% efficiency at light and full load.

IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier controller managing SR MOSFET turn-on/timing based on transformer secondary voltage polarity and magnitude.

Use Value: Adaptive −25 mV regulation and <250 μA no-load current directly reduce standby losses and improve average efficiency per DOE Level VI/CoC Tier 2.

Use Scenario: Dual-port QC 4+/USB BC 1.2 wall chargers with variable-output flyback topology.

IC Role / Device Role / Timing Role: Dedicated SR controller enabling high-side or low-side MOSFET placement without auxiliary bias, supporting dynamic voltage negotiation.

Use Value: Self-supply operation and 0–10 V output range allow seamless integration with programmable output controllers like TEA19161 or INN3x78.

Low-Voltage Industrial PSUs

High-Density Laptop Adapters

Use Scenario: 5–12 V output flyback supplies for embedded systems where auxiliary winding space is constrained.

IC Role / Device Role / Timing Role: Synchronous rectifier supervisor using drain-source sensing to replace output diode, eliminating forward voltage drop.

Use Value: Elimination of auxiliary winding reduces BOM count and PCB area; SOI process ensures reliability under high dI/dt transients.

Use Scenario: 65 W slim-profile laptop adapters demanding minimal conduction loss and thermal footprint.

IC Role / Device Role / Timing Role: Gate driver with 0.70 A source/0.50 A sink and 3 Ω active pull-down ensures sub-100 ns MOSFET switching transitions.

Use Value: Fast turn-off and precise −25 mV regulation reduce RMS conduction loss by up to 35% vs. fixed-threshold SR controllers.

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous rectifier controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor NCP4306DR2G	Fixed −30 mV regulation; no self-supply mode; requires auxiliary winding for startup	Limited to low-side rectification only; not suitable for <4.7 V outputs or high-side topologies	Select when cost sensitivity outweighs efficiency flexibility and auxiliary winding is available
Diodes Incorporated AP4313KTR-G1	−200 mV activation; 1.2 A gate drive; no integrated UVLO pull-down; higher quiescent current (~400 μA)	Supports wider V_DS range (−100 V to +100 V); less optimized for ultra-low standby	Prefer for high-voltage industrial flybacks where robustness > sub-250 μA standby

Compared with NCP4306DR2G and AP4313KTR-G1, TEA1998TS/1Z uniquely combines self-supply operation, adaptive −25 mV regulation, and active UVLO pull-down-enabling high-efficiency, auxiliary-free designs across 0–10 V output range without sacrificing startup reliability or light-load performance.

Availability

TEA1998TS/1Z is available at Aetrix Electronics and suitable for USB-C PD adapters, smartphone fast chargers, and low-voltage industrial power supplies requiring stable component supply, long-term lifecycle assurance, and compliance with global energy efficiency standards.

Supply support for TEA1998TS/1Z includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and consumer applications.

The TEA1998TS/1Z belongs to NXP's GreenChip family of high-efficiency power conversion ICs, designed specifically to maximize flyback converter efficiency through intelligent synchronous rectification and adaptive control in compact, thermally efficient packages.

FAQ

What is the primary function of the TEA1998TS/1Z in a flyback power supply?

The TEA1998TS/1Z serves as a dedicated synchronous rectifier controller on the secondary side of flyback converters. It senses the drain-source voltage of an external SR MOSFET via separate DRAIN and SOURCE pins, then drives the MOSFET gate to replace the output rectifier diode-reducing conduction losses and improving overall efficiency. Its adaptive regulation at −25 mV ensures optimal performance across load conditions, and the TEA1998TS/1Z supports both low-side and high-side configurations without auxiliary windings.

How does the TEA1998TS/1Z achieve self-supply operation in low-voltage applications?

The TEA1998TS/1Z achieves self-supply operation by charging its internal CAP pin capacitor either through the DRAIN pin (when XV voltage is below 4.7 V) or through the XV pin (when XV ≥ 4.7 V). This dual-path architecture enables reliable startup and continuous operation even with output voltages as low as 0 V-critical for USB BC and QuickCharge applications. The TEA1998TS/1Z thus eliminates the need for an auxiliary winding in battery charging and high-side rectification designs.

What are the key timing-related parameters of the TEA1998TS/1Z gate driver?

The TEA1998TS/1Z gate driver features a minimum synchronous rectification active time of 1.4 μs (typ), driver activation delay of 40 ns (typ), and driver deactivation delay of 40 ns (typ). These tightly controlled timing parameters ensure precise MOSFET switching aligned with transformer secondary voltage polarity-minimizing reverse recovery losses and preventing cross-conduction. The TEA1998TS/1Z also integrates a 250 mV drain-sense threshold to initiate fast gate pull-down, enhancing reliability during transient events.

Can the TEA1998TS/1Z drive both standard and logic-level SR MOSFETs?

Yes, the TEA1998TS/1Z supports both standard and logic-level SR MOSFETs. When the XV pin is grounded, the gate driver is regulated to ~10 V, sufficient for standard MOSFETs. When XV is connected to the output (e.g., 5 V), the driver output is regulated to ~4.9 V-ideal for logic-level devices with low V_GS(th). This configurability, combined with 0.70 A source / 0.50 A sink capability, allows the TEA1998TS/1Z to drive diverse MOSFETs without external level-shifting circuitry.

What thermal and packaging advantages does the TEA1998TS/1Z offer for high-density designs?

The TEA1998TS/1Z uses a TSOP6 (SOT457) package-3.1 × 2.7 mm, 1.1 mm max height-with JEDEC-standard thermal resistance R_th(j-a) = 200 K/W and R_th(j-c) = 115 K/W. Fabricated in Silicon-On-Insulator (SOI) technology, it delivers inherent immunity to latch-up and improved transient robustness in high-dI/dt flyback secondaries. These attributes make the TEA1998TS/1Z especially suitable for slim-profile adapters and space-constrained industrial PSUs where thermal density and layout simplicity are critical.

TEA1998TS/1Z Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: GreenChip™

Package/Case:: SC-74, SOT-457

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Applications:: Secondary-Side Controller, Synchronous Rectifier

Voltage - Input:: -

Voltage - Supply:: 60V

Current - Supply:: 250 µA

Operating Temperature:: -40°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SC-74

TEA1998TS/1Z FAQ

1.How can I place an order for TEA1998TS/1Z through Aetrix?

Please submit a Request for Quotation (RFQ) for TEA1998TS/1Z on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TEA1998TS/1Z reliable?

The price and inventory of TEA1998TS/1Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TEA1998TS/1Z is usually 5 days.

3.What payment methods are accepted for TEA1998TS/1Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TEA1998TS/1Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TEA1998TS/1Z?

TEA1998TS/1Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TEA1998TS/1Z order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TEA1998TS/1Z?

For technical support, including TEA1998TS/1Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TEA1998TS/1Z requirements.

6.How does Aetrix verify that TEA1998TS/1Z is sourced from the original manufacturer or authorized distributors?

All TEA1998TS/1Z products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TEA1998TS/1Z meets industry standards.

7.What is the process for return or replacement of TEA1998TS/1Z?

All TEA1998TS/1Z units undergo pre-shipment inspection (PSI). If there is an issue with TEA1998TS/1Z, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TEA1998TS/1Z part is unused and in its original packaging.

Return procedure for TEA1998TS/1Z:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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