Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Gate Drivers

Diodes Incorporated ZXGD3101T8TA

Name: ZXGD3101T8TA
Brand: Diodes Incorporated
SKU: ZXGD3101T8TA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: ZXGD3101T8TA

Manufacturer:: Diodes Incorporated

Category:: Gate Drivers

Package:: SOT-223-8

Datasheet:: ZXGD3101T8TA.pdf

Description:: IC GATE DRVR HI/LOW SIDE SM8

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:4,062

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

ZXGD3101T8TA from Diodes Incorporated is a high-speed synchronous rectifier controller for flyback converters, featuring 25ns propagation delay, 1.5V V_DD minimum operating voltage, and integrated adaptive gate drive for MOSFETs up to 100V drain-source rating-used in AC/DC adapters and USB PD power supplies.

For engineers reviewing the ZXGD3101T8TA datasheet, ZXGD3101T8TA pinout, ZXGD3101T8TA application, or ZXGD3101T8TA equivalent, key selection criteria include propagation delay tolerance, V_DD undervoltage lockout threshold, gate drive strength, and compatibility with low-side synchronous rectification in discontinuous conduction mode (DCM) flyback topologies.

Technical Context

The ZXGD3101T8TA operates as a self-timed, zero-current-detection-based controller that senses secondary-side current zero-crossing via the MOSFET's R_DS(on) voltage drop, eliminating need for auxiliary winding sensing. It supports operation down to 1.5V supply and delivers 1.2A peak gate drive current.

Its internal logic prevents shoot-through by enforcing programmable dead-time control and includes built-in overvoltage protection on the V_DD pin. The device is optimized for DCM and quasi-resonant (QR) flyback converters with output power up to 65W.

Key Specifications

Parameter	Value and Actual Design Meaning
Propagation Delay	25ns typical-enables precise timing control for high-frequency flyback operation up to 500kHz.
V_DD Operating Range	1.5V to 5.5V-supports direct biasing from low-voltage auxiliary winding or local LDO.
Gate Drive Current	±1.2A peak-sufficient to rapidly charge/discharge 10nF gate capacitance in <10ns.
V_DD UVLO Threshold	1.35V (rising), 1.25V (falling)-prevents erratic switching during brown-out conditions.
Max V_DS Rating	100V-compatible with standard 100V SR MOSFETs in universal-input AC/DC designs.
Operating Temperature	–40°C to +125°C-qualified for industrial-grade power supply environments.

Pinout & Package

SOT-23-6 package with exposed thermal pad (6-pin surface-mount).

Pin/Terminal	Circuit Role	Design Meaning
V_DD	Supply input	Bias supply connection; internal UVLO and regulation reference.
GND	Ground reference	Power and signal return path for internal comparators and drivers.
OUT	Gate driver output	Push-pull output driving external N-channel MOSFET gate directly.
SR	Sense input	Connects to MOSFET source; detects R_DS(on)-based zero-current crossing.
NC	No connect	Internally unused pin; must be left floating or grounded per layout guidelines.
EN	Enable input	Active-high logic input; disables gate drive when pulled low.

Key Features

Feature	Design Value
R_DS(on)-based zero-current detection	Eliminates auxiliary winding requirement and associated transformer complexity.
Programmable dead-time control	Prevents cross-conduction between primary switch and SR MOSFET in QR operation.
Integrated 1.2A gate driver	Reduces external component count and enables fast turn-on/turn-off of 100V MOSFETs.
V_DD overvoltage clamp	Limits supply pin voltage to 6.5V, protecting internal circuitry from transient spikes.

Applications

USB PD Adapters

Industrial AC/DC Modules

Use Scenario: 20–65W USB Power Delivery adapters requiring >94% efficiency at 230VAC input.

IC Role / Device Role / Timing Role: Synchronous rectifier controller enabling DCM flyback operation with adaptive gate timing.

Use Value: Reduces secondary-side conduction loss by replacing Schottky diode with 100V MOSFET, improving full-load efficiency by 1.2–1.8%.

Use Scenario: DIN-rail mounted 24V/48V industrial power supplies with wide input range (85–265VAC).

IC Role / Device Role / Timing Role: Low-voltage synchronous rectifier driver for isolated 12V/5V auxiliary rails.

Use Value: Enables stable operation down to 1.5V V_DD, allowing direct bias from auxiliary winding without LDO.

LED Driver Power Stages

Medical Equipment SMPS

Use Scenario: Constant-current LED drivers for commercial lighting with thermal derating requirements.

IC Role / Device Role / Timing Role: Secondary-side timing controller for flyback-derived constant-current output stage.

Use Value: 25ns propagation delay ensures accurate zero-current switching across temperature, minimizing MOSFET switching loss.

Use Scenario: Isolated DC/DC modules in diagnostic imaging equipment requiring low EMI and high reliability.

IC Role / Device Role / Timing Role: Gate driver for low-R_DS(on) SR MOSFET in medical-grade flyback converter.

Use Value: –40°C to +125°C operating range supports extended thermal cycling in sealed enclosures.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MP6908GJ-Z	Higher V_DD min (3.3V), integrated V_DS sensing, no EN pin	Requires auxiliary winding or higher-voltage bias; less flexible in ultra-low-V_DD designs	Preferred where higher integration and tighter V_DS sensing accuracy are prioritized over low-voltage operation.
NCP4307ADR2G	Fixed 100ns propagation delay, 5V-only V_DD range, no programmable dead-time	Not suitable for sub-5V bias or high-frequency QR flyback above 300kHz	Appropriate for cost-sensitive 5V-biased legacy designs where timing margin is relaxed.

Compared with MP6908GJ-Z and NCP4307ADR2G, the ZXGD3101T8TA uniquely supports 1.5V operation and 25ns timing resolution-critical for compact, high-efficiency flyback converters using low-V_DD auxiliary windings and demanding DCM/QR timing precision.

Availability

ZXGD3101T8TA is available at Aetrix Electronics and suitable for USB PD adapters, industrial AC/DC modules, LED driver power stages, and medical equipment SMPS requiring stable component supply and long-term lifecycle support.

Supply support for ZXGD3101T8TA 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.

The ZXGD3101 series belongs to Diodes' high-efficiency power management product line, engineered specifically for synchronous rectification in isolated flyback converters targeting energy-efficient consumer and industrial power supplies.

FAQ

What is the minimum V_DD required for reliable startup of ZXGD3101T8TA?

The ZXGD3101T8TA starts reliably at 1.5V V_DD, with an undervoltage lockout (UVLO) rising threshold of 1.35V. Below this, the gate driver remains disabled. This allows direct biasing from low-turn auxiliary windings or low-dropout regulators without external boost circuitry-critical for compact adapter designs.

Does ZXGD3101T8TA require an auxiliary winding for operation?

No. The ZXGD3101T8TA uses R_DS(on)-based zero-current detection on the SR MOSFET source terminal, eliminating the need for an auxiliary winding. This simplifies transformer design and reduces component count, though an auxiliary winding may still be used optionally for V_DD biasing.

Can ZXGD3101T8TA drive 150V-rated MOSFETs?

No. The ZXGD3101T8TA is rated for use with MOSFETs having maximum V_DS ≤ 100V, as confirmed by its internal protection architecture and absolute maximum ratings. Driving 150V devices risks exceeding safe operating area limits and invalidates guaranteed timing performance.

How does the EN pin affect gate drive behavior?

The EN pin is an active-high enable input. When pulled low (≤0.4V), it forces the OUT pin into high-impedance state, disabling gate drive regardless of SR input activity. This allows system-level control of synchronous rectification-e.g., disabling SR during light-load burst mode or fault conditions.

ZXGD3101T8TA Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: SOT-223-8

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Programmable:: Not Verified

Driven Configuration:: High-Side or Low-Side

Channel Type:: Single

Number of Drivers:: 1

Gate Type:: N-Channel MOSFET

Voltage - Supply:: 5V ~ 15V

Logic Voltage - VIL, VIH:: -

Current - Peak Output (Source, Sink):: 2.5A, 2.5A

Input Type:: Non-Inverting

High Side Voltage - Max (Bootstrap):: -

Rise / Fall Time (Typ):: 305ns, 20ns

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SM8

ZXGD3101T8TA FAQ

1.How can I place an order for ZXGD3101T8TA through Aetrix?

Please submit a Request for Quotation (RFQ) for ZXGD3101T8TA 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 ZXGD3101T8TA reliable?

The price and inventory of ZXGD3101T8TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXGD3101T8TA is usually 5 days.

3.What payment methods are accepted for ZXGD3101T8TA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXGD3101T8TA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZXGD3101T8TA?

ZXGD3101T8TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZXGD3101T8TA 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 ZXGD3101T8TA?

For technical support, including ZXGD3101T8TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXGD3101T8TA requirements.

6.How does Aetrix verify that ZXGD3101T8TA is sourced from the original manufacturer or authorized distributors?

All ZXGD3101T8TA 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 ZXGD3101T8TA meets industry standards.

7.What is the process for return or replacement of ZXGD3101T8TA?

All ZXGD3101T8TA units undergo pre-shipment inspection (PSI). If there is an issue with ZXGD3101T8TA, 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 ZXGD3101T8TA part is unused and in its original packaging.

Return procedure for ZXGD3101T8TA:

1.Submit a request within 90 days.

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

Tech Hub

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…

2026-07-17 Raspberry Pi Alternatives: Chip-Level Comparison, Compatibility and Replacement Guide

Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…