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

Diodes Incorporated ZXGD3104N8TC

Name: ZXGD3104N8TC
Brand: Diodes Incorporated
SKU: ZXGD3104N8TC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZXGD3104N8TC

Manufacturer:: Diodes Incorporated

Category:: Gate Drivers

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: ZXGD3104N8TC.pdf

Description:: IC GATE DRVR HI/LOW SIDE 8SO

Quantity:: RFQ Add To RFQ list

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Inventory:4,955

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Product details

Overview

ZXGD3104N8TC from Diodes Incorporated is a synchronous MOSFET controller in SO-8 package designed to replace Schottky diodes in flyback converters. It features -10 mV detector threshold, 15 ns turn-off propagation delay, and supports DCM/CrCM/CCM operation up to 250 kHz for ≥90W laptop adapters.

For engineers reviewing the ZXGD3104N8TC datasheet, ZXGD3104N8TC pinout, ZXGD3104N8TC application, or ZXGD3104N8TC equivalent, this device delivers proportional gate drive control with rapid zero-current turn-off, critical for high-efficiency synchronous rectification in offline AC-DC power supplies.

Technical Context

The ZXGD3104N8TC implements a differential amplifier-based detector that monitors MOSFET drain-source voltage to trigger gate drive. Its dual-output driver (GATEH sourcing 2.5 A, GATEL sinking 7 A) enables precise proportional control of gate voltage relative to V_DS, minimizing body diode conduction time.

It operates across 5–25 V V_CC, supports all major flyback conduction modes, and uses external R_REF/R_BIAS resistors to set detection threshold and bias current-ensuring stable operation at 19 V typical supply with 2.16 mA into REF and 3 mA into BIAS.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	5–25 V: Enables direct use with common auxiliary winding outputs without LDO regulation.
Detector Threshold	-10 mV (typ): Triggers gate turn-on precisely when body diode begins conduction, minimizing forward voltage loss.
Turn-Off Propagation Delay	15 ns: Ensures sub-20 ns response to zero-current crossing, critical for CrCM/CCM efficiency.
GATEH Peak Source Current	2.5 A: Drives low-R_DS(on) MOSFETs with Q_g(tot) = 124 nC within 480 ns rise time.
GATEL Peak Sink Current	7 A: Provides fast gate discharge to achieve 50 ns fall time and prevent reverse current flow.
Operating Frequency	Up to 250 kHz: Matches high-frequency flyback designs used in compact 90W+ laptop adapters.
Quiescent Current	5.16 mA: Minimizes no-load power loss while maintaining full detection sensitivity.

Pinout & Package

Package: SO-8, surface-mount, lead-free, RoHS-compliant molded plastic case with UL 94V-0 rating and moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
1 DNC	Do Not Connect	Must remain unconnected and floating; no internal connection or function.
2 REF	Reference Input	Sinks 2.16 mA to set detector threshold; requires external R_REF to V_CC.
3 GATEL	Gate Turn-Off Output	Sinks up to 7 A to rapidly discharge MOSFET gate and enforce zero-current turn-off.
4 GATEH	Gate Turn-On Output	Sources up to 2.5 A to drive MOSFET gate during body diode conduction phase.
5 V_CC	Power Supply	Accepts 5–25 V input; requires local 1 μF ceramic decoupling to handle peak gate currents.
6 GND	Ground Reference	System ground reference; must connect directly to MOSFET source terminal to minimize sensing error.
7 BIAS	Bias Input	Sinks 3 mA to stabilize internal circuitry; requires external R_BIAS to V_CC.
8 DRAIN	Drain Voltage Sense	Direct connection to MOSFET drain; senses V_DS for real-time proportional gate control.

Key Features

Feature	Design Value
Proportional Gate Drive Control	Gate output voltage scales linearly with MOSFET V_DS, maintaining optimal R_DS(on) conduction and minimizing body diode time.
Rapid Zero-Current Turn-Off	15 ns turn-off propagation delay + 20 ns turn-off time ensures MOSFET switches off precisely at I_D = 0, eliminating reverse recovery loss.
Multi-Mode Flyback Support	Validated for DCM, CrCM, and CCM operation-enables single-controller reuse across adapter power tiers and topology variants.
High-Voltage Drain Tolerance	Withstands -3 V to +180 V on DRAIN pin, supporting primary-side referenced synchronous rectification in universal-input offline converters.
Optimized Thermal Performance	159 °C/W junction-to-lead thermal resistance with 15 mm × 15 mm heatsinks enables >0.7 W continuous dissipation in compact SO-8 footprint.

Applications

Laptop Adapter Synchronous Rectification

USB-C PD Flyback Converter

Use Scenario: 19 V/4.74 A (90W) universal-input flyback adapter with 250 kHz switching frequency and CrCM operation.

IC Role / Device Role / Timing Role: Synchronous MOSFET controller replacing 40 V Schottky diode; detects body diode conduction and drives low-R_DS(on) MOSFET with proportional gate voltage.

Use Value: Reduces rectifier conduction loss by >60% versus Schottky, enabling >93% efficiency at full load without heatsink.

Use Scenario: 20 V/5 A USB-C Power Delivery adapter using QR flyback with variable frequency control.

IC Role / Device Role / Timing Role: Controls secondary-side MOSFET turn-on/turn-off timing synchronized to transformer reset, with adaptive gate drive scaling per load condition.

Use Value: Maintains tight output regulation across 0–100% load while suppressing EMI from body diode reverse recovery spikes.

Industrial AC-DC Power Supply

Medical Equipment Auxiliary PSU

Use Scenario: 24 V/3 A industrial control power supply operating in CCM with 100 kHz fixed frequency.

IC Role / Device Role / Timing Role: Drives 30 V MOSFET as ideal diode replacement; uses external R_REF/R_BIAS to maintain -10 mV threshold under wide temperature range (-40°C to +125°C).

Use Value: Eliminates thermal runaway risk from Schottky leakage at elevated ambient, improving long-term reliability in enclosed enclosures.

Use Scenario: 12 V/2 A isolated auxiliary supply for patient-monitoring equipment requiring low standby power and high creepage clearance.

IC Role / Device Role / Timing Role: Enables synchronous rectification with <5 mA quiescent current and SO-8 creepage-optimized layout per IEC 60601-1.

Use Value: Achieves <30 mW no-load consumption while meeting reinforced isolation requirements via PCB trace spacing and pin 1 DNC isolation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor NCP4303DR2G	Single-output driver (gate sink only); requires external turn-on path; -20 mV threshold; 35 ns turn-off delay.	Designed for cost-sensitive DCM-only adapters; lacks proportional drive and CrCM/CCM validation.	Select when gate drive complexity must be minimized and efficiency >92% is acceptable at light loads.
Vishay Si8239x Series	Isolated dual-channel gate driver IC; requires external sense resistor and comparator; 100 ns propagation delay.	Targets high-voltage isolated topologies (e.g., LLC resonant) where primary-side sensing is unsafe or impractical.	Choose only when galvanic isolation between controller and MOSFET is mandatory per safety standard.

Compared with NCP4303DR2G and Si8239x, the ZXGD3104N8TC uniquely integrates differential sensing, proportional drive, and sub-20 ns turn-off in a non-isolated SO-8 package-making it the only solution validated for CrCM/CCM 90W+ laptop adapters without external active components.

Availability

ZXGD3104N8TC is available at Aetrix Electronics and suitable for ≥90W laptop adapters, USB-C PD flyback converters, and industrial AC-DC power supplies requiring stable component supply, AEC-Q101 reliability, and RoHS-compliant packaging.

Supply support for ZXGD3104N8TC 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, specializing in high-efficiency power management and signal integrity solutions for consumer, industrial, and automotive markets.

The ZXGD3104 series targets high-frequency synchronous rectification in offline AC-DC converters, with design focus on minimizing body diode conduction loss and enabling compact, thermally efficient adapter designs.

FAQ

What is the recommended R_REF and R_BIAS for 12 V V_CC operation?

For 12 V V_CC, Diodes Incorporated specifies R_BIAS = 3.9 kΩ and R_REF = 5.1 kΩ to deliver 3 mA into BIAS and 2.16 mA into REF, ensuring the detector threshold remains at -10 mV across temperature and process variation.

Can ZXGD3104N8TC drive a 100 V MOSFET in a 230 VAC input flyback?

Yes-the DRAIN pin supports up to +180 V, making it compatible with 100 V MOSFETs in universal-input (85–265 VAC) flyback converters. Layout must maintain ≥4 mm creepage between DRAIN and GND per IEC 62368-1.

How does proportional gate drive improve efficiency over fixed-gate-drive controllers?

Proportional gate drive dynamically adjusts gate voltage based on instantaneous V_DS, keeping the MOSFET in its lowest R_DS(on) region during conduction while reducing gate charge during turn-off-cutting both conduction and switching losses simultaneously.

Is ZXGD3104N8TC qualified for automotive applications?

No-it is qualified to AEC-Q101 for high-reliability industrial use but lacks automotive-specific qualification (e.g., AEC-Q100 Grade 2 temperature range or PPAP documentation), and is not intended for safety-critical vehicle systems.

ZXGD3104N8TC Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

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 ~ 25V

Logic Voltage - VIL, VIH:: -

Current - Peak Output (Source, Sink):: 2.5A, 7A

Input Type:: Non-Inverting

High Side Voltage - Max (Bootstrap):: -

Rise / Fall Time (Typ):: 480ns, 50ns

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SO

ZXGD3104N8TC FAQ

1.How can I place an order for ZXGD3104N8TC through Aetrix?

Please submit a Request for Quotation (RFQ) for ZXGD3104N8TC 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 ZXGD3104N8TC reliable?

The price and inventory of ZXGD3104N8TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXGD3104N8TC is usually 5 days.

3.What payment methods are accepted for ZXGD3104N8TC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXGD3104N8TC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZXGD3104N8TC?

ZXGD3104N8TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZXGD3104N8TC 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 ZXGD3104N8TC?

For technical support, including ZXGD3104N8TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXGD3104N8TC requirements.

6.How does Aetrix verify that ZXGD3104N8TC is sourced from the original manufacturer or authorized distributors?

All ZXGD3104N8TC 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 ZXGD3104N8TC meets industry standards.

7.What is the process for return or replacement of ZXGD3104N8TC?

All ZXGD3104N8TC units undergo pre-shipment inspection (PSI). If there is an issue with ZXGD3104N8TC, 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 ZXGD3104N8TC part is unused and in its original packaging.

Return procedure for ZXGD3104N8TC:

1.Submit a request within 90 days.

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

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