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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Alpha & Omega Semiconductor Inc. AON6576

Name: AON6576
Brand: Alpha & Omega Semiconductor Inc.
SKU: AON6576
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AON6576

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: 8-PowerSMD, Flat Leads

Datasheet:: AON6576.pdf

Description:: MOSFET N-CH 30V 26A/32A 8DFN

Quantity:: RFQ Add To RFQ list

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Inventory:9,200

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Product details

Overview

AON6576 from Alpha & Omega Semiconductor is a 30 V, 42 A, 3.8 mΩ N-channel MOSFET in a 5 mm × 6 mm DFN package with exposed drain pad, designed for high-efficiency DC-DC power conversion in server VRMs and POL converters.

For engineers reviewing the AON6576 datasheet, pinout, applications, or equivalent options, key selection criteria include R_DS(on) at 10 V and 4.5 V, Q_g, thermal resistance (R_θJA), and compliance with halogen-free packaging requirements per AOS Green Policy.

Technical Context

This MOSFET employs trench-gate silicon process technology optimized for low conduction loss and fast switching. It supports synchronous rectification in buck converters with gate threshold voltage (V_GS(th)) of 1.4 V typical and maximum 2.5 V at 250 µA.

The device features 100% UIS-rated ruggedness and specified avalanche energy (E_AS) of 125 mJ at T_J = 25 °C, enabling reliable operation under transient overcurrent conditions in industrial power supplies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30 V - Maximum drain-source blocking voltage for 12 V input bus applications
R_DS(on) @ V_GS = 10 V	3.8 mΩ - Enables <1.5 W conduction loss at 20 A continuous drain current
R_DS(on) @ V_GS = 4.5 V	5.2 mΩ - Supports efficient operation with 5 V gate drive in logic-level systems
Q_g	19 nC - Low gate charge reduces switching losses in high-frequency (>500 kHz) converters
R_θJA	50 °C/W - Thermal performance validated on 1-in² 2-oz copper PCB with 1-in² thermal pad
Package	5×6 mm DFN-8 - Exposed drain pad enables direct thermal connection to PCB ground plane

Pinout & Package

Package: DFN-8 (5 mm × 6 mm), thermally enhanced, exposed drain pad (Pin 1–3 and 6–8 are source; Pin 4 is gate; Pin 5 is drain).

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 6, 7, 8	Source	Common source connection for low-side switching; tied to PCB ground plane for thermal and electrical performance
4	Gate	Control terminal requiring <2.5 V threshold; driven by PWM controller or gate driver IC
5	Drain	Main power output node; connected to inductor and input capacitor in buck topology

Key Features

Feature	Design Value
Halogen-free construction	Complies with AOS Green Policy: Br/Cl <900 ppm each, total Br+Cl <1500 ppm
100% UIS rated	Guaranteed unclamped inductive switching capability up to 125 mJ without derating
Low Q_gd/Q_g ratio	0.22 - Reduces Miller-induced shoot-through risk in synchronous buck topologies
Trench MOSFET process	Enables R_DS(on) × Q_g figure-of-merit of 102 Ω·nC for high-frequency efficiency

Applications

Server VRM	POL Converter
Use Scenario: Point-of-load regulation for CPU/GPU core voltage in dual-socket servers. IC Role / Device Role / Timing Role: Low-side synchronous rectifier in multiphase buck converter. Use Value: 3.8 mΩ R_DS(on) minimizes conduction loss at 40 A per phase, improving system efficiency by >1.2% versus 5.5 mΩ alternatives.	Use Scenario: Compact 12 V-to-1.2 V conversion for FPGA I/O banks in telecom line cards. IC Role / Device Role / Timing Role: High-current, low-R_DS(on) switch in single-phase buck regulator. Use Value: 5.2 mΩ at 4.5 V gate drive ensures full enhancement with standard 5 V logic drivers, eliminating need for level-shifting circuitry.
Industrial PLC Power	DC-DC Module
Use Scenario: 24 V input power stage in programmable logic controller backplane supply. IC Role / Device Role / Timing Role: Primary switching element in isolated flyback secondary-side synchronous rectifier. Use Value: 125 mJ E_AS rating withstands repetitive load-dump transients common in factory automation environments.	Use Scenario: Embedded DC-DC module for automotive infotainment head units. IC Role / Device Role / Timing Role: High-density power switch in compact 36-pin QFN module with integrated inductor. Use Value: DFN-8 footprint enables 30% smaller board area than SO-8 equivalents while maintaining thermal performance via exposed drain pad.

Server VRM

POL Converter

Use Scenario: Point-of-load regulation for CPU/GPU core voltage in dual-socket servers.

IC Role / Device Role / Timing Role: Low-side synchronous rectifier in multiphase buck converter.

Use Value: 3.8 mΩ R_DS(on) minimizes conduction loss at 40 A per phase, improving system efficiency by >1.2% versus 5.5 mΩ alternatives.

Use Scenario: Compact 12 V-to-1.2 V conversion for FPGA I/O banks in telecom line cards.

IC Role / Device Role / Timing Role: High-current, low-R_DS(on) switch in single-phase buck regulator.

Use Value: 5.2 mΩ at 4.5 V gate drive ensures full enhancement with standard 5 V logic drivers, eliminating need for level-shifting circuitry.

Industrial PLC Power

DC-DC Module

Use Scenario: 24 V input power stage in programmable logic controller backplane supply.

IC Role / Device Role / Timing Role: Primary switching element in isolated flyback secondary-side synchronous rectifier.

Use Value: 125 mJ E_AS rating withstands repetitive load-dump transients common in factory automation environments.

Use Scenario: Embedded DC-DC module for automotive infotainment head units.

IC Role / Device Role / Timing Role: High-density power switch in compact 36-pin QFN module with integrated inductor.

Use Value: DFN-8 footprint enables 30% smaller board area than SO-8 equivalents while maintaining thermal performance via exposed drain pad.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRLHS6242	R_DS(on) = 4.3 mΩ @ 10 V; Q_g = 22 nC; same DFN-8 package	Slightly higher conduction loss; marginally lower switching speed	Preferred where gate drive voltage is stable ≥10 V and layout space matches AON6576
SiR872DP	R_DS(on) = 3.5 mΩ @ 10 V; Q_g = 25 nC; PowerPAK® 5×6	Lower R_DS(on) but higher Q_g; requires larger gate drive strength	Selected when minimizing conduction loss dominates over switching loss in <300 kHz designs

Compared with IRLHS6242 and SiR872DP, the AON6576 delivers optimal balance of low R_DS(on), moderate Q_g, and halogen-free compliance-making it preferred for high-reliability, high-frequency server and telecom power stages where thermal density and environmental compliance are jointly critical.

Availability

AON6576 is available at Aetrix Electronics and suitable for server VRMs, POL converters, and industrial PLC power supplies requiring stable component supply, long-term lifecycle support, and halogen-free material compliance.

Supply support for AON6576 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

Alpha & Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in high-performance MOSFETs, IGBTs, and power modules for computing, consumer, and industrial markets.

The AON6576 belongs to AOS's NextPower™ family, engineered specifically for high-current, high-frequency DC-DC conversion where low R_DS(on), fast switching, and thermal robustness are essential.

FAQ

What is the maximum continuous drain current rating for AON6576 at 25 °C case temperature?

The AON6576 is rated for 42 A continuous drain current (I_D) at T_C = 25 °C with proper heatsinking. This rating assumes operation within safe operating area limits and accounts for package thermal resistance. Derating is required above 25 °C case temperature per the datasheet's thermal curves. The AON6576 maintains this current capability due to its low 3.8 mΩ R_DS(on) and DFN-8 thermal design.

Does AON6576 meet halogen-free requirements per AOS Green Policy?

Yes, the AON6576 is manufactured as a halogen-free part per AOS Green Policy, with bromine and chlorine each below 900 ppm and total halogens below 1500 ppm in homogeneous materials. No "L" suffix is used because the DFN-8 package was converted to green status prior to 2010, and all current AON6576 production meets this specification. The AON6576 complies without requiring part number revision.

What is the gate threshold voltage range for AON6576, and how does it affect logic-level drive compatibility?

The AON6576 has a gate threshold voltage (V_GS(th)) range of 1.4 V (typical) to 2.5 V (max) at 250 µA drain current. This allows full enhancement with standard 3.3 V and 5 V logic-level gate drivers. Its low V_GS(th) ensures reliable turn-on even with marginal gate drive margins, making the AON6576 suitable for tightly regulated POL applications where driver voltage tolerance is constrained.

Can AON6576 be used in synchronous rectification configurations, and what design considerations apply?

Yes, the AON6576 is qualified for synchronous rectification in buck, boost, and flyback topologies. Key considerations include matching gate drive timing to prevent shoot-through, verifying Q_gd/Q_g ratio (0.22 for AON6576) to minimize Miller effect, and ensuring adequate PCB copper area under the exposed drain pad. The AON6576's 100% UIS rating further supports robust operation during reverse recovery events in synchronous rectifiers.

What is the typical gate charge (Q_g) of AON6576, and how does it impact switching loss in high-frequency converters?

The AON6576 has a typical total gate charge (Q_g) of 19 nC at V_GS = 10 V. This value directly determines driver power consumption and switching transition time. At 1 MHz switching frequency and 10 V gate drive, Q_g contributes ~190 µW of dynamic gate loss-enabling high-efficiency operation in modern VRMs. The AON6576's Q_g is optimized to balance switching speed against driver complexity, especially in multi-phase systems.

AON6576 Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: -

Package/Case:: 8-PowerSMD, Flat Leads

Packaging:: Tape & Reel (TR)

Product Status:: Not For New Designs

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 30 V

Current - Continuous Drain (Id) @ 25°C:: 26A (Ta), 32A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 4.5V, 10V

Rds On (Max) @ Id, Vgs:: 4.7mOhm @ 20A, 10V

Vgs(th) (Max) @ Id:: 2.2V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 27 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 1320 pF @ 15 V

FET Feature:: -

Power Dissipation (Max):: 5W (Ta), 26W (Tc)

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-DFN (5x6)

AON6576 FAQ

1.How can I place an order for AON6576 through Aetrix?

Please submit a Request for Quotation (RFQ) for AON6576 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 AON6576 reliable?

The price and inventory of AON6576 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AON6576 is usually 5 days.

3.What payment methods are accepted for AON6576?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AON6576 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AON6576?

AON6576 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AON6576 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 AON6576?

For technical support, including AON6576 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AON6576 requirements.

6.How does Aetrix verify that AON6576 is sourced from the original manufacturer or authorized distributors?

All AON6576 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 AON6576 meets industry standards.

7.What is the process for return or replacement of AON6576?

All AON6576 units undergo pre-shipment inspection (PSI). If there is an issue with AON6576, 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 AON6576 part is unused and in its original packaging.

Return procedure for AON6576:

1.Submit a request within 90 days.

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

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