Alpha & Omega Semiconductor Inc. AON6514

Overview

AON6514 from Alpha & Omega Semiconductor is a 30V N-channel Trench Power AlphaMOS (αMOS LV) discrete MOSFET optimized for high-efficiency DC/DC conversion. It delivers 30A continuous drain current at V_GS=10V, <5mΩ R_DS(on) at 10V, and <8.5mΩ at 4.5V, with low gate charge (Q_g=22.5nC max) and 100% UIS-tested ruggedness for POL and isolated telecom converters.

For engineers reviewing the AON6514 datasheet, pinout, applications, or equivalent options, key selection criteria include its DFN5x6 package thermal performance (R_θJC=5°C/W), body-diode recovery characteristics (t_rr=10.2ns, Q_rr=13.6nC), and gate-threshold voltage range (1.2–2.2V) for reliable 3.3V/5V drive compatibility.

Technical Context

The AON6514 employs Alpha & Omega's latest αMOS LV trench technology to achieve ultra-low on-resistance at low gate voltages-critical for synchronous buck stages in server VRMs and point-of-load regulators. Its 100% unclamped inductive switching (UIS) and gate-charge testing ensure robustness under transient overcurrent and fast-switching conditions.

Thermal design is enabled by the DFN5x6 package's low junction-to-case resistance (5°C/W) and validated SOA curves up to 10ms pulses. The device supports high-frequency operation via low C_iss (951pF), C_oss (373pF), and Cr_ss (62pF), with turn-on delay of 6.25ns and rise time of 2.5ns under standard test conditions.

Key Specifications

Pinout & Package

Package: DFN5x6 (dual-side cooling, exposed drain pad). Pin 1 = Gate, Pin 2 = Source, Pin 3 = Source, Pin 4 = Source, Pin 5 = Drain, Pin 6 = Drain, Pin 7 = Drain, Pin 8 = Drain (top view per datasheet page 1).

Key Features

Applications

Equivalent & Alternatives

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

Compared with IPP040N04L and SiR872DP, the AON6514 offers the lowest combined R_DS(on) × Q_g figure-of-merit (112.5 mΩ·nC) and verified UIS ruggedness - making it optimal for high-reliability, high-frequency POL and telecom isolation stages where both efficiency and transient robustness are non-negotiable.

Availability

AON6514 is available at Aetrix Electronics and suitable for server VRMs, telecom isolated DC/DC converters, and industrial point-of-load regulators requiring stable component supply, consistent parametric performance across production lots, and long-term lifecycle support.

Supply support for AON6514 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 ICs for computing, consumer, and industrial markets.

The AON6514 belongs to AOS's αMOS LV (Low Voltage) family, engineered specifically for high-current, high-frequency DC/DC conversion where low R_DS(on) at logic-level gate drive and rugged UIS performance are essential.

FAQ

What is the maximum continuous drain current rating for the AON6514 at 100°C case temperature?

The AON6514 supports 12A continuous drain current at T_C=100°C, as specified in the Absolute Maximum Ratings table (page 1 of datasheet). This derating reflects thermal limits of the DFN5x6 package and assumes proper PCB copper area for heat spreading. At 25°C case temperature, the rating rises to 30A - confirming its suitability for thermally constrained POL applications where the AON6514 delivers high current density in minimal footprint.

Does the AON6514 support 3.3V gate drive in practical applications?

Yes, the AON6514 is fully compatible with 3.3V gate drive due to its guaranteed gate-threshold voltage range of 1.2–2.2V and R_DS(on) <8.5mΩ at V_GS=4.5V. In practice, this ensures strong enhancement and low conduction loss even with marginal 3.3V logic drivers. The AON6514 datasheet confirms stable operation down to 4.5V, and typical transfer curves (Figure 2) show usable transconductance starting below 3V - making the AON6514 a robust choice for 3.3V-controlled synchronous rectifiers.

What is the significance of 100% UIS testing for the AON6514?

100% UIS (Unclamped Inductive Switching) testing certifies that every AON6514 unit can withstand single-pulse avalanche energy up to 2.6mJ without degradation. This is critical in hard-switched topologies like flyback or active-clamp forward converters, where voltage spikes exceed V_DS rating during turn-off. Unlike statistical sampling, 100% testing ensures field reliability - a key differentiator of the AON6514 versus generic MOSFETs where UIS capability is only typical or unspecified.

How does the AON6514's body-diode performance compare to standard MOSFETs?

The AON6514 features a fast, low-loss body diode with t_rr=10.2ns and Q_rr=13.6nC at I_F=20A, dI/dt=500A/µs - significantly faster than standard trench MOSFETs (typically >20ns t_rr). This reduces reverse-recovery losses and cross-conduction risk in synchronous rectification. The AON6514's V_SD=0.7–1.0V also lowers forward conduction loss during dead-time, directly improving efficiency in high-frequency DC/DC stages where the AON6514 is commonly deployed.

Is the AON6514 suitable for automotive AEC-Q101 qualified applications?

No, the AON6514 is not AEC-Q101 qualified. The datasheet explicitly states it was "designed and qualified for the consumer market" and prohibits use in life-support or safety-critical automotive systems. While its electrical specs (30V rating, 150°C T_J) align with some automotive requirements, absence of AEC-Q101 stress testing, PPAP documentation, and automotive-grade traceability means the AON6514 cannot be used in ADAS or powertrain systems - though it remains valid for non-safety automotive infotainment or body-control modules where qualification is not mandated.