Alpha & Omega Semiconductor Inc. AOE6932

Overview

AOE6932 from Alpha & Omega Semiconductor is a 30V dual asymmetric N-channel MOSFET in DFN 5x6E package, integrating high-current Q1 (55A @ VGS=10V, RDS(ON) < 5mΩ) and ultra-low-RDS(ON) Q2 (85A @ VGS=10V, RDS(ON) < 1.4mΩ), optimized for synchronous rectification in high-efficiency DC/DC converters used in server VRMs and telecom POL modules.

For engineers reviewing the AOE6932 datasheet, pinout, applications, or equivalent options, this device requires attention to its bottom-source topology, asymmetric channel pairing, gate charge asymmetry (Qg(10V): 16–25nC / 65–100nC), and thermal derating curves for junction-to-case (RθJC = 5.2°C/W for Q1, 2.4°C/W for Q2).

Technical Context

The AOE6932 integrates two discrete N-channel MOSFETs with distinct electrical profiles: Q1 delivers robust current handling (ID = 55A) and moderate conduction loss, while Q2 provides ultra-low on-resistance (<1.4mΩ) and higher pulsed current capability (IDM = 36A), enabling optimized high-side/low-side or primary/secondary switching roles in synchronous buck topologies.

Its DFN 5x6E package features bottom-source terminals (S1/D2 and S2) for enhanced thermal performance and reduced parasitic inductance; both channels are 100% UIS tested and 100% Rg tested, supporting reliable operation under unclamped inductive switching stress and precise gate drive timing control.

Key Specifications

Pinout & Package

AOE6932 uses a thermally enhanced DFN 5x6E (5mm × 6mm, 0.75mm height) package with exposed drain paddle and bottom-source configuration - S2 and D1 are on the underside, requiring solder paste stencil optimization and thermal via placement beneath the package.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AON6932 and SiR872DP, the AOE6932 delivers superior thermal resistance (2.4°C/W Q2), guaranteed UIS ruggedness, and bottom-source layout advantages - making it the optimal choice for high-density, high-reliability DC/DC designs where thermal headroom and switching robustness are critical.

Availability

AOE6932 is available at Aetrix Electronics and suitable for server VRMs, telecom POL converters, and industrial motor drive gate drivers requiring stable component supply, full traceability, and lifecycle continuity assurance.

Supply support for AOE6932 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, industrial, and automotive markets.

The AOE6932 belongs to AOS's asymmetric dual-MOSFET product line, engineered specifically for space-constrained, high-efficiency synchronous buck converters where thermal performance and channel-specific optimization are essential.

FAQ

What is the maximum continuous drain current rating for each channel of the AOE6932?

The AOE6932 specifies ID = 55A for Q1 and 85A for Q2 at VGS = 10V and TC = 25°C. These ratings are package-limited and decrease with rising case temperature - at TC = 100°C, Q1 supports 35A and Q2 supports 65A per the datasheet's steady-state derating curves. The AOE6932 must be mounted on ≥1in² 2oz copper with thermal vias to achieve these values.

Does the AOE6932 support 4.5V gate drive for both channels?

Yes, the AOE6932 is fully characterized at VGS = 4.5V: Q1 RDS(ON) < 8mΩ and Q2 RDS(ON) < 1.8mΩ, enabling compatibility with 5V logic and certain 3.3V gate drivers with sufficient margin. However, Q2's gate threshold voltage (VGS(th) = 1.2–1.9V) requires careful layout to avoid unintended turn-on due to noise coupling into G2.

How is the pinout of the AOE6932 configured for half-bridge operation?

The AOE6932 pinout supports half-bridge use via internal node sharing: Pin 1 (D1) is Q1 drain; Pins 2–3 (S1/D2) form the common source-drain node; Pins 6–8 (D2/S1) serve as Q2 drain and Q1 source; S2 is the exposed bottom-source pad for Q2. This allows direct integration into buck converter layouts without external interconnects between high-side and low-side switches.

What thermal metrics define the AOE6932's cooling requirements?

The AOE6932 has asymmetric thermal characteristics: Q1 RθJC = 5.2°C/W and Q2 RθJC = 2.4°C/W, reflecting its bottom-source thermal design favoring Q2. Its RθJA is 65°C/W on 1in² FR-4 with 2oz copper. To maintain TJ ≤ 150°C at full load, the PCB must provide ≥40W thermal dissipation capacity for Q2 and ≥20W for Q1 under still-air conditions.

Is the AOE6932 qualified for automotive applications?

The AOE6932 is not AEC-Q101 qualified, though its -55°C to 150°C junction temperature range and 100% UIS testing support use in non-safety-critical automotive ADAS power rails. For production automotive systems requiring qualification, AOS offers the AOE6932-AQ variant - the standard AOE6932 should be validated per customer-specific reliability test plans before deployment.