Alpha & Omega Semiconductor Inc. AOD600A70R

Overview

AOD600A70R from Alpha & Omega Semiconductor is a 700 V, 34 A N-channel enhancement-mode MOSFET in TO-252 (DPAK) package, featuring 0.53 Ω typical R_DS(ON) at V_GS = 10 V, 15.5 nC total gate charge, and optimized dv/dt ruggedness for high-reliability flyback SMPS in PD adapters and lighting systems.

For engineers reviewing the AOD600A70R datasheet, pinout, applications, or equivalent options, key selection criteria include breakdown voltage margin (800 V max), UIS-tested avalanche robustness, body diode reverse recovery time (260 ns), and thermal resistance (R_θJC = 1.2 °C/W) for thermally constrained board-level designs.

Technical Context

The AOD600A70R employs proprietary aMOS5™ technology to achieve low conduction loss while maintaining fast switching with 20 ns turn-on delay and 8 ns rise time. Its enhanced body diode delivers 260 ns reverse recovery time and 3.5 mC Q_rr, enabling stable operation in discontinuous conduction mode (DCM) flyback converters without external snubbers.

Designed for high-voltage primary-side switching, it supports 100% UIS testing at I_AS = 0.8 A and L = 60 mH, and features 104 V/ns dv/dt immunity-critical for noise-sensitive AC-DC power supplies operating near EMI limits.

Key Specifications

Pinout & Package

Package: TO-252 (DPAK), surface-mount, single-drain tab, thermally enhanced plastic case with exposed drain pad on bottom side.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STP7NK80ZFP and IPP60R190C7, the AOD600A70R delivers superior R_DS(ON)/voltage trade-off and lower gate charge in a surface-mount TO-252 package-enabling smaller, cooler-running 65–100 kHz flyback converters for space-constrained consumer and industrial power supplies.

Availability

AOD600A70R is available at Aetrix Electronics and suitable for USB-C PD adapters, LED lighting drivers, and TV power supplies requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for AOD600A70R 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-efficiency MOSFETs, IGBTs, and power ICs for power conversion and motor control.

The AOD600A70R belongs to AOS' aMOS5™ high-voltage MOSFET product line, engineered specifically for high-density, high-efficiency flyback and resonant converters in consumer and industrial AC-DC power supplies.

FAQ

What is the maximum continuous drain current rating for AOD600A70R at 100°C case temperature?

The AOD600A70R supports 20 A continuous drain current at T_C = 100°C, as specified in the derating curve (Figure 10). This value reflects thermal limitation-not electrical capability-and assumes proper PCB copper area (1 in², 2 oz) and still-air conditions. At T_C = 25°C, the device handles 34 A continuously. Designers must verify actual board-level thermal performance using R_θJA = 55 °C/W and R_θJC = 1.2 °C/W values from the AOD600A70R datasheet.

Does AOD600A70R have avalanche capability, and is it tested?

Yes, the AOD600A70R is 100% unclamped inductive switching (UIS) tested per JEDEC JESD24-1. It is rated for repetitive avalanche energy (E_AS) of 19 mJ and single-pulse avalanche energy (E_AR) of 5 mJ at T_J = 25°C. These ratings are validated using L = 60 mH, I_AS = 0.8 A, and R_G = 25 Ω test conditions. The AOD600A70R's robust avalanche performance supports reliable operation during output short-circuit and startup transients in flyback converters.

What is the gate threshold voltage range for AOD600A70R, and how does it affect drive design?

The AOD600A70R has a gate threshold voltage (V_GS(th)) range of 3.4 V to 4.6 V at T_J = 25°C, with typical value of 4.0 V. This tight distribution ensures consistent turn-on behavior across temperature and manufacturing lots. To guarantee full enhancement, gate drive must exceed 10 V-matching the 0.53 Ω R_DS(ON) specification. Drive circuits should maintain >12 V headroom to accommodate drop across gate resistors and avoid partial turn-on during fast transients.

How does the body diode performance of AOD600A70R compare to standard MOSFETs in flyback applications?

The AOD600A70R features an enhanced body diode with 260 ns reverse recovery time (t_rr) and 3.5 mC reverse recovery charge (Q_rr) at I_F = 4 A, dI/dt = 100 A/μs. This is significantly faster and lower-charge than standard planar MOSFETs, reducing switching loss and EMI in DCM flyback operation. Unlike discrete diode solutions, the integrated body diode eliminates extra component count and layout complexity while maintaining robustness under repetitive reverse recovery stress.

Is AOD600A70R pin-compatible with AOI600A70R, and what are the mechanical differences?

No, AOD600A70R and AOI600A70R are not pin-compatible. AOD600A70R uses TO-252 (DPAK) with gull-wing surface-mount leads and exposed drain pad on the bottom; AOI600A70R uses TO-251A (IPAK) with straight leads and no exposed pad. While both share identical electrical specifications and belong to the same aMOS5™ family, their footprints, thermal paths, and assembly processes differ. PCB layout and reflow profiles must be independently qualified for each package type.