Alpha & Omega Semiconductor Inc. AOB190A60CL

Overview

AOB190A60CL from Alpha & Omega Semiconductor is a 600 V, 80 A, N-channel enhancement-mode MOSFET in TO-220F Green package, featuring R_DS(ON) ≤ 0.19 Ω at V_GS = 10 V, 34 nC total gate charge, and 100% UIS-tested ruggedness-designed for high-efficiency SMPS with PFC, LLC, and flyback topologies in silver ATX, TV, lighting, and telecom power supplies.

For engineers reviewing the AOB190A60CL datasheet, pinout, applications, or equivalent options, key selection criteria include its 700 V V_DS rating, 0.6 °C/W R_θJC, 341 ns body diode reverse recovery time, 4.3 mJ E_oss at 400 V, and TO-220F thermal performance under continuous conduction mode operation.

Technical Context

The AOB190A60CL employs proprietary aMOS5™ technology to achieve low R_DS(ON) and optimized switching parameters-including 8.5 nC Q_gd, 70 ns t_r, and 20 ns t_f-for improved EMI performance in hard-switched converters. Its enhanced body diode delivers 341 ns t_rr and 6.8 mC Q_rr at I_F = 10 A, dI/dt = 100 A/μs, supporting robust synchronous rectification and ZVS transitions.

Thermally, it features R_θJC = 0.6 °C/W and R_θCS = 0.5 °C/W, enabling high-power density designs when mounted on heatsinks. Absolute maximum ratings include 700 V V_DS, ±30 V V_GS, and T_J = –55 to +150 °C, with 100% R_g and UIS testing ensuring production reliability.

Key Specifications

Pinout & Package

AOB190A60CL is housed in a TO-220F Green package with isolated tab (non-conductive mounting surface), designed for direct heatsink attachment without insulating pads. The package meets RoHS and green material requirements per AOS specification Rev 4.1 (April 2024).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STP10NK60ZFP and IXFH30N60P, AOB190A60CL delivers 8× higher current capability than the former and 2.7× lower R_DS(ON) than the latter-enabling single-device solutions in 300–600 W PFC+LLC platforms while maintaining superior EMI behavior and thermal efficiency.

Availability

AOB190A60CL is available at Aetrix Electronics and suitable for server power supplies, LED drivers, telecom rectifiers, and ATX power supplies requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for AOB190A60CL 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 telecom markets.

The AOB190A60CL belongs to AOS's aMOS5™ 600 V N-channel MOSFET product line, engineered specifically for high-efficiency, high-frequency switched-mode power supplies demanding low conduction and switching losses.

FAQ

What is the maximum junction temperature rating for the AOB190A60CL?

The AOB190A60CL has a maximum junction temperature (T_J) rating of +150 °C, validated across all operating conditions including repetitive avalanche and UIS events. This rating is used to define its safe operating area (SOA), thermal derating curves, and continuous power dissipation limits-ensuring reliable operation in high-ambient environments like enclosed server PSUs and sealed LED fixtures.

Does the AOB190A60CL have an isolated tab, and what is its mounting requirement?

Yes, the AOB190A60CL uses a TO-220F Green package with an electrically isolated tab, meaning the drain metallization is insulated from the heatsink mounting surface. No insulating pad or washer is required-direct metal-to-metal contact with the heatsink is permitted, simplifying thermal design and reducing thermal resistance by eliminating interfacial layers in compact AC/DC adapters.

What is the gate threshold voltage range for the AOB190A60CL, and how does it affect drive circuit design?

The AOB190A60CL has a gate threshold voltage (V_GS(th)) range of 3.2 V to 4.6 V at T_J = 25 °C. This tight distribution ensures consistent turn-on behavior across temperature and production lots. Drive circuits must supply ≥10 V to fully enhance the device and achieve rated R_DS(ON); gate drivers with 12–15 V output are recommended to maintain noise margin and avoid partial turn-on in noisy SMPS environments.

How is the AOB190A60CL qualified for avalanche energy handling?

The AOB190A60CL is 100% tested for unclamped inductive switching (UIS) per JEDEC JESD24-11, with absolute maximum rating of I_AS = 2.7 A, L = 60 mH, V_DD = 150 V, R_G = 25 Ω at T_J = 25 °C. This qualification ensures robustness against transformer leakage inductance spikes and transient overloads in flyback and forward converters without external clamping.

What is the typical body diode forward voltage of the AOB190A60CL, and why does it matter in flyback designs?

The AOB190A60CL exhibits a typical body diode forward voltage (V_SD) of 0.85 V at I_S = 10 A and T_J = 25 °C, rising to ~1.2 V at 125 °C. In flyback converters operating in DCM, this low V_SD minimizes conduction loss during the diode conduction phase-especially critical in high-duty-cycle, universal-input designs where body diode conduction time increases significantly.