STMicroelectronics STL45N60DM6

Overview

STL45N60DM6 from STMicroelectronics is a high-voltage N-channel Power MOSFET in the MDmesh DM6 series, featuring fast-recovery body diode, 600 V V_DS, 0.094 Ω typ. R_DS(on) at 10 V V_GS, and 25 A continuous drain current at T_C = 25 °C. It is engineered for ZVS phase-shift converters and high-efficiency bridge topologies requiring low Q_rr (0.48 µC), high dv/dt ruggedness (100 V/ns), and avalanche robustness (630 mJ E_AS).

For engineers reviewing the STL45N60DM6 datasheet, STL45N60DM6 pinout, STL45N60DM6 application, or STL45N60DM6 equivalent, key selection criteria include its 105 ns t_rr, 44 nC Q_g, 1920 pF C_iss, 0.78 °C/W R_thj-case, and PowerFLAT 8x8 HV package thermal performance in high-density power supplies.

Technical Context

This MOSFET employs ST's MDmesh DM6 silicon technology, integrating a Zener-protected gate and optimized cell layout to achieve both ultra-low R_DS(on) per area and fast-recovery diode characteristics. Its 100% avalanche-tested construction supports unclamped inductive switching with 6 A I_AR and 630 mJ E_AS.

The device delivers exceptional switching behavior via low C_oss,eq (310 pF), minimal Q_gd/Q_gs ratio (25 nC / 10 nC), and high dv/dt immunity (100 V/ns) under hard commutation. Its 1.5 Ω intrinsic gate resistance and 1000 A/µs di/dt capability enable stable operation in resonant and soft-switching topologies.

Key Specifications

Pinout & Package

STL45N60DM6 is housed in a thermally enhanced PowerFLAT 8x8 HV package with exposed drain pad for low-inductance, high-current PCB mounting. The package features 5 terminals: Drain (pin 5), Gate (pin 1), Driver Source (pin 2), and dual Power Source connections (pins 3 and 4) for reduced source inductance in high-frequency switching.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IXFH40N60X3 and IPP60R099C7, STL45N60DM6 uniquely combines Zener gate protection, 0.48 µC Q_rr, and PowerFLAT 8x8 HV's 0.78 °C/W thermal resistance-making it optimal for space-constrained, high-reliability ZVS converters where diode recovery loss and avalanche safety are critical.

Availability

STL45N60DM6 is available at Aetrix Electronics and suitable for industrial motor drives, server power supplies, solar microinverters, and EV on-board chargers requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for STL45N60DM6 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in power management, analog, MEMS, and microcontroller technologies for industrial, automotive, and consumer markets.

The STL45N60DM6 belongs to ST's MDmesh DM6 high-voltage MOSFET product line, designed specifically for high-efficiency, high-frequency resonant and soft-switching power converters demanding low Q_rr, high dv/dt immunity, and avalanche ruggedness.

FAQ

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

The STL45N60DM6 supports 16 A continuous drain current at T_C = 100 °C, as specified in Table 1 of DS11670 Rev 5. This derating reflects thermal limits imposed by the PowerFLAT 8x8 HV package's 0.78 °C/W R_thj-case and safe operating area constraints at elevated temperatures.

Does this MOSFET require an external gate resistor for stability?

Yes - while the device has 1.5 Ω intrinsic gate resistance, a 4.7 Ω external gate resistor is recommended per Figure 13 in DS11670 to dampen ringing and control dV/dt during switching. This value balances switching speed (t_d(on) = 15 ns) and EMI suppression in 300–500 kHz applications.

Can STL45N60DM6 replace STL45N60M6 in existing designs?

No - although both are 600 V, 25 A devices, the DM6 generation offers significantly lower Q_rr (0.48 µC vs 2.1 µC), faster t_rr (105 ns vs 250 ns), and improved R_DS(on) density. Direct replacement may cause overvoltage spikes or oscillation unless gate drive and snubber networks are re-optimized.

What is the safe operating area (SOA) limitation at 100 µs pulse width?

At t_p = 100 µs and T_C = 25 °C, the SOA limits ID to ~40 A at V_DS = 100 V (Figure 1, DS11670 Rev 5). Operation above this boundary risks thermal runaway or bond-wire fusing due to localized heating in the PowerFLAT 8x8 HV die attach structure.