APT17F100S

Product Overview

The APT17F100S from Microchip Technology (originally from Advanced Power Technology, now a Microchip company) is a high-performance N-channel power MOSFET designed specifically for high-speed switching applications. It belongs to the family of ultra-fast recovery MOSFETs tailored for use in high-efficiency power conversion systems such as switch-mode power supplies (SMPS), motor drives, inverters, and high-frequency welders. This device combines low conduction losses with high-speed switching performance, making it suitable for demanding applications where both efficiency and thermal performance are critical.

Key Features

* Ultra-low on-resistance for reduced conduction losses
* Fast switching speed to minimize switching losses
* High voltage capability (1000V), ideal for high-power circuits
* Low input capacitance and gate charge for improved driveability
* Isolated package (TO-247 with full electrical isolation) for ease of mounting and enhanced safety
* Avalanche energy rated, ensuring robustness under inductive load switching

Electrical Specifications

* Drain-to-Source Voltage (V_DSS): 1000 V
* Continuous Drain Current (I_D) @ T_C = 25°C: 17 A
* Pulsed Drain Current (I_D (pulse)): >68 A (limited by package)
* Gate-to-Source Voltage (V_GS): ±30 V
* R_DS(on) (max) @ V_GS = 10V: 0.65 Ω
* Total Gate Charge (Q_g): ~100 nC typical
* Input Capacitance (C_iss): ~2500 pF typical
* Turn-on Delay Time (t_d(on)): ~30 ns
* Rise Time (t_r): ~80 ns
* Turn-off Delay Time (t_d(off)): ~120 ns
* Fall Time (t_f): ~60 ns
* Maximum Power Dissipation (P_D) @ T_C = 25°C: 250 W
* Thermal Resistance, Junction to Case (R_θJC): 0.5 °C/W

Mechanical and Packaging Information

* Package Type: ISOTOP (Fully Isolated TO-247)
* Mounting Style: Through-hole
* Isolation Voltage: 2500 V RMS (between terminals and mounting base)
* Lead-Free / RoHS Compliant: Yes
* Case Style: Rectangular, molded, with integrated ceramic insulator

Applications

* High-frequency welders
* Induction heating systems
* Class D and Class E RF amplifiers
* DC-DC converters for industrial and telecom power supplies
* Inverters and motor control circuits
* Resonant-mode power converters
* Uninterruptible Power Supplies (UPS)

Advantages

The APT17F100S offers a unique blend of high voltage handling capability and fast switching speed, making it particularly effective in circuits that require both voltage endurance and minimal switching losses. The ISOTOP package provides full electrical insulation, eliminating the need for external insulators and simplifying thermal management. Furthermore, the rugged avalanche energy rating and high pulsed current tolerance make it suitable for harsh and transient-heavy environments.

Thermal and Reliability Considerations

The low thermal resistance from junction to case (0.5 °C/W) combined with the high power dissipation capability allows the APT17F100S to be used in thermally challenging designs with proper heatsinking. The isolated package minimizes thermal stress and provides added protection for system components.

Conclusion

Microchip’s APT17F100S is a reliable, high-performance power MOSFET optimized for high-speed, high-voltage, and high-efficiency applications. It is well-suited for use in modern power conversion and control systems that demand robust operation and efficient energy handling. The device's electrical and thermal characteristics make it a preferred choice for engineers looking for a balance between performance, reliability, and ease of integration.