Isolated Mosfet Driver

Our MOSFET Driver is a cutting-edge solution designed for seamless integration with your signal generator or control electronics, enhancing the functionality and range of your high-voltage experiments. The latest revision includes a much faster optocoupler, enabling significantly more precise signal timing compared to the previous generation, support for 3.3 V and 5 V logic-level input signals, as well as an upgraded maximum input voltage of 35 V. Key features include:

• Direct Connection to Signal Generators: Connect your signal generator directly to the gate driver using a standard BNC connector. This feature simplifies the setup process, allowing for straightforward integration into your existing systems.
   
• Updated High-Speed Optocoupler: The latest revision includes a significantly faster optocoupler, providing improved signal fidelity and much more precise timing control than the previous generation.
   
• Wide Logic-Level Compatibility: Supports 3.3 V and 5 V logic input signals, allowing direct connection to microcontrollers and other low-voltage digital control hardware without additional level shifting.
   
• Signal-Side Isolation: Optical isolation is provided between the input signal and the gate driver IC, ensuring clean logic separation.
   
• Versatile Power Supply Compatibility: The board supports 5 V to 35 V input. This voltage range also determines the output amplitude of the MOSFET driver, providing flexibility across a wide range of experimental setups.
   
• Impedance Matching Capability: Includes a switchable 50 Ω termination resistor on the input for impedance matching with signal generators, particularly beneficial for high-frequency operation.
   
• User-Replaceable Gate Driver IC: In the event of overload or failure, the gate driver IC can be easily replaced by the user, ensuring longevity and continuous operation of your projects.
   
• Flexible Application: You can use the MOSFET Driver in multiple ways:
  • Direct Drive for MOSFETs: Connect the outputs directly to the gate and source pins of a MOSFET for efficient control.
  • LED Control: Drive LEDs with high precision and speed; ideal for fast pulses with duration as low as 30 ns.
  • Tank Circuit Drive: Create a resonant tank circuit by placing a capacitor and inductor in series with the output, perfect for experiments involving resonance and high-frequency oscillations.

Input drive requirement: When the 50 Ω termination jumper is removed and the input is operated in high-impedance mode, the signal source must be capable of delivering a minimum of 6 mA at 3.3 V input level or 12 mA at 5 V input level to reliably drive the onboard optocoupler.

Note that the power input is not isolated from the output side. This means the driver shares a common ground with the output and cannot be used directly for high-side switching unless powered by a floating supply (e.g., battery or isolated DC-DC converter). If your application requires full isolation between both signal and power domains, consider using our MOSFET Switch Board, which offers full galvanic isolation and can be safely placed anywhere in a circuit regardless of ground potential.

Whether you're driving MOSFETs in complex circuits or experimenting with resonant tank circuits, this driver offers the precision, versatility, and reliability you need to explore the possibilities of modern electronics.

Technical Specification:

The datasheet with additional specifications for the onboard gate driver (IXDN614) can be found here.

(1) The specified maximum output current refers to peak output current only and must not be interpreted as continuous output current. Continuous output current is limited by package power dissipation and thermal conditions, and is typically in the range of 1–4 A, depending on factors such as switching frequency, duty cycle, ambient temperature and cooling. Please refer to the gate driver datasheet for detailed continuous current and power dissipation specifications.