FTM Board Club
Demonstration board for STGAP2SICS isolated 4 A single gate drive

The STGAP2SiCS is an isolated single gate driver.

The gate driver is characterized by 4 A current capability and rail-to-rail outputs, making the device also suitable for high power inverter applications such as motor drivers in industrial applications equipped with SiC power switches.

The separate source and sink outputs allow independent turn-on and turn-off optimization through dedicated gate resistors.

The device integrates protection functions: UVLO and thermal shut down are included to easily design highly reliable systems. Dual input pins allow choosing the control signal polarity and also implementing HW interlocking protection in order to avoid cross-conduction in case of controller malfunction.

The device allows implementing negative gate driving, and the on board isolated DC-DC converters allows working with optimized driving voltage for SiC.

The EVALSTGAP2SiCS board allows evaluation of all the STGAP2SiCS features while driving a half-bridge power stage with voltage rating up to 1200 V in TO-220 or TO-247 packages.

The board components are easy to access and modify in order to make driver performance evaluation easier under different application conditions and fine adjustment of final application components.

  • Board
    • High voltage rail up to 1200 V
    • Negative gate driving
    • Onboard isolated DC-DC converters to supply high-side and low-side gate drivers, fed by VAUX = 5 V, with 5.2 kV maximum isolation
    • 3.3 V VDD logic supply generated onboard or 5 V (externally applied)
    • Easy jumper selection of driving voltage configuration: +17/0 V; +17/-3 V; +19/0 V; +19/-3 V
  • Device
    • Driver current capability: 4 A source/sink @ 25 C
    • Separate sink and source for easy gate driving configuration
    • 6000 V Galvanic isolation
    • Short propagation delay: 75 ns
    • UVLO function
    • Gate driving voltage up to 26 V
    • 3.3 V, 5 V TTL/CMOS inputs with hysteresis
    • Temperature shut down protection
    • Stand-by function