STMicroelectronics EVALSTGAP4S User Manual

Evaluation board for STGAP4S advanced galvanically isolated gate driver
Introduction
The STGAP4S is a galvanically isolated single gate driver for IGBTs and SiC MOSFETs with advanced protection, configuration,
and diagnostic features. The architecture of the STGAP4S isolates the channel gate driving from the control and from the low
voltage interface circuitry through true galvanic isolation. The unique output architecture is designed to allow the use of an
external MOSFET push-pull stage giving flexibility in terms of current capability dimensioning and easing the use of several
power switches in parallel. The 2 pre-driver outputs are characterized by current capability and output voltage swing optimized
for that topology and allow the use of a negative gate driving supply.
The EVALSTGAP4S board allows to evaluate all the STGAP4S features. The board is equipped with two STGAP4S drivers
connected in an SPI daisy chain and with each high voltage side fed by its own flyback power supply, whose controller is
integrated in the driver itself. Each STGAP4S drives the gate of an SiC MOSFET in H2PAK-7 package having 650 V voltage
rating and connected in half-bridge.
Multiple EVALSTGAP4S boards can be connected together allowing the implementation of an SPI daisy chain with more than
two devices and also the evaluation of more complex topologies, as a full bridge inverter.
The use in combination with the STEVAL-PCC009V2 communication board allows the easy configuration of all the driver's
protection and control features, through the SPI interface, as well as access to the driver's status registers, offering an
advanced diagnostic. The board can be used also in standalone mode without a communication board using the default device
configuration at power-on.
UM3153 - Rev 1 - May 2023
For further information contact your local STMicroelectronics sales office.
UM3153
User manual
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