STMicroelectronics EVALSTGAP1S

Overview

EVALSTGAP1S from STMicroelectronics is a demonstration board for the STGAP1S galvanically isolated single-channel gate driver, designed to evaluate high-voltage IGBT/MOSFET driving up to 1500 V with 5 A sink/source capability, active Miller clamp, desaturation detection, and SPI-configurable protection features in industrial motor drives and power converters.

For engineers reviewing the EVALSTGAP1S datasheet, EVALSTGAP1S pinout, EVALSTGAP1S application, or EVALSTGAP1S equivalent, this board enables full functional validation of STGAP1S's 2-level turn-off, UVLO on dual supplies, overtemperature shutdown, negative gate drive, and daisy-chain SPI diagnostics-critical for high-reliability isolated gate driver integration.

Technical Context

The EVALSTGAP1S implements true galvanic isolation between control logic (3.3/5 V interface) and high-side power stage, supporting TO-220 and TO-247 power switch footprints with heatsink mounting. It integrates dedicated desaturation sensing circuitry, current-sense resistors (0.2 Ω, 2 W), and fault LED indicators tied directly to STGAP1S status registers.

SPI daisy-chaining enables synchronized configuration and real-time diagnostic readback across multiple boards, while the board's optimized layout maintains creepage/clearance for 1500 V working voltage and supports half-bridge or interleaved topology evaluation when combined with STEVAL-PCC009V2.

Key Specifications

Availability

EVALSTGAP1S is available at Aetrix Electronics and suitable for industrial motor drives, solar inverters, UPS systems, and EV charging infrastructure requiring stable component supply and validated gate driver evaluation platforms.

Supply support for EVALSTGAP1S 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, designing and manufacturing microcontrollers, power management ICs, sensors, and analog/mixed-signal devices for automotive, industrial, and consumer applications.

EVALSTGAP1S belongs to ST's gapDRIVE™ evaluation platform family, engineered to accelerate development of robust, isolated gate driver solutions for high-voltage power conversion systems with integrated diagnostics and programmable protection.

FAQ

Does EVALSTGAP1S support both IGBTs and MOSFETs?

Yes. The board is configured for N-channel IGBTs and MOSFETs, as confirmed by its use of STGW30NC120HD (1200 V, 30 A IGBT) in the BOM and support for negative gate drive, Miller clamp, and desaturation detection-features essential for IGBT operation and also applicable to high-side MOSFETs in hard-switching topologies.

Is an external communication board required to configure EVALSTGAP1S?

Yes. Full SPI-based configuration and diagnostics require the STEVAL-PCC009V2 communication board and ST's gapDRIVE™ evaluation GUI software. The EVALSTGAP1S board itself provides only the physical interface and signal routing; no onboard USB or UART bridge is included.

Can multiple EVALSTGAP1S boards be synchronized?

Yes. The board implements SPI daisy-chain capability via dedicated SDI/SDO pins and jumpers (JP1–JP7), allowing up to eight boards to share one SPI bus and logic supply. This enables coordinated evaluation of half-bridge, three-phase, or interleaved converter topologies without external multiplexing.

What thermal management provisions does the board include?

The board features a large copper pour and mounting holes aligned with TO-220/TO-247 footprints to accept standard heatsinks. Thermal design accommodates STGAP1S's ability to drive high-power switches continuously, with 0.2 Ω, 2 W current-sense resistors placed for minimal thermal coupling and accurate desaturation monitoring.