STMicroelectronics EVALSTGAP1BS

Overview

EVALSTGAP1BS from STMicroelectronics is a galvanically isolated single-channel gate driver evaluation board for N-channel IGBTs and MOSFETs, featuring the STGAP1BS SO24W IC, 5 A sink/source drive capability, desaturation detection, and 2-level turn-off (2LTO) protection. It supports high-voltage operation up to 960 V rail and drives power switches rated up to 1500 V, including STGW30NC120HD (1200 V / 30 A TO-247 IGBT), in industrial motor drives and UPS systems.

For engineers reviewing the EVALSTGAP1BS datasheet, EVALSTGAP1BS pinout, EVALSTGAP1BS application, or EVALSTGAP1BS equivalent, this board enables rapid validation of isolated gate driving with SPI-configurable protection, daisy-chain diagnostics, negative gate driving, and thermal/fault LED indicators - critical for high-reliability power converter development.

Technical Context

The board implements true galvanic isolation between control logic and power stage via the STGAP1BS IC, supporting 3.3 V/5 V logic inputs and SPI daisy-chaining across multiple boards for half-bridge or interleaved topologies. It integrates active Miller clamping, UVLO on both VCC and VDD supplies, and overtemperature warning with automatic shutdown.

Power stage design accommodates TO-220 and TO-247 packages with heatsink mounting, enabling evaluation under high-power conditions. Fault signaling includes dedicated red LEDs for desaturation, overcurrent, and overtemperature events, directly tied to STGAP1BS status registers accessible via SPI.

Key Specifications

Availability

EVALSTGAP1BS is available at Aetrix Electronics and suitable for industrial motor drives, uninterruptible power supplies (UPS), and solar inverters requiring stable component supply, rapid prototyping validation, and SPI-configurable gate driver evaluation.

Supply support for EVALSTGAP1BS 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, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and analog/mixed-signal devices for automotive, industrial, and consumer applications.

The STGAP1B series targets high-reliability isolated gate driving in high-voltage power conversion, emphasizing configurable protection, diagnostic transparency, and interoperability with ST's ecosystem of evaluation tools and GUI software.

FAQ

What power switches can be evaluated with EVALSTGAP1BS?

The board supports N-channel IGBTs and MOSFETs in TO-220 and TO-247 packages rated up to 1500 V, including the STGW30NC120HD (1200 V / 30 A). Heatsink mounting is enabled for thermal validation under high-current operation, and jumper configurations allow adaptation to different gate drive voltage requirements.

How does the SPI daisy chain work on this board?

EVALSTGAP1BS implements SPI daisy chaining via dedicated SDO/SCLK/SDI pins and configuration jumpers (JP1–JP7), allowing multiple boards to share one master controller. Each STGAP1BS device exposes status registers and accepts protection parameter updates through a single SPI bus, reducing MCU pin count in multi-phase designs.

Does EVALSTGAP1BS provide negative gate driving?

Yes - the STGAP1BS IC integrated on the board provides true negative gate driving capability, enabling active Miller clamping and improved immunity against false turn-on during high dv/dt transients. This is implemented using internal charge pump circuitry and verified in the DB4582 data brief schematic and layout.

Can EVALSTGAP1BS be used without STEVAL-PCC009V2?

Yes - basic gate driving and protection functions operate standalone with discrete logic signals. However, full feature access - including SPI-based configuration, real-time diagnostics, and GUI integration - requires the STEVAL-PCC009V2 communication board and ST's official evaluation software as specified in the DB4582 documentation.