STMicroelectronics EVALSTGAP2DM

Overview

EVALSTGAP2DM from STMicroelectronics is a demonstration board for the STGAP2DM galvanically isolated half-bridge gate driver IC, supporting up to 1700 V high-voltage rail operation, 4 A source/sink drive current, and 80 ns propagation delay. It integrates onboard isolated DC-DC converters (fed by 5 V VAUX), configurable gate drive voltages (+15/0 V, +15/−3 V, +19/0 V, +19/−3 V), and supports TO-220/TO-247 power switch footprints for industrial motor drives using IGBTs, SiC, or MOSFETs.

For engineers reviewing the EVALSTGAP2DM datasheet, EVALSTGAP2DM pinout, EVALSTGAP2DM application, or EVALSTGAP2DM equivalent, this board enables rapid evaluation of interlocking, UVLO, thermal shutdown, negative gate driving, and dual isolated supply generation under real high-voltage half-bridge switching conditions.

Technical Context

The EVALSTGAP2DM implements the STGAP2DM's dual-channel isolated gate driving architecture with independent high-side (VH_A/GOUT_A/GNDISO_A) and low-side (VH_B/GOUT_B/GNDISO_B) sections. It provides dedicated SD (shutdown) and BRAKE pins, TTL/CMOS-compatible 3.3 V/5 V inputs with hysteresis, and on-board voltage regulation including 3.3 V VDD logic supply generation.

Board-level isolation is achieved via two Murata MGJ2D052005SC DC-DC converters supplying ±15 V or ±19 V gate drive rails, while input logic signals are referenced to system GND and isolated power domains are referenced to GNDISO_A/GNDISO_B. Temperature shutdown and interlock logic prevent simultaneous high outputs.

Key Specifications

Availability

EVALSTGAP2DM is available at Aetrix Electronics and suitable for industrial motor control, renewable energy inverters, and high-voltage power conversion systems requiring stable component supply during prototyping and pre-production validation phases.

Supply support for EVALSTGAP2DM 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 ICs, sensors, and analog/mixed-signal devices for automotive, industrial, and consumer applications.

The EVALSTGAP2DM belongs to ST's "Evaluation Boards for Power Drivers" product line, developed specifically to accelerate design-in of isolated gate drivers in high-reliability, high-voltage power stages.

FAQ

What power switches can be evaluated with the EVALSTGAP2DM?

The board supports TO-220 and TO-247 packaged power devices, including silicon IGBTs, SiC MOSFETs, and high-voltage superjunction MOSFETs rated up to 1700 V. Its configurable gate drive voltages (+15/−3 V, +19/−3 V) allow optimization for threshold and Miller plateau characteristics across these technologies.

Does the EVALSTGAP2DM provide isolated logic-level inputs?

No - the INA, INB, SD, and BRAKE inputs are referenced to system GND and require external level-shifting or isolated signal conditioning when interfacing with microcontrollers in floating domains. The board itself does not include digital isolators on the input side.

How is the 3.3 V logic supply generated?

A dedicated linear regulator (U3, 3V3_REG) generates 3.3 V from the VAUX 5 V supply. This rail powers the internal logic of the STGAP2DM and is also available at test point TP6. An external 5 V supply may alternatively be used if onboard regulation is bypassed via JP12 configuration.

Can the EVALSTGAP2DM drive both high-side and low-side switches simultaneously?

No - the interlocking function prevents simultaneous high output on GOUT_A and GOUT_B. This hardware-level safety feature is implemented within the STGAP2DM IC and enforced on the board via internal logic, eliminating risk of shoot-through during dead-time transitions.