STMicroelectronics STGAP2SICSANCTR

Overview

STGAP2SICSANCTR from STMicroelectronics is a galvanically isolated 4 A single-channel SiC MOSFET gate driver in narrow-body SO-8 package, featuring 4.8 kVPK isolation, 100 V/ns CMTI, 45 ns propagation delay, rail-to-rail output, and dedicated Miller clamp pin - designed for high-reliability 1200 V inverter stages in industrial motor drives and UPS systems.

For engineers reviewing the STGAP2SICSANCTR datasheet, STGAP2SICSANCTR pinout, STGAP2SICSANCTR application, or STGAP2SICSANCTR equivalent, key selection criteria include SiC-optimized UVLO thresholds (14.5–16.4 V turn-on), dual active-low/active-high logic inputs with hysteresis, thermal shutdown at 170 °C, standby mode reducing quiescent current to 40 µA (VDD) / 400 µA (VH), and safe-state behavior during power-up/down.

Technical Context

This driver implements unipolar or bipolar gate driving via separate VH (up to 26 V) and VDD (3.1–5.25 V) supplies, with integrated level-shifting isolation barrier enabling independent control of high-side SiC switches. Its dual-input architecture supports hardware interlocking to prevent cross-conduction in half-bridge topologies.

The device integrates three protection layers: VH-supply UVLO with 0.75 V hysteresis, junction temperature shutdown at 170 °C with 20 °C hysteresis, and watchdog monitoring of LV-side communication loss - all forcing GOUT low and CLAMP active in "safe state" regardless of input status during fault conditions.

Key Specifications

Pinout & Package

Narrow-body SO-8 package (4.8 × 6.0 mm, 1.27 mm pitch) with reinforced creepage/clearance (4 mm) and ECOPACK2 RoHS-compliant molding.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar SiC gate driver applications.

Compared with Si8273ACD-IS, STGAP2SICSANCTR delivers integrated Miller clamping and tighter SiC-optimized UVLO, reducing component count and layout risk. Against UCC5870QDWJRQ1, it trades DESAT capability for smaller footprint, lower cost, and lower quiescent current - ideal for cost-sensitive, space-constrained industrial inverters.

Availability

STGAP2SICSANCTR is available at Aetrix Electronics and suitable for industrial motor drives, uninterruptible power supplies, induction heating systems, and battery charging inverters requiring stable component supply across multi-year production cycles.

Supply support for STGAP2SICSANCTR 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 devices for automotive, industrial, and consumer markets.

STGAP2SICSANCTR belongs to ST's STGAP family of isolated gate drivers - engineered specifically for wide-bandgap power devices, emphasizing SiC-optimized protection, compact isolation, and robustness in harsh industrial environments.

FAQ

What is the purpose of the CLAMP pin, and how does it interface with the SiC MOSFET gate?

The CLAMP pin provides an active Miller clamp function: when the external SiC MOSFET gate voltage drops below 1.3–2.6 V during turn-off, the internal clamp switch activates, creating a low-impedance path from gate to GNDISO. This shunts Miller current away from the gate driver output, preventing unintended turn-on caused by high dv/dt across the drain-gate capacitance in half-bridge configurations.

How does the standby mode operate, and what is its impact on system power consumption?

Standby mode is entered by holding both IN+ and IN− high for >200 µs, reducing VDD quiescent current to 40–65 µA and VH current to 400–700 µA. During standby, GOUT is held low and CLAMP is active - maintaining safe state while cutting total idle power by >90% versus normal operation, critical for energy-efficient standby in UPS and chargers.

Can STGAP2SICSANCTR drive both unipolar and bipolar gate voltages, and what external components are required?

Yes - unipolar operation uses VH = +15–20 V and GNDISO as reference; bipolar operation adds VL = –5 V referenced to GNDISO, requiring a negative bias supply. For either configuration, ST specifies mandatory local decoupling: 100 nF ceramic capacitor placed <2 mm from each supply pin (VDD/GND and VH/GNDISO), plus a 1–10 µF bulk capacitor nearby to handle pulsed gate current demands.

What isolation certifications apply, and how do they impact system-level safety compliance?

STGAP2SICSANCTR is UL 1577 recognized (E362869), with 4.8 kVPK transient isolation voltage and 2828 VRMS/4000 VPEAK withstand rating. These values satisfy reinforced insulation requirements per IEC 61800-5-1 (drives) and IEC 62040-1 (UPS), enabling direct use in Class I equipment without additional isolation barriers - reducing design validation effort and bill-of-materials cost.