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Home > Products > Isolators > Isolators - Gate Drivers

STMicroelectronics STGAP1AS

Name: STGAP1AS
Brand: STMicroelectronics
SKU: STGAP1AS
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STGAP1AS

Manufacturer:: STMicroelectronics

Category:: Isolators - Gate Drivers

Package:: 24-SOIC (0.295", 7.50mm Width)

Datasheet:: STGAP1AS.pdf

Description:: DGTL ISO 2.5KV 1CH GATE DVR 24SO

Quantity:: RFQ Add To RFQ list

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Inventory:2,649

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Product details

Overview

STGAP1AS from STMicroelectronics is an automotive-qualified, galvanically isolated single-channel IGBT/MOSFET gate driver with 5 A sink/source capability, 100 ns propagation delay, ±50 V/ns dV/dt immunity, and integrated protection including desaturation detection, active Miller clamp, V_CE clamping, and 2-level turn-off. It targets high-reliability motor drives in EV/HEV inverters and industrial 600–1200 V systems.

For engineers reviewing the STGAP1AS datasheet, STGAP1AS pinout, STGAP1AS application, or STGAP1AS equivalent, key selection considerations include its programmable SPI-configurable deadtime, negative gate drive support, UL 1577-certified isolation (5 kV_RMS, 1 min), and diagnostic status output for real-time fault reporting in safety-critical traction and charging systems.

Technical Context

The STGAP1AS implements true galvanic isolation between low-voltage control logic and high-voltage power stage via integrated capacitive isolation barrier. Its architecture supports rail-to-rail output with separate sink and source terminals, enabling flexible gate driving configurations including negative V_EE supply for enhanced noise immunity.

Protection is implemented at silicon level: desaturation detection uses dedicated SENSE input with programmable threshold; V_CE clamping activates during overvoltage events; Miller clamp engages automatically during turn-off to prevent spurious turn-on; and 2-level turn-off provides controlled soft-shutdown under fault conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Isolation Voltage	5 kV_RMS (1 min), UL 1577 certified - enables safe operation in 1200 V DC-link systems with reinforced insulation
Peak Output Current	5 A sink/source at 25 °C - drives high-Qg IGBTs up to 1200 V/400 A in half-bridge motor inverters
Propagation Delay	100 ns max - ensures precise PWM timing alignment for <100 kHz switching in traction inverters
dV/dt Immunity	±50 V/ns across –40 to 125 °C - suppresses false triggering in high-di/dt EV power stages
Supply Voltage Range	V_H: 13–20 V; V_L: 4.5–5.5 V - supports wide-input industrial and automotive 12 V/24 V rails
Fault Protection	DESAT, V_CE clamp, UVLO/OVLO, thermal warning/shutdown, Miller clamp, 2LTO - full-cycle fault coverage without external circuitry
SPI Interface	4-wire, CRC-protected, register-based configuration - enables runtime parameter tuning (deadtime, deglitch, thresholds) and diagnostics

Pinout & Package

STGAP1AS is housed in a SO24W (wide-body SOIC-24) package with 8.9 mm creepage/clearance, optimized for high-voltage isolation and thermal dissipation in automotive power modules.

Pin/Terminal	Circuit Role	Design Meaning
V_DD	Low-side logic supply	5 V input powering internal LV regulator and SPI interface; UVLO threshold at 4.5 V
V_H	High-side gate drive supply	13–20 V rail for output stage; OVLO/UVLO monitored independently
V_L	Low-side gate drive return	Isolated ground reference for LV section; supports negative gate bias down to –5 V
G_ON/G_OFF	Independent gate drive outputs	Separate 5 A sink/source paths enable asymmetric drive strength and reduce external component count
SENSE	Overcurrent sense input	Analog input for shunt-based current monitoring; programmable threshold via SPI (100–500 mV)
DESAT	Desaturation detection input	Connects to IGBT collector via RC network; triggers fast shutdown on V_CE rise > 7 V
DIAG	Open-drain fault status output	Asserts low on any active protection event; readable via SPI STATUS registers
SD	Hardware shutdown input	Asynchronous stop command - forces immediate 2-level turn-off regardless of SPI state

Key Features

Feature	Design Value
Programmable deadtime	Configurable via SPI (0–1000 ns); violation error flag prevents shoot-through in half-bridge designs
Active Miller clamp	Automatically engages during turn-off to discharge gate capacitance and block dv/dt-induced turn-on
V_CE active clamping	Clamps IGBT collector voltage during desaturation to limit energy dissipation and prevent destruction
2-level turn-off (2LTO)	Soft-shutdown mode: first rapid gate discharge, then slow ramp-down - reduces voltage overshoot and EMI
Self-diagnostic routines	On-chip path checks for G_ON/G_OFF, SENSE comparator, DESAT comparator, and resistor integrity - meets ASIL-B requirements

Applications

EV Traction Inverter

Industrial Motor Drive

Use Scenario: Driving 1200 V IGBTs in dual-motor inverter for battery electric vehicle (BEV) powertrain.

IC Role / Device Role / Timing Role: Isolated gate driver providing synchronized, fault-protected switching with <100 ns timing accuracy for field-oriented control (FOC).

Use Value: Enables AEC-Q100-compliant, SIL-2-capable inverter design with integrated desat detection and 2LTO - eliminates need for discrete protection ICs.

Use Scenario: Controlling 600 V IGBTs in variable-frequency drive (VFD) for HVAC compressors and pumps.

IC Role / Device Role / Timing Role: High-current gate driver with programmable deadtime and negative gate bias for robust operation in noisy factory environments.

Use Value: ±50 V/ns dV/dt immunity and active Miller clamp prevent false triggering during load transients, improving system uptime.

DC Fast Charging Station

Solar String Inverter

Use Scenario: Bidirectional switching in 1000 V DC/DC converter stage of 150 kW EV charger.

IC Role / Device Role / Timing Role: Galvanically isolated driver managing high-side IGBTs with V_CE clamping and thermal shutdown for grid-interfaced power conversion.

Use Value: UL 1577-certified 5 kV_RMS isolation meets IEC 62109 safety standards for ungrounded DC systems.

Use Scenario: Driving N-channel MOSFETs in MPPT-enabled string inverters operating at 1500 V DC input.

IC Role / Device Role / Timing Role: Single-channel driver with SENSE-based overcurrent protection and SPI-configurable deglitch filtering for partial shading resilience.

Use Value: Programmable input deglitch (50–500 ns) rejects transient noise from PV array arcing while preserving fast fault response.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Si827x (Silicon Labs)	Capacitive isolation, 4 A peak, no integrated V_CE clamping or 2LTO; requires external Miller clamp and DESAT circuitry	Targeted at cost-sensitive industrial drives where full fault coverage is not required	Choose when lower BOM cost outweighs need for autonomous protection features
UCC5390 (Texas Instruments)	Reinforced isolation, 10 A peak, but lacks SPI configurability, SENSE input, and programmable deadtime	Better suited for fixed-parameter, high-current industrial UPS where flexibility is secondary to drive strength	Prefer when maximum 10 A sink/source is mandatory and diagnostics can be handled externally

Compared with Si827x and UCC5390, STGAP1AS uniquely combines AEC-Q100 qualification, SPI-based parameter tuning, and five autonomous protections (DESAT, V_CE clamp, Miller clamp, 2LTO, thermal shutdown) in a single SO24W package - making it optimal for automotive and high-safety industrial inverters requiring minimal external components and runtime adaptability.

Availability

STGAP1AS is available at Aetrix Electronics and suitable for EV traction inverters, industrial motor drives, and solar string inverters requiring stable component supply, long-term automotive-grade availability, and traceable sourcing.

Supply support for STGAP1AS 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, specializing in automotive, industrial, and power management ICs with strong vertical integration and AEC-Q100 process validation.

The STGAP series is designed specifically for high-reliability isolated gate driving in electrified transportation and industrial automation, emphasizing functional safety, programmable protection, and system-level diagnostic capability.

FAQ

What is the maximum recommended operating temperature for STGAP1AS?

The STGAP1AS is rated for junction temperatures from –40 °C to 125 °C per AEC-Q100 Grade 1 requirements. Thermal shutdown activates at 150 °C, and thermal warning flag asserts at 135 °C - both configurable via SPI. PCB layout must maintain θ_JA ≤ 45 °C/W using the SO24W exposed pad for reliable operation at full 5 A output.

Does STGAP1AS support negative gate voltage for IGBTs?

Yes. The STGAP1AS supports negative V_L down to –5 V relative to GNDISO, enabling active Miller clamp and negative gate bias to improve noise immunity and prevent spurious turn-on in high-di/dt applications like EV inverters. This is implemented via separate sink/source outputs and isolated V_L terminal.

How is desaturation detection configured and validated?

DESAT detection is configured by connecting a resistor-capacitor network from the IGBT collector to the DESAT pin, with threshold set via SPI CFG3 register (default 7 V). Self-diagnostic routines verify DESAT comparator functionality at startup and during operation, and fault status is reported via DIAG pin and STATUS2 register bit D1.

Can STGAP1AS be used without SPI configuration?

Yes. STGAP1AS powers up in default configuration with factory-programmed parameters: 200 ns deadtime, 200 ns deglitch, 7 V DESAT threshold, and enabled Miller clamp. SPI is optional for tuning - all protection features operate autonomously without host intervention, meeting ASIL-B functional safety requirements out-of-box.

STGAP1AS Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 24-SOIC (0.295", 7.50mm Width)

Packaging:: Tube

Product Status:: Obsolete

Technology:: Magnetic Coupling

Number of Channels:: 1

Voltage - Isolation:: 2500Vrms

Common Mode Transient Immunity (Min):: -

Propagation Delay tpLH / tpHL (Max):: 130ns, 130ns

Pulse Width Distortion (Max):: 10ns

Rise / Fall Time (Typ):: 25ns, 25ns (Max)

Current - Output High, Low:: 2.5A, 2.5A

Current - Peak Output:: -

Voltage - Forward (Vf) (Typ):: -

Current - DC Forward (If) (Max):: -

Voltage - Output Supply:: 4.5V ~ 36V

Grade:: Automotive

Qualification:: AEC-Q100

Operating Temperature:: -40°C ~ 125°C

Mounting Type:: Surface Mount

Supplier Device Package:: 24-SO

Approval Agency:: -

STGAP1AS FAQ

1.How can I place an order for STGAP1AS through Aetrix?

Please submit a Request for Quotation (RFQ) for STGAP1AS on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STGAP1AS reliable?

The price and inventory of STGAP1AS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STGAP1AS is usually 5 days.

3.What payment methods are accepted for STGAP1AS?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STGAP1AS transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STGAP1AS?

STGAP1AS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STGAP1AS order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STGAP1AS?

For technical support, including STGAP1AS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STGAP1AS requirements.

6.How does Aetrix verify that STGAP1AS is sourced from the original manufacturer or authorized distributors?

All STGAP1AS products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STGAP1AS meets industry standards.

7.What is the process for return or replacement of STGAP1AS?

All STGAP1AS units undergo pre-shipment inspection (PSI). If there is an issue with STGAP1AS, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STGAP1AS part is unused and in its original packaging.

Return procedure for STGAP1AS:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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