STMicroelectronics

STGAP1AS  

Isolators - Gate Drivers

STGAP1AS Description

The STGAP1AS from STMicroelectronics is a single-channel gate driver featuring 2.5kVrms galvanic isolation, designed for high-performance power electronics applications. Leveraging magnetic coupling technology, it ensures robust signal transmission while maintaining isolation integrity. With an output supply voltage range of 4.5V to 36V and high peak output current (2.5A sink/source), it efficiently drives power switches like MOSFETs and IGBTs. Although marked as obsolete, its automotive-grade reliability and low propagation delay (130ns max) make it suitable for legacy designs requiring high isolation and fast switching.

STGAP1AS Features

• High Isolation: 2500Vrms reinforced isolation ensures safety in high-voltage systems.
• Fast Switching: Rise/fall times of 25ns (max) and pulse width distortion <10ns minimize switching losses.
• Robust Output: 2.5A sink/source current enables efficient gate drive for high-power devices.
• Wide Voltage Range: Supports 4.5V–36V output supply, accommodating diverse power stages.
• Automotive Compliance: AEC-Q100 qualified, ideal for harsh environments.
• Magnetic Coupling: Immune to common-mode noise, enhancing signal integrity.
• Compact Package: 24-pin SOIC surface-mount design saves board space.

STGAP1AS Applications

• Motor Drives: High-current drive capability for industrial and automotive motor control.
• Power Supplies: Isolated gate driving in SMPS, inverters, and PFC circuits.
• Renewable Energy: Solar inverters and battery management systems (BMS) requiring high isolation.
• Industrial Automation: PLC I/O modules and servo drives benefiting from fast switching.
• Legacy Systems: Maintenance or replication of older designs where obsolete components are still critical.

Conclusion of STGAP1AS

The STGAP1AS excels in high-voltage, high-speed gate driving with its magnetic isolation, automotive-grade robustness, and 2.5A output capability. While obsolete, its low propagation delay, noise immunity, and wide voltage range make it a reliable choice for motor control, power conversion, and industrial systems. Engineers working on legacy or high-isolation designs may find it indispensable despite its status. For new designs, STMicroelectronics’ newer alternatives should be evaluated for improved performance and availability.

STGAP1AS Documents

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STGAP1AS