SI8275GB-AS1R

Isolators - Gate Drivers Overview

The SI8275GB-AS1R is a dual-channel, galvanically isolated gate driver from Skyworks Solutions. It features radio frequency coupling technology with a 2.5 kVrms isolation voltage and high common-mode transient immunity (CMTI). The device operates within an extended temperature range of -40°C to +125°C and supports input supply voltages between 2.5 V and 5.5 V. It provides peak output currents up to 4 A and delivers propagation delays of 75 ns maximum. Packaged in a 16-pin SOIC, it is designed for automotive applications requiring robust signal integrity.

Isolators - Gate Drivers Feature Summary

• Automotive-grade reliability compliant with AEC-Q100 standards
• High common-mode transient immunity for noise-sensitive environments
• Galvanic isolation via RF coupling technology
• Integrated undervoltage lockout (UVLO) functionality

Isolators - Gate Drivers Applications

• Automotive power electronics systems
• Motor control drives
• Inverter circuits
• Isolated DC-DC converter interfaces

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'AS1R' against official Skyworks documentation to confirm reel packaging specifications and tape-and-reel dimensions. Ensure that the ordering part number matches the exact pinout and electrical characteristics required by the design. Cross-reference the datasheet revision history to confirm compatibility with current manufacturing processes and material compliance standards before finalizing procurement orders.

Isolators - Gate Drivers Selection Notes

Select this component when high-speed switching with minimal latency skew is critical. The dual-channel configuration simplifies half-bridge drive requirements compared to single-channel alternatives. Consider the 16-pin SOIC package for board space constraints. Verify that the system's common-mode noise levels remain within the specified CMTI limits to ensure reliable operation without false triggering or signal degradation during fast transients.

Isolators - Gate Drivers Part Context

This device belongs to the SI827x family of isolated gate drivers. It utilizes Skyworks' proprietary RF coupling technology to provide galvanic isolation without magnetic components. This approach offers superior performance regarding common-mode transient immunity compared to traditional capacitive or optical isolators. The family is specifically engineered to meet the stringent demands of modern automotive powertrain and body electronics applications.

Isolators - Gate Drivers Replacement Considerations

Direct substitutes within the same series include SI8275DBD-AS1R and SI8275BB-AS1R. These variants share identical electrical specifications and pinouts but may differ in internal logic thresholds or specific automotive qualification grades. Verify that any replacement maintains the required 2.5 kVrms isolation rating and 4 A peak output current capability to ensure functional equivalence in the target application.