SI8261BAC-C-ISR

Isolators - Gate Drivers Overview

The SI8261BAC-C-ISR is a single-channel isolated gate driver from Skyworks Solutions, designed as an optocoupler replacement. It features capacitive coupling technology with 3750 Vrms isolation capability. The device delivers a peak output current of 4 A and operates within a supply voltage range of 13.5 V to 30 V. It supports non-inverting logic input and functions across a temperature range of -40°C to +125°C. Packaged in an 8-SOIC surface-mount format, it includes UVLO protection and meets AEC-Q100 automotive qualification standards.

Isolators - Gate Drivers Feature Summary

• Capacitive coupling technology provides high-speed signal transmission with robust electromagnetic interference immunity compared to traditional optical isolators.
• Integrated under-voltage lockout (UVLO) circuitry ensures reliable gate drive operation by preventing partial turn-on during power-up or brown-out conditions.
• Automotive-grade qualification aligns with AEC-Q100 standards for durability and performance consistency in demanding vehicular electronic environments.

Isolators - Gate Drivers Applications

• Motor control systems requiring galvanic isolation between microcontroller logic and power stages
• Industrial inverters and converters utilizing IGBT or MOSFET switching applications
• Automotive power electronics including electric vehicle traction and battery management systems

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix C-ISR against official Skyworks documentation to confirm the tape-and-reel packaging configuration. Ensure that the 8-SOIC footprint matches your PCB layout requirements. Confirm AEC-Q100 compliance if the application mandates automotive-grade reliability standards. Cross-reference the datasheet revision date to ensure compatibility with current manufacturing processes.

Isolators - Gate Drivers Selection Notes

Select this component when a single-channel, high-current 4 A drive is required with strong isolation barriers. The capacitive coupling offers superior longevity over optical alternatives due to the absence of degrading LED components. Consider the 3750 Vrms rating for safety-critical interfaces. Evaluate the non-inverting logic requirement against system design needs before finalizing the selection.

Isolators - Gate Drivers Part Context

This part belongs to the Si8261 family of isolated gate drivers, which replaces legacy optocouplers in modern power electronics. The series emphasizes speed, reliability, and compact form factors. The BAC variant specifically denotes the 3750 Vrms isolation level and 4 A output capability within the standard SOIC-8 package configuration offered by Skyworks Solutions.

Isolators - Gate Drivers Replacement Considerations

Direct substitutes include other Skyworks Si8261 variants such as SI8261BBC-C-ISR or SI8261BCC-C-ISR, depending on specific isolation voltage and package preferences. Verify pinout compatibility and electrical parameters before swapping with competitors' products to ensure functional equivalence in the target circuit.