SI8271GAD-ISR

Isolators - Gate Drivers Overview

The SI8271GAD-ISR is a single-channel digital isolator gate driver from Skyworks Solutions, utilizing silicon isolation technology for high-voltage switching applications. It features a maximum propagation delay of 75 ns, with rise and fall times of 16 ns and 18 ns respectively. The device operates within an input voltage range of 2.5 V to 5.5 V and supports output supply voltages from 4.2 V to 30 V. It provides a peak output current of 4 A and offers 1 kVrms isolation voltage. The component is qualified under AEC-Q100 standards and functions reliably across a temperature range of -40°C to +125°C.

Isolators - Gate Drivers Feature Summary

• High common-mode transient immunity (CMTI) for robust signal integrity in noisy environments
• Integrated deglitching circuitry to filter out spurious noise pulses
• Programmable dead-time control to prevent shoot-through in power switches
• Under-voltage lockout (UVLO) mechanism ensures safe operation during power transitions

Isolators - Gate Drivers Applications

• Switched-mode power supplies (SMPS)
• Solar inverters and photovoltaic systems
• Motor control drives and industrial automation
• Battery management systems (BMS)

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'ISR' corresponds to the reel packaging format required for automated assembly processes. Confirm that the 1 kV isolation rating meets the safety certification requirements of the target application, as other variants in the series may offer higher isolation levels. Ensure compatibility with the 8-SOIC package dimensions and moisture sensitivity level specifications during storage and handling.

Isolators - Gate Drivers Selection Notes

Select this component when a single-channel isolated gate driver with integrated deglitching is required. It is suitable for applications needing high CMTI and programmable dead-time. Compare against other SI8271 variants if higher isolation voltage or dual-channel configuration is needed. Consider the SOIC-8 package constraints and thermal dissipation capabilities relative to the expected load current and ambient temperature conditions.

Isolators - Gate Drivers Part Context

The SI8271GAD-ISR belongs to the Si827x family of silicon-isolated gate drivers. This series leverages Skyworks' proprietary silicon isolation technology to provide galvanic isolation without using optical components. The family includes various configurations differing in isolation voltage, channel count, and packaging options, catering to diverse industrial and automotive power electronics needs.

Isolators - Gate Drivers Replacement Considerations

SI8271GA-IS: Similar single-channel driver but typically in tube packaging rather than reel.

Isolators - Gate Drivers FAQ

What is the purpose of the deglitch feature in the SI8271GAD-ISR?

The deglitch feature filters out short-duration noise pulses on the input signal, preventing false triggering of the gate driver and ensuring stable operation in electrically noisy environments.

Does the SI8271GAD-ISR support programmable dead-time?

Yes, the device allows for programmable dead-time control to manage the timing between turning off one switch and turning on another, which is critical for preventing shoot-through currents in bridge circuits.