SI823H8AB-IM1

Isolators - Gate Drivers Overview

The SI823H8AB-IM1 is a dual-channel, galvanically isolated gate driver from the Si823Hx series by Skyworks Solutions. It utilizes capacitive coupling technology to provide electrical isolation with a rated insulation voltage of 2.5 kVrms. The device features independent high-side and low-side outputs, each capable of driving power switches with peak currents up to 6 A. Key timing specifications include a maximum propagation delay of 30 ns, with rise and fall times of 12 ns. It operates within a supply voltage range of 5.5 V to 30 V and supports an extended industrial temperature range from -40 °C to +125 °C.

Isolators - Gate Drivers Feature Summary

• Capacitive coupling provides high-speed signal transmission with robust common-mode transient immunity
• Dual independent channels support asymmetric or symmetric drive configurations for half-bridge applications
• Integrated under-voltage lockout (UVLO) ensures reliable switching by preventing partial turn-on during low supply conditions

Isolators - Gate Drivers Applications

• Industrial motor drives and inverters
• Switched-mode power supplies (SMPS)
• Inverter circuits in renewable energy systems

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'IM1' against the manufacturer's current datasheet to confirm package dimensions and pinout compatibility. Ensure that the required isolation voltage rating of 2.5 kVrms meets the safety standards of the target application. Cross-reference the operating temperature range and UVLO thresholds with system power supply characteristics to guarantee stable performance under all load conditions.

Isolators - Gate Drivers Selection Notes

Select this component when high-speed switching with strong noise immunity is required in isolated power stages. The dual-channel architecture simplifies design for half-bridge topologies compared to single-channel alternatives. Consider the 6 A output capability for driving medium-power MOSFETs or IGBTs without external buffer stages. Verify that the DFN-14 package fits the available PCB real estate and thermal management requirements.

Isolators - Gate Drivers Part Context

This part belongs to the Si823Hx family of Isodrivers, which replaces traditional transformer-based isolation solutions. The family offers improved reliability and smaller form factors due to monolithic silicon construction. The SI823H8AB variant specifically addresses applications requiring balanced rise and fall times for efficient power conversion.

Isolators - Gate Drivers Replacement Considerations

Direct replacements may include other parts within the Si823Hx series with compatible pinouts and electrical ratings. Verify that substitute components maintain the same 2.5 kVrms isolation rating and 6 A peak output current capabilities.