FOD8318V

Isolators - Gate Drivers Overview

The FOD8318V is a MOSFET output optocoupler featuring an active Miller clamp for IGBT drive applications. It provides a push-pull output stage with a peak output current of 2.5 A and a propagation delay of 500 ns. The device operates within a temperature range of -40°C to +100°C and offers an isolation voltage of 4243 Vrms. It is housed in a 16-SOIC wide-body package, designed for high-speed switching with rise and fall times of 34 ns.

Isolators - Gate Drivers Feature Summary

• Integrated active Miller clamp prevents false triggering during high dv/dt events
• Push-pull output stage delivers robust gate drive capability
• Wide-body SOIC-16 package ensures enhanced creepage and clearance distances

Isolators - Gate Drivers Applications

• IGBT gate driving in medium power inverters
• Motor control systems requiring high isolation
• Industrial power conversion circuits

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'V' corresponds to the wide-body SOIC-16 packaging configuration as documented in the official datasheet. Confirm that the required isolation voltage rating of 4243 Vrms meets the safety standards of the target application. Ensure compatibility with the specified operating temperature range of -40°C to +100°C before finalizing procurement.

Isolators - Gate Drivers Selection Notes

Select this component when driving IGBTs up to 150 A at 1200 V or 1500 V ratings. The integrated Miller clamp eliminates the need for external snubber circuits, simplifying design. Choose this part for applications requiring high common-mode transient immunity and fast switching speeds in isolated power stages.

Isolators - Gate Drivers Part Context

This device belongs to the FOD8318 series of advanced IGBT drive optocouplers from onsemi. It is engineered to replace discrete driver solutions by integrating protection features directly into the optocoupler package. The series is designed for industrial and automotive power electronics where reliability and compactness are critical.

Isolators - Gate Drivers Replacement Considerations

Check for direct pin-compatible substitutes within the same family, such as variants with different packaging options. Verify that any replacement maintains the 2.5 A output current and active Miller clamp functionality. Ensure the alternative part supports the same 4243 Vrms isolation voltage.

Isolators - Gate Drivers FAQ

What is the function of the active Miller clamp?

The active Miller clamp suppresses spurious turn-on of the IGBT caused by rapid voltage transients (dv/dt) across the collector-emitter terminals.

What is the maximum output current capability?

The FOD8318V provides a peak output current of 2.5 A, sufficient to drive most standard IGBTs.