FOD3120TS

Isolators - Gate Drivers Overview

The FOD3120TS is a high noise immunity gate drive optocoupler manufactured by Fairchild Semiconductor. It features a 2.5A peak output current driving capability, suitable for most 1200V/20A IGBTs and MOSFETs. The device offers a wide supply voltage range from 15V to 30V and fast switching speeds with a maximum propagation delay of 400ns. It includes under-voltage lockout (UVLO) with hysteresis and operates within an extended industrial temperature range of -40°C to 100°C. The component provides 5000 VRMS isolation voltage and exceeds 8.0mm clearance and creepage distance.

Isolators - Gate Drivers Feature Summary

• High noise immunity characterized by minimum common mode rejection
• P-channel MOSFET output stage enables output voltage swing close to the supply rail
• Under Voltage LockOut (UVLO) with hysteresis protection
• Safety and regulatory approved for international standards

Isolators - Gate Drivers Applications

• Industrial inverter systems
• Uninterruptible power supply units
• Induction heating equipment
• Isolated IGBT and power MOSFET gate drive circuits

Isolators - Gate Drivers Procurement Notes

Verify the specific manufacturer status as Fairchild Semiconductor has been acquired by ON Semiconductor. Confirm that the part number corresponds to the SMDIP package variant indicated by the 'TS' suffix. Check for obsolescence or discontinuation notices, as some sources indicate this product may be discontinued or replaced by newer equivalents in the ON Semiconductor portfolio. Ensure compatibility with existing design specifications regarding isolation voltage and thermal requirements.

Isolators - Gate Drivers Selection Notes

Select this component when driving high-power IGBTs or MOSFETs requiring robust noise immunity and fast switching characteristics. The 2.5A peak output current is sufficient for many medium-power applications. Consider the wide supply voltage range and UVLO feature for reliable operation in varying power conditions. Verify that the 5000 VRMS isolation rating meets the safety requirements of the target application environment.

Isolators - Gate Drivers Part Context

The FOD3120 series belongs to the OPTOPLANAR family of gate drive optocouplers. This series is designed for high-performance power systems where electrical isolation and noise rejection are critical. The TS suffix typically denotes a surface-mount DIP package variant. The device integrates an LED input with a push-pull output stage optimized for driving power switches in motor control and inverter applications.

Isolators - Gate Drivers Replacement Considerations

ON Semiconductor lists FOD3120SD as a related part in their current portfolio. Verify if the SD variant serves as a direct replacement for the TS version, considering package differences. Consult official ON Semiconductor documentation for cross-reference information and updated availability status.