FAN7387MX

Overview

The FAN7387MX is a monolithic half-bridge gate driver IC manufactured by onsemi, designed for MOSFET and IGBT applications. It operates within a supply voltage range of 11 V to 14 V and features an output current capability of 650 mA. The device utilizes an external resistor and capacitor (RCT) to set the internal clock frequency, typically ranging from 18 kHz to 22 kHz. Key timing parameters include a rise time of 50 ns and a fall time of 30 ns. It supports a maximum power dissipation of 625 mW and functions reliably across an operating temperature range of -40°C to +125°C. The component is housed in an 8-SOIC surface-mount package.

Feature Summary

• Integrates self-oscillating half-bridge control with external RCT timing for flexible frequency setting
• Provides precise dead-time control via external resistance to minimize switching losses
• Includes high-side and low-side under-voltage lockout (UVLO) for circuit protection
• Features an integrated shunt regulator to stabilize internal voltage and reduce external component count

Applications

• Half-bridge inverters
• Switched-mode power supplies (SMPS)
• HID lamp ballasts

Procurement Notes

Verify current availability status as the FAN7387MX may be discontinued or subject to specific ordering requirements. Confirm RoHS compliance and environmental classification details through official manufacturer documentation. Ensure that any substitute components meet identical electrical specifications and thermal performance criteria for direct replacement in existing designs.

Selection Notes

Select this component for designs requiring a simple, cost-effective half-bridge solution with built-in oscillation. It is suitable for applications where frequency stability over temperature is critical. Consider the 8-SOIC package constraints and the need for external timing components when finalizing the schematic layout.

Part Context

The FAN7387MX belongs to the FAN7387 series of high-voltage gate drivers. This family is engineered for robust performance in power conversion and lighting control systems. The MX suffix indicates a tape-and-reel packaging format, distinct from other variants like the N (DIP) or M (tube) packages within the same functional series.

Replacement Considerations

• NCL30059BDR2G

FAQ

How is the operating frequency determined?

The internal clock frequency is set by connecting an external resistor and capacitor (RCT) to the designated pins.

Does the device support external synchronization?

Yes, the FAN7387MX includes an external sync function to allow synchronization with other system clocks.