STMicroelectronics

L6386D

L6386D Description

The L6386D from STMicroelectronics is a high-voltage, half-bridge gate driver IC designed for robust power management applications. Operating with a maximum supply voltage of 17V and capable of driving 600V bootstrap high-side voltage, it is tailored for demanding environments. This obsolete (no longer in production) device features two independent channels with inverting logic inputs, ensuring precise control over switching operations. Its fast switching performance (50ns rise, 30ns fall times) and high peak output current (400mA source, 650mA sink) make it suitable for high-frequency power conversion systems. Packaged in a 14-pin SOIC tube, it is optimized for surface-mount applications where space and reliability are critical.

L6386D Features

• High-Side Voltage Capability: Supports up to 600V bootstrap voltage, enabling use in high-voltage half-bridge topologies.
• Fast Switching: Low 50ns rise and 30ns fall times minimize switching losses, improving efficiency.
• Robust Drive Strength: Delivers 400mA source / 650mA sink current for driving large MOSFETs/IGBTs.
• Independent Channels: Two isolated drivers allow flexible half-bridge or low-side configurations.
• Wide Logic Compatibility: 1.5V (VIL) to 3.6V (VIH) input thresholds ensure compatibility with 3.3V/5V controllers.
• Surface-Mount Design: 14-SOIC package for compact PCB integration.

L6386D Applications

• Switch-Mode Power Supplies (SMPS): Efficiently drives power switches in AC-DC and DC-DC converters.
• Motor Control: Ideal for brushless DC (BLDC) and stepper motor drivers in industrial automation.
• Lighting Systems: Used in LED drivers and ballast control for high-voltage operation.
• Solar Inverters: Provides reliable gate driving in renewable energy conversion stages.

Conclusion of L6386D

The L6386D excels in high-voltage, high-speed switching applications, offering a balance of performance, integration, and reliability. While now obsolete, its fast transient response, strong drive capability, and flexible channel configuration made it a preferred choice for power electronics designers. For legacy systems or replacements, alternative STMicroelectronics gate drivers with updated features should be evaluated.