Product Overview: L6387 High-Voltage Gate Driver

The L6387 from STMicroelectronics is a high-voltage, high-speed gate driver specifically designed to drive both the high-side and low-side N-channel MOSFETs in a half-bridge configuration. This advanced and integrated solution is ideal for a wide range of power applications, including motor drivers, DC-DC converters, and class D power amplifiers.

Key Features

• High-Voltage Capability: The L6387 is capable of handling voltages up to 600V, making it suitable for applications requiring high voltage operation.
• Integrated Bootstrap Diode: It includes an integrated high-voltage bootstrap diode, which simplifies the design of the bootstrap circuitry necessary for the high-side MOSFET drive.
• Dual Independent Channels: The device features two independent logic inputs for both the high-side and low-side gate drives, providing designers with flexibility and precise control over the switching characteristics.
• Matched Delay Times: With matched delay times for both channels, the L6387 ensures improved performance by minimizing dead-time and reducing the risk of cross-conduction in the half-bridge.
• Under-Voltage Lockout (UVLO): The UVLO feature protects the device and power switches by preventing operation when the supply voltage is insufficient.
• Advanced Protection: The device includes over-temperature protection and is designed to withstand voltage spikes due to fast dV/dt on the high-voltage rail, enhancing system reliability.

Applications

The versatility of the L6387 makes it an excellent choice for a variety of applications. Its robust design and advanced features ensure reliable operation in:

• Switch Mode Power Supplies (SMPS)
• Power Inverters
• Brushless DC Motor Drives
• AC-DC Converters
• Welding Equipment

Conclusion

STMicroelectronics' L6387 is a powerful gate driver that offers a blend of high-voltage capability, integrated features, and protection mechanisms. Its ability to efficiently drive MOSFETs in high-voltage applications makes it a go-to solution for engineers looking to enhance the performance and reliability of their power management systems.