STMicroelectronics L6385 High-Voltage Half-Bridge Driver

The L6385 from STMicroelectronics is a high-voltage, high-speed power driver designed to drive N-Channel MOSFETs or IGBTs in a half-bridge configuration. This advanced and innovative IC combines a low-side and high-side driver in a single package, making it an ideal choice for a variety of switching applications including motor drivers, DC-DC converters, and class D power amplifiers.

Key Features:

• Integrated Bootstrap Diode: The L6385 includes an integrated high-voltage bootstrap diode, providing a more efficient and compact solution for the high-side gate drive supply.
• Wide Operating Voltage Range: It operates from a supply voltage ranging from 8V to 600V, catering to a broad spectrum of applications and ensuring robust performance even under varying conditions.
• High Current Drive: Both the high-side and low-side drivers are capable of sourcing and sinking high currents, offering excellent dynamic performance.
• Under-Voltage Lockout (UVLO): The device features UVLO protection on both the low-side and high-side to ensure that the MOSFETs or IGBTs are operated only when the supply voltage is sufficient.
• Matched Delay Times: The L6385 provides matched delay times for both the low-side and high-side drivers, which helps to prevent shoot-through and further enhances system reliability.
• Interlocking Function: An interlocking function is included to prevent simultaneous high-side and low-side conduction, which is critical for preventing short circuits across the power supply.

Applications:

The versatility of the L6385 makes it suitable for a wide range of applications. It is commonly used in motor control circuits, particularly in brushless DC (BLDC) motor drives, AC-DC and DC-DC converters, power inverters, and in general-purpose high-voltage half-bridge circuits.

With its robust design and comprehensive feature set, the L6385 from STMicroelectronics is a reliable and efficient solution for designers looking to improve the performance and compactness of their power management systems.