Overview
The L6387E is a high-voltage gate driver manufactured by STMicroelectronics using BCD™ “offline” technology. This device is designed to drive a half-bridge of power MOSFET or IGBT devices. It features a high-side (floating) section capable of operating with voltage rails up to 600 V. The L6387E is known for its simplicity and compact design, making it suitable for various high-voltage applications. It includes two input pins and two output pins, ensuring that the outputs toggle in phase with the inputs. The device also integrates a bootstrap diode and offers UVLO protection on the VCC supply voltage, enhancing reliability and compactness.
Key Specifications
| Specification | Value |
|---|---|
| High-side Voltage Rail | Up to 600 V |
| dV/dt Immunity | ± 50 V/nsec in full temperature range |
| Driver Current Capability | 400 mA source, 650 mA sink |
| Switching Times | 50/30 nsec rise/fall with 1 nF load |
| Logic Inputs | CMOS/TTL compatible with hysteresis and pull-down |
| Bootstrap Diode | Internal |
| Output Synchronization | Outputs in phase with inputs |
| Interlocking Function | Prevents simultaneous high output |
| Operating Temperature | -40°C to 150°C |
| Packaging Options | DIP-8, SO-8, and tape and reel |
Key Features
- High voltage rail up to 600 V
- dV/dt immunity ± 50 V/nsec in full temperature range
- Driver current capability: 400 mA source, 650 mA sink
- Switching times: 50/30 nsec rise/fall with 1 nF load
- CMOS/TTL Schmitt trigger inputs with hysteresis and pull-down
- Internal bootstrap diode
- Outputs in phase with inputs
- Interlocking function to prevent simultaneous high output
- UVLO protection on the VCC supply voltage
Applications
- Home appliances
- Motor drivers (DC, AC, PMDC, and PMAC motors)
- Lighting applications
- Industrial applications and drives
- Induction heating
- HVAC
- Factory automation
- Power supply systems
Q & A
- What is the maximum voltage rail for the high-side section of the L6387E?
The high-side section can operate with voltage rails up to 600 V. - What is the driver current capability of the L6387E?
The device can source 400 mA and sink 650 mA. - What is the switching time of the L6387E with a 1 nF load?
The switching times are 50/30 nsec rise/fall with a 1 nF load. - Are the logic inputs of the L6387E compatible with CMOS/TTL?
Yes, the logic inputs are CMOS/TTL compatible with hysteresis and pull-down. - Does the L6387E have an internal bootstrap diode?
Yes, the L6387E features an internal bootstrap diode. - What is the purpose of the interlocking function in the L6387E?
The interlocking function prevents the outputs from being driven high simultaneously. - What are the packaging options available for the L6387E?
The device is available in DIP-8, SO-8, and tape and reel packaging options. - What is the operating temperature range of the L6387E?
The operating temperature range is -40°C to 150°C. - What kind of protection does the L6387E offer on the VCC supply voltage?
The device offers UVLO (Under-Voltage Lock-Out) protection on the VCC supply voltage. - In which applications is the L6387E commonly used?
The L6387E is commonly used in home appliances, motor drivers, lighting applications, industrial drives, induction heating, HVAC, factory automation, and power supply systems.
