Overview
The L6391D, manufactured by STMicroelectronics, is a high-voltage device utilizing the BCD™ “OFF-LINE” technology. It is designed as a single-chip half-bridge gate driver for N-channel power MOSFETs or IGBTs. This driver is particularly suited for applications requiring high voltage and robust protection features.
The device features a high-side (floating) section capable of withstanding voltage rails up to 600 V, and it includes logic inputs that are CMOS/TTL compatible down to 3.3 V, facilitating easy interfacing with microcontrollers or DSPs. An integrated comparator provides protection against overcurrent, overtemperature, and other faults.
Key Specifications
| Parameter | Value |
|---|---|
| High-Side Voltage - Max (Bootstrap) | 600 V |
| Driver Current Capability | 290 mA source, 430 mA sink |
| Switching Times (Rise/Fall) | 75 ns / 35 ns with 1 nF load |
| Logic Voltage - VIL, VIH | 1.1 V, 1.9 V |
| Input Type | Non-Inverting |
| Operating Temperature | -40°C to 150°C (TJ) |
| Package | 14-SOIC (0.154", 3.90mm Width) |
| dV/dt Immunity | ± 50 V/nsec in full temperature range |
Key Features
- High voltage rail up to 600 V
- dV/dt immunity ± 50 V/nsec in full temperature range
- Driver current capability: 290 mA source, 430 mA sink
- Switching times: 75 ns rise, 35 ns fall with 1 nF load
- 3.3 V, 5 V TTL/CMOS inputs with hysteresis
- Integrated bootstrap diode
- Comparator for fault protections
- Smart shutdown function
- Adjustable deadtime
- Interlocking function
- Compact and simplified layout
- Bill of material reduction
- Effective fault protection
- Flexible, easy, and fast design
Applications
- Motor drivers for home appliances, factory automation, industrial drives, and fans
- HID ballasts
- Power supply units
Q & A
- What is the maximum high-side voltage the L6391D can handle?
The L6391D can handle a high-side voltage up to 600 V.
- What are the driver current capabilities of the L6391D?
The L6391D has a driver current capability of 290 mA source and 430 mA sink.
- What are the switching times of the L6391D with a 1 nF load?
The switching times are 75 ns rise and 35 ns fall with a 1 nF load.
- What is the operating temperature range of the L6391D?
The operating temperature range is -40°C to 150°C (TJ).
- What type of inputs does the L6391D support?
The L6391D supports 3.3 V, 5 V TTL/CMOS inputs with hysteresis.
- Does the L6391D have integrated protection features?
Yes, it includes an integrated comparator for fault protections and a smart shutdown function.
- What is the package type of the L6391D?
The package type is 14-SOIC (0.154", 3.90mm Width).
- What is the dV/dt immunity of the L6391D?
The dV/dt immunity is ± 50 V/nsec in the full temperature range.
- What are some common applications of the L6391D?
Common applications include motor drivers for home appliances, factory automation, industrial drives, fans, HID ballasts, and power supply units.
- Does the L6391D support adjustable deadtime?
Yes, the L6391D supports adjustable deadtime.
