Overview
The L6390D, produced by STMicroelectronics, is a full-featured high-voltage device manufactured using the BCD™ “offline” technology. It is a single-chip half-bridge gate driver designed for N-channel power MOSFETs or IGBTs. The high-side (floating) section of the L6390D can operate with a voltage rail up to 600 V, making it suitable for a wide range of high-voltage applications. The device includes dedicated input pins for each output and a shutdown pin, with logic inputs that are CMOS/TTL compatible down to 3.3 V for easy interfacing with control devices.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| High Voltage Rail | Up to 600 V | V |
| dV/dt Immunity | ± 50 V/nsec | V/nsec |
| Driver Current Capability | 290 mA source, 430 mA sink | mA |
| Switching Times | 75/35 nsec rise/fall with 1 nF load | nsec |
| Logic Input Compatibility | 3.3 V, 5 V TTL/CMOS with hysteresis | V |
| Package | SO-16 | - |
| Thermal Resistance Junction to Ambient | 120 °C/W | °C/W |
| Junction Temperature | -150 °C | °C |
| Storage Temperature | -50 to 150 °C | °C |
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 75/35 nsec rise/fall with 1 nF load
- 3.3 V, 5 V TTL/CMOS inputs with hysteresis
- Integrated bootstrap diode
- Operational amplifier for advanced current sensing
- Comparator for fast fault protection
- Smart shutdown function
- Adjustable deadtime
- Interlocking function
- Compact and simplified layout
- Bill of material reduction
Applications
- Home appliances
- Motor drivers – DC, AC, PMDC, and PMAC motors; FOC and sensorless BEMF detection systems
- Industrial applications and drives
- Induction heating
- HVAC
- Factory automation
- Power supply systems
Q & A
- What is the maximum voltage rail the L6390D can handle?
The L6390D can handle a voltage rail up to 600 V. - What is the driver current capability of the L6390D?
The driver current capability is 290 mA source and 430 mA sink. - What type of logic inputs does the L6390D support?
The L6390D supports 3.3 V, 5 V TTL/CMOS inputs with hysteresis. - Does the L6390D have integrated protection features?
Yes, it includes UVLO protection, smart shutdown function, and a comparator for fast fault protection. - What is the purpose of the integrated bootstrap diode in the L6390D?
The integrated bootstrap diode simplifies the application PCB design by eliminating the need for an external high voltage fast recovery diode. - Can the L6390D be used in high-frequency applications?
Yes, the matched delays between low-side and high-side sections guarantee no cycle distortion and allow high frequency operation. - What types of motors can the L6390D drive?
The L6390D can drive DC, AC, PMDC, and PMAC motors, including those using field-oriented control (FOC) and sensorless BEMF detection systems. - How does the smart shutdown function work in the L6390D?
The smart shutdown function uses a comparator to detect fault conditions and immediately turns off the outputs, minimizing the propagation delay between fault detection and output switch-off. - What is the thermal resistance junction to ambient for the L6390D in an SO-16 package?
The thermal resistance junction to ambient is 120 °C/W. - What are the storage temperature limits for the L6390D?
The storage temperature limits are -50 to 150 °C.
