Overview
The L6384E, produced by STMicroelectronics, is a high-voltage gate driver designed to drive a half-bridge of power MOSFET or IGBT devices. It is manufactured using the BCD™ “offline” technology, enabling it to operate with a high voltage rail up to 600 V. This device is particularly suited for applications requiring robust and reliable gate driving in high-voltage environments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| High Voltage Rail | Up to 600 V | V |
| dV/dt Immunity | ± 50 V/nsec | V/nsec |
| Driver Current Capability | 400 mA source, 650 mA sink | mA |
| Switching Times | 50/30 nsec rise/fall with 1 nF load | nsec |
| Logic Inputs | CMOS/TTL Schmitt trigger with hysteresis and pull-down | - |
| Shutdown Input | High impedance pin with shutdown functionality | - |
| Deadtime Setting | Tunable by external resistor (0.4 - 3.1 μs) | μs |
| Undervoltage Lockout (UVLO) | Protection with voltage clamp on VCC | - |
| Integrated Bootstrap Diode | Patented structure replacing external diode | - |
| Package Options | DIP-8, SO-8 | - |
| Junction Temperature | -45 to 125 °C | °C |
| Total Power Dissipation | 750 mW (Tj = 85 °C) | mW |
Key Features
- High voltage rail up to 600 V, making it suitable for high-voltage applications.
- High dV/dt immunity (± 50 V/nsec) across the full temperature range.
- Driver current capability of 400 mA source and 650 mA sink.
- Fast switching times with 50/30 nsec rise/fall times for a 1 nF load.
- CMOS/TTL Schmitt trigger inputs with hysteresis and pull-down for robust logic handling.
- Shutdown input and deadtime setting functionality to prevent cross-conduction and ensure safe operation.
- Undervoltage lockout (UVLO) protection and voltage clamp on the VCC supply voltage.
- Integrated bootstrap diode, eliminating the need for an external diode and reducing leakage losses.
Applications
- Home appliances
- Induction heating
- HVAC (Heating, Ventilation, and Air Conditioning)
- Industrial applications and drives
- Motor drivers – DC, AC, PMDC, and PMAC motors
- Lighting applications
- Factory automation
- Power supply systems
Q & A
- What is the maximum high voltage rail for the L6384E?
The L6384E can operate with a high voltage rail up to 600 V.
- What is the driver current capability of the L6384E?
The L6384E can source 400 mA and sink 650 mA.
- How does the deadtime setting work on the L6384E?
The deadtime can be set using an external resistor connected to the DT/SD pin, allowing a range of 0.4 to 3.1 μs.
- What type of logic inputs does the L6384E have?
The L6384E has CMOS/TTL Schmitt trigger inputs with hysteresis and pull-down.
- Does the L6384E have integrated protection features?
Yes, it includes undervoltage lockout (UVLO) protection and a voltage clamp on the VCC supply voltage.
- What is the purpose of the integrated bootstrap diode in the L6384E?
The integrated bootstrap diode replaces the external diode, reducing leakage losses and providing a more compact solution.
- What are the package options available for the L6384E?
The L6384E is available in DIP-8 and SO-8 packages.
- What is the junction temperature range for the L6384E?
The junction temperature range is -45 to 125 °C.
- What is the total power dissipation of the L6384E at 85 °C junction temperature?
The total power dissipation is 750 mW at 85 °C junction temperature.
- What are some common applications for the L6384E?
Common applications include home appliances, induction heating, HVAC, industrial drives, motor drivers, lighting applications, factory automation, and power supply systems.
