Overview
The L6494LD, produced by STMicroelectronics, is a high-voltage, single-chip half-bridge gate driver designed for N-channel power MOSFETs or IGBTs. Manufactured using the BCD6 “OFF-LINE” technology, this device is particularly suited for medium and high-capacity power MOSFETs and IGBTs. It features a high-side (floating) section capable of withstanding a voltage rail up to 500 V, with a transient withstand voltage of 600 V. The logic inputs are CMOS/TTL compatible down to 3.3 V, facilitating easy interfacing with microcontrollers or DSPs.
Key Specifications
| Parameter | Value |
|---|---|
| Transient Withstand Voltage | 600 V |
| dV/dt Immunity | ± 50 V/ns |
| Driver Current Capability | 2 A source, 2.5 A sink at 25 °C |
| Propagation Delay | 85 ns |
| Switching Times | 25 ns rise/fall with 1 nF load |
| Logic Input Compatibility | CMOS/TTL compatible down to 3.3 V |
| UVLO Protection | Present on both high-side and low-side sections |
| Package | SO-14 |
| Operating Temperature Range | -40°C to 150°C |
Key Features
- Integrated bootstrap diode for simplified PCB design
- Single input and shutdown pin for easy control
- Adjustable deadtime for flexible operation
- Compact and simplified layout reducing the overall bill of material
- Flexible, easy, and fast design process
- UVLO protection on both high-side and low-side sections to prevent low efficiency or dangerous conditions
Applications
The L6494LD is suitable for various industrial and power management applications, including but not limited to:
- Power supplies and DC-DC converters
- Motor control and drive systems
- Industrial automation and control systems
- High-voltage power systems and renewable energy applications
Q & A
- What is the transient withstand voltage of the L6494LD?
The transient withstand voltage of the L6494LD is 600 V.
- What is the driver current capability of the L6494LD?
The L6494LD can source 2 A and sink 2.5 A at 25 °C.
- What is the propagation delay of the L6494LD?
The propagation delay of the L6494LD is 85 ns.
- Does the L6494LD have UVLO protection?
Yes, the L6494LD has UVLO protection on both high-side and low-side sections.
- What is the logic input compatibility of the L6494LD?
The logic inputs of the L6494LD are CMOS/TTL compatible down to 3.3 V.
- What is the package type of the L6494LD?
The L6494LD comes in an SO-14 package.
- What are the operating temperature ranges for the L6494LD?
The operating temperature range for the L6494LD is -40°C to 150°C.
- Does the L6494LD have an integrated bootstrap diode?
Yes, the L6494LD has an integrated bootstrap diode.
- Can the deadtime of the L6494LD be adjusted?
Yes, the deadtime of the L6494LD is adjustable.
- What are some common applications of the L6494LD?
The L6494LD is commonly used in power supplies, DC-DC converters, motor control systems, and high-voltage power systems.
