Overview
The L6385ED, manufactured by STMicroelectronics, is a high-voltage high and low-side driver designed to drive half-bridge configurations of power MOSFET or IGBT devices. This device is built using BCD™ “offline” technology and is notable for its simplicity and compact design. It can handle high-side (floating) voltage rails up to 600 V and features independent output capabilities to source 400 mA and sink 650 mA. The L6385ED includes integrated bootstrap diode, CMOS/TTL compatible logic inputs, and undervoltage lockout (UVLO) protection on both the lower and upper driving sections to ensure reliability and protection against voltage drops.
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 | - |
| Undervoltage Lockout (UVLO) | On lower and upper driving sections (VCC and VBOOT) | - |
| Bootstrap Diode | Integrated | - |
| Output Synchronization | Outputs in phase with inputs | - |
| Operating Temperature | -45 to 125 °C | °C |
| Package 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
- Undervoltage lockout on lower and upper driving sections (VCC and VBOOT)
- Internal bootstrap diode
- Outputs in phase with inputs
Applications
- Home appliances
- Induction heating
- HVAC (Heating, Ventilation, and Air Conditioning)
- Motor drivers – SR motors, DC, AC, PMDC, and PMAC motors
- Asymmetrical half-bridge topologies
- Industrial applications and drives
- Lighting applications
- Factory automation
- Power supply systems
Q & A
- What is the maximum high-side voltage rail for the L6385ED?
The L6385ED can handle high-side voltage rails up to 600 V.
- What are the driver current capabilities of the L6385ED?
The L6385ED can source 400 mA and sink 650 mA.
- What is the switching time for the L6385ED with a 1 nF load?
The switching times are 50/30 nsec rise/fall with a 1 nF load.
- Does the L6385ED have integrated bootstrap diode?
- What are the logic input types for the L6385ED?
The logic inputs are CMOS/TTL Schmitt trigger with hysteresis and pull-down.
- What is the operating temperature range for the L6385ED?
The operating temperature range is -45 to 125 °C.
- What are the package options available for the L6385ED?
The device is available in DIP-8, SO-8, and tape and reel packaging options.
- What kind of protection does the L6385ED offer against voltage drops?
The L6385ED features undervoltage lockout (UVLO) protection on both the lower and upper driving sections (VCC and VBOOT).
- Can the outputs of the L6385ED be driven simultaneously high?
- What are some common applications for the L6385ED?
