Overview
The L6388ED is a high voltage gate driver manufactured by STMicroelectronics, utilizing the BCD™ “offline” technology. This device is designed to drive a half-bridge of power MOSFET/IGBT devices, with the high-side (floating) section capable of operating with voltage rails up to 600 V. The L6388ED features two input and two output pins, ensuring that the outputs switch in phase with the inputs. The logic inputs are CMOS/TTL compatible, supporting 3.3 V, 5 V, and 15 V, which simplifies interfacing with controlling devices. The integrated bootstrap diode enhances the compactness and reliability of the driver. Additionally, the device includes UVLO protection on both supply voltages (VCC and VBOOT) to protect against voltage drops on the supply lines.
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 | 70/40 nsec rise/fall with 1 nF load | nsec |
| Logic Input Compatibility | 3.3 V, 5 V, 15 V CMOS/TTL | V |
| Operating Temperature Range | -45°C to 125°C | °C |
| Package Options | DIP-8, SO-8, Tape and Reel | |
| Total Power Dissipation (Tj = 85°C) | 750 mW | mW |
| Junction Temperature | 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: 400 mA source, 650 mA sink
- Switching times: 70/40 nsec rise/fall with 1 nF load
- 3.3 V, 5 V, 15 V CMOS/TTL input comparators with hysteresis and pull-down
- Internal bootstrap diode
- Outputs in phase with inputs
- Deadtime and interlocking function to prevent cross conduction
- UVLO protection on both supply voltages (VCC and VBOOT)
Applications
- Home appliances
- Industrial applications and drives
- Motor drivers – DC, AC, PMDC and PMAC motors
- Induction heating
- HVAC
- Factory automation
- Lighting applications
- Power supply systems
Q & A
- What is the maximum high voltage rail that the L6388ED can handle?
The L6388ED can handle a high voltage rail up to 600 V.
- What are the driver current capabilities of the L6388ED?
The L6388ED can source 400 mA and sink 650 mA.
- What are the switching times of the L6388ED with a 1 nF load?
The switching times are 70/40 nsec rise/fall with a 1 nF load.
- What logic input voltages are supported by the L6388ED?
The L6388ED supports 3.3 V, 5 V, and 15 V CMOS/TTL logic inputs.
- Does the L6388ED have an integrated bootstrap diode?
Yes, the L6388ED features an integrated bootstrap diode.
- What is the purpose of the deadtime and interlocking function in the L6388ED?
The deadtime and interlocking function prevent cross conduction of the external MOSFETs by ensuring that the two outputs cannot be active at the same time and by introducing a delay before the other output can be turned on after one is turned off.
- What is the operating temperature range of the L6388ED?
The operating temperature range is -45°C to 125°C.
- In what packages is the L6388ED available?
The L6388ED is available in DIP-8, SO-8, and tape and reel packaging options.
- What is the total power dissipation of the L6388ED at Tj = 85°C?
The total power dissipation is 750 mW at Tj = 85°C.
- Does the L6388ED have UVLO protection?
Yes, the L6388ED features UVLO protection on both supply voltages (VCC and VBOOT).
