Overview
The L6392DTR, produced by STMicroelectronics, is a 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 device features a high-side (floating) section capable of withstanding a voltage rail up to 600 V, making it suitable for various high-voltage applications. The logic inputs are CMOS/TTL compatible down to 3.3 V, facilitating easy interfacing with microcontrollers or DSPs. The IC also includes an operational amplifier for advanced current sensing, which is particularly useful in field-oriented motor control applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC) | 12.5 - 20 | V |
| Bootstrap Voltage (VBOOT) | 12.4 - 20 | V |
| High-Side Gate Output Voltage (Vhvg) | -0.3 to VBOOT + 0.3 | V |
| Low-Side Gate Output Voltage (VlvG) | -0.3 to VCC + 0.3 | V |
| Driver Current Capability | 290 mA source, 430 mA sink | mA |
| Switching Times (rise/fall) | 75/35 nsec with 1 nF load | nsec |
| dV/dt Immunity | ± 50 V/nsec | V/nsec |
| Junction Temperature (TJ) | -40 to 125 | °C |
| Thermal Resistance (Rth(JA)) | 120 | °C/W |
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
- Adjustable deadtime
- Interlocking function to prevent shoot-through
- Compact and simplified layout
- Bill of material reduction
- Flexible, easy, and fast design
Applications
- Motor drivers for home appliances, factory automation, and industrial drives
- HID ballasts
- Power supply units
Q & A
- What is the maximum voltage the L6392DTR can handle on its high-side section?
The L6392DTR can handle a voltage rail up to 600 V on its high-side section.
- What are the logic input voltage levels compatible with the L6392DTR?
The logic inputs are CMOS/TTL compatible down to 3.3 V.
- What is the driver current capability of the L6392DTR?
The driver current capability is 290 mA source and 430 mA sink.
- What is the switching time for the L6392DTR with a 1 nF load?
The switching times are 75 nsec rise and 35 nsec fall with a 1 nF load.
- Does the L6392DTR have integrated bootstrap diode functionality?
Yes, the L6392DTR features an integrated bootstrap diode.
- What is the purpose of the operational amplifier in the L6392DTR?
The operational amplifier is used for advanced current sensing, particularly in field-oriented motor control applications.
- Can the deadtime be adjusted in the L6392DTR?
Yes, the deadtime is adjustable.
- What is the interlocking function in the L6392DTR?
The interlocking function prevents shoot-through by ensuring that the high-side and low-side drivers are not active simultaneously.
- What are some common applications of the L6392DTR?
Common applications include motor drivers for home appliances, factory automation, industrial drives, HID ballasts, and power supply units.
- What is the thermal resistance (Rth(JA)) of the L6392DTR?
The thermal resistance (Rth(JA)) is 120 °C/W.
