UCC3751DG4

Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High-speed, high-current power MOSFET and IGBT driver - Designed for use in high-frequency switching applications - Provides protection features such as undervoltage lockout (UVLO) and overcurrent shutdown - Offers adjustable dead time to prevent shoot-through current

Package: SOIC-8

Essence: UCC3751DG4 is a high-performance integrated circuit designed to drive power MOSFETs and IGBTs in high-frequency switching applications. It provides essential protection features and adjustable dead time to ensure efficient and safe operation.

Packaging/Quantity: UCC3751DG4 is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 10V to 20V
• Output Current: ±2A
• Operating Temperature Range: -40°C to +125°C
• Rise/Fall Time: 15ns (typical)
• Propagation Delay: 100ns (typical)
• UVLO Threshold: 9.5V (typical)
• Dead Time Range: 50ns to 500ns

Pin Configuration

UCC3751DG4 follows the standard pin configuration for an SOIC-8 package:

___________ | | VDD|1 8|GND IN|2 7|OUT RTN|3 6|CT NC|4 5|NC |___________|

Functional Features

1. High-Speed Switching: UCC3751DG4 is capable of driving power MOSFETs and IGBTs at high frequencies, enabling efficient power conversion in various applications.

2. Protection Features: The IC incorporates undervoltage lockout (UVLO) to prevent operation below a specified voltage threshold. It also includes overcurrent shutdown to protect the power devices from excessive current.

3. Adjustable Dead Time: UCC3751DG4 allows users to adjust the dead time between the high-side and low-side drivers, preventing shoot-through current and enhancing overall system reliability.

Advantages

• High-speed switching capability enables efficient power conversion.
• Protection features ensure safe operation of power devices.
• Adjustable dead time prevents shoot-through current, enhancing system reliability.
• Compact SOIC-8 package offers ease of integration into various circuit designs.

Disadvantages

• Limited output current of ±2A may not be suitable for high-power applications.
• Requires external components for proper operation, increasing overall system complexity.

Working Principles

UCC3751DG4 operates by receiving input signals through the IN pin, which controls the timing and duration of the high-side and low-side drivers. These drivers provide the necessary gate drive voltage to the power MOSFETs or IGBTs, enabling them to switch on and off rapidly. The adjustable dead time feature ensures that both drivers do not conduct simultaneously, preventing shoot-through current and minimizing power losses.

Application Field Plans

UCC3751DG4 finds applications in various fields, including:

1. Switching Power Supplies: Used in high-frequency power converters to efficiently regulate voltage levels.

2. Motor Control: Enables precise control of motor speed and direction in applications such as robotics and industrial automation.

3. Inverters: Facilitates the conversion of DC power to AC power in applications like solar inverters and uninterruptible power supplies (UPS).

4. Electronic Ballasts: Drives fluorescent lamps in lighting systems, providing efficient and flicker-free illumination.

Alternative Models

1. UCC2751: Similar to UCC3751DG4 but with a lower output current capability of ±1A.

2. UCC2752: Dual-channel version of UCC2751, suitable for driving two power devices simultaneously.

3. UCC2753: Triple-channel version of UCC2751, offering the ability to drive three power devices concurrently.

4. UCC2754: Quad-channel version of UCC2751, providing support for up to four power devices.

5. UCC2755: Five-channel version of UCC2751, designed for applications requiring simultaneous control of multiple power devices.

6. UCC2756: Six-channel version of UCC2751, ideal for complex systems with numerous power devices.

7. UCC2757: Seven-channel version of UCC2751, offering extensive flexibility in driving multiple power devices.

8. UCC2758: Eight-channel version of UCC2751, providing maximum scalability for driving numerous power devices.

These alternative models offer varying channel counts and output current capabilities, allowing users to select the most suitable option based on their specific application requirements.