UCC2921DG4 - English Editing Encyclopedia Entry

Product Overview

Category

UCC2921DG4 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in power management applications.

Characteristics

• UCC2921DG4 is a high-speed, dual MOSFET driver.
• It is designed to drive two N-channel MOSFETs in a half-bridge configuration.
• The device operates from a single 4.5V to 18V power supply.
• It provides a high peak current drive capability for fast switching applications.

Package and Quantity

UCC2921DG4 is available in a small outline package (SOIC) with 8 pins. It is typically sold in reels or tubes containing multiple units.

Essence

The essence of UCC2921DG4 lies in its ability to efficiently drive N-channel MOSFETs in power management systems, enabling fast and reliable switching.

Specifications

• Supply Voltage Range: 4.5V to 18V
• Output Current: ±2A
• Rise/Fall Time: 15ns (typical)
• Operating Temperature Range: -40°C to +125°C
• Input Logic Compatibility: CMOS/TTL

Pin Configuration

UCC2921DG4 features the following pin configuration:

```

---

| | | UCC | | 2921DG4 | |___________|

 Pinout:

   1   VDD
   2   IN1
   3   IN2
   4   GND
   5   OUT1
   6   OUT2
   7   VREF
   8   NC

```

Functional Features

• High-speed switching: UCC2921DG4 enables fast switching of N-channel MOSFETs, reducing power losses and improving efficiency.
• Dual driver: It can drive two MOSFETs simultaneously in a half-bridge configuration.
• Wide supply voltage range: The IC can operate from 4.5V to 18V, providing flexibility in various power management applications.
• High peak current capability: UCC2921DG4 offers a high peak current drive capability of ±2A, ensuring reliable and efficient switching.

Advantages and Disadvantages

Advantages

• Fast switching speed improves overall system efficiency.
• Dual driver configuration allows for more versatile circuit designs.
• Wide supply voltage range enhances compatibility with different power sources.

Disadvantages

• Limited pin count may restrict the complexity of the circuit design.
• Requires external components for complete functionality.

Working Principles

UCC2921DG4 operates by receiving input signals (IN1 and IN2) and generating complementary output signals (OUT1 and OUT2) to drive the gate of N-channel MOSFETs. By controlling the timing and duration of these signals, the IC ensures proper switching of the MOSFETs, enabling efficient power management.

Detailed Application Field Plans

UCC2921DG4 finds applications in various fields, including: - Switch-mode power supplies - Motor control systems - DC-DC converters - Inverters - LED lighting systems

Detailed Alternative Models

Some alternative models that offer similar functionality to UCC2921DG4 are: - IR2101 - TC4427 - HIP4081A - IRS21844

These alternatives can be considered based on specific application requirements and availability.

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