UCC27221PWPR

Product Overview

Category

UCC27221PWPR belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in power management applications.

Characteristics

• High efficiency
• Fast switching speed
• Low power consumption
• Wide input voltage range

Package

UCC27221PWPR is available in a small outline package (SOP) with PowerPAD™.

Essence

The essence of UCC27221PWPR lies in its ability to efficiently control and manage power in various electronic systems.

Packaging/Quantity

This product is typically packaged in reels, with a quantity of 2500 units per reel.

Specifications

• Input Voltage Range: 4.5V to 18V
• Output Voltage Range: 0V to 18V
• Maximum Output Current: 4A
• Operating Temperature Range: -40°C to 125°C
• Switching Frequency: Up to 2MHz
• Supply Current: 1.8mA

Detailed Pin Configuration

UCC27221PWPR features a dual-channel gate driver with eight pins:

1. VDD: Positive supply voltage for the IC.
2. GND: Ground reference for the IC.
3. HO1: Output pin for high-side channel 1.
4. LO1: Output pin for low-side channel 1.
5. HO2: Output pin for high-side channel 2.
6. LO2: Output pin for low-side channel 2.
7. VBS: Bootstrap supply voltage for high-side drivers.
8. VS: Supply voltage for low-side drivers.

Functional Features

• Dual-channel gate driver for independent control of two power switches.
• Integrated bootstrap diode for high-side driver supply.
• Adaptive dead-time control for optimized switching performance.
• Under-voltage lockout protection.
• Over-current protection.

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power consumption.
• Fast switching speed enables high-frequency operation.
• Wide input voltage range allows for versatile applications.
• Integrated bootstrap diode simplifies circuit design.

Disadvantages

• Limited maximum output current may restrict certain high-power applications.
• Operating temperature range may not be suitable for extreme environments.

Working Principles

UCC27221PWPR operates by receiving control signals from a microcontroller or other control circuitry. It generates the necessary gate drive voltages to control the power switches in a power conversion system. The adaptive dead-time control ensures minimal overlap between high-side and low-side switch operations, preventing shoot-through currents.

Detailed Application Field Plans

UCC27221PWPR finds application in various power management systems, including: 1. Switch-mode power supplies (SMPS) 2. Motor drives 3. LED lighting systems 4. Solar inverters 5. Battery charging circuits

Detailed and Complete Alternative Models

1. UCC27222PWPR: Similar to UCC27221PWPR but with additional features.
2. UCC27223PWPR: Higher current rating compared to UCC27221PWPR.
3. UCC27224PWPR: Lower power consumption and improved thermal performance.

These alternative models offer similar functionality and can be considered based on specific requirements.

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