UCC28517

series introduction

# UCC28517 Product Series Introduction

## 1. Overview
The UCC28517 is a highly advanced and versatile product series designed for power electronics applications. It belongs to a class of integrated circuits (ICs) that play a crucial role in power factor correction (PFC) and switching power supply designs. These ICs are engineered to meet the demanding requirements of modern power systems, offering high efficiency, reliability, and performance.

## 2. Key Features

### 2.1 Power Factor Correction
- **High Power Factor**: The UCC28517 is capable of achieving a very high power factor, typically close to unity (PF ≈ 1). This is essential in power systems as it reduces the reactive power drawn from the electrical grid, leading to more efficient use of electrical energy. By minimizing the reactive power, it helps in reducing energy losses in the distribution network and can also result in cost savings for end - users.
- **Active PFC**: It employs an active power factor correction technique. Unlike passive PFC methods, active PFC can adapt to different input voltage and load conditions, providing a stable and high - quality DC output voltage. This makes it suitable for a wide range of applications where power quality is of utmost importance.

### 2.2 Wide Input Voltage Range
- **Flexibility**: The UCC28517 can operate over a wide input voltage range. This allows it to be used in various power systems around the world, as different regions have different standard input voltages. Whether it is a low - voltage input in some specific industrial applications or a high - voltage input in a commercial power supply, the UCC28517 can handle the input voltage variations effectively.

### 2.3 High Efficiency
- **Reduced Power Losses**: Through advanced circuit design and optimization, the UCC28517 minimizes power losses during the power conversion process. This is achieved by using low - resistance components and efficient control algorithms. High efficiency not only saves energy but also reduces the heat generated within the power supply, which in turn improves the reliability and lifespan of the overall system.

### 2.4 Protection Features
- **Over - Voltage Protection (OVP)**: The UCC28517 is equipped with over - voltage protection circuitry. In case the output voltage exceeds a predefined safe level, the OVP mechanism will quickly shut down the power supply or take corrective actions to prevent damage to the connected load.
- **Over - Current Protection (OCP)**: It also has over - current protection. If the current flowing through the power supply exceeds a certain limit, the OCP feature will activate, protecting the IC and other components from overheating and potential failure.
- **Under - Voltage Lockout (UVLO)**: UVLO ensures that the UCC28517 only operates when the input voltage is within a safe and proper range. If the input voltage drops below the specified threshold, the IC will enter a low - power state or shut down to prevent improper operation.

### 2.5 Programmability
- **Adjustable Parameters**: Many of the operating parameters of the UCC28517 can be programmed. This includes the switching frequency, output voltage, and current limits. This programmability allows designers to customize the power supply according to the specific requirements of their applications, providing greater flexibility in system design.

## 3. Applications

### 3.1 Industrial Power Supplies
- **Motor Drives**: In industrial motor drive systems, the UCC28517 can be used to provide a stable and efficient DC power supply. Its high power factor and protection features ensure reliable operation of the motor drives, reducing energy consumption and minimizing the risk of equipment damage.
- **Industrial Automation Equipment**: For various industrial automation devices such as programmable

Images for reference

20-SOIC 0.295

20-SOIC 0.295

20-DIP,R-PDIP-Txx

Datasheets

• UCC28510-17
• UCC28517 EVM Guide
• PDF 3

Partlist