UCC28528
Power factor correction and PWM controllers with TEM modulation
Manufacturer： ['rochester', 'analog-devices', 'ti']
series introduction
# UCC28528 Product Series Introduction
## 1. Overview
The UCC28528 is a highly advanced and versatile integrated circuit (IC) product series designed for power factor correction (PFC) applications. Power factor correction is a crucial aspect in modern power systems as it helps to improve the efficiency of electrical equipment, reduce energy consumption, and comply with various international power quality standards. The UCC28528 series offers a comprehensive solution for designers looking to implement high - performance PFC circuits in a wide range of applications.
## 2. Key Features
### 2.1 High - Performance PFC Control
- **Average Current Mode Control**: The UCC28528 utilizes average current mode control, which provides excellent line and load regulation. This control method ensures that the input current waveform closely follows the input voltage waveform, resulting in a high power factor (typically greater than 0.99). By maintaining a near - unity power factor, the system can draw power from the mains more efficiently, reducing reactive power and minimizing losses in the power distribution network.
- **Fast Transient Response**: It is capable of quickly responding to changes in the input voltage or load conditions. This fast transient response helps to maintain a stable output voltage and current, even during sudden load variations. For example, in applications where the load can change rapidly, such as in some industrial equipment or power supplies for servers, the UCC28528 can adjust the PFC operation in real - time to ensure continuous and reliable power delivery.
### 2.2 Wide Input Voltage Range
The UCC28528 series can operate over a wide input voltage range, typically from 85V to 265V AC. This wide range makes it suitable for use in different regions around the world, where the mains voltage can vary significantly. Whether it is a low - voltage input in some residential areas or a higher - voltage input in industrial settings, the UCC28528 can adapt and provide consistent PFC performance.
### 2.3 Comprehensive Protection Features
- **Over - Voltage Protection (OVP)**: The IC is equipped with over - voltage protection to safeguard the system from excessive input or output voltages. In case the voltage exceeds a predefined threshold, the UCC28528 will take appropriate action, such as reducing the power output or shutting down the circuit to prevent damage to the components.
- **Over - Current Protection (OCP)**: Over - current protection is another important feature. It monitors the current flowing through the circuit and limits it to a safe level. If the current exceeds the set limit, the UCC28528 will adjust the PFC operation to prevent overheating and component failure.
- **Under - Voltage Lockout (UVLO)**: UVLO ensures that the IC only starts operating when the input voltage is within a safe and stable range. This helps to prevent the circuit from operating under low - voltage conditions, which could lead to unstable operation or damage to the components.
### 2.4 Low Standby Power Consumption
In today's energy - conscious world, low standby power consumption is a critical requirement. The UCC28528 series is designed to consume very low power in standby mode. This is particularly important for applications such as consumer electronics, where the device may be in standby for long periods of time. By reducing standby power consumption, the UCC28528 helps to meet energy efficiency standards and reduce overall energy costs.
## 3. Applications
### 3.1 Switch - Mode Power Supplies (SMPS)
- In SMPS, the UCC28528 can be used to improve the power factor of the input stage. This is essential for high - power SMPS, such as those used in servers,
Images for reference
20-SOIC 0.295
20-SOIC 0.295
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