High Power-Factor Preregulator The UC3852N is a power factor correction (PFC) controller manufactured by Texas Instruments (TI). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Texas Instruments (TI)
- **Type:** Power Factor Correction (PFC) Controller
- **Package:** PDIP-16 (Plastic Dual In-Line Package)
- **Operating Temperature Range:** -40°C to +85°C
- **Input Voltage Range:** Typically operates with high-voltage inputs for PFC applications
- **Switching Frequency:** Adjustable, optimized for power factor correction
- **Control Method:** Average current mode control for improved power factor
### **Descriptions:**
The UC3852N is designed to provide power factor correction in AC-DC power supplies. It ensures that the input current waveform follows the input voltage waveform, improving efficiency and reducing harmonic distortion. It is commonly used in offline power supplies, lighting systems, and industrial applications requiring compliance with power quality standards.
### **Features:**
- **Power Factor Correction:** Optimizes power factor to near unity (typically >0.99)
- **Average Current Mode Control:** Ensures low harmonic distortion
- **Overvoltage Protection:** Includes protection features to prevent damage
- **Programmable Oscillator:** Allows adjustment of switching frequency
- **Soft-Start Function:** Reduces inrush current during startup
- **Low Startup Current:** Enhances efficiency in standby mode
- **Wide Operating Temperature Range:** Suitable for industrial environments
This information is based solely on the technical specifications and features provided in Ic-phoenix technical data files for the UC3852N by Texas Instruments.
