1 The UC385T-1 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:**
- **Input Voltage Range:** Designed for universal AC line input (85VAC to 265VAC).
- **Output Voltage Regulation:** Supports high-voltage DC output (typically 400V).
- **Switching Frequency:** Adjustable, typically up to 250 kHz.
- **Operating Temperature Range:** -40°C to +85°C.
- **Package Type:** TO-220 (through-hole).
- **Control Method:** Average current mode control for high power factor.
### **Descriptions:**
- The UC385T-1 is a high-performance PFC controller designed for AC-DC power supplies.
- It ensures near-unity power factor by shaping the input current waveform to match the input voltage.
- Suitable for applications like power supplies, LED drivers, and industrial systems requiring compliance with power quality standards.
### **Features:**
- **Power Factor Correction (PFC):** Achieves >0.99 power factor.
- **Average Current Mode Control:** Ensures low distortion input current.
- **Programmable Oscillator:** Allows frequency adjustment via external components.
- **Overvoltage Protection (OVP):** Safeguards against output overvoltage conditions.
- **Undervoltage Lockout (UVLO):** Ensures proper startup and shutdown.
- **Soft-Start Function:** Reduces inrush current during startup.
- **High Drive Output:** Capable of driving external MOSFETs or IGBTs.
This information is strictly based on the manufacturer's specifications for the UC385T-1.
