Advanced PFC/PWM Combination Controllers 20-SOIC -40 to 105 The UCC28512DWRG4 is a power factor correction (PFC) controller manufactured by Texas Instruments (TI).
### **Specifications:**
- **Topology:** Transition Mode (TM) PFC
- **Input Voltage Range:** 85 VAC to 265 VAC
- **Output Voltage Range:** Adjustable (typically up to 400 VDC)
- **Switching Frequency:** Variable, up to 300 kHz
- **Operating Temperature Range:** -40°C to 125°C
- **Package:** SOIC-16 (DWR)
- **Control Method:** Average Current Mode
- **Start-Up Current:** Low (typically 60 µA)
- **Supply Voltage (VCC):** 10 V to 18 V
- **Peak Gate Drive Current:** ±1.5 A
### **Descriptions:**
The UCC28512DWRG4 is a high-performance PFC controller designed for AC-DC power supplies. It operates in transition mode (boundary conduction mode) to improve efficiency and reduce switching losses. It features an average current mode control loop for precise power factor correction.
### **Features:**
- **Power Factor Correction (PFC):** Ensures near-unity power factor
- **Low Distortion:** Minimizes input current harmonics
- **Overvoltage Protection (OVP):** Safeguards against excessive output voltage
- **Undervoltage Lockout (UVLO):** Ensures proper startup and shutdown
- **Soft-Start:** Reduces inrush current
- **Programmable Switching Frequency:** Adjustable based on application needs
- **Low Standby Power Consumption:** Enhances efficiency in light-load conditions
This IC is commonly used in power supplies for industrial, consumer, and computing applications requiring compliance with energy efficiency standards.
