Current Mode Push-Pull PWM With Programmable Slope Compensation The UCC28084PW is a power factor correction (PFC) controller manufactured by Texas Instruments (TI). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Texas Instruments (TI)
- **Part Number:** UCC28084PW
- **Type:** Power Factor Correction (PFC) Controller
- **Package:** TSSOP-20
- **Operating Temperature Range:** -40°C to +105°C
- **Input Voltage Range:** 9V to 21V (VCC)
- **Switching Frequency:** Adjustable (typically up to 300 kHz)
- **Control Method:** Average Current Mode Control
- **Maximum Duty Cycle:** 95%
- **Current Sense Input Range:** -0.3V to +5V
- **Reference Voltage (VREF):** 5V ±1%
- **Start-Up Current:** Typically 50 µA
### **Descriptions:**
The UCC28084PW is a high-performance, continuous-conduction-mode (CCM) PFC controller designed for AC/DC power supplies. It features average current mode control for improved power factor correction and low harmonic distortion. The device is optimized for high-efficiency applications and includes protection features such as overvoltage protection (OVP), open-loop detection, and soft-start.
### **Features:**
- **Average Current Mode Control:** Ensures low harmonic distortion and high power factor.
- **Low Start-Up and Operating Current:** Enhances efficiency.
- **Programmable Switching Frequency:** Allows optimization for different applications.
- **Soft-Start Function:** Reduces inrush current during startup.
- **Overvoltage Protection (OVP):** Safeguards against output voltage spikes.
- **Open-Loop Detection:** Protects the system during fault conditions.
- **Peak Current Limiting:** Prevents excessive current flow.
- **Wide Operating Voltage Range (9V to 21V):** Supports various power supply designs.
- **TSSOP-20 Package:** Compact and suitable for space-constrained applications.
This information is based on the manufacturer's datasheet and technical documentation.
