Overview
The UCC2818ADR is a Continuous Conduction Mode (CCM) Power Factor Correction (PFC) controller manufactured by Texas Instruments. This device is designed to operate within a wide range of switching frequencies, from 6 kHz to 220 kHz, making it versatile for various power supply applications. The UCC2818ADR features a BiCMOS technology and is packaged in a 16-pin SOIC (D) package, ensuring a compact and efficient design. It operates over a temperature range of -40°C to 85°C, making it suitable for a variety of environmental conditions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Switching Frequency Range | 6 kHz to 220 kHz | |
| UVLO (Under-Voltage Lockout) | 10.5V/10V | |
| Operating Temperature Range | -40°C to 85°C | |
| Package Type | SOIC (D) 16 pins | |
| ICC Pre-start Current | 75 µA | |
| ICC Standby Current | 1.8 to 3.47 mA | |
| ICC Operating Current | 5.8 to 7.5 mA | |
| VSENSE Input Bias Current | 20 to 250 nA |
Key Features
- Wide programmable switching frequency range (6 kHz to 220 kHz) to support both MOSFET and IGBT switches.
- Integrated gate drive output with a peak current capability, eliminating the need for external buffer circuits.
- Low-distortion wave shaping of the input current using average current mode control without input line sensing.
- Trimmed internal current loop regulation circuits for low current distortion.
- Enhanced Dynamic Response (EDR) for rapid recovery from line or load steps.
- Two-level Output Over-Voltage Protection (OVP) for robust voltage regulation.
Applications
- Universal AC input systems in the 100-W to few-kW range.
- Industrial power supplies, including DIN rail applications.
- Flat panel displays such as PDP, LCD, and LED TVs.
- Refrigerators and other high-power consumer appliances.
Q & A
- What is the switching frequency range of the UCC2818ADR?
The switching frequency range of the UCC2818ADR is from 6 kHz to 220 kHz. - What is the operating temperature range of the UCC2818ADR?
The operating temperature range is -40°C to 85°C. - What type of package does the UCC2818ADR come in?
The UCC2818ADR is packaged in a 16-pin SOIC (D) package. - What is the UVLO threshold for the UCC2818ADR?
The UVLO threshold is 10.5V/10V. - Does the UCC2818ADR support both MOSFET and IGBT switches?
Yes, it supports both MOSFET and IGBT switches due to its programmable switching frequency range. - What is the purpose of the Enhanced Dynamic Response (EDR) feature?
The EDR feature rapidly returns the output voltage to its normal regulation level when a system line or load step occurs. - How does the UCC2818ADR achieve low current distortion?
The UCC2818ADR achieves low current distortion through trimmed internal current loop regulation circuits and average current mode control. - What kind of over-voltage protection does the UCC2818ADR offer?
The UCC2818ADR offers two-level Output Over-Voltage Protection (OVP). - In what types of applications is the UCC2818ADR commonly used?
The UCC2818ADR is commonly used in universal AC input systems, industrial power supplies, flat panel displays, and high-power consumer appliances. - Where can I find detailed specifications and documentation for the UCC2818ADR?
Detailed specifications and documentation can be found on the Texas Instruments website and in the datasheet available for download.
