Description
The UCC28515DW from Texas Instruments is a Power Factor Correction (PFC) IC designed for average current mode control, providing continuous conduction mode operation with high efficiency. This device combines PFC and PWM stages in one chip, offering leading-edge PFC and trailing-edge PWM modulation to reduce ripple. It features built-in sequencing of PFC and PWM turn-on and provides 2-A source and 3-A sink gate drive for both stages.
The UCC28515DW is suitable for a wide range of applications including power supplies for desktop computers, servers, industrial equipment, and telecom systems, as well as LED lighting, automotive, and renewable energy systems that require high efficiency and precise voltage regulation. Its benefits include improved load transient response, accurate power limiting, and zero power detect capabilities.
Features
The UCC28515DW features include:
- Average current mode control for continuous conduction mode operation
- Highly-linear multiplier for near-unity power factor
- Input voltage feedforward implementation
- Improved load transient response
- Accurate power limiting
- Zero power detect
- Peak-current-mode control operation
- 1:1 or 1:2 PFC:PWM frequency options
- Programmable maximum duty cycle
- Programmable soft-start
- Two hysteresis options for differing hold-up time requirements
These features make it suitable for use in power supply applications, LED lighting, automotive, and renewable energy systems where high efficiency and precise voltage regulation are required.
Package
The package type for the UCC28515DW is SOIC-20-300mil, a Standard Outline Integrated Circuit package with a size of 20 pins and a width of 3mm.
Pinout
The UCC28515DW has a package type of SOIC-20-300mil, which means it has 20 pins.
According to Texas Instruments' datasheet, the pin functions are:
- Pins 1-4: PFC Control Inputs
- Pin 5: PFC Feedback Input
- Pins 6-7: PWM Control Inputs
- Pin 8: PWM Feedback Input
- Pins 9-10: Gate Drive Outputs (PFC and PWM)
- Pins 11-12: Power Supply Outputs (VCC and GND)
- Pins 13-14: PFC and PWM Soft-Start Inputs
- Pins 15-16: PFC and PWM Fault Detection Inputs
- Pin 17: Zero Power Detect Input
- Pins 18-19: Reserved for Future Use
- Pin 20: Ground
Please note that this is a concise summary, and you should refer to the datasheet for more detailed information on each pin's function.
Manufacturer
The manufacturer of the UCC28515DW is Texas Instruments (TI). TI is a leading semiconductor component manufacturer that specializes in designing, manufacturing, and distributing innovative electronics solutions for various industries including power management, analog, logic, and embedded processing.
Applications
According to the product information, the application areas of UCC28515DW include:
- Power supply applications for desktop computers, servers, industrial equipment, and telecom systems
- LED lighting, automotive, and renewable energy systems where high efficiency and precise voltage regulation are required
Equivalent
The equivalent products of UCC28515DW are:
- National Semiconductor LM5026
- ON Semiconductors NCP1653
- STMicroelectronics L9944
These power-factor correction (PFC) ICs offer similar features, such as average current mode control and trailing-edge PWM modulation, making them suitable alternatives to the UCC28515DW.
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