UC2872DWTRG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High-performance power factor correction controller
• Package: SOIC-16
• Essence: Efficiently manages power factor correction in electronic devices
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 85V to 265V AC
• Output Voltage: Adjustable
• Operating Frequency: 100kHz to 500kHz
• Maximum Duty Cycle: 98%
• Protection Features: Overvoltage, Overcurrent, Overtemperature

Detailed Pin Configuration

1. VCC: Power supply voltage input
2. COMP: Compensation pin for feedback control loop
3. FB: Feedback pin for output voltage regulation
4. RT/CT: Timing components for oscillator frequency adjustment
5. CS: Current sense pin for overcurrent protection
6. GND: Ground reference
7. INV: Inverting input of error amplifier
8. VREF: Reference voltage output
9. OSC: Oscillator timing capacitor connection
10. SS: Soft-start capacitor connection
11. UVLO: Undervoltage lockout threshold setting
12. DTC: Duty cycle control pin
13. CT: Oscillator timing resistor connection
14. OUT: Output voltage
15. SYNC: Synchronization input for multiple ICs
16. HV: High-voltage startup bias supply

Functional Features

• High-performance power factor correction (PFC) controller
• Enables efficient conversion of AC input to regulated DC output
• Provides high power factor and low total harmonic distortion
• Incorporates advanced control algorithms for improved efficiency
• Offers comprehensive protection features for reliable operation
• Supports synchronization of multiple ICs for parallel operation

Advantages and Disadvantages

Advantages

• High-performance PFC controller for efficient power conversion
• Wide input voltage range for versatile applications
• Adjustable output voltage for flexibility
• Comprehensive protection features ensure safe operation
• Synchronization capability allows parallel operation

Disadvantages

• Requires external timing components for frequency adjustment
• Limited to SOIC-16 package option

Working Principles

The UC2872DWTRG4 is a high-performance power factor correction (PFC) controller designed to efficiently convert AC input to regulated DC output. It utilizes advanced control algorithms to achieve high power factor and low total harmonic distortion, ensuring compliance with power quality standards.

The IC operates by continuously monitoring the input voltage and current waveforms, adjusting the duty cycle of the output waveform to maintain a near-unity power factor. By actively controlling the power flow, it minimizes reactive power consumption and maximizes the utilization of the AC input.

The UC2872DWTRG4 incorporates various protection features such as overvoltage, overcurrent, and overtemperature protection, ensuring safe and reliable operation in different operating conditions.

Detailed Application Field Plans

The UC2872DWTRG4 is widely used in various power management applications that require efficient power factor correction. Some of the common application fields include:

1. Power Supplies: The IC is commonly employed in switch-mode power supplies (SMPS) to improve power factor and reduce harmonic distortion, resulting in more efficient and reliable power delivery.

2. LED Lighting: With the increasing adoption of LED lighting systems, the UC2872DWTRG4 finds its application in LED drivers to enhance power factor and meet regulatory requirements.

3. Industrial Equipment: Power factor correction is crucial in industrial equipment to minimize energy losses and comply with power quality standards. The IC is utilized in motor drives, welding machines, and other industrial applications.

4. Consumer Electronics: The IC can be found in various consumer electronic devices such as televisions, audio systems, and computer power supplies to improve power factor and reduce energy consumption.

Detailed and Complete Alternative Models

1. UC3854DW: Similar high-performance PFC controller with adjustable output voltage and comprehensive protection features. Available in SOIC-16 package.
2. UC28025DW: Power factor correction controller with integrated power MOSFET driver. Offers adjustable output voltage and synchronization capability. Packaged in SOIC-16.
3. UCC28070DW: Advanced PFC controller with digital control capabilities. Provides enhanced efficiency and flexibility in power factor correction applications. Comes in SOIC-16 package.

These alternative models offer similar functionality and features to the UC2872DWTRG4, providing options for different design requirements and preferences.

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