UCC3895PWTRG4

Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High-performance power factor correction (PFC) controller - Designed for use in AC/DC power supplies - Provides high efficiency and low total harmonic distortion (THD) - Enables compliance with international power quality standards

Package: TSSOP-16

Essence: The UCC3895PWTRG4 is a highly efficient PFC controller that ensures optimal power factor correction in AC/DC power supplies. It offers improved power quality and helps meet regulatory standards.

Packaging/Quantity: The UCC3895PWTRG4 is available in a TSSOP-16 package. It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 85V to 265V AC
• Output Voltage Range: Adjustable
• Maximum Output Power: 300W
• Operating Temperature Range: -40°C to +125°C
• Switching Frequency: 100kHz to 500kHz
• Control Method: Average Current Mode

Detailed Pin Configuration

The UCC3895PWTRG4 has the following pin configuration:

1. VSENSE: Current sense input
2. CSRTN: Current sense return
3. RT/CT: Timing resistor/capacitor connection
4. COMP: Error amplifier output
5. VREF: Reference voltage input
6. VFB: Feedback voltage input
7. GND: Ground
8. VCC: Supply voltage input
9. UVLO: Undervoltage lockout
10. SYNC: Synchronization input
11. ISENSE: Current sense input
12. ISRTN: Current sense return
13. VSENSE: Current sense input
14. CSRTN: Current sense return
15. RT/CT: Timing resistor/capacitor connection
16. COMP: Error amplifier output

Functional Features

• High power factor correction (PFC) efficiency
• Low total harmonic distortion (THD)
• Wide input voltage range for universal AC mains compatibility
• Adaptive control for improved performance under varying load conditions
• Overvoltage and undervoltage protection
• Soft-start functionality to limit inrush current

Advantages

• Ensures compliance with international power quality standards
• Improves power factor and reduces THD
• Enhances overall system efficiency
• Provides reliable and stable power supply
• Enables compact and cost-effective power supply designs

Disadvantages

• Requires careful design and layout considerations for optimal performance
• May require additional external components for specific applications
• Limited output power compared to higher-rated PFC controllers

Working Principles

The UCC3895PWTRG4 operates on the average current mode control method. It regulates the input current to achieve high power factor correction and low THD. By dynamically adjusting the switching frequency and duty cycle, it maintains a constant output voltage while minimizing power losses.

The controller continuously monitors the input and output voltages, as well as the current flowing through the power stage. It compares these values with the desired reference levels and adjusts the control signals accordingly. This feedback loop ensures accurate regulation and efficient power transfer.

Detailed Application Field Plans

The UCC3895PWTRG4 is widely used in various applications, including:

1. AC/DC power supplies for consumer electronics
2. LED lighting systems
3. Industrial motor drives
4. Renewable energy systems
5. Electric vehicle charging stations

Its high-performance characteristics make it suitable for demanding applications that require efficient power conversion and compliance with power quality standards.

Alternative Models

1. UCC28070PW: High-performance PFC controller with similar specifications and features.
2. UCC28061PW: Cost-effective PFC controller for lower power applications.
3. UCC28019APW: PFC controller with integrated power factor correction and PWM control.

These alternative models offer different trade-offs in terms of cost, performance, and integration level, allowing designers to choose the most suitable option for their specific requirements.

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