UCC28061QDRQ1 - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High-performance current mode PWM controller - Designed for offline flyback converters - Provides precise control of power supply systems

Package: SOIC-8

Essence: The UCC28061QDRQ1 is a high-performance current mode PWM controller used in power management applications. It offers precise control and efficient operation for offline flyback converters.

Packaging/Quantity: The UCC28061QDRQ1 is available in a standard SOIC-8 package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 9V to 20V
• Output Voltage Range: 0V to 30V
• Operating Temperature Range: -40°C to 125°C
• Maximum Duty Cycle: 100%
• Frequency Range: 50kHz to 1MHz
• Output Current: Up to 500mA

Detailed Pin Configuration

The UCC28061QDRQ1 has the following pin configuration:

1. VDD: Power supply voltage input
2. COMP: Compensation pin for feedback control loop
3. FB: Feedback pin for output voltage regulation
4. CS: Current sense input pin
5. GND: Ground reference
6. RT/CT: Timing resistor/capacitor connection pin
7. SS/TR: Soft-start/trigger pin
8. OUT: Output pin for driving external MOSFET

Functional Features

• Current Mode Control: The UCC28061QDRQ1 utilizes current mode control to regulate the output voltage accurately.
• Adjustable Frequency: The frequency range can be adjusted from 50kHz to 1MHz, allowing flexibility in design.
• Soft-Start Function: The soft-start feature ensures a controlled startup, preventing excessive inrush current.
• Overcurrent Protection: The IC incorporates overcurrent protection to safeguard the power supply system.

Advantages and Disadvantages

Advantages: - High-performance current mode control for precise regulation - Wide input voltage range allows flexibility in various applications - Adjustable frequency enables optimization for different designs - Integrated overcurrent protection enhances system reliability

Disadvantages: - Limited output current capability (up to 500mA) - Requires external components for complete power supply implementation

Working Principles

The UCC28061QDRQ1 operates based on the current mode control principle. It compares the sensed current with a reference voltage to generate a control signal that regulates the output voltage. By adjusting the duty cycle of the PWM signal, the IC maintains the desired output voltage despite variations in load conditions.

Detailed Application Field Plans

The UCC28061QDRQ1 is commonly used in the following applications:

1. Offline Flyback Converters: The IC is suitable for offline flyback converters used in power supplies for various electronic devices, such as televisions, computer monitors, and home appliances.
2. LED Lighting: The UCC28061QDRQ1 can be employed in LED lighting systems to provide efficient and stable power conversion.
3. Industrial Power Supplies: It finds application in industrial power supplies where precise voltage regulation and high efficiency are crucial.

Detailed and Complete Alternative Models

1. UCC28060QDRQ1: Similar to UCC28061QDRQ1 but with a different pin configuration.
2. UCC28062QDRQ1: Offers additional features like adjustable slope compensation and synchronization capability.
3. UCC28063QDRQ1: Provides enhanced protection features, including overvoltage and undervoltage lockout.

These alternative models offer similar functionality and can be considered as substitutes for the UCC28061QDRQ1 in various applications.

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