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UCC28528DWG4
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UCC28528DWG4

Product Overview

Category

UCC28528DWG4 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in power management applications.

Characteristics

  • High efficiency
  • Low standby power consumption
  • Wide input voltage range
  • Adjustable output voltage
  • Overcurrent protection
  • Thermal shutdown protection

Package

UCC28528DWG4 is available in a small outline SOIC-8 package.

Essence

The essence of UCC28528DWG4 lies in its ability to efficiently regulate and control power in various applications.

Packaging/Quantity

This IC is typically packaged in reels, with each reel containing 2500 units.

Specifications

  • Input Voltage Range: 4.5V to 65V
  • Output Voltage Range: 0.8V to 60V
  • Maximum Output Current: 1A
  • Switching Frequency: 100kHz to 2MHz
  • Operating Temperature Range: -40°C to 125°C

Pin Configuration

The UCC28528DWG4 IC has the following pin configuration:

  1. VIN: Input voltage pin
  2. GND: Ground pin
  3. FB: Feedback pin for output voltage regulation
  4. COMP: Compensation pin for stability control
  5. EN: Enable pin for turning the IC on/off
  6. SS/TR: Soft-start/Tracking pin for controlling startup behavior
  7. VCC: Supply voltage pin
  8. SW: Switching pin for connecting the external power switch

Functional Features

  • Constant voltage (CV) and constant current (CC) operation modes
  • Cycle-by-cycle current limit protection
  • Adjustable soft-start time
  • Frequency synchronization capability
  • Error amplifier with adjustable gain
  • Precision reference voltage

Advantages and Disadvantages

Advantages

  • High efficiency leads to reduced power dissipation
  • Wide input voltage range allows for versatile applications
  • Overcurrent and thermal shutdown protection enhance safety
  • Adjustable output voltage provides flexibility

Disadvantages

  • Limited maximum output current may restrict certain high-power applications
  • Requires external components for complete functionality

Working Principles

UCC28528DWG4 operates as a pulse width modulation (PWM) controller. It regulates the output voltage by adjusting the duty cycle of the power switch connected to the SW pin. The feedback voltage at the FB pin is compared with an internal reference voltage, and the error amplifier adjusts the duty cycle accordingly. This control loop ensures stable and accurate output voltage regulation.

Detailed Application Field Plans

UCC28528DWG4 finds applications in various fields, including but not limited to: 1. Power supplies for industrial equipment 2. Battery charging systems 3. LED lighting drivers 4. Telecom and networking equipment 5. Automotive electronics

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to UCC28528DWG4 are: 1. LM5118 from Texas Instruments 2. LT3845A from Analog Devices 3. MAX668 from Maxim Integrated 4. FAN7380 from Fairchild Semiconductor 5. TPS54332 from Texas Instruments

These alternative models offer similar functionalities and can be suitable replacements depending on specific application requirements.

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Liệt kê 10 câu hỏi và câu trả lời thường gặp liên quan đến ứng dụng UCC28528DWG4 trong giải pháp kỹ thuật

Sure! Here are 10 common questions and answers related to the application of UCC28528DWG4 in technical solutions:

  1. Q: What is UCC28528DWG4? A: UCC28528DWG4 is a high-performance synchronous flyback controller IC designed for isolated power supply applications.

  2. Q: What are the key features of UCC28528DWG4? A: Some key features include wide input voltage range, primary-side regulation, constant voltage/constant current control, and integrated protection features.

  3. Q: What is primary-side regulation (PSR)? A: Primary-side regulation refers to the control of output voltage or current directly on the primary side of the transformer, eliminating the need for an optocoupler or secondary-side feedback circuitry.

  4. Q: What is the advantage of using UCC28528DWG4 in flyback converters? A: The UCC28528DWG4 offers excellent line and load regulation, high efficiency, and reduced component count due to its primary-side regulation capability.

  5. Q: What is the maximum input voltage range supported by UCC28528DWG4? A: The UCC28528DWG4 can support an input voltage range from 4.5V to 65V.

  6. Q: Can UCC28528DWG4 operate in continuous conduction mode (CCM) and discontinuous conduction mode (DCM)? A: Yes, UCC28528DWG4 can operate in both CCM and DCM depending on the design requirements.

  7. Q: Does UCC28528DWG4 have built-in protection features? A: Yes, UCC28528DWG4 includes features like overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown to ensure safe operation.

  8. Q: What is the switching frequency range of UCC28528DWG4? A: The switching frequency of UCC28528DWG4 can be programmed from 50kHz to 1MHz.

  9. Q: Can UCC28528DWG4 support synchronous rectification? A: Yes, UCC28528DWG4 supports synchronous rectification for improved efficiency.

  10. Q: Are there any evaluation boards or reference designs available for UCC28528DWG4? A: Yes, Texas Instruments provides evaluation modules and reference designs that can help in the quick prototyping and implementation of UCC28528DWG4-based solutions.

Please note that these answers are general and may vary depending on specific design requirements and application scenarios.