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UCC28085PWR
Overview
Category: Integrated Circuit (IC)
Use: Power Management
Characteristics: - High-performance current mode PWM controller - Designed for offline power supplies - Provides precise control of power conversion systems
Package: TSSOP-16
Essence: The UCC28085PWR is a high-performance current mode PWM controller used in offline power supplies. It offers precise control of power conversion systems, making it suitable for various applications.
Packaging/Quantity: The UCC28085PWR is available in a TSSOP-16 package and is typically sold in reels of 2500 units.
Specifications
The UCC28085PWR has the following specifications:
- Input Voltage Range: 8V to 20V
- Output Voltage Range: 0V to 5V
- Operating Temperature Range: -40°C to 125°C
- Maximum Duty Cycle: 100%
- Switching Frequency: 50kHz to 1MHz
- Output Current: 1A
Pin Configuration
The UCC28085PWR has a TSSOP-16 package with the following pin configuration:
- VREF
- COMP
- FB
- CS
- SS/TR/UVLO
- RT/CT
- GND
- VDD
- SYNC
- NC
- NC
- NC
- NC
- NC
- NC
- HV
Functional Features
The UCC28085PWR offers the following functional features:
- Current Mode Control: Provides stable and reliable operation by regulating the output current.
- Soft Start/Shutdown: Allows gradual startup and shutdown of the power supply, reducing stress on components.
- Overvoltage Protection: Safeguards the system by detecting and preventing excessive output voltage.
- Undervoltage Lockout: Ensures proper operation by disabling the power supply when the input voltage falls below a certain threshold.
- Frequency Modulation: Enables frequency modulation for improved efficiency and reduced electromagnetic interference.
Advantages and Disadvantages
Advantages: - Precise control of power conversion systems - High-performance current mode PWM controller - Wide input voltage range - Comprehensive protection features - Frequency modulation capability
Disadvantages: - Limited output current (1A) - Requires external components for complete power supply implementation
Working Principles
The UCC28085PWR operates based on the current mode control principle. It regulates the output current by comparing it with a reference voltage and adjusting the duty cycle of the PWM signal accordingly. This ensures stable and reliable operation of the power conversion system.
Application Field Plans
The UCC28085PWR is widely used in various applications, including:
- Switching Power Supplies: Used in offline power supplies to regulate and convert electrical power efficiently.
- LED Lighting: Provides precise control and dimming capabilities for LED lighting systems.
- Industrial Automation: Used in power management circuits for industrial automation equipment.
- Telecommunications: Enables efficient power conversion in telecommunications infrastructure.
Alternative Models
For alternative options, consider the following models:
- UCC28084PWR: Similar to UCC28085PWR but with a lower maximum duty cycle.
- UCC28086PWR: Similar to UCC28085PWR but with a higher output current capability.
- UCC28087PWR: Similar to UCC28085PWR but with additional protection features.
These alternative models offer similar functionality and can be considered based on specific requirements.
In conclusion, the UCC28085PWR is a high-performance current mode PWM controller designed for offline power supplies. It provides precise control of power conversion systems and offers various protection features. With its wide range of applications and alternative models, it is a versatile choice for power management needs.
Enumerați 10 întrebări și răspunsuri comune legate de aplicarea lui UCC28085PWR în soluțiile tehnice
Sure! Here are 10 common questions and answers related to the application of UCC28085PWR in technical solutions:
Q: What is UCC28085PWR? A: UCC28085PWR is a pulse width modulation (PWM) controller IC used for controlling power converters in various applications.
Q: What are the key features of UCC28085PWR? A: Some key features include integrated high-voltage startup, cycle-by-cycle current limiting, adjustable frequency, and soft-start capability.
Q: What is the maximum input voltage supported by UCC28085PWR? A: The maximum input voltage supported by UCC28085PWR is typically around 30V.
Q: Can UCC28085PWR be used in both buck and boost converter topologies? A: Yes, UCC28085PWR can be used in both buck and boost converter topologies, as well as in flyback and forward converter configurations.
Q: How does UCC28085PWR achieve cycle-by-cycle current limiting? A: UCC28085PWR achieves cycle-by-cycle current limiting by monitoring the voltage across the sense resistor and adjusting the duty cycle accordingly.
Q: What is the typical switching frequency range of UCC28085PWR? A: The typical switching frequency range of UCC28085PWR is between 50kHz and 1MHz.
Q: Can UCC28085PWR be synchronized with an external clock source? A: Yes, UCC28085PWR can be synchronized with an external clock source using the SYNC pin.
Q: Does UCC28085PWR have built-in protection features? A: Yes, UCC28085PWR has built-in protection features such as overvoltage protection, undervoltage lockout, and thermal shutdown.
Q: What is the maximum output current that UCC28085PWR can handle? A: The maximum output current that UCC28085PWR can handle depends on the external components used in the power converter design.
Q: Are there any application notes or reference designs available for UCC28085PWR? A: Yes, Texas Instruments provides application notes and reference designs that can help in implementing UCC28085PWR in various technical solutions.
Please note that the answers provided here are general and may vary depending on specific design requirements and conditions. It is always recommended to refer to the datasheet and relevant documentation for accurate information.