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UCC28085DR
Basic Information Overview
- Category: Integrated Circuit (IC)
- Use: Power Management
- Characteristics: High-performance resonant mode controller
- Package: SOIC-8
- Essence: Control and regulation of resonant power converters
- Packaging/Quantity: Tape and Reel, 2500 units per reel
Specifications
- Input Voltage Range: 4.5V to 30V
- Output Voltage Range: 0.9V to 14V
- Operating Temperature Range: -40°C to 125°C
- Switching Frequency: Up to 1MHz
- Maximum Duty Cycle: 50%
- Protection Features: Overvoltage, Undervoltage, Overcurrent, Overtemperature
Detailed Pin Configuration
The UCC28085DR IC has the following pin configuration:
- VDD: Power supply input
- GND: Ground reference
- COMP: Compensation pin for feedback control
- CS: Current sense input
- RT/CLK: Resistor-capacitor timing network or external clock input
- SS/SD: Soft-start or shutdown control input
- FB: Feedback voltage input
- OUT: Output voltage
Functional Features
- High-performance resonant mode controller for efficient power conversion
- Adaptive dead-time control for improved efficiency and reduced switching losses
- Programmable soft-start for controlled startup and reduced inrush current
- Adjustable frequency modulation for optimized performance across different load conditions
- Comprehensive protection features for enhanced system reliability
Advantages and Disadvantages
Advantages: - High efficiency due to resonant mode operation - Wide input and output voltage range - Flexible frequency modulation capability - Comprehensive protection features ensure system reliability
Disadvantages: - Requires external components for complete power converter implementation - Limited maximum duty cycle may restrict certain applications
Working Principles
The UCC28085DR is a resonant mode controller that regulates power converters operating in the resonant mode. It utilizes adaptive dead-time control and frequency modulation techniques to optimize efficiency and minimize switching losses. The IC provides comprehensive protection features such as overvoltage, undervoltage, overcurrent, and overtemperature protection, ensuring safe and reliable operation.
Detailed Application Field Plans
The UCC28085DR is widely used in various power management applications, including but not limited to: - AC/DC power supplies - Battery chargers - LED lighting systems - Solar inverters - Motor drives
Detailed and Complete Alternative Models
- UCC28083DR: Similar functionality with minor differences in specifications
- UCC28086DR: Higher switching frequency capability for specific applications
- UCC28087DR: Enhanced protection features for demanding environments
These alternative models offer similar functionality to the UCC28085DR and can be considered based on specific application requirements.
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Énumérez 10 questions et réponses courantes liées à l'application de UCC28085DR dans les solutions techniques
Sure! Here are 10 common questions and answers related to the application of UCC28085DR in technical solutions:
Q: What is UCC28085DR? A: UCC28085DR is a high-performance, current-mode PWM controller designed for offline and DC-to-DC power supplies.
Q: What are the key features of UCC28085DR? A: Some key features include wide input voltage range, integrated high-voltage startup, precise current limit, and adjustable frequency control.
Q: How can UCC28085DR be used in offline power supplies? A: UCC28085DR can be used as a primary-side controller in flyback, forward, and half-bridge converters for offline power supplies.
Q: Can UCC28085DR be used in DC-to-DC power supplies as well? A: Yes, UCC28085DR can also be used in DC-to-DC power supplies such as buck, boost, and buck-boost converters.
Q: What is the maximum operating frequency of UCC28085DR? A: The maximum operating frequency of UCC28085DR is typically around 500 kHz.
Q: Does UCC28085DR have built-in protection features? A: Yes, UCC28085DR includes various protection features like overvoltage protection, undervoltage lockout, and thermal shutdown.
Q: Can UCC28085DR operate with both fixed and variable frequency modes? A: Yes, UCC28085DR supports both fixed frequency mode and variable frequency mode for flexible design options.
Q: What is the recommended input voltage range for UCC28085DR? A: The recommended input voltage range for UCC28085DR is typically between 9 V and 20 V.
Q: Does UCC28085DR require an external startup resistor? A: No, UCC28085DR has an integrated high-voltage startup circuitry, eliminating the need for an external startup resistor.
Q: Are there any application notes or reference designs available for UCC28085DR? A: Yes, Texas Instruments provides application notes and reference designs that can help in implementing UCC28085DR in various technical solutions.
Please note that the answers provided here are general and may vary depending on specific design requirements and application scenarios. It is always recommended to refer to the datasheet and relevant documentation for accurate information.