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UCC2817APWG4
Overview
Category: Integrated Circuit (IC)
Use: Voltage Mode PWM Controller
Characteristics: - High-performance voltage mode controller - Designed for use in switch-mode power supplies - Provides precise regulation of output voltage and current - Offers protection features for enhanced reliability
Package: PWG (PowerPAD™ SOIC-20)
Essence: UCC2817APWG4 is a voltage mode PWM controller that is widely used in switch-mode power supplies to regulate the output voltage and current with high precision. It offers various protection features to ensure reliable operation.
Packaging/Quantity: UCC2817APWG4 is available in a PowerPAD™ SOIC-20 package. The quantity may vary depending on the supplier.
Specifications
- Input Voltage Range: 8V to 18V
- Output Voltage Range: 0V to 5V
- Operating Temperature Range: -40°C to +85°C
- Switching Frequency Range: 50kHz to 1MHz
- Maximum Duty Cycle: 100%
- Output Current: Up to 500mA
Pin Configuration
UCC2817APWG4 has the following pin configuration:
- COMP: Compensation Pin
- CS: Current Sense Pin
- FB: Feedback Pin
- RT/CT: Timing Resistor/Capacitor Pin
- VREF: Reference Voltage Pin
- GND: Ground Pin
- VCC: Supply Voltage Pin
- SYNC: Synchronization Pin
- SS/TR: Soft Start/Tracking Pin
- UVLO: Undervoltage Lockout Pin
- EN/UV: Enable/Undervoltage Pin
- NC: No Connection
- NC: No Connection
- NC: No Connection
- NC: No Connection
- NC: No Connection
- NC: No Connection
- NC: No Connection
- NC: No Connection
- NC: No Connection
Functional Features
- Voltage Mode Control: UCC2817APWG4 utilizes voltage mode control to regulate the output voltage and current of switch-mode power supplies.
- Precise Regulation: It provides precise regulation of the output voltage and current, ensuring stable and reliable operation.
- Protection Features: The controller offers various protection features such as overvoltage protection (OVP), undervoltage lockout (UVLO), and thermal shutdown for enhanced reliability and safety.
- Soft Start/Tracking: The soft start feature allows gradual startup of the power supply, reducing stress on components. The tracking feature enables synchronization with other power supplies.
- Synchronization: The synchronization pin allows synchronization with an external clock source, enabling multiple power supplies to operate in phase.
Advantages and Disadvantages
Advantages: - Precise regulation of output voltage and current - Offers protection features for enhanced reliability - Soft start and tracking features reduce stress on components - Synchronization capability for multiple power supplies
Disadvantages: - Limited output current capacity (up to 500mA) - Requires additional external components for complete power supply implementation
Working Principles
UCC2817APWG4 operates based on the voltage mode control technique. It compares the feedback voltage from the output with a reference voltage to generate an error signal. This error signal is then amplified and used to control the duty cycle of the power switch, which regulates the output voltage and current. The controller continuously monitors the output and adjusts the duty cycle to maintain the desired output voltage.
Application Field Plans
UCC2817APWG4 is commonly used in various applications, including: - Switch-mode power supplies - DC-DC converters - LED drivers - Battery chargers - Industrial power systems
Alternative Models
Some alternative models that can be considered as alternatives to UCC2817APWG4 are: - UCC2817ADW - UCC3817APW - UC3842AN - TL494CN - SG3525AN
These models offer similar functionality and can be used as replacements depending on specific requirements.
Note: The content provided above is for illustrative purposes only. Please refer to the manufacturer's datasheet for accurate and up-to-date information.
Wymień 10 typowych pytań i odpowiedzi związanych z zastosowaniem UCC2817APWG4 w rozwiązaniach technicznych
Sure! Here are 10 common questions and answers related to the application of UCC2817APWG4 in technical solutions:
Q: What is UCC2817APWG4? A: UCC2817APWG4 is a pulse width modulation (PWM) controller IC used for controlling power converters in various applications.
Q: What are the key features of UCC2817APWG4? A: Some key features include adjustable frequency, soft-start capability, cycle-by-cycle current limiting, and overvoltage protection.
Q: How does UCC2817APWG4 help in power converter designs? A: UCC2817APWG4 provides precise control over the switching frequency and duty cycle, ensuring efficient power conversion and regulation.
Q: Can UCC2817APWG4 be used in both buck and boost converter designs? A: Yes, UCC2817APWG4 can be used in both buck and boost converter designs, as well as in flyback and forward converter topologies.
Q: What is the maximum operating voltage range of UCC2817APWG4? A: The maximum operating voltage range is typically between 8V and 35V.
Q: Does UCC2817APWG4 have built-in protection features? A: Yes, UCC2817APWG4 has built-in protection features such as overvoltage protection, undervoltage lockout, and thermal shutdown.
Q: Can UCC2817APWG4 operate at high temperatures? A: Yes, UCC2817APWG4 is designed to operate reliably at high temperatures, typically up to 125°C.
Q: Is UCC2817APWG4 suitable for battery charging applications? A: Yes, UCC2817APWG4 can be used in battery charging applications due to its adjustable frequency and soft-start capabilities.
Q: Can UCC2817APWG4 be used in automotive applications? A: Yes, UCC2817APWG4 is suitable for automotive applications as it meets the necessary automotive standards and has a wide operating temperature range.
Q: Are there any application notes or reference designs available for UCC2817APWG4? A: Yes, Texas Instruments provides application notes and reference designs that help users implement UCC2817APWG4 in various power converter applications.
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 technical documentation for accurate information.