Texas Instruments
Bild kan vara representation.
Se specifikationer för produktinformation.
UCC2817DTR
Visa detalj Datablad

UCC2817DTR

Product Overview

Category

UCC2817DTR belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in power management applications.

Characteristics

  • UCC2817DTR is a high-performance pulse width modulation (PWM) controller.
  • It operates at a fixed frequency and regulates the output voltage of power converters.
  • This IC offers excellent line and load regulation, making it suitable for various power supply designs.

Package

UCC2817DTR is available in a small outline package (SOP) with eight pins.

Essence

The essence of UCC2817DTR lies in its ability to efficiently control the power conversion process, ensuring stable and reliable output voltages.

Packaging/Quantity

UCC2817DTR is typically packaged in reels containing 2500 units.

Specifications

  • Input Voltage Range: 10V to 30V
  • Output Voltage Range: 0V to 5V
  • Operating Temperature Range: -40°C to 85°C
  • Maximum Duty Cycle: 100%
  • Switching Frequency: 200kHz

Detailed Pin Configuration

  1. COMP: Compensation pin for feedback loop control.
  2. FB: Feedback pin for regulating the output voltage.
  3. CS: Current sense pin for monitoring the current flow.
  4. GND: Ground reference pin.
  5. VREF: Reference voltage pin for setting the desired output voltage.
  6. RT/CT: Timing components connection pins.
  7. OUT: Output pin for connecting to the power stage.
  8. VCC: Power supply input pin.

Functional Features

  • Precise voltage regulation through feedback loop control.
  • Fixed-frequency operation for predictable performance.
  • Overcurrent protection to safeguard the power converter.
  • Soft-start functionality to prevent excessive inrush current during startup.
  • Error amplifier for accurate voltage comparison and control.

Advantages and Disadvantages

Advantages

  • Excellent line and load regulation.
  • High-performance PWM control.
  • Wide input voltage range.
  • Compact SOP package.
  • Overcurrent protection.

Disadvantages

  • Limited output voltage range (0V to 5V).
  • Requires external timing components for frequency control.

Working Principles

UCC2817DTR operates based on the principle of pulse width modulation. 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 PWM waveform. By adjusting the duty cycle, the IC regulates the power converter's output voltage.

Detailed Application Field Plans

UCC2817DTR finds applications in various power management systems, including: 1. Switching power supplies 2. DC-DC converters 3. Battery chargers 4. LED drivers 5. Industrial automation equipment

Detailed and Complete Alternative Models

  1. UCC2817ADR: Similar specifications but available in a different package (SOIC).
  2. UCC3817DTR: Enhanced version with additional features like adjustable switching frequency.
  3. UC3842AN: Alternative IC with similar functionality but different pin configuration.

In conclusion, UCC2817DTR is a high-performance PWM controller used in power management applications. Its precise voltage regulation, fixed-frequency operation, and compact package make it suitable for various designs. However, it has limitations in terms of output voltage range and requires external timing components. Nonetheless, it offers advantages such as excellent line and load regulation, wide input voltage range, and overcurrent protection.

Lista 10 Vanliga frågor och svar relaterade till tillämpningen av UCC2817DTR i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of UCC2817DTR in technical solutions:

  1. Q: What is UCC2817DTR? A: UCC2817DTR is a pulse width modulation (PWM) controller IC used for controlling power supply circuits.

  2. Q: What are the key features of UCC2817DTR? A: Some key features of UCC2817DTR include adjustable frequency, soft-start capability, cycle-by-cycle current limiting, and overvoltage protection.

  3. Q: How does UCC2817DTR help in power supply applications? A: UCC2817DTR helps regulate the output voltage and current of power supplies by adjusting the duty cycle of the PWM signal.

  4. Q: Can UCC2817DTR be used in both AC-DC and DC-DC power supply designs? A: Yes, UCC2817DTR can be used in both AC-DC and DC-DC power supply designs, making it versatile for various applications.

  5. Q: What is the maximum operating frequency of UCC2817DTR? A: The maximum operating frequency of UCC2817DTR is typically around 1 MHz.

  6. Q: Does UCC2817DTR have any protection features? A: Yes, UCC2817DTR has built-in protection features such as overvoltage protection and cycle-by-cycle current limiting.

  7. Q: Can UCC2817DTR operate with wide input voltage ranges? A: Yes, UCC2817DTR can operate with wide input voltage ranges, making it suitable for different power supply applications.

  8. Q: Is UCC2817DTR compatible with low-power applications? A: Yes, UCC2817DTR is compatible with low-power applications as it has a low quiescent current and standby power consumption.

  9. Q: Are there any application notes or reference designs available for UCC2817DTR? A: Yes, Texas Instruments provides application notes and reference designs that can help in implementing UCC2817DTR in various technical solutions.

  10. Q: Where can I find more information about UCC2817DTR? A: You can find more information about UCC2817DTR in the datasheet provided by the manufacturer or by visiting the official website of Texas Instruments.