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UCC2817APWR
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UCC2817APWR

Basic Information Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High-performance PWM Controller
  • Package: TSSOP-14
  • Essence: Regulates and controls power delivery in various applications
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Input Voltage Range: 8V to 35V
  • Output Voltage Range: 0.8V to 30V
  • Maximum Duty Cycle: 100%
  • Operating Temperature Range: -40°C to 85°C
  • Switching Frequency: Adjustable up to 1MHz
  • Output Current: Up to 500mA
  • Protection Features: Overvoltage, Undervoltage, Overcurrent, Overtemperature

Detailed Pin Configuration

  1. COMP: Compensation pin for loop stability
  2. FB: Feedback pin for output voltage regulation
  3. CS: Current sense pin for current limit protection
  4. GND: Ground reference
  5. VREF: Reference voltage output
  6. RT/CT: Timing components for setting switching frequency and soft-start time
  7. SS/TR: Soft-start and shutdown control pin
  8. VCC: Supply voltage input
  9. SYNC: Synchronization input for multiple ICs
  10. DRVH: High-side gate driver output
  11. DRVL: Low-side gate driver output
  12. NC: No connection
  13. UVLO: Undervoltage lockout threshold pin
  14. OVLO: Overvoltage lockout threshold pin

Functional Features

  • High-performance pulse-width modulation (PWM) controller
  • Precise voltage regulation with adjustable output voltage range
  • Wide input voltage range for versatile applications
  • Adjustable switching frequency for optimal performance
  • Comprehensive protection features for enhanced reliability
  • Soft-start and shutdown control for smooth operation
  • Synchronization capability for multi-phase power systems

Advantages and Disadvantages

Advantages

  • High-performance and reliable power management solution
  • Flexible output voltage range for various applications
  • Wide input voltage range allows compatibility with different power sources
  • Adjustable switching frequency enables optimization for specific requirements
  • Comprehensive protection features ensure system safety and longevity
  • Soft-start and shutdown control enhance system stability
  • Synchronization capability facilitates multi-phase power system design

Disadvantages

  • Limited maximum output current of 500mA may not be suitable for high-power applications
  • TSSOP-14 package may require careful handling during assembly

Working Principles

The UCC2817APWR is a high-performance PWM controller that regulates and controls power delivery in various applications. It operates by comparing the feedback voltage (FB) with a reference voltage (VREF) to generate a precise error signal. This error signal is then used to adjust the duty cycle of the PWM signal, which controls the power delivered to the load.

The COMP pin is used to stabilize the control loop by connecting an external compensation network. The CS pin senses the current flowing through the power switch and provides overcurrent protection. The RT/CT pins allow the user to set the switching frequency and soft-start time using external timing components.

The UCC2817APWR also incorporates comprehensive protection features such as undervoltage lockout (UVLO), overvoltage lockout (OVLO), and overtemperature protection. These features safeguard the system from potential faults and ensure reliable operation.

Detailed Application Field Plans

The UCC2817APWR is widely used in various power management applications, including:

  1. Switching Power Supplies: Used in AC-DC and DC-DC converters for efficient power conversion.
  2. LED Lighting: Provides precise control and regulation of LED drivers for optimal lighting performance.
  3. Battery Chargers: Enables efficient charging of batteries in portable devices and electric vehicles.
  4. Motor Control: Facilitates precise control of motor speed and torque in industrial and automotive applications.
  5. Audio Amplifiers: Regulates power delivery to audio amplifiers for high-quality sound reproduction.

Detailed and Complete Alternative Models

  1. UCC2817ADW: SOIC-14 package, similar specifications and features.
  2. UCC2817AN: PDIP-14 package, similar specifications and features.
  3. UCC3817APWR: TSSOP-14 package, higher output current capability.
  4. UCC2818APWR: TSSOP-14 package, additional features such as adjustable slope compensation.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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10 domande e risposte comuni relative all'applicazione di UCC2817APWR nelle soluzioni tecniche

Sure! Here are 10 common questions and answers related to the application of UCC2817APWR:

  1. Q: What is UCC2817APWR? A: UCC2817APWR is a pulse width modulation (PWM) controller IC used in power supply applications.

  2. Q: What is the input voltage range for UCC2817APWR? A: The input voltage range for UCC2817APWR is typically between 8V and 35V.

  3. Q: What is the output voltage range for UCC2817APWR? A: The output voltage range for UCC2817APWR depends on the external components used, but it can be adjusted to meet specific requirements.

  4. Q: How does UCC2817APWR regulate the output voltage? A: UCC2817APWR uses a feedback loop to regulate the output voltage by adjusting the duty cycle of the PWM signal.

  5. Q: Can UCC2817APWR handle high current loads? A: Yes, UCC2817APWR can handle high current loads by using external power devices such as MOSFETs or IGBTs.

  6. Q: What is the maximum switching frequency of UCC2817APWR? A: The maximum switching frequency of UCC2817APWR is typically around 500kHz.

  7. Q: Does UCC2817APWR have built-in protection features? A: Yes, UCC2817APWR has built-in protection features such as overvoltage protection, undervoltage lockout, and thermal shutdown.

  8. Q: Can UCC2817APWR operate in a wide temperature range? A: Yes, UCC2817APWR can operate in a wide temperature range, typically from -40°C to 125°C.

  9. Q: What are the typical applications of UCC2817APWR? A: UCC2817APWR is commonly used in power supply applications such as offline AC-DC converters, DC-DC converters, and battery chargers.

  10. Q: Is UCC2817APWR available in different package options? A: Yes, UCC2817APWR is available in various package options, including SOIC-8 and TSSOP-14.

Please note that the answers provided here are general and may vary depending on specific datasheet specifications and application requirements.