Texas Instruments
Obrázek může být reprezentace.
Viz Specifikace pro podrobnosti o produktu.
UCC28501DWG4
Zobrazit detail DataSheets

UCC28501DWG4

Product Overview

Category

UCC28501DWG4 belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This IC is commonly used in various power supply systems, including switch-mode power supplies (SMPS), battery chargers, and LED drivers.

Characteristics

  • High efficiency: UCC28501DWG4 offers high efficiency due to its advanced control algorithms and low power dissipation.
  • Wide input voltage range: It can operate with a wide input voltage range, making it suitable for different power supply applications.
  • Protection features: The IC incorporates various protection features such as overvoltage protection (OVP), undervoltage lockout (UVLO), and thermal shutdown.

Package

UCC28501DWG4 is available in a small-sized surface-mount package, known as SOIC-8 (Small Outline Integrated Circuit).

Essence

The essence of UCC28501DWG4 lies in its ability to regulate and control power supply systems efficiently, ensuring stable and reliable operation.

Packaging/Quantity

This IC is typically packaged in reels or tubes, containing a quantity of 2500 units per reel/tube.

Specifications

  • Input Voltage Range: 9V to 30V
  • Output Voltage Range: 3.3V to 24V
  • Maximum Output Current: 1A
  • Switching Frequency: 100kHz to 1MHz
  • Operating Temperature Range: -40°C to 125°C

Pin Configuration

UCC28501DWG4 has the following pin configuration:

  1. VCC: Power supply input
  2. GND: Ground reference
  3. FB: Feedback pin for output voltage regulation
  4. COMP: Compensation pin for stability control
  5. CS: Current sense pin for current limit control
  6. RT/CT: Timing components connection for frequency control
  7. SS/TR: Soft-start and tracking pin for controlled startup
  8. OUT: Output pin for regulated voltage supply

Functional Features

  • Voltage regulation: UCC28501DWG4 provides precise voltage regulation by adjusting the duty cycle of the switching transistor.
  • Current limit control: It incorporates a current sense pin to monitor and limit the output current, ensuring protection against overcurrent conditions.
  • Soft-start function: The soft-start feature allows gradual ramp-up of the output voltage during startup, preventing excessive inrush current.
  • Frequency control: The timing components connected to the RT/CT pin enable control over the switching frequency, optimizing efficiency and performance.

Advantages and Disadvantages

Advantages

  • High efficiency leads to reduced power dissipation and improved energy savings.
  • Wide input voltage range enables versatile application in different power supply systems.
  • Comprehensive protection features ensure system reliability and longevity.
  • Small package size facilitates space-constrained designs.

Disadvantages

  • Limited maximum output current may restrict usage in high-power applications.
  • Requires external components for proper operation, increasing overall system complexity.

Working Principles

UCC28501DWG4 operates based on the principle of pulse width modulation (PWM). It regulates the output voltage by controlling the duty cycle of the internal switching transistor. By continuously monitoring the feedback voltage through the FB pin, the IC adjusts the duty cycle to maintain the desired output voltage. The current sense pin (CS) ensures that the output current remains within the specified limits.

Detailed Application Field Plans

UCC28501DWG4 finds extensive application in various power management systems, including: 1. Switch-mode power supplies (SMPS) for computers, telecommunication equipment, and industrial machinery. 2. Battery chargers for portable devices such as smartphones, tablets, and laptops. 3. LED drivers for lighting applications, including residential, commercial, and automotive lighting.

Detailed and Complete Alternative Models

  1. UCC28501DWG4 can be replaced with UCC28502DWG4, which offers similar features but with a higher maximum output current of 2A.
  2. For lower power applications, UCC28503DWG4 is an alternative model that provides a maximum output current of 500mA.

In conclusion, UCC28501DWG4 is a versatile integrated circuit designed for efficient power management applications. Its high efficiency, wide input voltage range, and comprehensive protection features make it suitable for various power supply systems. However, its limited maximum output current and external component requirements should be considered when selecting this IC for specific applications.

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací UCC28501DWG4 v technických řešeních

Sure! Here are 10 common questions and answers related to the application of UCC28501DWG4 in technical solutions:

  1. Q: What is UCC28501DWG4? A: UCC28501DWG4 is a high-performance, low-power current mode PWM controller used for various power supply applications.

  2. Q: What are the key features of UCC28501DWG4? A: Some key features include wide input voltage range, adjustable switching frequency, cycle-by-cycle current limit, and integrated soft-start.

  3. Q: What are the typical applications of UCC28501DWG4? A: UCC28501DWG4 is commonly used in offline flyback converters, LED lighting, battery chargers, and other isolated/non-isolated power supply designs.

  4. Q: How does UCC28501DWG4 help in improving power supply efficiency? A: UCC28501DWG4 offers excellent light-load efficiency due to its low operating current and burst mode operation, reducing power consumption during standby or low load conditions.

  5. Q: Can UCC28501DWG4 handle high input voltages? A: Yes, UCC28501DWG4 can handle input voltages up to 100V, making it suitable for applications with higher input voltage requirements.

  6. Q: Does UCC28501DWG4 provide protection features? A: Yes, UCC28501DWG4 includes features like overvoltage protection (OVP), undervoltage lockout (UVLO), and thermal shutdown to ensure safe operation.

  7. Q: How can I adjust the switching frequency of UCC28501DWG4? A: The switching frequency can be adjusted by changing the value of an external resistor connected to the RT pin of UCC28501DWG4.

  8. Q: Can UCC28501DWG4 operate in a synchronized mode? A: Yes, UCC28501DWG4 can be synchronized to an external clock signal for applications requiring multiple converters or noise reduction.

  9. Q: What is the maximum output power that UCC28501DWG4 can handle? A: The maximum output power depends on the specific application and design considerations, but UCC28501DWG4 can handle power levels up to several hundred watts.

  10. Q: Is UCC28501DWG4 available in different package options? A: Yes, UCC28501DWG4 is available in various package options, including SOIC-8 and TSSOP-14, providing flexibility for different PCB layouts and space constraints.

Please note that these answers are general and may vary depending on the specific requirements and design considerations of your application.