TPS5405 Voltage Regulator (Evaluation Board).
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The TPS5405 is a monolithic non-synchronous buck regulator with a wide operating input voltage range from 6.5 V to 28 V. It offers a fixed 5-V output and supports up to 2-A maximum continuous loading current. Here are the key features and specifications as derived from the provided document:

Features:

  • Fixed 5-V Output: Ensures a stable output voltage for a variety of applications.
  • Wide Input Voltage Range (6.5-V to 28-V):Enables the use of various input sources.
  • 2-A Maximum Continuous Output Loading Current: Supports applications requiring up to 2 A of output current.
  • Pulse Skipping Mode for High Light Load Efficiency: Reduces power loss at light loads, enhancing efficiency.
  • Over 80% Efficiency at 10-mA Loading: Indicates high efficiency even at low load conditions.
  • Adjustable Switching Frequency (50 kHz to 1.1 MHz): Allows optimization of switching frequency to meet application needs.
  • Peak Current-Mode Control and Cycle-by-Cycle Over Current Protection: Provides robust control and protection mechanisms.
  • Switching Node Anti-Ringing to Ease EMI Issue: Addresses potential electromagnetic interference problems.
  • External Soft Start: Allows for controlled start-up and reduces inrush current.
  • Available in SOIC8 Package: Offers a compact form factor for space-constrained applications.

Applications:

  • Suitable for 9-V, 12-V, and 24-V distributed power systems.
  • Ideal for consumer applications such as home appliances, set-top boxes, CPE equipment, LCD displays, peripherals, and battery chargers.
  • Can be used in industrial and car entertainment power supplies.

Description:
The TPS5405 utilizes current mode control with internal slope compensation to reduce component count, making it an efficient choice for a wide range of applications. It features a light load pulse skipping mode to minimize power loss from the input power supply to the system at light load conditions. Additionally, the switching frequency of the converter can be set with an external resistor, and frequency spread spectrum operation is implemented for EMI reduction.

Datasheet of TPS5405 IC.

Datasheet of TPS5405 Evolution Board.

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