TIDUC99 August   2022 TPSM82903

 

  1.   Description
  2.   Resources
  3.   Features
  4.   Applications
  5.   5
  6. 1System Description
  7. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
    3. 2.3 Highlighted Products
    4. 2.4 System Design Theory
      1. 2.4.1 Buck Converter Circuit Design Using TPSM82903
  8. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Hardware Requirements
    2. 3.2 Test Setup
    3. 3.3 Test Results
      1. 3.3.1 Startup
      2. 3.3.2 Shutdown
      3. 3.3.3 Load Transient
      4. 3.3.4 Output Ripple
      5. 3.3.5 Efficiency
      6. 3.3.6 Thermal Performance
      7. 3.3.7 Output Voltage vs. Output Current
  9. 4Design and Documentation Support
    1. 4.1 Design Files
      1. 4.1.1 Schematics
      2. 4.1.2 BOM
      3. 4.1.3 PCB Layout Recommendations
        1. 4.1.3.1 Layout Prints
      4. 4.1.4 Altium Project
      5. 4.1.5 Gerber Files
      6. 4.1.6 Assembly Drawings
    2. 4.2 Documentation Support
    3. 4.3 Support Resources
    4. 4.4 Trademarks

1 System Description

The TIDA-050055 is designed by using the TPSM82903 high efficiency and low IQ DC/DC Buck converter with integrated inductor. The design is optimized for small total solution size, low BOM count, high efficiency, best thermal performance, and lowest quiescent current possible. This design is ideal for applications where space is limited such as smart lock, wearable devices, and so on. The high efficiency and low IQ are ideal for battery operated systems. The design allows for efficient battery usage and extended lifetime.

Table 1-1 Key System Specifications
PARAMETERMINTypicalMAXUNIT
Input Voltage31217V
Output Voltage1.1851.21.215V
Output Current 03A
Switching Frequency2.5MHz
Operating Quiescent Current (Power Save Mode)4uA
Junction Temperature -40125C
Output Capacitor DischargeEnabled