TIDUFF4 October   2025

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Key System Specifications
      1. 1.1.1 General TI High Voltage Evaluation User Safety Guidelines
        1. 1.1.1.1 Safety and Precautions
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
      1. 2.2.1 GaN Power Stage
      2. 2.2.2 Inductor
      3. 2.2.3 Controller
      4. 2.2.4 Cooling
        1. 2.2.4.1 Heat Sink Placement
        2. 2.2.4.2 Via Placement
        3. 2.2.4.3 Copper Block
    3. 2.3 Highlighted Products
      1. 2.3.1 LMG3100R017
      2. 2.3.2 UCD3138A
      3. 2.3.3 TPSM365R6V5
      4. 2.3.4 TMP61
  9. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Hardware Requirements
    2. 3.2 Software Requirements
    3. 3.3 Test Setup
    4. 3.4 Test Results
  10. 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 Power Loop Optimization
        2. 4.1.3.2 Return Current Through Output Power Ground
    2. 4.2 Tools and Software
    3. 4.3 Documentation Support
    4. 4.4 Support Resources
    5. 4.5 Trademarks
  11. 5About the Author

2.3.3 TPSM365R6V5

The TPSM365R6 is an easy-to-use, synchronous buck, DC-DC power module that operates from a 3V to 65V supply voltage. The device is intended for step-down conversions from 5V, 12V, 24V, and 48V supply rails. With an integrated power controller, inductor, and MOSFETs, the TPSM365R6 or TPSM365R3 delivers up to 600mA DC load current with high efficiency and ultra-low input quiescent current in a very small design size. Although designed for simple implementation, this device offers flexibility to optimize the usage according to the target application. Control-loop compensation is not required, reducing design time and external component count. The TPSM365Rx can operate over a wide range of switching frequencies and duty ratios. If the minimum ON-time or OFF-time cannot support the desired duty ratio, the switching frequency gets reduced automatically, maintaining the output voltage regulation. With the right internal loop compensation the system design time with the TPSM365Rx reduces significantly with minimal external components. In addition, the PGOOD output feature with built-in delayed release allows the elimination of the reset supervisor in many applications. With a programmable switching frequency from 200kHz to 2.2MHz using the RT pin or an external clock signal. These features enable a flexible and easy-to-use platform for a wide range of applications. The pin arrangement is designed for a simple layout, requiring few external components.