SNVU869 august   2023 LM5185-Q1

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 Setup
    2. 2.2 Header Information
    3. 2.3 Test Points
    4. 2.4 Assembly Instructions
    5. 2.5 Best Practices
  9. 3Implementation Results
    1. 3.1 Performance Data and Results
      1. 3.1.1 Conversion Efficiency
      2. 3.1.2 Output Voltage Regulation
      3. 3.1.3 Operating Waveforms
        1. 3.1.3.1 Start-up
        2. 3.1.3.2 Load Transient Response
        3. 3.1.3.3 Switching
    2. 3.2 Thermal Performance
  10. 4Hardware Design Files
    1. 4.1 Schematic
    2. 4.2 PCB Layout
    3. 4.3 Bill of Materials (BOM)
  11. 5Compliance Information
    1. 5.1 Compliance and Certifications
  12. 6Additional Information
    1. 6.1 Trademarks

1.4 Device Information

The factory default settings of the EVM allow the operation with an input voltage range from 20 V to 60 V. The device produces a single isolated output voltage of 16.4 V ±1% @ 1 A load, and achieves > 90% peak efficiency. Fine-tuning of the output voltage can be realized by adjusting the external resistor values at the FB pin. In addition, the users can modify the EVM to enable the operation under a VIN down to 6 V with derated output current of 0.4A by changing the EN/UVLO set point. Further lower input voltage down to 4.5V is supported by the LM5185-Q1 but the EVM requires a different transformer. However, the maximum VIN voltage of the EVM can be increased to 90 V if the power MOSFET is changed to a 150 V or higher rated device, and if the input bulk capacitor is replaced with at least a 100 V rated part. Multiple isolated output can also be supported by the LM5185-Q1 but requires a different transformer. Please refer to the Quick Start Design Calculator to help design.

Refer to TI product data sheet SNVSBT4 for more detailed information of the LM5185-Q1 PSR flyback controller.