SNVU895 January   2025 LM5169

 

  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
    5. 1.5 General TI High Voltage Evaluation User Safety Guidelines
  8. 2Hardware
    1. 2.1 Quick Start Procedure
    2. 2.2 Detailed Description
      1. 2.2.1 Compatibility With the LM5017
    3. 2.3 EVM Characteristics
  9. 3Implementation Results
    1. 3.1 Performance Curves
  10. 4Hardware Design Files
    1. 4.1 Schematic
    2. 4.2 PCB Layout
    3. 4.3 Bill of Materials
  11. 5Additional Information
    1. 5.1 Trademarks

1.1 Introduction

The LM5169PEVM is configured to deliver a regulated 12V output, 0.65A at 500kHz switching frequency. The LM5169 uses a COT control architecture, with input voltage feed-forward to provide a constant frequency regulator with tightly regulated output voltage. This type of control requires adequate voltage ripple at the FB input to achieve stable regulation. The LM5169PEVM is set up with type III ripple injection to minimize the output voltage ripple while making sure of a stable regulator. The LM5169PEVM also provides the option to use type I or type II ripple injection. See the LM516x, 0.65A/0.3A, 120V Absolute Maximum, Step-Down Converter With Fly-Buck™ Converter Capability data sheet for more information. Figure 2-1 and Figure 4-1 show an overall view of the LM5169PEVM and the schematic, respectively. While the board is optimized for the LM5169PNGUR, there are component pads which can make the board compatible with the LM5017 to evaluate design changes when replacing the device with the LM5169.