SNVU894 December   2024 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 Descriptions
      1. 2.2.1 Compatibility With the LM5017
  9. 3Implementation Results
    1. 3.1 Performance Curves
    2. 3.2 EVM Characteristics
  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 LM5169FEVM is configured to deliver a regulated 10V output, with 0.3A at 750kHz switching frequency, and an additional 10V floating output also capable of 0.3A. The LM5169 uses a COT control architecture, with input voltage feedforward 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 LM5169FEVM is set up with type III ripple injection to minimize the output voltage ripple while making sure there is a stable regulator. The LM5169FEVM 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. An overall view of the LM5169FEVM and the schematic are shown in Figure 2-1 and Figure 4-1, respectively. While the board is optimized for the LM5169FNGUR, there are component pads which can make the board compatible with the LM5017 to evaluate design changes when replacing the device with the LM5169.