SNVU948 July   2025 LM51770

 

  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 Connector, Test Point, and Selection Switch Descriptions
      1. 2.1.1 Connector Descriptions
      2. 2.1.2 Jumper Descriptions
      3. 2.1.3 Test Point Descriptions
      4. 2.1.4 Selection Switch Descriptions
        1. 2.1.4.1 S1 and S2 CFG Setting
      5. 2.1.5 Current Monitor and Current Limiter Configuration
        1. 2.1.5.1 Current Monitor Configuration
        2. 2.1.5.2 Current Limiter Configuration
  9. 3Implementation Results
    1. 3.1 Test Setup and Procedure
      1. 3.1.1 Test Setup
      2. 3.1.2 Test Procedure
      3. 3.1.3 Precautions
    2. 3.2 Test Data and Performance Curves
      1. 3.2.1 Thermal Performance
      2. 3.2.2 Efficiency
      3. 3.2.3 Steady State Waveforms
      4. 3.2.4 Step Load Response
      5. 3.2.5 AC Loop Response Curve
  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

2.1.5.2 Current Limiter Configuration

Current Limiter Configuration

For the current limiting below settings need to be done:

  • CFG setting with Current limiter enabled

  • IMONOUT jumper J11 removed

  • SYNC connected to VCC for forward current limit

  • IMONOUT with resistor and capacitor in series to GND (note: the EMV shows only placeholder for components, names, and symbols do not always reflect the component type and value that are placed there. For example 2.2nF and 700Ω

LM51770 IMONOUT components for current limitFigure 2-2 IMONOUT components for current limit
LM51770 LM51770 Current Limit EVM SetupFigure 2-3 LM51770 Current Limit EVM Setup