SNVU843B April   2023  – June 2025

 

  1.   1
  2.   LM5171 Evaluation Module
  3.   Trademarks
  4. 1Features and Electrical Performance
  5. 2Setup
    1. 2.1 EVM Configurations
    2. 2.2 Bench Setup
    3. 2.3 Test Equipment
    4. 2.4 Jumper Settings for Typical Operation Modes
      1. 2.4.1 Buck Mode with Voltage Regulation
      2. 2.4.2 Boost Mode with Voltage Regulation
      3. 2.4.3 Buck Mode with Current Regulation
      4. 2.4.4 Boost Mode with Current Regulation
      5. 2.4.5 Single Phase Operation
      6. 2.4.6 2-EVM Daisy-Chain for 3 or 4-Phase Operation
  6. 3Test Procedure
    1. 3.1 Buck Mode Power-Up and Power-Down Sequence
    2. 3.2 Boost Mode Power-Up and Power-Down Sequence
    3. 3.3 Bidirectional Operation Power-Up and Power-Down Sequence
    4. 3.4 Operating the EVM With External MCU or Other Digital Circuit
    5. 3.5 How to Adjust the Output Voltage
  7. 4Test Data
    1. 4.1 Efficiency and Thermal Performance
    2. 4.2 Step Load Response
    3. 4.3 Dual-Channel Interleaving Operation
    4. 4.4 Typical Start Up and Shutdown
    5. 4.5 DEM and FPWM
    6. 4.6 Mode Transition Between DEM and FPWM
    7. 4.7 ISET Tracking and Pre-Charge
    8. 4.8 Pre-charge
    9. 4.9 Protections
  8. 5Design Files
    1. 5.1 Schematics
    2. 5.2 Bill of Materials
    3. 5.3 Board Layout
  9. 6Revision History

2.4.3 Buck Mode with Current Regulation

Figure 2-6 shows the jumper settings of buck mode with current regulation.

LM5171-Q1 Jumper Settings in Buck Mode with Current Regulation Figure 2-6 Jumper Settings in Buck Mode with Current Regulation

Compared to Buck Mode with Voltage Regulation, J36 is open and ISET is set from external precision voltage source . Also note the load needs to be set to CV mode.