SNVU843A April   2023  – November 2023

 

  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 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
  7. 4Test Data
    1. 4.1 Efficiency
    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
    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

2.4.5 2-EVM Daisy-Chain for 3 or 4-Phase Operation

Figure 2-8 shows the jumper settings for 2-EVM Daisy-Chain.

GUID-20230324-SS0I-VCB2-XRKX-CDBDCGLFLZGZ-low.svg Figure 2-8 Jumper Settings in 2-EVM Daisy-Chain for 3 or 4-Phase Operation

EVM Board Top View and Layout PartitionsJumper Settings in Buck Mode with Voltage RegulationJumper Settings in Boost Mode with Voltage RegulationJumper Settings in Buck Mode with Current RegulationJumper Settings in Boost Mode with Current RegulationJumper Settings in 2-EVM Daisy-Chain for 3 or 4-Phase Operation described four-phase operating with 90° interleaving. By connecting secondary EVM J30 pin 2,3 instead of pin 1,2, three-phase operating is obtained.

J6 is open and J32 is closed in main EVM, thus interleaving angle changes automatically between 3 phase and 4 phase.

Note for bidirectional operation, the source and load needs to be set referring to Bench Setup.