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

2.3 Test Equipment

Power Supplies: HV-PS needs to be capable of 80 V/20 A, and LV-PS 40 V/80 A. To operate 2 EVMs in 4 phase configuration, double the capabilities of the HV-PS and LV-PS. Bench power supplies to generate UVLO, ISETA, DIR, and EN1 and EN2 signals need to be capable of 5 V/0.1A.

Electronic Loads: The HV-E-Load needs to be capable of 80 V/20 A, and LV-E-Load 40 V/80 A. To operate 2 EVMs in 4 phase configuration, double the capability of the E-Load.

Meters: Because most current meters are rated only to 10 A, shunts are recommended to measure the current using a DVM.

Oscilloscope: An oscilloscope and 10x probes with at least 20-MHz bandwidth is required. Current probe capable of 50 A is required to monitor the inductor current via a wire loop inserted to the non-switching side of the inductor.