SLVT225 October   2025

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Dimensions
  8. 2Testing and Results
    1. 2.1 Efficiency
    2. 2.2 Loss
    3. 2.3 Load Regulation
    4. 2.4 Frequency Fold-Back Behavior
    5. 2.5 Line Regulation with 3A Output Current
    6. 2.6 Thermal Images
      1. 2.6.1 Top Side
      2. 2.6.2 Bottom Side
    7. 2.7 Bode Plots
  9. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Output Voltage Ripple
    3. 3.3 Input Voltage Ripple
      1. 3.3.1 Measured on J9
      2. 3.3.2 Measured on D4
    4. 3.4 Load Transients
    5. 3.5 Start-Up Sequence (3A Output Current)
    6. 3.6 Shutdown Sequence (3A Output Current)
  10.   Trademarks

Description

This reference design enables high-efficiency and low EMI. The design operates over a wide input voltage range reducing the need for external input surge protection. The design uses the LM686x5 buck converter which is intended for functional safety relevant applications. The design includes safety features such as redundant Vin and Vout monitoring with undervoltage lockout (UVLO) and overvoltage lockout (OVLO), feedback path failure detection and thermal shutdown.