SNVU797C April   2022  – October 2024 LM5177

 

  1.   1
  2.   LM5177 Wide-VIN Buck-Boost Controller EVM
  3.   Trademarks
  4. 1Features
  5. 2Connector, Test Point, and Selection Switch Descriptions
    1. 2.1 Connector Descriptions
    2. 2.2 Jumper Descriptions
    3. 2.3 Test Point Descriptions
    4. 2.4 Selection Switch Descriptions
      1. 2.4.1 S1 and S2 CFG setting
  6. 3Test Setup and Procedure
    1. 3.1 Test Setup
    2. 3.2 Test Procedure
    3. 3.3 Precautions
  7. 4Test Data and Performance Curves
    1. 4.1 Thermal Performance
    2. 4.2 Efficiency
    3. 4.3 Steady State Waveforms
    4. 4.4 Step Load Response
  8. 5Schematic
  9. 6Optional Components
  10. 7Board Layout
  11. 8Bill of Materials
  12. 9Revision History

6 Optional Components

Table 6-1 shows a list and function of optional components placed in the schematic

Table 6-1 Optional Components
Component Function

R47 / C34

R48 / C35

R50 / C36

 Filter for digital signals; can be added in a noisy setup. If not used, add 0 Ohm for the resistors.
J12 / R22 / R23 / R51 /R52 I2C interface - not available for the LM5177. Pins are used as logic level output of HO1 and HO2, see data sheet.
R18 / R17 / C33 Footprint for filter circuit on IMONOUT, see data sheet for component selection to configure that function.
D3 / D4 Placeholder for external BOOT diodes.
R42 / R43 / C30 Input filter for ISNS input.
Reverse CV Regulation Section Can add CV control in reverse CC Mode.