SNVU191B October   2012  – December 2021 LMR12020

 

  1.   Trademarks
  2. 1Introduction
  3. 2Features
  4. 3Evaluation Module Schematic
  5. 4Powering and Loading Considerations
    1. 4.1 Quick Start Procedure
    2. 4.2 Starting Up
    3. 4.3 Synchronization
    4. 4.4 No Load Start-Up at High Output Voltage
    5. 4.5 Adjusting the Output Voltage
    6. 4.6 Typical Test Setup
  6. 5Board Images
  7. 6Performance Characteristics
  8. 7Bill of Materials
  9. 8PCB Layout
  10. 9Revision History

7 Bill of Materials

Part NamePart IDPart ValuePart NumberManufacturer
Buck RegulatorU12-A Buck RegulatorLMR12020Texas Instruments
Input CapacitorCin10 µFC1210C106K8PACTUKemet
Bootstrap CapacitorCboost0.1 µFC0603C104K8RACTUKemet
Output CapacitorCo122 µFGRM32ER71C226KE18LMurata
Output CapacitorCo222 µFGRM32ER71C226KE18LMurata
Catch DiodeD1Schottky Diode Vf = 0.32 VCMS01Toshiba
InductorL13.3 µH7447789003Wurth Elektronik eiSos
Feedback ResistorRfbt14.02 kΩCRCW06034K02FKEAVishay-Dale
Feedback ResistorRfbt25.49 kΩCRCW06035K49FKEAVishay-Dale
Feedback ResistorRfbb1.02 kΩCRCW06031K02FKEAVishay-Dale
Pull-up ResistorRen4.75 kΩCRCW06034K75FKEAVishay-Dale
Pull-down ResistorR_S4.75 kΩCRCW06034K75FKEAVishay-Dale
Test PointVINTest Point Loop5010Keystone
Test PointSWTest Point Loop5012Keystone
Test PointGNDTest Point Loop5011Keystone
Test PointGNDTest Point Loop5011Keystone
Test PointVOUTTest Point Loop5013Keystone
Test PointENTest Point Loop5014Keystone
Test PointSYNCTest Point Loop5014Keystone
HeaderJ12 × 1 Header, TH, 100milTSW-102-07-G-SSamtec, Inc.
ShuntSH-J1Black 100-mil Gold Plated Shunt969102-0000-DA3M