SNVU621D May   2019  – July 2021 LM61440 , LM61440-Q1 , LM61460 , LM61460-Q1

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 LM61460 Synchronous Step-Down Voltage Converter
    2. 1.2 LM61460-Q1 Evaluation Module
  3. 2Quick Start
  4. 3Detailed Descriptions
  5. 4Schematic
    1. 4.1 Alternative BOM Configurations
  6. 5Board Layout
  7. 6LM61460EVM Board Test Results
    1. 6.1 EMI
    2. 6.2 Board Efficiency
    3. 6.3 Load Regulation
  8. 7Bill of Materials
  9. 8Revision History

7 Bill of Materials

The bill of material is shown Table 7-1 for Rev A of the LM61460EVM-AS-400K and LM61460EVM-FS-400K. Note that the BOM difference between the two EVM variants is the selection of the IC populated (U1).

Table 7-1 LM61460EVM-xS-400K Rev A EVM Bill of Materials
DESIGNATORQUANTITYVALUEDESCRIPTIONPACKAGE REFERENCEPART NUMBERMANUFACTURER
C1, C424.7 µFCAP, CERM, 4.7 µF, 50 V, ±20%, X7R, AEC-Q200 Grade 1, 12101210UMK325B7475MMHTTaiyo Yuden
C2, C320.022 µFCAP, CERM, 0.022 µF, 50 V, ±10%, X7R, 04020402GRM155R71H223KA12DMuRata
C511 µFCAP, CERM, 1 µF, 25 V, ±10%, X7R, 08050805C0805C105K3RACTUKemet
C6, C7, C8, C9422 µFCAP, CERM, 22 µF, 16 V, ±20%, X7R, AEC-Q200 Grade 1, 12101210CGA6P1X7R1C226M250ACTDK
C1211000 pFCAP, CERM, 1000 pF, 50 V, ±0%, X7R, 06030603C0603C102K5RACTUKemet
C1310.1 µFCAP, CERM, 0.1 µF, 10 V, ±10%, X7R, 06030603C0603X104K8RACTUKemet
C1511 µFCAP, CERM, 1 µF, 16 V, ±10%, X7R, 06030603885012206052Wurth Elektronik
C16122 pFCAP, CERM, 22 pF, 50 V, ±5%, C0G/NP0, AEC-Q200 Grade 1, 06030603CGA3E2C0G1H220J080AATDK
C17, C18, C19, C2042.2 µFCAP, CERM, 2.2 µF, 50 V, ±10%, X7R, AEC-Q200 Grade 1, 08050805CGA4J3X7R1H225K125ABTDK
C21, C2220.47 µFCAP, CERM, 0.47 µF, 50 V, ±10%, X7R, AEC-Q200 Grade 1, 06030603CGA3E3X7R1H474K080AETDK
J1, J2, J33Terminal Block, 5 mm, 2x1, Tin, THTerminal Block, 5 mm, 2x1, TH691 101 710 002Wurth Elektronik
J41Header, 100 mil, 3x1, Gold, THHeader, 100 mil, 3x1, THHTSW-103-07-G-SSamtec
L114.7 µHInductor, Shielded, Hyperflux, 4.7 µH, 7.4 A, 0.0143 Ω, SMD6.65x6.45 mm74439346047Wurth Elektronik
L211.2 µH Shielded Molded Inductor 7.5 A, 11.3 mΩ Max 2-SMDSMD2744316220Wurth Electronics
LBL11PCB Label 0.650 x 0.200 inchTHT-14-423-10Brady
R1, R621.00 kRES, 1.00 k, 1%, 0.25 W, 12061206RC1206FR-071KLYageo America
R210RES, 0, 5%, 0.1 W, 06030603RC0603JR-070RLYageo
R3133.2 kRES, 33.2 k, 1%, 0.1 W, AEC-Q200 Grade 0, 06030603CRCW060333K2FKEAVishay-Dale
R4, R72100 kRES, 100 k, 1%, 0.1 W, 06030603RC0603FR-07100KLYageo
R51100RES, 100, 1%, 0.1 W, 06030603RC0603FR-07100RLYageo
R8124.9 kRES, 24.9 k, 1%, 0.1 W, 06030603RC0603FR-0724K9LYageo
R911.00 kRES, 1.00 k, 1%, 0.1 W, 06030603ERJ-3EKF1001VPanasonic
R101255 kRES, 255 k, 1%, 0.1 W, 06030603RC0603FR-07255KLYageo
SH-J11Shunt, 100 mil, Gold plated, BlackShunt 2 pos. 100 mil881545-2TE Connectivity
TP1, TP92Test Point, Multipurpose, Red, THRed Multipurpose Testpoint5010Keystone
TP2, TP3, TP5, TP64Test Point, Multipurpose, Black, THBlack Multipurpose Testpoint5011Keystone
TP4, TP72Test Point, Multipurpose, Orange, THOrange Multipurpose Testpoint5013Keystone
TP8, TP102Test Point, Multipurpose, White, THWhite Multipurpose Testpoint5012Keystone
U1 (changes based on EVM variant)1Automotive 6-A Low Noise Synchronous Buck Regulators, RJR0014A (VQFN-HR-14)RJR0014ALM61460AASQRJRRQ1 (LM61460EVM-AS-400K) or LM61460AFSQRJRRQ1 (LM61460EVM-FS-400KTexas Instruments
C10, C11022 µFCAP, CERM, 22 µF, 16 V, ±20%, X7R, AEC-Q200 Grade 1, 12101210CGA6P1X7R1C226M250ACTDK
C1401 µFCAP, CERM, 1 µF, 10 V, ±10%, X7R, 06030603GRM188R71A105KA61DMuRata
C23, C2401 µFCAP, CERM, 1 µF, 50 V, ±10%, X7R, 06030603UMK107AB7105KA-TTaiyo Yuden
FID1, FID2, FID3, FID4, FID5, FID60Fiducial mark. There is nothing to buy or mount.N/AN/AN/A
R11, R1200.51RES, 0.51, 1%, 0.25 W, 08050805CRM0805-FX-R510ELFBourns
R130100 kRES, 100 k, 1%, 0.1 W, 06030603RC0603FR-07100KLYageo