SLVUAM8B December   2015  – August 2021 TPS54A20

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Before You Begin
    2. 1.2 Background
    3. 1.3 Performance Specification Summary
    4. 1.4 Modifications
      1. 1.4.1 Output Voltage Setpoint
      2. 1.4.2 On Time
      3. 1.4.3 Adjustable UVLO
  3. 2Test Setup and Results
    1. 2.1  Input/Output Connections
    2. 2.2  Efficiency
    3. 2.3  Output Voltage Load Regulation
    4. 2.4  Output Voltage Line Regulation
    5. 2.5  Load Transients
    6. 2.6  Loop Characteristics
    7. 2.7  Output Voltage Ripple
    8. 2.8  Input Voltage Ripple
    9. 2.9  Powering Up
    10. 2.10 Thermal Image
  4. 3Board Layout
    1. 3.1 Layout
  5. 4Schematic and Bill of Materials
    1. 4.1 Schematic
    2. 4.2 Bill of Materials
  6. 5Revision History

4.2 Bill of Materials

Table 4-1 presents the bill of materials for the TPS54A20EVM-770.

Table 4-1 TPS54A20EVM-770 Bill of Materials
DesignatorQuantityValueDescriptionPackagePart NumberManufacturer
PCB1Printed Circuit BoardPWR770Any
C1, C2210uFCAP, CERM, 10 uF, 25 V, +/- 20%, X5R, 06030603C1608X5R1E106M080ACTDK
C311uFCAP, CERM, 1 uF, 16 V, +/- 10%, X7R, 06030603C1608X7R1C105K080ACTDK
C411uFCAP, CERM, 1 uF, 10 V, +/- 10%, X5R, 04020402GRM155R61A105KE15DMuRata
C5, C720.047uFCAP, CERM, 0.047 uF, 10 V, +/- 10%, X5R, 04020402C1005X5R1A473K050BATDK
C612.2uFCAP, CERM, 2.2 uF, 16 V, +/- 10%, X7R, 12061206GRM31MR71C225KA35LMuRata
C8122pFCAP, CERM, 22 pF, 50 V, +/- 5%, C0G/NP0, 0603060306035A220JAT2AAVX
C9, C10247uFCAP, CERM, 47 uF, 10 V, +/- 20%, X5R, 08050805GRM21BR61A476ME15MuRata
C24122uFCAP, CERM, 22 uF, 35 V, +/- 20%, X5R, 08050805C2012X5R1V226M125ACTDK
J1, J42Terminal Block, 5.08 mm, 2x1, Brass, TH2x1 5.08 mm Terminal BlockED120/2DSOn-Shore Technology
J2, J32Header, 100mil, 2x1, Gold, THHeader, 100mil, 2x1, THHTSW-102-07-G-SSamtec
L1, L22220nHInductor, 220 nH, 7.2 A, 0.0075 ohm, SMD3.2x2.5mmMLA-FY12NR22N-M3-RUMag Layers
Q1130VMOSFET, N-CH, 30 V, 65 A, DQJ0008A (VSONP-8)DQJ0008ACSD17527Q5ATexas Instruments
R2180.6kRES, 80.6 k, 1%, 0.1 W, 06030603CRCW060380K6FKEAVishay-Dale
R3112.4kRES, 12.4 k, 1%, 0.1 W, 06030603CRCW060312K4FKEAVishay-Dale
R5122.1kRES, 22.1 k, 1%, 0.1 W, 06030603RC0603FR-0722K1LYageo America
R6147.5kRES, 47.5 k, 1%, 0.1 W, 06030603RC0603FR-0747K5LYageo America
R7114.3kRES, 14.3 k, 1%, 0.1 W, 06030603CRCW060314K3FKEAVishay-Dale
R813.32kRES, 3.32 k, 1%, 0.1 W, 06030603CRCW06033K32FKEAVishay-Dale
R9120.0kRES, 20.0 k, 1%, 0.1 W, 06030603CRCW060320K0FKEAVishay-Dale
R1010RES, 0, 5%, 0.1 W, 06030603ERJ-3GEY0R00VPanasonic
R11151.1RES, 51.1, 0.1%, 0.1 W, 06030603RT0603BRD0751R1LYageo America
R12, R1320.02RES, 0.02, 1%, 3 W, 25122512CRA2512-FZ-R020ELFBourns
SH-J111x2Shunt, 100mil, Gold plated, BlackShuntSNT-100-BK-GSamtec
TP1, TP7, TP113Test Point, Multipurpose, Red, THRed Multipurpose Testpoint5010Keystone
TP2, TP8, TP10, TP12, TP135Test Point, Multipurpose, Black, THBlack Multipurpose Testpoint5011Keystone
TP31Test Point, Multipurpose, Blue, THBlue Multipurpose Testpoint5127Keystone
TP41Test Point, Multipurpose, Orange, THOrange Multipurpose Testpoint5013Keystone
TP51Test Point, Multipurpose, Yellow, THYellow Multipurpose Testpoint5014Keystone
TP61Test Point, Multipurpose, Brown, THBrown Multipurpose Testpoint5125Keystone
TP91Test Point, Multipurpose, White, THWhite Multipurpose Testpoint5012Keystone
U11Small, 10MHz 10A, 8V to 14V Input, SWIFT Series Capacitor Step-Down Converter, RNJ0020A (VQFN-HR-20)RNJ0020ATPS54A20RNJRTexas Instruments
C11, C120100uFCAP, CERM, 100 uF, 6.3 V, +/- 20%, X5R, 12061206JMK316BJ107ML-TTaiyo Yuden
C22, C23047uFCAP, CERM, 47 uF, 25 V, +/- 20%, X5R, 1206_1901206_190C3216X5R1E476M160ACTDK
R1047.0kRES, 47.0 k, 1%, 0.1 W, 06030603RC0603FR-0747KLYageo America
R4022.1kRES, 22.1 k, 1%, 0.1 W, 06030603RC0603FR-0722K1LYageo America