SLVU433A February   2011  – January 2022 TPS53125 , TPS53126 , TPS53127 , TPS53128 , TPS53129

 

  1.   Trademarks
  2. 1 Introduction
    1. 1.1 Description
    2. 1.2 Application
    3. 1.3 Features
  3. 2 Electrical Performance Specifications
  4. 3 Schematics
  5. 4 Connector and Test Point Descriptions
    1. 4.1 Enable Switches (SW1 and SW2)
    2. 4.2 Switching Frequency Select Switch (SW3)
    3. 4.3 Test Point Descriptions
      1. 4.3.1 Input Voltage Monitoring (TP3 and TP9)
      2. 4.3.2 Channel 1 Output Voltage Monitoring (TP4 and TP8)
      3. 4.3.3 Channel 2 Output Voltage Monitoring (TP6 and TP7)
      4. 4.3.4 Soft-Start Voltage Monitoring (TP1, TP2, and TP3)
      5. 4.3.5 Switching Node Monitoring (TP3, TP5, and TP11)
      6. 4.3.6 5-V Regulator Output Monitoring (TP3 and TP10)
  6. 5 Test Setup
    1. 5.1 Equipment
      1. 5.1.1 Voltage Source
      2. 5.1.2 Meters
      3. 5.1.3 Loads
      4. 5.1.4 Oscilloscope and Probe
      5. 5.1.5 Recommended Wire Gauge
      6. 5.1.6 Other Test Equipment
    2. 5.2 Recommended Setup
  7. 6 Test Procedure
    1. 6.1 Start-Up Procedure
    2. 6.2 Line/Load Regulation and Efficiency Measurement Procedure
    3. 6.3 Output Ripple Voltage Measurement Procedure
    4. 6.4 Shutdown Procedure
  8. 7 Performance Data and Typical Characteristic Curves
    1. 7.1 Efficiency
    2. 7.2 Line and Load Regulation
    3. 7.3 Output Voltage Ripple
    4. 7.4 Switch Node Waveforms
  9. 8 EVM Assembly Drawings and Layout
  10. 9 Bill of Materials
  11. 10Revision History

9 Bill of Materials

Table 9-1 contains the bill of materials for TPS53128EVM-620. The reference designators reference the schematic in Figure 3-1 and assembly locations in Figure 8-1 and Figure 8-2. Components with a quantity of 0 listed are not populated on the PCB but are provided for reference.

Table 9-1 TPS53128EVM-620 Bill of Materials
QtyRefDesValueDescriptionSizePart NumberMFR
0C1Capacitor, Aluminum, 25 V, 20%0.328 × 0.390 inchStdStd
0C12, C19, C20, C21Capacitor, Ceramic0603StdStd
1C154.7 μFCapacitor, Ceramic, 10 V, X5R, 20%0805StdStd
1C161 μFCapacitor, Ceramic, 16 V, X5R, 20%0805StdStd
4C2, C3, C4, C510 μFCapacitor, Ceramic, 25 V, X5R, 20%1210StdStd
2C22, C234700 pFCapacitor, Ceramic, Low Inductance, 16 V, X7R, 20%0603StdStd
0C24, C25Capacitor, Ceramic, 25 V, X7R, 20%0603StdStd
2C6, C110.1 μFCapacitor, Ceramic, 50 V, X5R, 10%0603StdStd
6C7, C9, C10, C14, C17, C1847 μFCapacitor, Ceramic, 6.3 V, X5R, 20%1206StdStd
0C8, C13330 μFCapacitor, PXE, 4.0 V, 15 mΩ, 20%7343 (D)APXE4R0ARA331MF61GNIPPON CHEMI-CON
2D1, D2BAT54XV2T1GDiode, Schottky, 200 mA, 30 VSOD523BAT54XV2T1GOn Semi
3J1, J2, J3ED120/2DSTerminal Block, 2-pin, 15-A, 5.1 mm0.40 × 0.35 inchED120/2DSOST
2L1, L23.3 μHInductor, SMT Chip Coil, ±30%8 × 8 mmLQH88PN3R3N38Murata
4Q1, Q2, Q3, Q4CSD17507Q5AMOSFET, N-Chan, 30 V, 65 A, 11.8 mΩQFN-8 POWERCSD17507Q5ATI
1R11.27 kResistor, Chip, 1/16W, 1%0603StdStd
4R10, R4, R6, R810.0 kResistor, Chip, 1/16W, 1%0603StdStd
2R11, R125.11Resistor, Chip, 1/16W, 1%0603StdStd
1R13332Resistor, Chip, 1/16W, 1%0603StdStd
0R14, R15Resistor, Chip, 1/8W, 5%0603StdStd
2R17, R182.00Resistor, Chip, 1/16W, 1%0603StdStd
0R2, R7, R9Resistor, Chip, 1/16W, 1%0603StdStd
1R33.32 kResistor, Chip, 1/16W, 1%0603StdStd
1R512.1 kResistor, Chip, 1/16W, 1%0603StdStd
2SW1, SW2G12AP-ROSwitch, ON-ON Mini Toggle0.28 × 0.18 inchG12AP-RONikkai
0SW3G12AP-ROSwitch, ON-ON Mini Toggle0.28 × 0.18 inchG12AP-RONikkai
4TP1, TP2, TP5, TP115012Test Point, White, Thru Hole0.125 × 0.125 inch5012Keystone
1TP105013Test Point, Orange, Thru Hole0.125 × 0.125 inch5013Keystone
3TP3, TP4, TP65011Test Point, Black, Thru Hole0.125 × 0.125 inch5011Keystone
2TP7, TP85014Test Point, Yellow, Thru Hole0.125 × 0.125 inch5014Keystone
1TP95010Test Point, Red, Thru Hole0.125 × 0.125 inch5010Keystone
1U1TPS53128PWIC, Dual Synchronous Step-Down Controller For Low-Voltage Power RailsTSSOPTPS53128PWTI
1—PCB, 2.70 inch × 3.50 inch × 0.063 inch FR-42.7 inch × 3.5 inchHPA620Any