SLVU445C March   2011  – August 2021 TPS56121

 

  1.   Trademarks
  2. 1 Introduction
  3. 2 Description
    1. 2.1 Applications
    2. 2.2 Features
  4. 3 Electrical Performance Specifications
  5. 4 Schematic
  6. 5 Test Setup
    1. 5.1 Test Equipment
      1. 5.1.1 Voltage Source
      2. 5.1.2 Meters
      3. 5.1.3 Load
      4. 5.1.4 Oscilloscope
      5. 5.1.5 Fan
    2. 5.2 Recommended Wire Gauge
      1. 5.2.1 VIN to J1
      2. 5.2.2 J2 to LOAD
    3. 5.3 Equipment Set Up Procedure
  7. 6 Configurations
    1. 6.1 Enable Selection (J3)
  8. 7 Test Point Descriptions
    1. 7.1 Input Voltage Monitoring (TP1 and TP2)
    2. 7.2 Output Voltage Monitoring (TP3 and TP4)
    3. 7.3 Enable/Soft-start Monitoring (TP5)
    4. 7.4 Power Good Monitoring (TP6)
    5. 7.5 Loop Response Testing (TP7, TP8, TP9 and TP10)
    6. 7.6 Switch Node Voltage Monitoring (TP11 and TP12)
  9. 8 Test Procedures
    1. 8.1 Start Up/Shut Down Procedure
    2. 8.2 Output Ripple Voltage Measurement Procedure
    3. 8.3 Control Loop Gain and Phase Measurement Procedure
    4. 8.4 Equipment Shutdown
  10. 9 Performance Data and Typical Characteristic Curves
    1. 9.1  Efficiency
    2. 9.2  Load Regulation
    3. 9.3  Line Regulation
    4. 9.4  Output Voltage Ripple
    5. 9.5  Switch Node
    6. 9.6  Load Transient
    7. 9.7  Start Up
    8. 9.8  Power Off
    9. 9.9  Over-Current Protection
    10. 9.10 Control Loop Bode Plot
    11. 9.11 Thermal Image
  11. 10EVM Assembly Drawings and PCB Layout
  12. 11List of Materials
  13. 12Revision History

11 List of Materials

Table 11-1 TPS56121EVM-601 List of Materials
QTYREF DESDESCRIPTIONPART NUMBERMFR
4C1, C2, C3, C4Capacitor, ceramic, 25 V, X5R, 20%, 22 µF, 1210StdStd
2C5, C11Capacitor, ceramic, 25 V, X5R, 20%, 1.0 µF, 0805StdStd
0C6Capacitor, aluminum, 16 VDC, ±20%, 100 µF, code D8EEEFP1C101APPanasonic
5C7, C8, C9, C10, C19Capacitor, ceramic, 6.3 V, X5R, 20%, 100 µF, 1210StdStd
1C12Capacitor, ceramic, 10 V, X5R, 20%, 4.7 µF, 0805StdStd
1C13Capacitor, ceramic, 16 V, X7R, 20%, 33 nF, 0603StdStd
1C14Capacitor, ceramic, 50 V, X7R, 20%, 100 nF, 0603StdStd
1C15Capacitor, ceramic, 50 V, X7R, 10%, 2200 pF, 0603StdStd
1C16Capacitor, ceramic, 50 V, C0G, 5%, 100 pF, 0603StdStd
1C17Capacitor, ceramic, 50 V, C0G, 5%, 680 pF, 0603StdStd
1C18Capacitor, ceramic, 50 V, X7R, 20%, 1000 pF, 0603StdStd
0C20, C21Capacitor, ceramic, 6.3 V, X5R, 20%, 100 µF, 1210StdStd
2J1, J2Terminal block, 4 pin, 15 A, 5.1 mm, 0.80 inch x 0.35 inchED120/4DSOST
1J3Header, male 2 pin, 100-mil spacing, 0.100 inch x 2 inchPEC02SAANSullins
1L1Inductor, 440 nH, 30 A, 0.32 mΩ, 440 nH, 0.530 inch x 0.510 inchPA0513.441NLTPulse
1R1Resistor, chip, 1/16 W, 1%, 1.78 kΩ, 0603StdStd
1R2Resistor, chip, 1/16 W, 1%, 5.10 Ω, 0603StdStd
1R3Resistor, chip, 1/16 W, 1%, 7.87 kΩ, 0603StdStd
1R4Resistor, chip, 1/16 W, 1%, 20.5 kΩ, 0603StdStd
1R5Resistor, chip, 1/16 W, 1%, 49.9 Ω, 0603StdStd
1R6Resistor, chip, 1/16 W, 1%, 1.00 kΩ, 0603StdStd
1R7Resistor, chip, 1/16 W, 1%, 30.1 kΩ, 0603StdStd
1R8Resistor, chip, 1/16 W, 1%, 0 kΩ, 0603StdStd
1R9Resistor, chip, 1/8 W, 1%, 1.00 Ω, 0805StdStd
1R10Resistor, chip, 1/16 W, 1%, 100 kΩ, 0603StdStd
3TP1, TP3, TP11Test point, red, thru hole, 0.125 inch x 0.125 inch5010Keystone
5TP2, TP4, TP8, TP9, TP12Test point, black, thru hole, 0.125 inch x 0.125 inch5011Keystone
2TP5, TP6Test point, yellow, thru hole, 0.125 x 0.125 inch5014Keystone
2TP7, TP10Test point, white, thru hole, 0.125 x 0.125 inch5012Keystone
1U14.5-V to 14-V Input 15-A Synchronous Buck Converter, QFN-22 6 mm x 5 mmTPS56121DQPTI
1--PCB, 2.5 inch x 2.5 inch x 0.062 inchHPA601Any
1--Shunt, 100 mil, black, 0.100929950-003M