SLVU446B March   2011  – July 2021 TPS56221

 

  1. 1 Introduction
  2. 2 Description
    1. 2.1 Applications
    2. 2.2 Features
  3. 3 Electrical Performance Specifications
  4. 4 Schematic
  5. 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
  6. 6 Configurations
    1. 6.1 Enable Selection (J3)
  7. 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)
  8. 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
  9. 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
  10. 10EVM Assembly Drawings and PCB Layout
  11. 11List of Materials
  12. 12Revision History

10 EVM Assembly Drawings and PCB Layout

The following figures (Figure 10-1 through Figure 10-6) show the design of the TPS56221EVM-579 printed circuit board. The EVM has been designed using a 4-layer, 2-oz copper-clad circuit board 2.5” x 2.5” with components on both sides of the PCB to allow the user to view, probe and evaluate the TPS56221 high current converter with integrated FETs in a small form factor, high-current application.

GUID-061C1CC9-2C40-466B-B4DB-634675345F44-low.gifFigure 10-1 TPS56221EVM-579 Top Assembly Drawing (top view)
GUID-72FD48D4-DC18-4547-B320-1F54BDEFB32F-low.gifFigure 10-2 TPS56221EVM-579 Bottom Assembly Drawing (bottom view)
GUID-31AB40E6-3A69-4D0F-97C6-A797D137AFFC-low.gifFigure 10-3 TPS56221EVM-579 Top Copper (top view)
GUID-5C1DF33E-3044-4483-85E0-C2FB0B0D9250-low.gifFigure 10-4 TPS56221EVM-579 Internal 1 (top view)
GUID-85415D5C-EF62-4678-BEE8-BB9B60268F16-low.gifFigure 10-5 TPS56221EVM-579 Internal 2 (top view)
GUID-10210BFD-4D02-4C80-9124-881300313989-low.gifFigure 10-6 TPS56221EVM-579 Bottom Copper (top view)