SLUU406A February   2010  – January 2022 CSD16322Q5 , CSD16410Q5A , TPS40303 , TPS40304 , TPS40305

 

  1.   Trademarks
  2. 1Description
    1. 1.1 Applications
    2. 1.2 Features
  3. 2TPS40305EVM-488 Electrical Performance Specifications
  4. 3TPS40305EVM-488 Schematic
  5. 4Connector and Test Point Descriptions
    1. 4.1 Enable Jumper (JP2)
    2. 4.2 Frequency Spread Spectrum – FSS Jumper (JP1)
    3. 4.3 Test Point Descriptions
      1. 4.3.1 Input Voltage Monitoring (TP1 and TP2)
      2. 4.3.2 Output Voltage Monitoring (TP3 and TP4)
      3. 4.3.3 Loop Response Testing (TP5, TP6, TP7, TP8, and R3)
      4. 4.3.4 Error Amplifier Voltage Monitoring (TP9, TP10, and TP11)
      5. 4.3.5 Switching Waveform Monitoring (TP12, TP13, TP14, and TP15)
      6. 4.3.6 Power-Good Voltage Monitoring (TP16 and TP18)
      7. 4.3.7 Enable and Soft-Start Voltage Monitoring (TP17 and TP18)
  6. 5Test Set Up
    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
      5. 5.1.5 Recommended Wire Gauge
      6. 5.1.6 Other
    2. 5.2 Equipment Setup
      1. 5.2.1 Procedure
      2. 5.2.2 Diagram
    3. 5.3 Start-Up/Shutdown Procedure
    4. 5.4 Output Ripple Voltage Measurement Procedure
    5. 5.5 Control Loop Gain and Phase Measurement Procedure
    6. 5.6 Equipment Shutdown
  7. 6TPS40305EVM-488 Test Data
    1. 6.1 Efficiency
    2. 6.2 Line and Load Regulation
    3. 6.3 Output Voltage Ripple
    4. 6.4 Switch Node
    5. 6.5 Control Loop Bode Diagram
    6. 6.6 Additional Waveforms
      1. 6.6.1 Output Ripple with Frequency Spread Spectrum (FSS) Enabled
  8. 7TPS40305EVM-488 Assembly Drawings and Layout
  9. 8TPS40305EVM-488 Bill of Materials
  10. 9Revision History

7 TPS40305EVM-488 Assembly Drawings and Layout

Figure 7-1 through Figure 7-6 show the design of the TPS40305EVM-488 printed circuit board. The EVM has been designed using a 4-layer, 2-oz. copper-clad circuit board 2.5-inch × 2.5-inch with all populated components on the top to allow the user to easily view, probe. and evaluate the TPS40305 control IC in a practical double-sided application. Moving components to both sides of the PCB or using additional internal layers can offer additional size reduction for space constrained systems.

GUID-640A1C4D-9AE6-4288-B4AF-B747F58CC6E6-low.gif Figure 7-1 TPS40305EVM-488 Top Component Placement (Top View)
GUID-1DD1330B-49AB-4448-B68D-7003347A1EC2-low.gif Figure 7-2 TPS40305EVM-488 Silk Screen (Top View)
GUID-1010FF7B-ED7F-4BC4-A137-E99740266F3E-low.gif Figure 7-3 TPS40305EVM-488 Top Copper (Top View)
GUID-91ECE5E1-489E-4455-BE87-1A4A3E8D2FBD-low.gif Figure 7-4 TPS40305EVM-488 Bottom Copper (Top View)
GUID-71D65A6A-B621-4869-9469-723B8C8F200C-low.gif Figure 7-5 TPS40305EVM-488 Internal 1 (X-Ray Top View)
GUID-6BA4B31D-0260-4600-A997-8F0F7F4751A7-low.gif Figure 7-6 TPS40305EVM-488 Internal 2 (X-Ray Top View)