SLVUBJ0B January   2019  – June 2021 TPS56C230

 

  1.   Trademarks
  2. 1Introduction
  3. 2Performance Specification Summary
  4. 3Modifications
    1. 3.1 Output Voltage Setpoint
    2. 3.2 Mode Selection
  5. 4Test Setup and Results
    1. 4.1  Input/Output Connections
    2. 4.2  Efficiency
    3. 4.3  Output Voltage Load Regulation
    4. 4.4  Output Voltage Line Regulation
    5. 4.5  Load Transient Response
    6. 4.6  Output Voltage Ripple
    7. 4.7  Input Voltage Ripple
    8. 4.8  Loop Characteristics
    9. 4.9  Start-Up
    10. 4.10 Shut-Down
  6. 5Board Layout
    1. 5.1 Layout
  7. 6Schematic, List of Materials, and Reference
    1. 6.1 Schematic
    2. 6.2 List of Materials
  8. 7Revision History

4.2 Efficiency

Figure 4-1 shows the efficiency for the TPS56C230EVM in 500kHz/Eco mode. The ambient temperature is 25 °C.

GUID-C1AAA24C-C906-4994-8B60-60CA60F6AC62-low.gifFigure 4-1 TPS56C230EVM Efficiency at 500-kHz/Eco mode

Figure 4-2 shows the efficiency at light loads for the TPS56C230EVM using a semi-log scale. The ambient temperature is 25 °C.

GUID-4FB0EA7F-9476-4F43-A929-C03EFDB50BEC-low.gifFigure 4-2 TPS56C230EVM Light Load Efficiency at 500-kHz/Eco Mode

The efficiency may be lower at higher ambient temperature, due to temperature variation in the drain-to-source resistance of the internal MOSFET.