SLVUCU8 January   2024

 

  1.   1
  2.    TPS54KC23EVM 30-A, Regulator Evaluation Module
  3.   Trademarks
  4. 1Introduction
    1. 1.1 Background
    2. 1.2 Before You Begin
    3. 1.3 Performance Characteristics Summary
  5. 2Configurations and Modifications
    1. 2.1 Output Voltage
    2. 2.2 Frequency and Operation Mode Setting (MSEL Pin)
  6. 3Test Setup and Results
    1. 3.1 Input/Output Connections
    2. 3.2 Efficiency
    3. 3.3 Output Voltage Regulation
    4. 3.4 Load Transient and Loop Response
    5. 3.5 Output Voltage Ripple
    6. 3.6 Start-up and Shutdown with EN
    7. 3.7 Thermal Performance
  7. 4Board Layout
    1. 4.1 Layout
  8. 5Schematic and Bill of Materials
    1. 5.1 Schematic
    2. 5.2 Bill of Materials

2.2 Frequency and Operation Mode Setting (MSEL Pin)

In the U2 design, jumper J8 can change between MSEL pin selections shown in Table 2-1. If the desired option is unavailable, then change one of the resistors to the value that sets the desired option.

In the U1 design, change the MSEL resistor to the value which sets the desired option.

Table 2-1 MSEL Pin Selection
JUMPER SETTING MSEL RESISTOR (kΩ) OPERATION UNDER LIGHT LOAD SWITCHING FREQUENCY (fSW) (kHz) RAMP
1 to 2 pin shorted 0 FCCM 800 RAMP4
3 to 4 pin shorted 4.99 FCCM 800 RAMP3
5 to 6 pin shorted 7.50 FCCM 800 RAMP2
7 to 8 pin shorted 10.5 FCCM 800 RAMP1
9 to 10 pin shorted 56.2 Skip-mode 800 RAMP4
11 to 12 pin shorted 64.9 Skip-mode 800 RAMP3
13 to 14 pin shorted(1) 75.0 Skip-mode 800 RAMP2
15 to 16 pin shorted 86.6 Skip-mode 800 RAMP1
(1) Default Setting