SLUUC75B May   2020  – June 2021 TPS566238

 

  1.   Trademarks
  2. 1Introduction
  3. 2Performance Specification Summary
  4. 3Output Voltage Setpoint
  5. 4Test Setup and Results
    1. 4.1 Input/Output Connections
    2. 4.2 Start-Up Procedure
    3. 4.3 Start-Up
    4. 4.4 Shut-Down
    5. 4.5 Output Voltage Ripple
  6. 5Board Layout
    1. 5.1 Layout
  7. 6Board Profile, Schematic, List of Materials, and Reference
    1. 6.1 Board Profile
    2. 6.2 Schematic
    3. 6.3 List of Materials
    4. 6.4 Reference
  8. 7Revision History

3 Output Voltage Setpoint

To change the output voltage of the EVM, it is necessary to change the value of resistor R4 (Rupper) and R5 (Rlower). The value of R4 and R5 for a specific output voltage can be calculated using Equation 1 and refer to Table 3-1 for some recommendation values.

Equation 1. GUID-70F7FC62-93F2-4585-835E-7323E5F5533C-low.gif
Table 3-1 Recommended Component Values
VOUT (V) RLOWER (kΩ) RUPPER (kΩ) LOUT (µH) COUT (µF) CFF (PF)
MIN TYP MAX MIN MAX
0.6 10 0 0.68 1 4.7 44 220 -
1 30 20 0.68 1 4.7 44 220 -
1.8 20 40 1 1.5 4.7 44 220 0-50
3.3 20 90 1.5 2.2 4.7 44 220 10-100
5.0 30 220 1.5 2.2 4.7 44 220 10-100