SLUUC68A August   2020  – April 2021 TPS563207

 

  1.   Trademarks
  2. 1Introduction
  3. 2Performance Specification Summary
  4. 3Modifications
    1. 3.1 Output 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. 4.6 Input Voltage Ripple
    7. 4.7 Load Transient Response
  6. 5Board Layout
    1. 5.1 Layout
  7. 6Schematic, Bill of Materials, and Reference
    1. 6.1 Schematic
    2. 6.2 Bill of Materials
    3. 6.3 Reference
  8. 7Revision History

3.1 Output Voltage Setpoint

To change the output voltage of the EVMs, it is necessary to change the value of resistor R4. Changing the value of R4 can change the output voltage. The value of R4 for a specific output voltage can be calculated using Equation 1.

Equation 1. GUID-152DEF0C-5766-48B2-8031-723CEA2845A3-low.gif

Table 3-1 lists the R4 values for some common output voltages. Note that the values given in Table 3-1 are standard values and not the exact value calculated using Equation 1.

Table 3-1 Output Voltages
OUTPUT VOLTAGE
(V)		R4
(kΩ)		R6
(kΩ)		TYP L1
(µH)		C5+C6+C7
(µF)		CFF
(pF)
MINTYPMAX
0.850.5510.01.22044110
0.91.210.01.22044110
1.02.410.01.22044110
1.05310.01.22044110
1.24.910.01.52044110
1.58.610.01.52044110
1.812.310.02.22044110
2.52110.02.2204411010-220
3.33110.03.3204411010-220
5.05210.04.7204411010-220
6.570.510.04.7204411010-220