SLVU251B June   2008  – February 2022 TPS51220

 

  1.   Trademarks
  2. 1Description
  3. 2Electrical Performance
  4. 3Schematic
  5. 4Test Setup and Procedure
    1. 4.1 Test Setup
    2. 4.2 Test Procedure
  6. 5Configuration
    1. 5.1 Switching Frequency Selection
    2. 5.2 Skip Mode and Control Scheme Selection
    3. 5.3 Current-Sensing Selection
    4. 5.4 Overcurrent Limit and Discharge Selection
    5. 5.5 Control Mode and Protection Selection
    6. 5.6 Soft-Start Setting Selection
    7. 5.7 Output Voltage Adjustment
  7. 6Bill of Materials
  8. 7EVM Assembly Drawing and PCB Layout
  9. 8Reference
  10. 9Revision History

5.7 Output Voltage Adjustment

Output voltage is programmable by changing R2, R3, and R5 for CH1 and R21, R23, and R24 for CH2.

Default setting is 5 V for CH1 and 3.3 V for CH2.

Equation 1. GUID-A1EEEF7A-F17E-417F-AD04-C658355A8049-low.gif

When Vout(CH1) is set above 5 V, V5SW input resistor (R22) must be open.

Equation 2. GUID-92367AF7-731A-4F5C-97A0-DBC545B4824F-low.gif