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

5.6 Soft-Start Setting Selection

Output voltage soft-start time can be set by the ENx pin using some capacitors on the EVM.

Default setting is integrated soft start.

Table 5-7 Soft-Start Setting Selection(1)
CH1 (C20)CH2 (C7)
Integrated soft startOpen (adding small bypass-capacitor; 100 pF)Open (adding small bypass-capacitor; 100 pF)
External soft startPut onPut on
(1) When external soft start is selected, add appropriate capacitor on C20 and/or C7.)