SLVAFJ1 February   2023 TPS2121

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
    1. 1.1 Design Example Specification
  4. 2Design Considerations
    1. 2.1 Highest Voltage Operation Scheme (VCOMP)
    2. 2.2 Output Voltage Dip and Switchover
    3. 2.3 Overvoltage Calculation
  5. 3Test Results
    1. 3.1 Seamless Switchover from Main Power (IN1) to Backup Power (IN2)
    2. 3.2 Seamless Switchover from Backup Power (IN2) to Main Power (IN1)
  6. 4Summary
  7. 5References

1.1 Design Example Specification

Table 1-1 Design Example Specification
PARAMETERSPECIFICATIONSDETAILS
Main Power (IN1)VIN12 V - 7 V (Solar cell)
Auxiliary Power (IN2)VIN23.6 V (Battery)
Output VoltageVOUTHighest voltage between VIN1 and VIN2

(Minimum : VBAT, Maximum : 7V)

Output CapacitanceCOUT320 µF
Load CurrentIOUT100 mA
Quiescent CurrentISBY (Disabled input)< 50 µA