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BQ24640: BQ24640

Part Number: BQ24640

Tool/software:

Hi,

1. Input Voltage = 24V , Output Voltage = 12V , Icharge = 3A , We have used supercapacitors 5x25F/2.7V each connected in series

Observation:We are getting ouput voltage 5.82V and feedback voltage is 1V,Based on calculations(equation 1) we have set lower feedback resistor value is 10K and upper feedback resistor value is 47K

we are not getting ouput voltage 12V,So please suggest solution for this problem.please find the below attached schematic  

Regards,

Sreehari.