I have to convert DC 3.7v to 12v@1-Amp. I have viewed different DC Boost converter datasheets still couldn't find suitable IC for my specific application. Some IC's have lower power dissipation values, some have less output current, Other have lower efficiencies around 1-Amp output.

I am assuming Booster IC to have at least 82~85% efficiency at an output of 12v @ 1Amp and can easily handle input current of 3.2 Amps (3.7V/12watts). I will be glad if someone/recommend me a booster IC for this specific task.

P.S: Correct me if I am wrong. Power dissipation for switching regulator (except external components) can be calculated as [ (Power(input)/efficiency) - Power(input)). e.g. In my case, if the efficiency of booster is 85% then the internal power dissipation would be approx 2watts [(12/0.85 - 12)]? So I have to choose an IC which have power dissipation value greater than 2watts

Thank you.

 

I have to convert DC 3.7v to 12v@1-Amp. I have viewed different DC Boost converter datasheets still couldn't find suitable IC for my specific application. Some IC's have lower power dissipation values, some have less output current, Other have lower efficiencies around 1-Amp output.

I am assuming Booster IC to have at least 82~85% efficiency at an output of 12v @ 1Amp and can easily handle input current of 3.2 Amps (3.7V/12watts). I will be glad if someone/recommend me a booster IC for this specific task.

P.S: Correct me if I am wrong. Power dissipation for switching regulator (except external components) can be calculated as [ (Power(input)/efficiency) - Power(input)). e.g. In my case, if the efficiency of booster is 85% then the internal power dissipation would be approx 2watts [(12/0.85 - 12)]? So I have to choose an IC which have power dissipation value greater than 2watts

Thank you.

Often the components with the high power dissipation are external to the boost IC, so the IC probably won't need a 2 watt power rating.
TI's Web Bench shows 2 IC's that should work for you.
https://webench.ti.com/webench5/pow...digikey&application=SWITCHER&origin=wb_client

 

Often the components with the high power dissipation are external to the boost IC, so the IC probably won't need a 2 watt power rating.
TI's Web Bench shows 2 IC's that should work for you.
https://webench.ti.com/webench5/pow...digikey&application=SWITCHER&origin=wb_client

I have found TPS61089 and 31244f, both are suitable for my application