L99ASC03 internal voltage regulator

[fggnrc2]

Posted on May 11, 2014 at 10:57

I'm evaluating L99ASC03 to control a brushless motor which drives a propeller.

A series of LiPo accumulators will supply the board. The supply voltage is about 7V when 2 LiPo accumulators are used. When more LiPo accumulators are used, supply voltage increases up to 25 V in 3.7V steps. This supply voltage range matches the L99ASC03 internal +5V voltage regulator limits, but it may waste too much power when many LiPo are used. Is it possible to connect the +5V output of a switching regulator to the VSREG input while VS and VSMS are directly connected to the LiPo accumulators? Regards EtaPhi #bldc-motor-control #l99asc03

[Brugus]

Posted on May 14, 2014 at 12:25

Hi EtaPhi,

it is possible to implement your configuration. Best regards, Marco

[fggnrc2]

Posted on May 14, 2014 at 13:12

Thanks, Marco!