Post Go back to editing

LTM4613 Simulation to reduce Quiescent Current



LTM4613_Tracking.rar My VIN range for  LTM4613 is 22V- 34V. In such a case I expect power loss during low current operation due to quiescent current. In order to avoid the loss i use an LTC3245 charge pump to generate 5V for powering DRVcc. 

1. Is the current rating of LTC3245 sufficient to handle DRVcc of two LTM4613.??(max avg considered is 140mA). Simulation shows 560mA pulse current

2. How should I power LTC6908HS6-1?? from INTVCC of 5.5V or can I power from LTC3245?? Will the noise output of create huge jitters at output of LTC6908HS6-1??

3. Is it mandatory to use Tracking mode?? Can i have independent Soft Start for 3.6V LTM4613?? if so what design change i should consider??