niks
Full Member level 3
![Full Member level 3](/styles/images/ranks/elevel3.gif)
hi
im designing boost converter Vin = 2.7 and Vout = 45 V with Piezo cap. as load. Just now the efficiency is around 45-50 %. I also tried to use dynamic PWM, but i found that its also not much of use. timebeing im using 1mH inductor with DC resi. 2-3 ohm. and N channel FET controlled by PWM.
in this design im very particular about power consumption. just now inductor current is 150mA and piezo takes 3.2ms to reach 45V at 17.5KHz.
how can i improve the efficiency ???
thanx and regards
~niks~
im designing boost converter Vin = 2.7 and Vout = 45 V with Piezo cap. as load. Just now the efficiency is around 45-50 %. I also tried to use dynamic PWM, but i found that its also not much of use. timebeing im using 1mH inductor with DC resi. 2-3 ohm. and N channel FET controlled by PWM.
in this design im very particular about power consumption. just now inductor current is 150mA and piezo takes 3.2ms to reach 45V at 17.5KHz.
how can i improve the efficiency ???
thanx and regards
~niks~