I am using the DRV2667 in a battery-powered device in which current is a major constraint. In my current setup, the waveform generator does not work if the current supplied is less than about 60 mA, though the boost converter works down to around 5 mA. I would like to know how the parameters of the design can be used to minimize the current needed to work. The following is the values I am currently using:
Vdd = 3.3V
Cvdd = 100u
Cbst = 0.1u
Creg = 1u
Cpump = 0.1u
R1 = 768k
R2 = 13k
Rext = 7.67k
L1 = 472u