Part Number:DRV8662
Hello there,
I am facing a problem while realizing the DRV8662 circuit practically.
I want to drive 1µF piezo stack with this driver. My piezo stack operates on 0 to 75V and I want to drive it on step response or DC voltage for around 1Sec. Is it possible with this driver?
I did simulation in TINA spice software below is the simulation result of my circuit.
I got the simulation result for the above circuit as below.
I solder the DRV8662 driver on PCB board shown below and connect the same circuit as shown in TINA schematic.
I gave the same input as shown in a simulation but in an actual circuit on a breadboard, I got the very different result. On the output pin, I got 3.2V as shown below.
We can see from the simulation that, at the FB pin I should get the 1.3V signal instead I got 160mV.
At the capacitor C2 I should get 38.32V as per simulation instead I got 2.32V.
what should be the problem for the error?
