Is it possible to use DRV5825P single-ended instead of BTL? i.e. can one connect a piezo load between OUT_A+ and GND instead of OUT_A+ and OUT_A-? More specifically, does each side of the BTL arrangement use a virtual ground that is 1/2PVDD? I can try this on an EVM, but it would be nice to know BEFORE sourcing a $400 PCBA. thanks!