This TC7920 driver will be driving a piezo electric load which may behave like a capacitive load at certain frequencies. There is another IC TC8220 which is the same except it is not having the drain diodes like TC7920.Please let me know the use of these drain diodes. Can these ICs be relaced with each other for a piezoelctric load?
Another question is the use of damp signal? Is it just to pull the output to ground or any other use?
Link for TC7920: https://www.mouser.in/datasheet/2/268/TC7920_B080613-1532304.pdf Link for TC8220: https://www.mouser.in/datasheet/2/268/TC8220%20B080713-965140.pdf