In Figure 17 (page 18 ) UCC3626 datasheet , i have some questions ?
At pin 20 (QUAD) of U1 , why does Vref connect to GND ???
At pin 1 (GND ) of U1 , why does GND not connect ???
At Hall sensor, Why we need a RC network ???
Is value of Vref 5V ???
Thanks for your help.