8.4.17 Current Sharing

When devices operate in dual-phase stackable application, a current sharing loop maintains the current balance between devices. Both devices share the same internal control voltage through VSHARE pin. The sensed current in each phase is compared first in a current share block by connecting ISHARE pin of each device, then the error current is added into the internal loop. The resulting voltage is compared with the PWM ramp to generate the PWM pulse.