SBVS343 March 2019 TPS7A78
ADVANCE INFORMATION for pre-production products; subject to change without notice.
The device has an internally controlled, (clamped), full-bridge rectifier that is designed to maintain the rectified DC voltage level at CSCIN capacitor for optimal efficiency at a given output voltage. The active clamp circulates the excessive AC charging current supplied from the Cap-Drop capacitor through the AC supply Neutral line when CSCIN capacitor reached its operational voltage level. A DC Supply could be used to power the device directly on SCIN pin which completely bypasses the active bridge and clamp circuit.