Applications

IDC2000 Applications for UPS

Enhancing a Line Interactive Uninterruptible Power Supply with the UPMC

The following block diagram shows a line interactive UPS powered by a controller of the IDC2000 family devices providing a high-speed, cost effective solution.

UPS

This solution provides superior performances showing high dynamic response and stable sine wave with low THD. A unique fast transition from mains to batteries is achieved by means of the DPLL module comprised in the UPMC. This DPLL, in combination with the high resolution control provided by the UPMC, allows a precise mains voltage measurement and an excellent phase lock to mains with a 10µSec time window for zero cross detection. This, together with an output sine wave always being synchronized to mains, allows a smooth transition from battery to mains and vice versa without any harmful overshoots or undershoots at any load type and conditions.
To mention one of the many other advantages provided by the UPMC - the power switches in this application are precisely protected pulse by pulse current limit thus allowing longer Mean Time Between Failure (MTBF).
The digital capabilities of this controller allow achieving component count and cost optimization in the power circuit design. In addition, further component cost reduction is achieved by using an IDC20XX controller that comprises all the power and management control functions and interfaces in a single chip. Additional advantage is high flexibility in future changes and upgrades which will only necessitate configuration and parameters modification with the existing unit.