Dynamic voltage scaling system having time borrowing and local boosting capability

摘要

A dynamic voltage scaling system having time borrowing and local boosting capability, including: a time borrowing circuit and a local boost circuit. The time borrowing circuit connected electrically between a primary stage logic circuit and a secondary stage logic circuit is activated by an all-domain clock signal, and then generates an output data to the secondary stage logic circuit based on input data to the primary stage logic circuit. The local boost circuit is connected to a low working voltage line, when input data of the time borrowing circuit lags behind a positive level of said all-domain clock signal, the time borrowing circuit delays fetching data by a flip flop and changes state to produce a warning signal, so that the local boost circuit disconnects its connection with said low working voltage line, and is connected electrically to a high working voltage line.

主权项

1. A dynamic voltage scaling system having time borrowing and local boosting capability, including:
a time borrowing circuit, connected electrically between a primary stage logic circuit and a secondary stage logic circuit, said time borrowing circuit receives an all-domain clock signal, and generates an output data to said secondary stage logic circuit based on input data of said primary stage logic circuit; and a local boost circuit, connected electrically to said time borrowing circuit and said secondary stage logic circuit, and is connected to a low working voltage line, wherein, when said input data lags behind a positive level of said all-domain clock signal, said time borrowing circuit changes its state to produce a warning signal, so that said local boost circuit disconnects its connection to said low working voltage line based on said warning signal, and then is connected electrically to a high working voltage line.