Douglas L Mattingly

US Patent:

7368959, May 6, 2008

Filed:

Jun 29, 2006

Appl. No.:

11/427654

Inventors:

Jun Xu - McKinney TX, US
Zbigniew Lata - Plano TX, US
Douglas M. Mattingly - Garner NC, US
Bogdan M. Duduman - Raleigh NC, US

Assignee:

Intersil Americas Inc. - Milpitas CA

International Classification:

H03L 7/00

US Classification:

327141, 327540

Abstract:

An IC incorporating a multiphase voltage converter with synchronized phase shift including a phase shift pin, a frequency select pin, a master clock pin, and a voltage regulator. The phase shift pin is coupled to a first voltage for a master mode or a first resistor for a slave mode. The frequency select pin is coupled to one of a second voltage and a second resistor. The master clock pin provides a master clock signal or receives an external clock signal. The IC provides the master clock signal at a frequency determined by the second resistor or otherwise at a default frequency. The voltage regulator operates in the slave mode at a phase shift relative to the external clock signal based on the first resistor and the second resistor or based on the first resistor and a default resistance if the second voltage is coupled.