On-board voltage regulators with automatic processor type detect

Details On-board voltage regulators with automatic processor type detect On-board voltage regulators with automatic processor type detect

1996-12-31

1998-05-26

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323285, 39575001, 361764, G05F 140

Patent

active

057571716

ABSTRACT:
An embodiment of the present invention provides a voltage comparator that senses the type of processor, unified or split voltage plane coupled to a mother board. Under the control of at least one multiplexer, voltage regulators supply voltage to the processor. If the processor is a unified voltage plane type, the voltage regulators are coupled together in a master/slave configuration to supply a single voltage to the processor. If the processor is a split voltage plane type, the voltage regulators are coupled to together in a master/master configuration where a core voltage regulator supplies a core voltage to the processor, and an I/O voltage regulator supplies an I/O voltage to the processor. This will allow each regulator to be set at a different voltages to accommodate processor types with different core and I/O voltages.

REFERENCES:
patent: 4992970 (1991-02-01), Igarashi
patent: 5384692 (1995-01-01), Jaff
patent: 5587887 (1996-12-01), Price et al.

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