Browse Prior Art Database

Shared Power Distribution Voltage Protection

IP.com Disclosure Number: IPCOM000013698D
Original Publication Date: 2000-Mar-01
Included in the Prior Art Database: 2003-Jun-18
Document File: 8 page(s) / 218K

Publishing Venue

IBM

Abstract

Disclosed is a device which improves the way power is applied to components in digital systems, including computers and especially servers. The invention will protect the components from receiving power when they might be damaged due to wrong voltage or improper attachment. The invention will also guarantee that proper system parameters necessary for reliable operation are met before power is supplied. The invention will distinguish between part of the system capable of operating reliably and without damage and another part that cannot. It will allow the reliable part to function while protecting from damage other components and preventing errors from occurring (when more than one instantiation of this invention occurs within the system). Relevant Prior Art Note: The voltage produced by A and B are always enabled by the pullup resistor. Figure 1 First example of prior art

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Shared Power Distribution Voltage Protection

  Disclosed is a device which improves the way power is applied to components in digital systems, including computers and especially servers. The invention will protect the components from receiving power when they might be damaged due to wrong voltage or improper attachment. The invention will also guarantee that proper system parameters necessary for reliable operation are met before power is supplied. The invention will distinguish between part of the system capable of operating reliably and without damage and another part that cannot. It will allow the reliable part to function while protecting from damage other components and preventing errors from occurring (when more than one instantiation of this invention occurs within the system).

Relevant Prior Art

Note: The voltage produced by A and B are always enabled by the pullup resistor.

Figure 1 First example of prior art

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Note: The voltage produced by B and C supply power to Component A.

Figure 2 Second example of prior art

Figure 1 depicts a system which does not protect the CPU's from incorrect seating or voltage.

Figure 2 depicts a system which will protect CPUA from damage or operation if CPUA is not seated.

Claims

1. Protects components which may share a common voltage source
2. Prevents components from functioning when correct operation cannot be guaranteed
3. Will allow parts of the system to operate reliably when some parts cannot when two or more instantiations of the invention are implemented.
4. Allows a processor, maintenance processor or system logic to observe and respond to critical conditions

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Description of Invention

Figure 3 The Invention

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Note: The voltage produced by D1, D2 and D3 supplies power to components B1 and B2. D2 is shared between B1 and B2.

Figure 4 The preferred embodiment

Many computers are used to run businesses and make critical calculations. It is imperative that the reliability and correct operation of these systems be preserved. This invention makes improvements in these areas.

The important features of Figure 3 are:

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  1 - interface signals A - interface logic to the system via processor, maintenance processors etc.

  B1, B2 .. Bn - processors or other components C - isolation buffer D1, D2 .. Dn - power producing components Vd1, Vd2 .. Vdn - various voltages output by D1, D2 .. Dn and input to components B1, B2 .. Bn

  Vb1r1, Vb1r2 .. Vb1rn - various encoded voltage requirements for component 1

  Vb2r1, Vb2r2 .. Vb2rn - various encoded voltage requirements for component 2

  Vbnr1, Vbnr2 .. Vbnrn - various encoded voltage requirements for component n

It is important to note that multiple groups as shown in Figure 3 are expected i...