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Direct current power supply unit with high reliability

A DC power supply, reliable technology, applied in the direction of electrical components, electrical components, emergency power supply arrangements, etc., can solve problems such as relatively expensive, isolation problems, circuit board failures, etc.

Active Publication Date: 2010-06-16
LUCENT TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Another problem with diodes is that the loop currents of the two power systems can mix, causing potential isolation problems, which in turn can reduce the reliability of the system
[0007] Both of the above solutions are more expensive and still have the drawback that problems in one of the dual power supplies cannot be completely isolated from the other, which could lead to board failure

Method used

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  • Direct current power supply unit with high reliability
  • Direct current power supply unit with high reliability
  • Direct current power supply unit with high reliability

Examples

Experimental program
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Embodiment Construction

[0024] FIG. 1 is a schematic diagram of a simplex power supply system in the prior art. Power is provided from a first source (6, 7) and a second source (8, 9). The dual power supply provides protection against failure of one of the power supply systems, and isolation diodes (2, 3, 4, 5) prevent failure of one of the power supply systems from affecting the other power supply system. The power module ( 1 ) is depicted in more detail in FIG. 4 .

[0025] Figure 2 is a simplified block diagram of a prior art duplex power supply using the same power module (1) as in Figure 1 . The scheme provides protection against the failure of one of the power modules and against the failure of one of the power supply systems. This solution has no problems related to diodes, but requires paying the cost of two complete power modules.

[0026] image 3 is a simplified block diagram of a power system using the new power module (10) of the present invention. The new power supply module (10) is...

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Abstract

A highly reliable power supply comprises two independent input power train units each connected to a separate primary winding of a common transformer, and an output power train unit connected to the secondary winding of the transformer. A control unit controls how much energy each of the input power train units supplies. Each of the input power train units is connected to a different source of battery power or a different power distribution bus. Advantageously the advantages of full duplication of a power supply are obtained while duplicating only the input power train units. The input power train units are effectively isolated from each other through being connected to separate windings of the transformer.

Description

technical field [0001] The present invention relates to highly reliable power supplies, and more particularly to highly reliable board-mounted power supply modules. Background technique [0002] As the scale of integration has increased over the past few decades, the amount of circuitry that can fit on a single board is enormous. Due to the high number of circuits, every effort must be made to avoid board failure. As an example of a circuit board containing a large number of critical circuits, there is a case of a circuit board used as a DS3 signal interface in a communication network using digital (pulse code modulation) signals. Such a single circuit board couples 672 voice channels. Of course, dropped calls on these channels are highly undesirable. [0003] In any such board, the main weak link is the power supply. Typically, each such board has its own power supply driven by a single battery source. [0004] In the prior art, the most common solution to provide such...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K10/00H02J9/00G05F1/00H02J9/06H02M1/08H02M1/10H02M3/28
CPCH02M1/10H02J9/062F42B12/40F42B12/46
Inventor 查尔斯·C·比尔斯阿瑟·F·克科
Owner LUCENT TECH INC