Circuit arrangement for momentarily maintaining an internal...

Details Circuit arrangement for momentarily maintaining an internal... Circuit arrangement for momentarily maintaining an internal...

2002-11-13

2008-03-11

Sherry, Michael (Department: 2836)

Electrical transmission or interconnection systems

Plural load circuit systems

Plural sources of supply

C307S056000, C307S058000, C307S082000

Reexamination Certificate

active

07342326

ABSTRACT:
A circuit arrangement, to which the vehicle electric system supply voltage is applied and which for briefly maintaining at least one internal normal d.c. voltage in the event of failure of the vehicle electric system supply voltage, includes a reserve energy accumulator, to which a charging voltage higher than the at least one internal normal d.c. voltage is applied in regular operation, and which, in the event of failure of the vehicle electric system supply voltage, delivers a reserve voltage with which operation of at least some electronic circuits may be maintained for a limited period of time, and it includes at least one step-down regulator which steps down the applied input direct voltage to the at least one internal normal d.c. voltage.

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Walter, Bill. “No Space? No Problem for these Tiny, Inductorless, Efficient, Low Noise, 1.8V and 1.5V Step-Down DC/DC Converters”, Linear Technology Magazine, Dec. 2001, pp. 25-26 and 29.

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