Efficient ultra low drop out power regulator
First Claim
Patent Images
1. A power regulator comprising:
- a first input coupled to a first input voltage;
a second input coupled to a second input voltage, said second input voltage greater than said first input voltage; and
an output stage having an output, said output stage coupled to said first input, said output stage driven by a driver coupled to said second input.
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Abstract
An ultra low drop out power regulator is described. The power regulator may be used, for example, where a dynamically fast, and electrically clean power supply at the point of use is required. The power regulator is provided as a single part with two input voltages. The higher voltage input drive the output stage so that ultra low drop out is achieved. The disclosed regulator is therefore more efficient, resulting in less heat dissipation. The regulator is packaged in a stand up package thereby reducing board space. By use of a stand up package, air flow to other components is not blocked.
21 Citations
22 Claims
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1. A power regulator comprising:
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a first input coupled to a first input voltage; a second input coupled to a second input voltage, said second input voltage greater than said first input voltage; and an output stage having an output, said output stage coupled to said first input, said output stage driven by a driver coupled to said second input. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A computer system comprising a power regulator, said power regulator comprising:
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a first input coupled to a first input voltage; a second input coupled to a second input voltage, said second input voltage greater than said first voltage; an output stage having an output, said output stage coupled to said first input, said output stage driven by a driver coupled to said second input; and
,a load requiring a high speed, electrically dean power supply, said load coupled to said output. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification