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US 6,441,593 B1Granted
Low noise switching regulator
AssigneeCypress Semiconductor Corporation
InventorSatish C. Saripella
Life of this patent
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Abstract
An apparatus comprising a first device and a second device. The first device may be connected to a first supply voltage. The second device may be connected (i) in series with the first device and (ii) to a second supply voltage. The first device is generally biased to provide enhanced noise suppression performance. The second device is generally configured to switch between the first and second supply voltages.
Claims21
An apparatus comprising:
- a first device connected to a first supply voltage;
- and
- a second device connected in series between said first device and a second supply voltage, wherein said first device is biased to provide enhanced noise suppression performance and said second device is configured to switch between said first and second supply voltages in response to said second supply voltage and a reference signal.
An apparatus comprising:
- means for connecting a first device to a first supply voltage and connecting a second device in series between said first device and a second supply voltage;
- and
- means for biasing said first device to provide enhanced noise suppression performance and said second device is configured to switch between said first and second supply voltages in response to said second supply voltage and a reference signal.
A method for providing a low noise switching regulator, comprising the steps of:
- (A) connecting a first device to a first supply voltage;
- (B) connecting a second device in series between said first device and a second supply voltage;
- and
- (C) biasing said first device to provide enhanced noise suppression performance when said second device is configured to switch between said first and second supply voltages in response to said second supply voltage and a reference signal.
1 more element
An apparatus comprising:
- a first device connected to a first supply voltage, wherein said first device comprises a native device biased to provide enhanced noise suppression performance;
- and
- a second device connected in series between said first device and a second supply voltage, wherein said second device is configured to switch between said first and second supply voltages.
Dependencies are inferred from the claim text.