Implantable infusion device having selective voltage boost circuit with charge pump circuit for generating control signals using first and second profiles
First Claim
1. An implantable infusion device comprising:
- a voltage boost circuit configured to selectively generate an output voltage by boosting a first voltage provided by a battery, the voltage boost circuit including;
a signal generation circuit configured to generate control signals, anda charge pump circuit configured to generate the output voltage in response to the control signals,wherein in response to a request for a predetermined voltage, the signal generation circuit is configured to;
generate the control signals using a first profile for a first period of time, andgenerate the control signals using a second profile for a second period of time subsequent to the first period of time,wherein the charge pump circuit is configured to increase the output voltage to;
an intermediate voltage less than the predetermined voltage in response to the first profile of the control signals, andthe predetermined voltage in response to the second profile of the control signals.
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Accused Products
Abstract
An implantable infusion device includes a voltage boost circuit configured to selectively generate an output voltage from a first voltage provided by a battery. The voltage boost circuit includes a signal generation circuit configured to generate control signals and a charge pump circuit configured to generate the output voltage in response to the control signals. In response to a request for a predetermined voltage, the signal generation circuit generates the control signals using a first profile for a first period of time, and generates the control signals using a second profile for a second period of time subsequent to the first period. The charge pump circuit increases the output voltage to (i) an intermediate voltage less than the predetermined voltage in response to the first profile of the control signals, and (ii) the predetermined voltage in response to the second profile of the control signals.
24 Citations
21 Claims
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1. An implantable infusion device comprising:
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a voltage boost circuit configured to selectively generate an output voltage by boosting a first voltage provided by a battery, the voltage boost circuit including; a signal generation circuit configured to generate control signals, and a charge pump circuit configured to generate the output voltage in response to the control signals, wherein in response to a request for a predetermined voltage, the signal generation circuit is configured to; generate the control signals using a first profile for a first period of time, and generate the control signals using a second profile for a second period of time subsequent to the first period of time, wherein the charge pump circuit is configured to increase the output voltage to; an intermediate voltage less than the predetermined voltage in response to the first profile of the control signals, and the predetermined voltage in response to the second profile of the control signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An implantable infusion device comprising:
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a voltage boost circuit configured to selectively generate an output voltage from a first voltage provided by a battery; and a pump configured to be actuated from the output voltage; wherein the voltage boost circuit includes; a signal generation circuit configured to generate (i) first control signals for a first period of time and (ii) second control signals for a second period of time; and a charge pump circuit configured to generate the output voltage in response to the first and second control signals; and wherein the charge pump circuit; includes a first capacitor and a second capacitor; in response to the first control signals, selectively increases the output voltage to a predetermined voltage using the first capacitor and the second capacitor; and in response to the second control signals, selectively increases the output voltage to an intermediate voltage that is less than the predetermined voltage using the first capacitor exclusive of the second capacitor. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification