Systems and methods for initializing a voltage bus and medical devices incorporating same
First Claim
Patent Images
1. A system, comprising:
- an input interface including a first node and a second node;
a voltage bus including a first voltage rail and a second voltage rail coupled to the second node, the voltage bus having a bus voltage between the first voltage rail and the second voltage rail;
discharge circuitry coupled electrically parallel between the first voltage rail and the second voltage rail;
connection circuitry coupled between the first voltage rail and the first node; and
a control module coupled to the connection circuitry and the discharge circuitry to;
identify a connection condition; and
in response to the connection condition;
activate the discharge circuitry in response to identifying the bus voltage is less than an upper threshold voltage prior to activating the connection circuitry; and
after activating the discharge circuitry, activate the connection circuitry after the bus voltage is discharged below a lower threshold voltage.
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Abstract
Systems, apparatus, and methods are provided for initializing a voltage bus. An exemplary system includes an input interface, a voltage bus, discharge circuitry coupled to the voltage bus, connection circuitry coupled between the voltage bus and the input interface, and a control module coupled to the connection circuitry and the discharge circuitry. The control module activates the discharge circuitry prior to activating the connection circuitry.
240 Citations
31 Claims
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1. A system, comprising:
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an input interface including a first node and a second node; a voltage bus including a first voltage rail and a second voltage rail coupled to the second node, the voltage bus having a bus voltage between the first voltage rail and the second voltage rail; discharge circuitry coupled electrically parallel between the first voltage rail and the second voltage rail; connection circuitry coupled between the first voltage rail and the first node; and a control module coupled to the connection circuitry and the discharge circuitry to; identify a connection condition; and in response to the connection condition; activate the discharge circuitry in response to identifying the bus voltage is less than an upper threshold voltage prior to activating the connection circuitry; and after activating the discharge circuitry, activate the connection circuitry after the bus voltage is discharged below a lower threshold voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for initializing a voltage bus having a bus voltage, the method comprising:
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identifying a connection condition indicative of a desire to provide a power supply voltage from a power supply to the voltage bus; and in response to identifying the connection condition; discharging the voltage bus in response to identifying the bus voltage is less than an upper threshold voltage; and after discharging the voltage bus until the bus voltage is less than a lower threshold voltage, activating connection circuitry coupled between the power supply and the voltage bus to provide the power supply voltage to the voltage bus. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A method for initializing a voltage bus of a portable medical device, the voltage bus having a bus voltage, the method comprising:
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identifying a connection condition; and in response to identifying the connection condition; when the bus voltage is greater than a first threshold voltage, activating connection circuitry coupled between a power supply and the voltage bus; and when the bus voltage is less than the first threshold voltage; discharging the voltage bus until the bus voltage is less than a second threshold voltage; and activating the connection circuitry after the bus voltage is less than the second threshold voltage. - View Dependent Claims (22, 23, 24, 25, 26)
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27. A portable medical device, comprising:
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an interface to be coupled to a power supply; an electronics system including; a voltage bus having a bus voltage; connection circuitry coupled between the voltage bus and the interface; discharge circuitry coupled to the voltage bus; and a control module coupled to the connection circuitry and the discharge circuitry, wherein the control module; identifies a connection condition indicative of a desire to provide a power supply voltage from the power supply to the voltage bus; and in response to identifying the connection condition; activates the discharge circuitry for a first time period in response to identifying the bus voltage is less than an upper threshold voltage to discharge the bus voltage to less than a lower threshold voltage; and thereafter activates the connection circuitry to provide the power supply voltage to the voltage bus. - View Dependent Claims (28, 29, 30, 31)
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Specification