Circuits capable of trickle precharge and/or trickle discharge
First Claim
Patent Images
1. An apparatus comprising:
- a switch; and
switch control circuitry configured to control said switch in a full conduction state and a controllable conduction state, said switch control circuitry is configured to control said switch in said controllable conduction state by comparing an output voltage of said switch to a reference voltage and generating a control signal capable of controlling said conduction state of said switch, said switch control circuitry is further configured to force said output voltage of said switch to approximately equal said reference voltage and to provide a gain to said control signal to cause said switch to operate in a saturation region.
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Abstract
Battery charging circuitry and systems are provided. One embodiment may include at least one switch having a full conduction state and a controllable conduction state and switch control circuitry capable of sensing a condition. The switch control circuitry may further be capable of generating at least one control signal capable of controlling the conduction state of the switch based on, at least in part, the sensed condition.
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Citations
15 Claims
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1. An apparatus comprising:
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a switch; and switch control circuitry configured to control said switch in a full conduction state and a controllable conduction state, said switch control circuitry is configured to control said switch in said controllable conduction state by comparing an output voltage of said switch to a reference voltage and generating a control signal capable of controlling said conduction state of said switch, said switch control circuitry is further configured to force said output voltage of said switch to approximately equal said reference voltage and to provide a gain to said control signal to cause said switch to operate in a saturation region. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system, comprising:
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a battery pack comprising at least one rechargeable battery cell; a switch; and switch control circuitry configured to control said switch in a full conduction state and a controllable conduction state, said switch control circuitry is configured to control said switch in said controllable conduction state by comparing an output voltage of said switch to a reference voltage and generating a control signal capable of controlling said conduction state of said switch, said sensed condition, said switch control circuitry is further configured to force said output voltage of said switch to approximately equal said reference voltage and to provide a gain to said control signal to cause said switch to operate in a saturation region. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method, comprising:
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providing a switch; providing a battery; controlling the conduction state of said switch comprising; a) comparing an output voltage of said switch to a reference voltage; b) generating a control signal capable of controlling said conduction state of said switch; c) forcing said output voltage of said switch to be approximately equal to said reference voltage; and d) providing a gain of said control signal to cause said switch to operate in a saturation region. - View Dependent Claims (14, 15)
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Specification