MULTI-PHASE BATTERY CHARGING WITH BOOST BYPASS
First Claim
1. A method for managing use of a battery in a portable electronic device, comprising:
- operating a charging circuit for converting an input voltage from a power source into a set of output voltages for charging the battery and powering a low-voltage subsystem and a high-voltage subsystem in the portable electronic device; and
during operation of the charging circuit, upon detecting the input voltage from the power source and a low-voltage state in the battery;
using a first inductor group in the charging circuit to down-convert the input voltage to a target voltage of the battery that is lower than a voltage requirement of the high-voltage subsystem; and
using a second inductor group in the charging circuit to up-convert the target voltage to power the high-voltage subsystem.
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Accused Products
Abstract
The disclosed embodiments provide a system that manages use of a battery in a portable electronic device. During operation, the system operates a charging circuit for converting an input voltage from a power source into a set of output voltages for charging the battery and powering a low-voltage subsystem and a high-voltage subsystem in the portable electronic device. Upon detecting the input voltage from the power source and a low-voltage state in the battery during operation of the charging circuit, the system uses a first inductor group in the charging circuit to down-convert the input voltage to a target voltage of the battery that is lower than a voltage requirement of the high-voltage subsystem. The system also uses a second inductor group in the charging circuit to up-convert the target voltage to power the high-voltage subsystem.
51 Citations
25 Claims
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1. A method for managing use of a battery in a portable electronic device, comprising:
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operating a charging circuit for converting an input voltage from a power source into a set of output voltages for charging the battery and powering a low-voltage subsystem and a high-voltage subsystem in the portable electronic device; and during operation of the charging circuit, upon detecting the input voltage from the power source and a low-voltage state in the battery; using a first inductor group in the charging circuit to down-convert the input voltage to a target voltage of the battery that is lower than a voltage requirement of the high-voltage subsystem; and using a second inductor group in the charging circuit to up-convert the target voltage to power the high-voltage subsystem. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A charging system for a portable electronic device, comprising:
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a switching converter comprising a first inductor group and a second inductor group; and a control circuit configured to use the switching converter to convert an input voltage from a power source into a set of output voltages for charging a battery in the portable electronic device and powering a low-voltage subsystem and a high-voltage subsystem in the portable electronic device, wherein upon detecting the input voltage from the power source and a low-voltage state in the battery, the control circuit is further configured to; use the first inductor group to down-convert the input voltage to a target voltage of the battery that is lower than a voltage requirement of the high-voltage subsystem; and use the second inductor group to up-convert the target voltage to power the high-voltage subsystem. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A portable electronic device, comprising:
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a first set of components in a high-voltage subsystem; a second set of components in a low-voltage subsystem; a battery; a switching converter comprising a first inductor group and a second inductor group; and a control circuit configured to use the switching converter to convert an input voltage from a power source into a set of output voltages for charging the battery and powering the low-voltage subsystem and the high-voltage subsystem, wherein upon detecting the input voltage from the power source and a low-voltage state in the battery, the control circuit is further configured to; use the first inductor group to down-convert the input voltage to a target voltage of the battery that is lower than a voltage requirement of the high-voltage subsystem; and use the second inductor group to up-convert the target voltage to power the high-voltage subsystem. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A method for managing use of a battery in a portable electronic device, comprising:
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operating a charging circuit for converting an input voltage from a power source into a set of output voltages for charging the battery and powering a low-voltage subsystem and a high-voltage subsystem in the portable electronic device; and during operation of the charging circuit, upon detecting the input voltage and a low input current from the power source; using a first inductor group in the charging circuit to down-convert the input voltage to a target voltage of the battery that is lower than a voltage requirement of the high-voltage subsystem; and using a second inductor group in the charging circuit to down-convert the input voltage to power the high-voltage subsystem. - View Dependent Claims (25)
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Specification