Software based thermal charging regulation loop
First Claim
1. A method for providing temperature control for integrated circuit components including battery charger circuitry, the method comprising the following steps:
- (1) measuring the temperature of said integrated circuit components with one or more temperature sensors;
(2) generating a digital signal corresponding to said measured temperature; and
(3) adjusting a charging power level at said battery charger circuitry as a function of said measured temperature, wherein steps (1) through (3) are repeated until said measured temperature of said integrated circuit components falls within a predetermined acceptable range.
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Accused Products
Abstract
The present invention implements a software controlled thermal feedback system for battery charging circuitry in portable devices, specifically in cellular telephones. The charging hardware block is integrated into a mixed-signal analog base-band (ABB) circuit. In addition to standard function controls, integrated within the ABB are silicon temperature sensors used to monitor the temperature of any silicon components integrated on the ABB and detect any temperature change due to thermal heating. The temperature value is passed to the digital base band (DBB) circuit. Here, a microcontroller is programmed to perform power management functions relating to the ABB. Thermal control software, implemented on the DBB microcontroller, monitors the silicon temperature of the ABB and adjusts the power levels on the ABB accordingly to provide a controlled chip temperature.
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Citations
28 Claims
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1. A method for providing temperature control for integrated circuit components including battery charger circuitry, the method comprising the following steps:
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(1) measuring the temperature of said integrated circuit components with one or more temperature sensors; (2) generating a digital signal corresponding to said measured temperature; and (3) adjusting a charging power level at said battery charger circuitry as a function of said measured temperature, wherein steps (1) through (3) are repeated until said measured temperature of said integrated circuit components falls within a predetermined acceptable range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for monitoring and controlling thermal temperature in integrated circuit components, the system comprising:
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one or more temperature sensors for measuring a temperature of said integrated circuit components; a converter operably connected to said one or more temperature sensors, said converter adapted to convert said measured temperature to a digital signal; and a control module operably connected to said converter, said module adapted to adjust a power level of one or more of said integrated circuit components as a function of said measured temperature, until said measured temperature of said integrated circuit components falls within a predetermined acceptable range, wherein said integrated circuit components are integrated in an analog base band circuit (ABB) of a cellular telephone. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for providing temperature control for integrated circuit components, the method comprising the following steps:
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(1) measuring the temperature of said integrated circuit components with one or more temperature sensors; (2) generating a digital signal corresponding to said measured temperature; and (3) adjusting at least one power level at one or more select integrated circuit components as a function of said measured temperature, wherein said steps (1) through (3) are repeated until said obtained temperature of said integrated circuit components falls within a predetermined acceptable range. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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28. A system for monitoring and controlling thermal temperature in integrated circuit components, the system comprising:
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one or more temperature sensors for measuring a temperature of said integrated circuit components; a converter operably connected to said one or more temperature sensors, said converter adapted to convert said measured temperature to a digital signal; and a control module operably connected to said converter, said module adapted to adjust a power level of one or more of said integrated circuit components as a function of said measured temperature, until said measured temperature of said integrated circuit components falls within a predetermined acceptable range, wherein; said one or more of said integrated circuit components include battery charging circuitry; said control module is further adapted to control said battery charging circuitry; said control module is further adapted to adjust a charging level of said battery charging circuitry, thereby altering the thermal heat production of said battery charging circuitry; said control module is adapted to adjust the charging power level at said battery charger circuitry by adjusting a duty cycle of said battery charger circuitry; and said control module is integrated in a digital base band circuit (DBB) of a cellular telephone.
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Specification