Power control method and apparatus suitable for use in a radio communication device

A portable radio communication device (303) includes power control circuitry (315) for monitoring the voltage level incoming from a battery (317), and provides power to the rest of the radio communication device (303). The power control circuitry (315) includes a boost regulator (407) that is used t...

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Bibliographic Details
Main Authors HIETALA ALEXANDER WAYNE, JANSSEN JOHN JEROME
Format Patent
LanguageEnglish
Published 27.05.2003
Edition7
Subjects
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
GENERATION
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
SYSTEMS FOR STORING ELECTRIC ENERGY
TELEPHONIC COMMUNICATION
TESTING
TRANSMISSION
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Summary:A portable radio communication device (303) includes power control circuitry (315) for monitoring the voltage level incoming from a battery (317), and provides power to the rest of the radio communication device (303). The power control circuitry (315) includes a boost regulator (407) that is used to generate an internal reference signal for use throughout the radio communication device including an analog to digital converter (ADC) for digitizing the battery voltage for use by the power control circuitry (315). The power control circuitry (315) compares the digitized battery voltage to thresholds to control power to the remainder of the radio communication device (303). Additionally, a secondary comparator (413) is provided to prevent damage to the battery and radio communication device circuitry. The secondary comparator uses multiple undervoltage thresholds depending upon the power state of the radio communication device (303).
Bibliography:Application Number: US19950453217