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US 2007/0192523 A1Published application
Integrated circuit, universal serial bus on-the-go power source and methods for use therewith
AssigneeFreescale Semiconductor, Inc.
InventorMarcus May
Life of this patent
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Abstract
A universal serial bus on-the-go (USB-OTG) power source includes a direct-current to direct-current (DC-to-DC) converter for generating a source voltage when coupled to a battery. A pulse generator generates an oscillating signal when a USB-OTG enable signal is asserted. A power supply module generates a supply voltage from the oscillating signal and the source voltage.
Claims14
A universal serial bus on-the-go (USB-OTG) power source comprising:
- a direct-current to direct-current (DC-to-DC) converter for generating a source voltage when coupled to a battery;
- a pulse generator for generating an oscillating signal when a USB-OTG enable signal is asserted;
- and
- a power supply module for generating a supply voltage from the oscillating signal and the source voltage.
1 more element
An integrated circuit comprising:
- an output pad for coupling an oscillating signal to a universal serial bus on-the-go (USB-OTG) power supply when a USB-OTG enable signal is asserted and for coupling an alternative output signal to an alternative off-chip circuit when the USB-OTG enable signal is deasserted.
A method comprising:
- converting a battery voltage to a substantially stable source voltage;
- and
- generating a supply voltage from an oscillating signal and the source voltage when a USB-OTG enable signal is asserted.
A method comprising:
- coupling an oscillating signal to a universal serial bus on-the-go (USB-OTG) power supply through an output pad of an integrated circuit when a USB-OTG signal is asserted;
- and
- coupling an alternative output signal to an alternative off-chip circuit through an output pad of an integrated circuit when the USB-OTG signal is deasserted.
Dependencies are inferred from the claim text.