Multiple Function Switching Regulator for Use in Mobile Electronic Devices
First Claim
Patent Images
1. A mobile electronic device operable to employ a rechargeable battery as a power source, the mobile electronic device including:
- a peripheral port suitable for connecting an external device to the mobile electronic device; and
a switching converter operable in a first mode as a battery charger to recharge the battery from an external power source and further operable in a second mode as a boost converter to power the external device from battery supplied power.
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Abstract
Multiple Function Switching Regulator for Use in Mobile Electronic Devices A mobile electronic device operable to employ a rechargeable battery as a power source includes a peripheral port suitable for connecting an external device to the mobile electronic device and a power management device operable in a first mode as a battery charger to recharge the battery from an external power source and further operable in a second mode as a boost converter to power the external device from battery supplied power where the boost converter and the battery charger are provided by a single switching-converter.
87 Citations
20 Claims
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1. A mobile electronic device operable to employ a rechargeable battery as a power source, the mobile electronic device including:
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a peripheral port suitable for connecting an external device to the mobile electronic device; and a switching converter operable in a first mode as a battery charger to recharge the battery from an external power source and further operable in a second mode as a boost converter to power the external device from battery supplied power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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- 12. A switching DC converter suitable for use in a mobile electronic device wherein the converter is operable, in a first mode, to recharge a battery of the mobile electronic device from an external power source and further operable, in a second mode, to power an external device connected to a peripheral port of the mobile electronic device from a battery of the mobile electronic device, wherein an energy storage element employed in the first mode and an energy storage element employed in the second mode are the same energy storage element.
- 16. A power management integrated circuit (PMIC) of a mobile electronic device, the PMIC operable in a first mode as a switch-mode battery charger for recharging a battery of the mobile electronic device and operable in a second mode as a boost converter for powering an external device connected to the mobile electronic device wherein the first mode and the second mode employ a common inductor.
Specification