Power management system with charger/boost controller
First Claim
1. A power management system comprising:
- a power conversion stage comprising a first terminal coupled to a first power source which has a first voltage and comprising a second terminal selectively coupled to a second power source which has a second voltage; and
a controller coupled to said power conversion stage operable for selecting a mode from at least a first mode and a second mode,wherein in said first mode said power conversion stage receives said first voltage at said first terminal and generates a step-up voltage at said second terminal, and wherein in said second mode said power conversion stage receives said second voltage at said second terminal and generates a step-down voltage at said first terminal for charging said first power source, and wherein said step-up voltage is greater than said first voltage and said step-down voltage is less than said second voltage.
1 Assignment
0 Petitions
Accused Products
Abstract
A power management system comprises a power conversion stage and a controller. The power conversion stage has two terminals. The first terminal is coupled to a first power source which provides a first voltage. The second terminal is selectively coupled to a second power source which provides a second voltage. The controller coupled to the power conversion stage can select a mode from at least a first mode and a second mode. In the first mode, the power conversion stage receives the first voltage at the first terminal and generates a step-up voltage at the second terminal. The generated step-up voltage is greater than the first voltage. In the second mode, the power conversion stage receives the second voltage at the second terminal and generates a step-down voltage at the first terminal for charging the first power source. The generated step-down voltage is less than the second voltage.
-
Citations
24 Claims
-
1. A power management system comprising:
-
a power conversion stage comprising a first terminal coupled to a first power source which has a first voltage and comprising a second terminal selectively coupled to a second power source which has a second voltage; and a controller coupled to said power conversion stage operable for selecting a mode from at least a first mode and a second mode, wherein in said first mode said power conversion stage receives said first voltage at said first terminal and generates a step-up voltage at said second terminal, and wherein in said second mode said power conversion stage receives said second voltage at said second terminal and generates a step-down voltage at said first terminal for charging said first power source, and wherein said step-up voltage is greater than said first voltage and said step-down voltage is less than said second voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method for powering a load, comprising:
-
coupling a first power source which has a first voltage to a first terminal; selectively coupling a second power source which has a second voltage to a second terminal; and selecting a mode from at least a first mode and a second mode, wherein in said first mode a power conversion stage receives said first voltage at said first terminal and generates a step-up voltage at said second terminal, and wherein in said second mode said power conversion stage receives said second voltage at said second terminal and generates a step-down voltage at said first terminal for charging said first power source, and wherein said step-up voltage is greater than said first voltage and said step-down voltage is less than said second voltage. - View Dependent Claims (14, 15, 16, 17, 18, 19)
-
-
20. An electronic device comprising:
-
a power conversion stage comprising a first terminal coupled to a first power source which has a first voltage and comprising a second terminal selectively coupled to a second power source which has a second voltage; a load coupled to said second terminal and selectively coupled to said first terminal; and a controller coupled to said power conversion stage operable for selecting a mode from at least a first mode, a second mode, and a third mode, wherein in said first mode said power conversion stage receives said first voltage at said first terminal and generates a step-up voltage at said second terminal for powering said load, and wherein in said second mode said power conversion stage receives said second voltage at said second terminal and generates a step-down voltage at said first terminal for charging said first power source, and wherein in said third mode said first power source powers said load via said first terminal, and wherein said step-up voltage is greater than said first voltage and said step-down voltage is less than said second voltage. - View Dependent Claims (21, 22, 23, 24)
-
Specification