Controlling the common mode voltage of a non-isolated buck-boost converter
First Claim
1. A switching power stage for producing an output voltage to a load, comprising:
- a power converter comprising a power inductor and plurality of switches arranged to sequentially operate in a plurality of switch configurations; and
a controller configured to;
select a selected operational mode of the power converter from a plurality of operational modes, the plurality of operational modes comprising at least;
a first operational mode in which a first terminal of the load is at a voltage potential lower than that of a first terminal of a power source to the power converter, the first terminal of the load is at a voltage potential higher than that of a second terminal of the power source, and a second terminal of the load is at a voltage potential higher than that of the second terminal of the power source; and
a second operational mode in which only one of the first terminal of the load and the second terminal of the load has a low resistance path to one of the first terminal of the power source and the second terminal of the power source; and
sequentially apply switch configurations from the plurality of switch configurations to selectively activate or deactivate each of the plurality of switches in order to transfer electrical energy from an input source of the power converter to the load in accordance with the selected operational mode.
1 Assignment
0 Petitions
Accused Products
Abstract
A switching power stage for producing an output voltage to a load may include a power converter and a controller. The power converter may include a power inductor and plurality of switches arranged to sequentially operate in a plurality of switch configurations. The controller may be configured to, based at least on an input signal to the switching power stage, determine the differential output voltage to be driven at the load, and based on the differential output voltage to be driven at the load, apply a switch configuration from the plurality of switch configurations to selectively activate or deactivate each of the plurality of switches in order to generate the differential output voltage.
81 Citations
38 Claims
-
1. A switching power stage for producing an output voltage to a load, comprising:
-
a power converter comprising a power inductor and plurality of switches arranged to sequentially operate in a plurality of switch configurations; and a controller configured to; select a selected operational mode of the power converter from a plurality of operational modes, the plurality of operational modes comprising at least; a first operational mode in which a first terminal of the load is at a voltage potential lower than that of a first terminal of a power source to the power converter, the first terminal of the load is at a voltage potential higher than that of a second terminal of the power source, and a second terminal of the load is at a voltage potential higher than that of the second terminal of the power source; and a second operational mode in which only one of the first terminal of the load and the second terminal of the load has a low resistance path to one of the first terminal of the power source and the second terminal of the power source; and sequentially apply switch configurations from the plurality of switch configurations to selectively activate or deactivate each of the plurality of switches in order to transfer electrical energy from an input source of the power converter to the load in accordance with the selected operational mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A switching power stage for producing a differential output voltage to a load, comprising:
-
a power converter comprising a power inductor and plurality of switches arranged to sequentially operate in a plurality of switch configurations, wherein the plurality of switch configurations includes a first configuration in which the power converter only drives a first terminal of the load and a second configuration in which the power converter only drives a second terminal of the load; and a controller configured to; based at least on an input signal to the switching power stage, determine the differential output voltage to be driven at the load, wherein the differential output voltage equals a difference between a first voltage potential at the first terminal of the load and a second voltage potential at the second terminal of the load and wherein the differential output voltage is substantially different from each of the first voltage potential and the second voltage potential; and based on the differential output voltage to be driven at the load, apply a switch configuration from the plurality of switch configurations to selectively activate or deactivate each of the plurality of switches in order to generate the differential output voltage. - View Dependent Claims (16, 17, 18, 19)
-
-
20. A method for producing an output voltage to a load, comprising:
-
selecting a selected operational mode for a power converter comprising a power inductor and plurality of switches arranged to sequentially operate in a plurality of switch configurations, the plurality of operational modes comprising at least; a first operational mode in which a first terminal of the load is at a voltage potential lower than that of a first terminal of a power source to the power converter, the first terminal of the load is at a voltage potential higher than that of a second terminal of the power source, and a second terminal of the load is at a voltage potential higher than that of the second terminal of the power source; and a second operational mode in which only one of the first terminal of the load and the second terminal of the load has a low resistance path to one of the first terminal of the power source and the second terminal of the power source; and sequentially applying switch configurations from the plurality of switch configurations to selectively activate or deactivate each of the plurality of switches in order to transfer electrical energy from an input source of the power converter to the load in accordance with the selected operational mode. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
-
-
34. A method for producing an output voltage to a load, comprising:
-
based at least on an input signal to a switching power stage for producing a differential output voltage to a load, wherein the switching power stage comprises a power inductor and plurality of switches arranged to sequentially operate in a plurality of switch configurations and wherein the plurality of switch configurations includes a first configuration in which the power converter only drives a first terminal of the load and a second configuration in which the power converter only drives a second terminal of the load, determining the differential output voltage to be driven at the load, wherein the differential output voltage equals a difference between a first voltage potential at a first terminal of the load and a second voltage potential at a second terminal of the load and wherein the differential output voltage is substantially different from each of the first voltage potential and the second voltage potential; and based on the differential output voltage to be driven at the load, applying a switch configuration from the plurality of switch configurations to selectively activate or deactivate each of the plurality of switches in order to generate the differential output voltage. - View Dependent Claims (35, 36, 37, 38)
-
Specification