Power converter with capacitive energy transfer and fast dynamic response
First Claim
Patent Images
1. A voltage regulator configured to receive a first voltage signal at an input thereof and generate a second voltage signal at an output thereof with the second voltage signal based, at least in part, on the first voltage signal, the voltage regulator comprising:
- a switched magnetic stage comprising;
an input terminal corresponding to the input of the voltage regulator, the switched magnetic stage input terminal configured to receive the first voltage signal;
a magnetic storage element; and
an output terminal;
the switched magnetic stage configured to provide a first output voltage signal at the output terminal based, at least in part, on the first voltage signal received at the input terminal; and
a switched capacitor converter comprising;
at least one input terminal; and
an output terminal, wherein the switched capacitor converter is configured to receive, at the at least one input terminal, an input voltage signal for a portion of a time period, and to provide a second output voltage signal at the switched capacitor converter output terminal based, at least in part, on the received input voltage signal,wherein the second voltage signal is based, at least in part, on the first output voltage signal and the second output voltage signal.
1 Assignment
0 Petitions
Accused Products
Abstract
A converter circuit and related technique for providing high power density power conversion includes a reconfigurable switched capacitor transformation stage coupled to a magnetic converter (or regulation) stage. The circuits and techniques achieve high performance over a wide input voltage range or a wide output voltage range. The converter can be used, for example, to power logic devices in portable battery operated devices.
244 Citations
11 Claims
-
1. A voltage regulator configured to receive a first voltage signal at an input thereof and generate a second voltage signal at an output thereof with the second voltage signal based, at least in part, on the first voltage signal, the voltage regulator comprising:
-
a switched magnetic stage comprising; an input terminal corresponding to the input of the voltage regulator, the switched magnetic stage input terminal configured to receive the first voltage signal; a magnetic storage element; and an output terminal; the switched magnetic stage configured to provide a first output voltage signal at the output terminal based, at least in part, on the first voltage signal received at the input terminal; and a switched capacitor converter comprising; at least one input terminal; and an output terminal, wherein the switched capacitor converter is configured to receive, at the at least one input terminal, an input voltage signal for a portion of a time period, and to provide a second output voltage signal at the switched capacitor converter output terminal based, at least in part, on the received input voltage signal, wherein the second voltage signal is based, at least in part, on the first output voltage signal and the second output voltage signal. - View Dependent Claims (2, 3)
-
-
4. A power converter circuit comprising:
-
a reconfigurable switched capacitor transformation stage having a transformation stage input port and a transformation stage output port and comprising one or more capacitive storage elements, the reconfigurable switched capacitor transformation stage configured to accept an input voltage at the transformation stage input port and provide an intermediate voltage at the transformation stage output port; and a regulation stage having a regulation stage input port and a regulation stage output port and comprising a plurality of switches and one or more magnetic storage elements, the regulation stage configured to accept the intermediate voltage provided by the reconfigurable switched capacitor transformation stage and configured to provide an output voltage at the regulation stage output port and wherein the plurality of switches in the regulation stage operate at a switching frequency which is different than a switching frequency of the plurality of switches in the reconfigurable switched capacitor transformation stage. - View Dependent Claims (5)
-
-
6. An integrated circuit comprising:
-
a reconfigurable switched capacitor transformation stage having a transformation stage input port and a transformation stage output port and comprising a plurality of integrated switches and interconnections to one or more storage elements, the reconfigurable switched capacitor transformation stage configured to accept an input voltage at the transformation stage input port and provide an intermediate output voltage at the transformation stage output port; and a regulation stage having a regulation stage input port and a regulation stage output port and comprising a plurality of integrated switches implemented as base transistors of a CMOS process and interconnections to one or more storage elements, the regulation stage configured to accept the intermediate output voltage provided by the reconfigurable switched capacitor transformation stage and configured to provide an output voltage at the regulation stage output port. - View Dependent Claims (7, 8, 9, 10, 11)
-
Specification