IP Library › Granted Patent US 12,381,482
Granted Patent B2
US 12,381,482 · App. 18/470,434 · Granted Aug 5, 2025

Power converter with modular stages connected by floating terminals

Inventor: David M. Giuliano (Bedford, NH)
Assignee: pSemi Corporation
H02M3/07H02M1/42H02M1/4225H02M3/00H02M3/158H02M1/007H02M1/4291H02M3/077H02M3/1582Y02B70/10
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Quick Facts
Patent No.
US 12,381,482
App. No.
18/470,434
Granted
Aug 5, 2025
Kind
B2
Abstract

An apparatus for electric power conversion includes a converter having a regulating circuit and switching network. The regulating circuit has magnetic storage elements, and switches connected to the magnetic storage elements and controllable to switch between switching configurations. The regulating circuit maintains an average DC current through a magnetic storage element. The switching network includes charge storage elements connected to switches that are controllable to switch between plural switch configurations. In one configuration, the switches forms an arrangement of charge storage elements in which at least one charge storage element is charged using the magnetic storage element through the network input or output port. In another, the switches form an arrangement of charge storage elements in which an element discharges using the magnetic storage element through one of the input port and output port of the switching network.

Claims (44)

1. A power converter comprising:

a plurality of switches configured to be connected to a plurality of capacitors to form a first switched-capacitor converter and configured to switch between a plurality of switching configurations to charge or discharge the plurality of capacitors such that the first switched-capacitor converter transforms a first voltage into a second voltage, wherein the first switched-capacitor converter is configured to couple to one or more switched-capacitor converters,

wherein the plurality of switches comprises a first set of switches and a second set of switches, wherein, in a first switching configuration of the plurality of switching configurations, the first set of switches are configured to be turned on and the second set of switches are configured to be turned off, and wherein, in a second switching configuration of the plurality of switching configurations, the first set of switches are configured to be turned off and the second set of switches are configured to be turned on,

wherein each switch of the second set of switches is coupled to at least one switch of the first set of switches,

wherein, for each switch of the second set of switches, a node between the switch of the second set of switches and the at least one switch of the first set of switches coupled to the switch of the second set of switches is configured to be connected to a corresponding one of the plurality of capacitors, and

wherein, for each switch of a first subset of the second set of switches, the switch of the first subset and the at least one switch of the first set of switches coupled to the switch of the first subset are coupled between a pair of nodes configured to be coupled to a regulating circuit.

2. The power converter of claim 1 , wherein, for each switch of the first subset of the second set of switches, the node between the switch of the first subset and the at least one switch of the first set of switches coupled to the switch of the first subset is configured to be connected to a negative terminal of the corresponding one of the plurality of capacitors.

3. The power converter of claim 1 , wherein the first subset of the second set of switches comprises:

a first switch coupled to a first node of the pair of nodes, wherein the at least one switch of the first set of switches coupled to the first switch is coupled to a second node of the pair of nodes; and

a second switch coupled to the second node of the pair of nodes, wherein the at least one switch of the first set of switches coupled to the second switch is coupled to the first node of the pair of nodes.

4. The power converter of claim 1 , wherein, for each switch of a second subset of the second set of switches, the node between the switch of the second subset and the at least one switch of the first set of switches coupled to the switch of the second subset is configured to be connected to a positive terminal of the corresponding one of the plurality of capacitors.

5. The power converter of claim 4 , wherein the second subset of the second set of switches comprises a first switch, wherein the at least one switch of the first set of switches coupled to the first switch comprises a second switch and a third switch, wherein the first switch is coupled to the second switch and the third switch, wherein the node between the first switch and the second switch is configured to be connected to the positive terminal of a first capacitor of the plurality of capacitors, and wherein the node between the first switch and the third switch is configured to be connected to the positive terminal of a second capacitor of the plurality of capacitors.

6. The power converter of claim 1 , further comprising a controller configured to control the plurality of switches to cause the plurality of switches to switch between the plurality of switching configurations.

7. The power converter of claim 1 , wherein the one or more switched- capacitor converters comprise a second switched-capacitor converter, wherein the power converter further comprises the second switched-capacitor converter, and wherein the second switched-capacitor converter is serially connected to the first switched-capacitor converter.

8. The power converter of claim 7 , wherein the second switched- capacitor converter comprises:

a second plurality of capacitors; and

a second plurality of switches configured to be connected to the second plurality of capacitors and configured to switch between a second plurality of switching configurations to charge or discharge the second plurality of capacitors, wherein at least one switch of the plurality of switches of the first switched-capacitor converter is connected to at least one switch of the second plurality of switches of the second switched-capacitor converter,

wherein the first switched-capacitor converter and the second switched-capacitor converter are configured to be coupled to the regulating circuit.

9. The power converter of claim 1 , further comprising:

the first switched-capacitor converter comprising the plurality of switches and the plurality of capacitors; and

the regulating circuit coupled to the first switched-capacitor converter.

10. The power converter of claim 9 , wherein:

the regulating circuit is connected to at least one switch of the first set of switches and at least one switch of the second set of switches; and

the regulating circuit is configured to:

receive the second voltage; and

provide a regulated voltage based at least in part on the second voltage to one or more loads.

11. The power converter of claim 9 , wherein the regulating circuit comprises a multi-phase regulating circuit.

12. The power converter of claim 9 , wherein the regulating circuit comprises:

one or more inductors; and

a second plurality of switches, wherein each inductor of the one or more inductors is coupled to at least one switch of the second plurality of switches.

13. The power converter of claim 9 , wherein the one or more switched- capacitor converters comprise a second switched-capacitor converter, wherein the power converter further comprises the second switched-capacitor converter, and wherein the second switched-capacitor converter is serially connected to the first switched-capacitor converter.

14. The power converter of claim 13 , wherein the regulating circuit is further coupled to the second switched-capacitor converter.

15. The power converter of claim 13 , wherein the second switched- capacitor converter comprises:

a second plurality of capacitors; and

a second plurality of switches configured to be connected to the second plurality of capacitors and configured to switch between a second plurality of switching configurations to charge or discharge the second plurality of capacitors, wherein at least one switch of the plurality of switches of the first switched-capacitor converter is connected to at least one switch of the second plurality of switches of the second switched-capacitor converter.

16. The power converter of claim 15 , further comprising one or more controllers configured to control the plurality of switches and the second plurality of switches.

17. A method comprising:

switching a plurality of switches of a first switched-capacitor converter between a plurality of switching configurations to charge or discharge a plurality of capacitors of the first switched-capacitor converter, wherein the first switched-capacitor converter is configured to couple to one or more switched-capacitor converters, wherein the plurality of switches comprises a first set of switches and a second set of switches, wherein, in a first switching configuration of the plurality of switching configurations, the first set of switches are turned on and the second set of switches are turned off, and wherein, in a second switching configuration of the plurality of switching configurations, the first set of switches are turned off and the second set of switches are turned on, wherein each switch of the second set of switches is coupled to at least one switch of the first set of switches, wherein, for each switch of the second set of switches, a node between the switch of the second set of switches and the at least one switch of the first plurality of switches coupled to the switch of the second set of switches is connected to a corresponding one of the plurality of capacitors, and wherein, for each switch of a subset of the second set of switches, the switch of the subset and the at least one switch of the first set of switches coupled to the switch of the subset are coupled between a pair of nodes coupled to a regulating circuit; and

transforming a first voltage into a second voltage based on the switching.

18. The method of claim 17 , wherein the regulating circuit is connected to at least the first switched-capacitor converter, the method further comprising providing, by the regulating circuit, a regulated voltage based at least in part on the second voltage to one or more loads.

19. The method of claim 18 , wherein the one or more switched-capacitor converters comprise a second switched-capacitor converter serially connected to the first switched-capacitor converter, the method further comprising:

switching a second plurality of switches of the second switched-capacitor converter between a second plurality of switching configurations to charge or discharge a second plurality of capacitors of the second switched-capacitor converter; and

transforming a third voltage into a fourth voltage based on the switching the second plurality of switches, wherein a ratio of the first voltage to the second voltage is the same as a ratio of the third voltage to the fourth voltage.

20. The method of claim 19 , wherein the regulating circuit is further connected to the second switched-capacitor converter.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 20, 2023
From: GIULIANO, DAVID M.
To: ARCTIC SAND TECHNOLOGIES, INC.
Reel/Frame 064961/0227 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 20, 2023
From: ARCTIC SAND TECHNOLOGIES, INC.
To: PEREGRINE SEMICONDUCTOR CORPORATION
Reel/Frame 064961/0900 →
CHANGE OF NAME Recorded Sep 20, 2023
From: PEREGRINE SEMICONDUCTOR CORPORATION
To: PSEMI CORPORATION
Reel/Frame 064961/0916 →
Continuity (14)
Continuation 17938350 · Oct 6, 2022
Continuation 17456235 · Nov 23, 2021
Continuation 17187664 · Feb 26, 2021
Continuation 16931768 · Jul 17, 2020
Continuation 16444428 · Jun 18, 2019
Continuation 15618481 · Jun 9, 2017
Continuation 15138692 · Apr 26, 2016
Continuation 14513747 · Oct 14, 2014
Continuation 13771904 · Feb 20, 2013
Continuation PCTUS2012036455 · May 4, 2012
Provisional Application 61577271 · Dec 19, 2011
Provisional Application 61548360 · Oct 18, 2011
Provisional Application 61482838 · May 5, 2011
Related Publication 20240275277A1 · Aug 15, 2024
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