IP Library › Granted Patent US 12,237,765
Granted Patent B2
US 12,237,765 · App. 18/194,861 · Granted Feb 25, 2025

DC-DC transformer with inductor for the facilitation of adiabatic inter-capacitor charge transport

Inventor: David Giuliano (Bedford, NH)
Assignee: pSemi Corporation
H02M3/07H02M3/073H02M3/1584
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Quick Facts
Patent No.
US 12,237,765
App. No.
18/194,861
Granted
Feb 25, 2025
Kind
B2
Abstract

In a power converter, a switching network having switches that operate at a common frequency and duty cycle interconnects circuit elements. These circuit elements include capacitors that are in a capacitor network and a magnetic filter. When connected to the capacitors by a switch from the switching network, the magnetic filter imposes a constraint upon inter-capacitor charge transfer between the capacitors to maintain the filter's second terminal at a voltage. The switching network transitions between states. These states include a first state, a second state, and a third state. In both the first state and the third state, the first magnetic-filter terminal couples to the capacitor network. In the second state, which occurs between the first and third state, the switches ground the first magnetic-filter terminal.

Claims (37)

1. A power converter comprising:

a first voltage terminal;

a second voltage terminal;

a switched capacitor network;

a regulator coupled between the switched capacitor network and the second voltage terminal;

an inductance coupled between the switched capacitor network and the second voltage terminal;

a first power path comprising the first voltage terminal, the switched capacitor network, and the regulator;

a second power path comprising the second voltage terminal, the switched capacitor network, and the inductance;

a first set of switches and a second set of switches; and

a controller to close the first set of switches and open the second set of switches to couple the first voltage terminal to a first capacitor of the switched capacitor network in a first state and to close the second set of switches and open the first set of switches to couple the first voltage terminal to a second capacitor of the switched capacitor network in a second state.

2. The power converter of claim 1 , wherein the regulator is configured to provide a first voltage output.

3. The power converter of claim 2 , wherein the inductance is configured to provide a second voltage output.

4. The power converter of claim 3 , wherein the first voltage output is a lower voltage value than the second voltage output.

5. The power converter of claim 3 , wherein the second voltage output is a lower voltage value than the first voltage output.

6. The power converter of claim 1 , wherein in the first state the first capacitor is charged at a first rate and the second capacitor is discharged at a second rate, and wherein in the second state the second capacitor is charged at the first rate and the first capacitor is discharged at the second rate.

7. The power converter of claim 1 , wherein the first set of switches and the second set of switches are configured to switch at substantially the same frequency, and wherein the first set of switches are configured to be open when the second set of switches are configured to be closed and the first set of switches are configured to be closed when the second set of switches are configured to be open.

8. The power converter of claim 7 , wherein more than half of a voltage at the first voltage terminal is processed through the second power path and less than half of the voltage at the first voltage terminal is processed through the first power path.

9. The power converter of claim 1 , wherein more than half of a voltage at the first voltage terminal is processed through the second power path and less than half of the voltage at the first voltage terminal is processed through the first power path.

10. A power converter comprising:

a first voltage terminal;

a second voltage terminal;

a switched capacitor network;

an inductance coupled between the switched capacitor network and the second voltage terminal;

a transformer coupled between the switched capacitor network and the second voltage terminal;

a first power path comprising the first voltage terminal, the switched capacitor network, and the transformer;

a second power path comprising the first voltage terminal, the switched capacitor network, and the inductance; and

a first set of switches and a second set of switches, wherein the first set of switches are configured to be closed and the second set of switches are configured to be open to couple the first voltage terminal to a first capacitor of the switched capacitor network in a first state and wherein the second set of switches are configured to be closed and the first set of switches are configured to be open to couple the first voltage terminal to a second capacitor of the switched capacitor network in a second state.

11. The power converter of claim 10 , wherein the transformer is configured to provide a first voltage output.

12. The power converter of claim 11 , wherein the inductance is configured to provide a second voltage output.

13. The power converter of claim 12 , wherein the first voltage output is a lower voltage value than the second voltage output.

14. The power converter of claim 12 , wherein the second voltage output is a lower voltage value than the first voltage output.

15. The power converter of claim 10 , wherein in the first state the first capacitor is charged at a first rate and the second capacitor is discharged at a second rate, and wherein in the second state the second capacitor is charged at the first rate and the first capacitor is discharged at the second rate.

16. The power converter of claim 10 , wherein the first set of switches and the second set of switches are configured to switch at substantially the same frequency, and wherein the first set of switches are configured to be open when the second set of switches are configured to be closed and the first set of switches are configured to be closed when the second set of switches are configured to be open.

17. The power converter of claim 10 , further comprising a controller to switch between the first state and the second state.

18. The power converter of claim 17 , wherein the controller is configured to switch between the first state and the second state at a frequency.

19. The power converter of claim 18 , wherein more than half of a voltage at the first voltage terminal is processed through the second power path and less than half of the voltage at the first voltage terminal is processed through the first power path.

20. The power converter of claim 10 , wherein more than half of a voltage at the first voltage terminal is processed through the second power path and less than half of the voltage at the first voltage terminal is processed through the first power path.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 3, 2023
From: GIULIANO, DAVID
To: PEREGRINE SEMICONDUCTOR CORPORATION
Reel/Frame 063205/0833 →
CHANGE OF NAME Recorded Apr 3, 2023
From: PEREGRINE SEMICONDUCTOR CORPORATION
To: PSEMI CORPORATION
Reel/Frame 063241/0120 →
Continuity (6)
Continuation 17658193 · Apr 6, 2022
Continuation 16897187 · Jun 9, 2020
Continuation 16260343 · Jan 29, 2019
Continuation 15557970
Provisional Application 62132934 · Mar 13, 2015
Related Publication 20240030813A1 · Jan 25, 2024
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