HIGH OUTPUT CURRENT SPLIT PACKAGE A/C ADAPTER

• US 20090161395A1
• Filed: 12/20/2008
• Published: 06/25/2009
• Est. Priority Date: 12/20/2007
• Status: Active Grant

• Current Assignee: Inventronics (Hangzhou), Inc.
• Original Assignee: Inventronics (Hangzhou), Inc.
• Inventors: Hua, Guichao
• Granted Patent: US 8,867,250 B2
• Time in Patent Office: Days
• US Class Current: 363/89
• CPC Class Codes: H02M 1/007 Plural converter units in cascade push-pull DC/DC converters with pre-regulator H02M3/3374; DC-AC converters following a DC-DC stage including a high frequency transformer H02M7/4807; DC-AC converters following a DC-DC conversion stage generating periodically varying voltages H02M7/4826
• CPC Class Codes: H02M 3/156 with automatic control of output voltage or current, e.g. switching regulators
• CPC Class Codes: H02M 3/33507 with automatic control of the output voltage or current, e.g. flyback converters H02M3/33561, H02M3/33569 take precedence

Abstract

A power adapter, including an AC input terminal, an AC-DC power converter, a DC-DC power converter, and an output terminal, wherein the AC-DC power converter and the DC-DC power converter are separate components, and wherein the power AC input terminal, AC-DC power converter, DC-DC power converter and the output terminal are connected sequentially via a plurality of cords.

Claims

1. A power adapter comprising:

an AC input terminal;

an AC-DC power converter;

a DC-DC power converter separated from the AC-DC power converter; and

an output terminal;

wherein the power AC input terminal, AC-DC power converter, DC-DC power converter and the output terminal are connected sequentially via a plurality of cords.

2. The power adapter of claim 1, wherein the AC-DC power converter comprises a rectification circuit and an isolated DC-DC conversion circuit, and wherein the rectification circuit is at a fore end of the AC-DC power converter and is followed by the isolated DC-DC conversion circuit, and wherein the rectification circuit converts an AC voltage into a high DC voltage which will be converted by the isolated DC-DC conversion circuit into a desired DC voltage at the output terminal.

3. The power adapter of claim 1, wherein the AC-DC power converter comprises a rectification circuit and a PFC power factor correction circuit, and wherein the rectification circuit is at a fore end of the AC-DC power converter and is followed by the PFC power factor correction circuit, and wherein the rectification circuit converts an AC voltage into a high DC voltage, which is converted into the high DC voltage at the output terminal by the PFC power factor correction circuit.

4. The power adapter of claim 1, wherein the DC-DC power converter comprises a DC-DC conversion circuit, and wherein the DC-DC conversion circuit is either an isolated DC-DC conversion circuit or a non-isolated DC-DC conversion circuit.

5. The power adapter of claim 1, wherein the AC-DC power converter and the DC-DC power converter are connected via at least one removable cord and/or at least one permanent cord.

6. The power adapter of claim 1, wherein the AC-DC power converter and the AC input terminal are packaged in a single component.

7. The power adapter of claim 1, wherein the AC-DC power converter and the AC input terminal are separate components and are connected via at least one cord.

8. The power adapter of claim 1, wherein the cord between the DC-DC power converter and the output terminal is at a minimum length.

9. A power adapter for converting AC power to DC power, the power adapter comprising:

an AC input terminal;

an AC-DC power converter in electrical communication with the AC input terminal;

a DC-DC power converter separated from the AC-DC power converter;

an output terminal proximate the DC-DC power converter;

a first cord electrically connecting the AC-DC power converter to the DC-DC power converter; and

a second cord electrically connecting the DC-DC power converter to the output terminal;

wherein the second cord is of a minimum length.

10. The power adapter of claim 9, wherein the minimum length of the second cord is of no length and wherein the output terminal and DC-DC power converter are a single component.

11. The power adapter of claim 9, further comprising a third cord electrically connecting the AC input terminal to the AC-DC power converter.

12. The power adapter of claim 9, wherein the AC input terminal and the AC-DC power converter are a single component.

13. The power adapter of claim 9, wherein the AC-DC convert produces a high voltage and low current as an output.

14. The power adapter of claim 13, wherein the high voltage is approximately 400 volts.

15. The power adapter of claim 11 wherein the third cord is thinner and more flexible when compared to the second cord which is thicker and shorter.

16. The power adapter of claim 9, wherein the AC-DC power converter comprises a rectification circuit and an isolated DC-DC conversion circuit, and wherein the rectification circuit is at a fore end of the AC-DC power converter and is followed by the isolated DC-DC conversion circuit, and wherein the rectification circuit converts an AC voltage into a high DC voltage which will be converted by the isolated DC-DC conversion circuit into a desired DC voltage at the output terminal.

17. The power adapter of claim 9, wherein the AC-DC power converter comprises a rectification circuit and a PFC power factor correction circuit, and wherein the rectification circuit is at a fore end of the AC-DC power converter and is followed by the PFC power factor correction circuit, and wherein the rectification circuit converts an AC voltage into a high DC voltage, which is converted into the high DC voltage at the output terminal by the PFC power factor correction circuit.

18. The power adapter of claim 9, wherein the DC-DC power converter comprises a DC-DC conversion circuit, and wherein the DC-DC conversion circuit is either an isolated DC-DC conversion circuit or a non-isolated DC-DC conversion circuit.