POWER ADAPTER, POWER DEVICE AND OUTPUT DEVICE

• US 20170063081A1
• Filed: 01/26/2016
• Published: 03/02/2017
• Est. Priority Date: 08/27/2015
• Status: Active Grant

• Current Assignee: Delta Electronics Company Limited (Delta Electronics Incorporated)
• Original Assignee: Delta Electronics Company Limited (Delta Electronics Incorporated)
• Inventors: XU, Dao-Fei
• Granted Patent: US 10,320,188 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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 3/158 including plural semiconductor devices as final control devices for a single load
• CPC Class Codes: H02M 7/04 by static converters

Abstract

A power adapter is disclosed herein. The power adapter includes an AC-DC converter, at least one output port, at least one DC transmission cable and at least one connector. The AC-DC converter is configured to convert an input AC voltage to an intermediate DC voltage. The output port is configured to output the intermediate DC voltage. A second terminal of the DC transmission cable is connected to the output port and configured to receive and transmit the intermediate DC voltage. The connector is connected to a first terminal of the DC transmission cable and configured to output an output voltage. The connector includes a first housing, a DC-DC converter and an output terminal. The DC-DC converter is enclosed in the first housing and configured to convert the intermediate DC voltage to the output voltage. The output terminal is enclosed in the first housing and configured to transmit the output voltage.

Claims

1. A power adapter, comprising:

an ac-dc converter configured to convert an input ac voltage to an intermediate dc voltage;

at least one output port configured to output the intermediate dc voltage;

at least one dc transmission cable, wherein a second terminal of the dc transmission cable is connected to the output port and configured to receive and transmit the intermediate dc voltage; and

at least one connector, connected to a first terminal of the dc transmission cable and configured to output an output voltage, wherein each of the connector comprises;

a first housing;

a dc-dc converter enclosed in the first housing and configured to convert the intermediate dc voltage to the output voltage; and

an output terminal enclosed in the first housing and configured to transmit the output voltage.

2. The power adapter of claim 1, wherein the second terminal of the dc transmission cable is detachably connected to the output port or is fixedly connected to the output port.

3. The power adapter of claim 1, wherein the dc transmission cable only comprises power transmission line configured to transmit the intermediate dc voltage.

4. The power adapter of claim 1, wherein the dc-dc converter comprises a non-isolated buck power converting circuit, configured to convert the intermediate dc voltage to the output voltage.

5. The power adapter of claim 4, wherein the non-isolated buck power converting circuit comprises a synchronous rectifier unit.

6. The power adapter of claim 5, wherein the synchronous rectifier unit comprises a GaN HEMT.

7. The power adapter of claim 4, wherein the non-isolated buck power converting circuit comprises at least one of a GaN HEMT and a Si-MOSFET.

8. The power adapter of claim 1, wherein the output terminal is further connected to an external device, and the output terminal is configured to transmit a communication signal between the DC-DC converter and the external device while transmitting the output voltage to the external device.

9. The power adapter of claim 8, wherein the dc-dc converter is configured to output the output voltage according to the communication signal from the external device.

10. The power adapter of claim 1, wherein further comprises a second housing, the second housing encloses the ac-dc converter and the at least one output port.

11. The power adapter of claim 1, wherein further comprises at least one connecting line, first terminal of the each connecting line is connected to the ac-dc converter, and second terminal of the each connecting line is connected to one of the output ports;

and a second housing encloses the ac-dc converter and the first terminal of the each connecting line.

12. The power adapter of claim 1, wherein the intermediate dc voltage is between 5 volts to 60 volts.

13. The power adapter of claim 12, wherein the intermediate dc voltage is not tight regulated.

14. A power device in a power adapter, comprising:

an input terminal configured to receive an input ac voltage;

an ac-dc converter configured to convert the input ac voltage to an intermediate dc voltage, wherein the intermediate dc voltage is not tight regulated; and

at least one output port configured to output the intermediate dc voltage, wherein the intermediate dc voltage is not less than 5 volts.

15. The power device of claim 14, wherein the at least one output port is configured to output the intermediate dc voltage to at least one output device such that the output device convert the intermediate dc voltage to an output voltage to supply power to an external device connected to the output device.

16. The power device of claim 14, wherein the intermediate dc voltage is between 5 volts to 60 volts.

17. The power device of claim 14, further comprising a second housing, and the second housing encloses the ac-dc converter and the at least one output port.

18. The power adapter of claim 14, wherein further comprises at least one connecting line, first terminal of the each connecting line is connected to the ac-dc converter, and second terminal of the each connecting line is connected to one of the output ports;

and a second housing encloses the ac-dc converter and the first terminal of the each connecting line.

19. An output device accompanied with the power device of claim 14, comprising:

a dc transmission cable configured to receive and transmit the intermediate dc voltage; and

a connector connected to a first terminal of the dc transmission cable and configured to receive the intermediate dc voltage and output an output voltage, wherein the connector comprises;

a first housing;

a dc-dc converter enclosed in the first housing and configured to convert the intermediate dc voltage to the output voltage; and

an output terminal enclosed in the first housing and configured to transmit the output voltage.

20. The output device of claim 19, wherein the output terminal is further connected to an external device, and the output terminal is configured to transmit a communication signal between the DC-DC converter and the external device while transmitting the output voltage to the external device.

21. The output device of claim 19, wherein the dc transmission cable only comprises power transmission line configured to transmit the intermediate dc voltage.

22. The output device of claim 19, wherein the dc-dc converter comprises a non-isolated buck power converting circuit and the non-isolated buck power converting circuit comprises a synchronous rectifier unit.