USB mini B power supply system for quickly charging USB mini B devices

• US 20070278999A1
• Filed: 09/29/2006
• Published: 12/06/2007
• Est. Priority Date: 05/30/2006
• Status: Abandoned Application

• Current Assignee: Wistron Corporation
• Original Assignee: Wistron Corporation
• Inventors: Hsia, Wen-Nan
• Application Number:
  US11/536,695
• Publication Number:
  US 20070278999A1
• Time in Patent Office: Days
• US Class Current: 320/111
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction

Abstract

Power supply system for charging USB mini-B devices includes a charger and a USB mini-B device. The USB mini-B device includes a first pin receiving the DC current from the charger, a fourth pin receiving the DC current or identification data from the charger, a power management unit receiving DC current, a first switch transmitting the DC current from the first pin to the first input node of the power management when the first switch is on, a second switch transmitting the DC current from the first pin to the first input node of the power management when the second switch is on.

Claims

1. A power charger for quickly charging USB (universal serial bus, USB) mini B devices, comprising:

a power converter converting an input power source into a direct current; and

a USB mini B plug of which a first pin and a fourth pin are coupled to an output node of the power converter receiving the direct current from the output node of the power converter.

2. The charger of claim 1, wherein the power converter is an ac/dc converter, converting an alternating current into a direct current.

3. The charger of claim 1, wherein the power converter is a dc/dc converter, converting a first input direct current into a second output direct current.

4. The charger of claim 1, wherein a fifth pin and a sixth pin of the USB mini B plug are coupled to ground.

5. An USB mini B device for quickly being charged, comprising:

a USB mini B socket comprising;

a first pin receiving a direct current; and

a fourth pin receiving a direct current or a identity;

a power management unit comprising a first input node receiving a direct current;

a first switch coupled between the first pin of the USB mini B socket and the first input node of the power management unit, transmitting the direct current of the first pin of the USB mini B socket to the first input node of the power management unit when the first switch is turned on; and

a second switch coupled to the fourth pin of the USB mini B socket and the first input node of the power management unit, transmitting the direct current of the fourth pin of the USB mini B socket to the first input node of the power management unit when the second switch is turned on.

6. The USB mini B device of claim 5, further comprising:

an inverter comprising;

an input node coupled to the fourth pin of the USB mini B socket; and

an output node coupled to a controlling node of the first switch and the second switch.

7. The USB mini B device of claim 5, further comprising:

a resistor coupled between the fourth pin of the USB mini B socket and ground.

8. The USB mini B device of claim 5, wherein the power management unit further comprises a second input node for receiving a direct current.

9. The USB mini B device of claim 8, wherein the power management unit further comprises:

a current-limiting unit coupled to the second input node of the USB mini B device, limiting the received direct current according to a USB current standard.

10. The USB mini B device of claim 9, further comprising:

a third switch, coupled between the first pin of the USB mini B socket and the second input node of the power management unit, transmitting the direct current of the first pin of the USB mini B socket to the second input node of the power management unit when the first switch is turned on.

11. The USB mini B device of claim 10, wherein a controlling node of the third switch is coupled to the fourth pin of the USB mini B socket.

12. A power supply system for quickly charging USB mini B devices, comprising:

a charger, comprising;

a power converter converting an input power source into a direct current; and

a USB mini B plug comprising a first pin and a fourth pin coupled to an output node of the power converter, receiving a direct current from the output node of the power converter;

a USB mini B device comprising;

a USB mini B socket comprising;

a first pin coupled to the first pin of the USB mini B plug, receiving the direct current from the first pin of the USB mini B plug; and

a fourth pin coupled to the fourth pin of the USB mini B plug, receiving the direct current or a identity from the fourth pin of the USB mini B plug;

a power management unit comprising a first input node, receiving a direct current;

a first switch coupled between the first pin of the USB mini B socket and the first input node of the power management unit, transmitting the direct current of the first pin of the USB mini B socket to the first input node of the power management unit when the second switch is turned on; and

a second switch coupled between the fourth pin of the USB mini B socket and the first input node of the power management unit, transmitting the direct current of the fourth pin of the USB mini B socket to the first input node of the power management unit when the first switch is turned on.

13. The power supply system of claim 12, wherein a fifth pin and a sixth pin of the USB mini B plug are coupled to ground.

14. The power supply system of claim 12, further comprising:

an inverter comprising;

an input node coupled to the fourth pin of the USB mini B socket; and

an output node coupled to a controlling node of the first switch and the second switch.

15. The power supply system of claim 12, further comprising a resistor coupled between the fourth pin of the USB mini B socket and ground.

16. The power supply system of claim 12, wherein the power management unit further comprises a second input node receiving a direct current.

17. The power supply system of claim 16, wherein the power management unit further comprises a current-limiting unit coupled to the second input node of the power management unit limiting the received direct current according to a USB current standard.

18. The power supply system of claim 17, further comprising:

a third switch coupled between the first pin of the USB mini B socket and the second input node of the power management unit, transmitting the direct current of the first pin of the USB mini B socket to the second input node of the power management unit when the third switch is turned on.

19. The power supply system of claim 18, wherein a controlling node of the third switch is coupled to the fourth pin of the USB mini B socket.

20. The power supply system of claim 12, wherein the power converter is an ac/dc converter, converting an alternating current into a direct current.

21. The power supply system of claim 12, wherein the power converter is a dc/dc converter, converting a first direct current into a second direct current.