HIGH EFFICIENCY RECTIFIER, WIRELESS POWER RECEIVER INCLUDING THE RECTIFIER

• US 20120155134A1
• Filed: 12/20/2011
• Published: 06/21/2012
• Est. Priority Date: 12/20/2010
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, Dong Zo, KWON, Sang Wook, PARK, Yun Kwon, PARK, Eun Seok, HONG, Young Tack, RYU, Young Ho, KIM, Nam Yun, CHOI, Jin Sung, KIM, Ki Young
• Granted Patent: US 9,124,115 B2
• Time in Patent Office: Days
• US Class Current: 363/84
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02J 50/50 using additional energy repeaters between transmitting devices and receiving devices
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02M 7/00 Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
• CPC Class Codes: H02M 7/04 by static converters
• CPC Class Codes: H02M 7/06 using discharge tubes without control electrode or semiconductor devices without control electrode

Abstract

A high efficiency rectifier and a wireless power receiver including the rectifier are provided. In one embodiment, a rectifier may be formed of a full bridge diode circuit and may include: a first dual diode, a second dual diode, a third dual diode and a fourth dual diode forming the full bridge diode circuit, the full bridge diode circuit including: a first path configured to output voltage when the phase of an input voltage is positive, via the first dual diode and the fourth dual diode; and a second path configured to output voltage when the phase of the input voltage is negative, via the second dual diode and the third dual diode. In another embodiment, a rectifier may include: at least two full bridge diode circuits connected in parallel.

Claims

1. A rectifier formed of a full bridge diode circuit, the rectifier comprising:

a first dual diode, a second dual diode, a third dual diode and a fourth dual diode forming the full bridge diode circuit, the full bridge diode circuit including;

a first path configured to output voltage when the phase of an input voltage is positive, via the first dual diode and the fourth dual diode; and

a second path configured to output voltage when the phase of the input voltage is negative, via the second dual diode and the third dual diode.

2. The rectifier of claim 1, wherein one or more of the first dual diode, the second dual diode, the third dual diode, and the fourth dual diode comprise at least two diodes connected in parallel.

3. The rectifier of claim 2, wherein one of more of the at least two diodes is a Schottky diode.

4. The rectifier of claim 2, wherein the at least two diodes comprise three or more diodes.

5. The rectifier of claim 1, wherein the cathodes of the first dual diode and the second dual diode are connected, the anodes of third dual diode and the fourth dual diode are connected to a ground, the anode of the first dual diode and the cathode of the third dual diode are connected, and the anode of the second dual diode and the cathode of the fourth dual diode are connected.

6. The rectifier of claim 5, further comprising:

a pair of input paths configured to receive an AC signal,

wherein one of the pair of input paths connects to the anode of the first dual diode and the cathode of the second third dual diode, and the other of the pair of input paths connects to the anode of the second dual diode and the cathode of the fourth dual diode.

7. The rectifier of claim 1, further comprising a capacitor configured to accumulate the voltage output from the full bridge diode circuit.

8. The rectifier of claim 7, further comprising a pair of output paths configured to output a voltage across the capacitor.

9. A wireless power receiver comprising:

a target resonator configured to receive electromagnetic energy from a source resonator; and

the rectifier of claim 1 configured to rectify the signal received from the target resonator, to output a signal.

10. The wireless power receiver of claim 9, further comprising:

a DC/DC voltage converter configured to adjust a signal level of the output signal.

11. A rectifier comprising:

at least two discrete full bridge diode integrated circuits (DFBD ICs), connected in parallel, wherein the at least two DFBD ICs each comprise an integrated IC including a full bridge diode circuit.

12. The rectifier of claim 11, further comprising a capacitor configured to accumulate voltage output from the at least two DFBD ICs.

13. The rectifier of claim 11, wherein the at least two DFBD ICs are configured to output a direct current (DC) voltage for an alternating current (AC) signal inputted to the at least two DFBD ICs.

14. The rectifier of claim 13, wherein the DC voltage substantially corresponds to a maximize amplitude of the AC signal.

15. The rectifier of claim 11, wherein the at least two DFBD ICs each comprise four diodes arranged in a full bridge diode circuit configuration.

16. A wireless power receiver comprising:

a target resonator configured to receive electromagnetic energy from a source resonator;

the rectifier of claim 11 configured to rectify an AC signal received from the target resonator, to output a signal.

17. The wireless power receiver of claim 16, further comprising:

a DC/DC voltage converter to configured to adjust a signal level of the output signal.

18. A rectifier comprising:

a first dual diode, a second dual diode, a third dual diode and a fourth dual diode arranged in a full bridge diode circuit.

19. The rectifier of claim 18, wherein the full bridge diode circuit is an integrated circuit.

20. A rectifier comprising:

at least two full bridge diode circuits connected in parallel.