ADAPTOR, POWER SUPPLY SYSTEM AND POWER SUPPLY METHOD THEREOF

• US 20190341856A1
• Filed: 03/14/2019
• Published: 11/07/2019
• Est. Priority Date: 05/04/2018
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: JANG, Duhee, KANG, Jeongil, LEE, Sanghoon
• Granted Patent: US 10,644,602 B2
• Time in Patent Office: Days
• CPC Class Codes: H02M 1/0058 by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero using an auxiliary actively switched resonant commutation circuit connected to an intermediate DC voltage or between two push-pull branches of an inverter bridge H02M7/4811; in resonant inverters H02M7/4815; in inverters operating from a resonant DC source H02M7/4826
• 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 1/4208 Arrangements for improving power factor of AC input
• CPC Class Codes: H02M 1/4225 using a non-isolated boost converter
• CPC Class Codes: H02M 3/335 using semiconductor devices only
• 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
• CPC Class Codes: Y02B 70/10 Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Abstract

There is provided an adaptor, which includes an input circuit that rectifies an alternating current (AC) power input from outside the adaptor to a direct current (DC) voltage; a first converter that converts the rectified DC voltage to a first DC voltage in a specific level and an output circuit that applies the first DC voltage in the specific level to an electronic apparatus including a power factor correction (PFC) circuit.

Claims

1. An adaptor comprising:

an input circuit configured to rectify an alternating current (AC) power input from outside the adaptor to a direct current (DC) voltage;

a first converter configured to convert the rectified DC voltage to a first DC voltage in a specific level; and

an output circuit configured to apply the first DC voltage in the specific level to an electronic apparatus including a power factor correction (PFC) circuit.

2. The adaptor of claim 1, wherein the electronic apparatus is further configured to:

boost the first DC voltage applied from the adaptor through the PFC circuit,

convert the boosted first DC voltage to a low voltage, and

apply the converted low voltage to one or more components of the electronic apparatus.

3. The adaptor of claim 2, wherein the boosted first DC voltage through the PFC circuit is converted to a first voltage and applied to a display panel of the electronic apparatus, and the boosted first DC voltage through the PFC circuit is converted to a second voltage and applied to a main board of the electronic apparatus.

4. The adaptor of claim 1, wherein the input circuit comprises a rectification circuit that rectifies the input AC power to the DC voltage.

5. The adaptor of claim 1, wherein the first converter comprises at least one of a half bridge converter, a full bridge converter, a flyback converter and a logical link control (LLC) resonant converter.

6. The adaptor of claim 1, further comprising:

a second converter configured to convert the rectified DC voltage to a second DC voltage in a specific level,

wherein the specific level of the second DC voltage that is output from the second converter is smaller than the specific level of the first DC voltage that is output from the first converter.

7. A power supply method of an adaptor, the method comprising:

rectifying an alternating current (AC) input from outside the adaptor to a direct current (DC) voltage;

converting the rectified DC voltage to a first DC voltage in a specific first level; and

applying the first DC voltage in the specific first level to an electronic apparatus including a power factor correction (PFC) circuit.

8. The method of claim 7, further comprising:

boosting the first DC voltage applied from the adaptor through the PFC circuit,

converting the boosted first DC voltage to a low voltage, and

applying the converted low voltage to one or more components of the electronic apparatus.

9. The method of claim 8, wherein the boosted first DC voltage through the PFC circuit is converted to a first voltage and applied to a display panel of the electronic apparatus, and the boosted first DC voltage through the PFC circuit is converted to a second voltage and applied to a main board of the electronic apparatus.

10. The method of claim 7, wherein the rectifying comprises, based on the AC being input from an outside, rectifying the input AC power to the DC voltage using a rectification circuit.

11. The method of claim 7, wherein the converting comprises converting the rectified DC voltage to the first DC voltage in the specific first level using at least one of a half bridge converter, a full bridge converter, a flyback converter and a logical link control (LLC) resonant converter.

12. The method of claim 7, further comprising:

converting the rectified DC voltage to a second DC voltage in a specific second level,

wherein the specific second level of the second DC voltage is smaller than the specific first level of the first DC voltage.

13. A power supply system comprising:

an adaptor configured to;

rectify an alternating current (AC) power input from outside the adaptor to a direct current (DC) voltage; and

convert the rectified DC voltage to a first DC voltage in a specific level; and

an electronic apparatus configured to;

receive, from the adaptor, the first DC voltage in the specific level, and

boost the first DC voltage through a power factor correction (PFC) circuit.

14. The power supply system of claim 13, wherein the electronic apparatus is configured to:

convert the boosted first DC voltage to a low voltage and apply the converted low voltage to one or more components of the electronic apparatus.

15. The power supply system of claim 14, wherein the electronic apparatus is configured to:

convert the boosted first DC voltage to a first voltage and apply the first voltage to a display panel of the electronic apparatus, and

convert the boosted first DC voltage to a second voltage and apply the second voltage to a main board of the electronic apparatus.

16. The power supply system of claim 13, wherein the adaptor comprises a rectification circuit that rectifies the input AC power to the DC voltage.

17. The power supply system of claim 13, wherein the adaptor is configured to convert the input AC power to the first DC voltage in the specific level using at least one of a half bridge converter, a full bridge converter, a flyback converter and a logical link control (LLC) resonant converter.

18. The power supply system of claim 13, wherein the adaptor is configured to:

convert the rectified DC voltage to the first DC voltage in the specific level and apply the first DC voltage to the electronic apparatus, and

convert the rectified DC voltage to a second DC voltage in a specific level and apply the second voltage to the electronic apparatus.