Adaptor, power supply system and power supply method thereof

• US 10,644,602 B2
• Filed: 03/14/2019
• Issued: 05/05/2020
• 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
• Primary Examiner(s): Finch, III, Fred E
• Assistant Examiner(s): Tiku, Sisay G
• Application Number:
  US16/353,651
• Publication Number:
  US 20190341856A1
• Time in Patent Office: 418 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 DC voltage to a first DC voltage in a first specific level;

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

an output circuit configured to apply the first DC voltage and the second DC voltage to an electronic apparatus including a power factor correction (PFC) circuit,

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

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

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

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

converting the DC voltage to a second DC voltage in a second specific level; and

applying the first DC voltage and the second DC voltage to an electronic apparatus including a power factor correction (PFC) circuit,

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

7. The power supply method of the adaptor of claim 6, 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 low voltage to one or more components of the electronic apparatus.

8. The power supply method of the adaptor of claim 7, 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.

9. The power supply method of the adaptor of claim 6, wherein the rectifying comprises, based on the AC power being input from an outside, rectifying the AC power to the DC voltage using a rectification circuit.

10. The power supply method of the adaptor of claim 6, wherein the converting comprises converting the DC voltage to the first DC voltage in the first 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.

11. 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 DC voltage to a first DC voltage in a first specific level;

convert the DC voltage to a second DC voltage in a second specific level; and

an electronic apparatus configured to;

receive, from the adaptor, the first DC voltage and the second DC voltage, and

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

12. The power supply system of claim 11, wherein the

electronic apparatus is configured to:

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

13. The power supply system of claim 12, 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.

14. The power supply system of claim 11, wherein the adaptor comprises a rectification circuit that rectifies the AC power to the DC voltage.

15. The power supply system of claim 11, wherein the adaptor is configured to convert the AC power to the first DC voltage in the first 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.