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Power supply device for supplying standby voltage by using main voltage
US9431899B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9431899-B2 |
| Application number | US-201414301803-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 11, 2014 |
| Priority date | Jun 17, 2013 |
| Publication date | Aug 30, 2016 |
| Grant date | Aug 30, 2016 |
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- Title
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Abstract
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A power supply device may include: a standby power unit converting a direct current (DC) voltage to an operating voltage and a first standby voltage and providing the first standby voltage to a standby output terminal; a DC/DC converting unit receiving the operating voltage from the standby power unit, converting the DC voltage to a main voltage, and providing the main voltage to a main output terminal; and a main/standby power unit converting the main voltage from the DC/DC converting unit to a second standby voltage and providing the second standby voltage to the standby output terminal. The standby power unit varies a magnitude of the first standby voltage based on whether or not the second standby voltage is supplied to the standby output terminal.
First claim
Opening claim text (preview).
What is claimed is: 1. A power supply device, comprising: a standby power unit converting a DC voltage to an operating voltage and a first standby voltage and providing the first standby voltage to a standby output terminal; a DC/DC converting unit receiving the operating voltage from the standby power unit, converting the DC voltage to a main voltage, and providing the main voltage to a main output terminal; a main/standby power unit converting the main voltage from the DC/DC converting unit to a second standby voltage and providing the second standby voltage to the standby output terminal; and a sensing unit sensing whether or not the second standby voltage is supplied to the standby output terminal, wherein the sensing unit outputs a switching signal varying a magnitude of the first standby voltage to the standby power unit when the second standby voltage is supplied to the standby output terminal. 2. The power supply device of claim 1 , wherein the standby power unit decreases the magnitude of the first standby voltage to be lower than that of the second standby voltage based on the switching signal. 3. The power supply device of claim 2 , wherein the standby power unit includes: a passive element unit connected between an output terminal of the standby power unit and a ground; and a switching unit connected between the passive element unit and the ground. 4. The power supply device of claim 3 , wherein the switching unit is operated based on the switching signal.
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- What does patent US9431899B2 cover?
- A power supply device may include: a standby power unit converting a direct current (DC) voltage to an operating voltage and a first standby voltage and providing the first standby voltage to a standby output terminal; a DC/DC converting unit receiving the operating voltage from the standby power unit, converting the DC voltage to a main voltage, and providing the main voltage to a main output …
- Who is the assignee on this patent?
- Samsung Electro Mech, Solum Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H02M3/04. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Aug 30 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).