Direct voltage supplying device

A technology of DC voltage and supply device, used in emergency protection circuit device, output power conversion device, DC power input conversion to DC power output, etc.
CN102480225AActive Publication Date: 2012-05-30INVENTEC CORP
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
INVENTEC CORP
Publication Date
2012-05-30

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Abstract

The invention provides a direct voltage supplying device which comprises a voltage detecting unit, an enable signal processing unit, a latch unit, a control unit and a voltage conversion unit, wherein the voltage detecting unit is used for receiving and detecting a direct-current input voltage so as to generate an input voltage status signal, the enable signal processing unit is used for receiving the input voltage status signal and an enable signal and determining the state of the enable signal according to the input voltage status signal; when the enable signal is invalid, a latch of the latch unit can enable the enable signal to be in an invalid state, and the control unit is used for receiving the enable signal so as to generate a control signal; when the control signal is valid, the voltage conversion unit is used for receiving and converting the direct-current input voltage into a direct-current output voltage and outputting the direct-current output voltage; and when the control signal is invalid, the voltage conversion unit stops receiving the direct-current input voltage. Thus, when the direct-current input voltage is unstable, a power supply provided for a main circuit of a server is stopped, thereby avoiding unstable power supply from causing the main circuit to generate misoperation, and effectively achieving the protective action.
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Description

technical field

[0001] The invention relates to a voltage protection device, and in particular to a voltage supply device capable of cutting off the DC power supply when the DC voltage is unstable. Background technique

[0002] Generally speaking, a server system provides an operating voltage through a power supply. However, the current power supply first receives the alternating current (AC) voltage of 100V-230V, and then converts the above AC voltage into a direct current (DC) voltage (such as 12V) through the transformer inside the power supply, so as to As the working voltage of the server system. At this time, all the protection of 12V is done in the power supply.

[0003] However, the future trend is that the server system no longer provides the operating voltage via the AC voltage, but directly provides the operating voltage directly from the DC voltage (eg 12V) provided by the end customer. At this time, the server system cannot use a power supply, but is replaced...

Claims

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