ATX power supply control circuit and ATX power supply device

文档序号：229801 发布日期：2021-11-09 浏览：8次中文

阅读说明：本技术 Atx电源控制电路及atx电源装置 (ATX power supply control circuit and ATX power supply device ) 是由蔡惠卿曹令正于 2021-08-26 设计创作，主要内容包括：本发明涉及一种ATX电源控制电路及ATX电源装置,控制模块分别连接稳压取样选择模块和输出电压切换模块,控制输出电压切换模块的输出电压供电来源,并用于控制稳压取样选择模块的电压采集目标。在无需电压转换电路的输出电压时,将待机电源电路作为供电来源为主机板接口提供输出电压,并通过控制稳压取样选择模块的电压采集目标来停止电源转换电路的工作。基于此,避免电源转换电路产生的不必要的损耗,提高整体电路的效率。(The invention relates to an ATX power supply control circuit and an ATX power supply device. When the output voltage of the voltage conversion circuit is not needed, the standby power supply circuit is used as a power supply source to provide the output voltage for the mainboard interface, and the voltage collection target of the voltage stabilization sampling selection module is controlled to stop the work of the power conversion circuit. Therefore, unnecessary loss generated by the power conversion circuit is avoided, and the efficiency of the whole circuit is improved.)

1. An ATX power control circuit, comprising:

a standby power supply circuit and a voltage conversion circuit;

the voltage-stabilizing sampling selection module is used for respectively collecting each output voltage of the standby power circuit and providing a voltage-stabilizing sampling signal for the standby power circuit;

the output voltage switching module is used for respectively accessing the output voltage of the voltage conversion circuit and the output voltage of the standby power circuit and providing the output voltage for the mainboard interface by taking the output voltage of the voltage conversion circuit or the standby power circuit as a power supply source;

the control module is respectively connected with the voltage stabilizing sampling selection module and the output voltage switching module, and is used for controlling the output voltage power supply source of the output voltage switching module and controlling the voltage acquisition target of the voltage stabilizing sampling selection module;

wherein the control module comprises:

the first detection unit is connected with the voltage-stabilizing sampling selection module and is used for controlling a voltage acquisition target of the voltage-stabilizing sampling selection module;

the second detection unit is connected with the output voltage switching module and is used for controlling an output voltage power supply source of the output voltage switching module;

when the first detection unit and the second detection unit are connected or disconnected, the voltage acquisition targets of the corresponding voltage stabilization sampling selection modules are different, and the output voltage power supply sources of the corresponding output voltage switching modules are different.

2. The ATX power control circuit of claim 1, wherein the first detection unit comprises:

the first end of the first resistor is used for connecting high level voltage;

the first end of the second resistor is connected with the second end of the first resistor, and the second end of the second resistor is used for connecting the second detection unit;

the first end of the third resistor is used for controlling a voltage acquisition target of the voltage stabilization sampling selection module, and the second end of the third resistor is used for grounding;

and the base electrode of the PNP triode is connected with the second end of the first resistor, the collector electrode of the PNP triode is connected with the first end of the third resistor, and the emitter electrode of the PNP triode is used for connecting high level voltage.

3. The ATX power control circuit of claim 1 or 2, wherein the second detection unit comprises:

a first end of the fourth resistor is used for connecting the first detection unit;

a first end of the fifth resistor is connected with a second end of the fourth resistor, and the second end of the fifth resistor is used for grounding;

the first end of the sixth resistor is used for accessing a high level voltage, and the second end of the sixth resistor is used for controlling an output voltage power supply source of the output voltage switching module;

and the base electrode of the NPN triode is connected with the second end of the fourth resistor, the collector electrode of the NPN triode is connected with the second end of the sixth resistor, and the emitter electrode of the NPN triode is used for grounding.

4. The ATX power control circuit of claim 1 or 2, wherein the control module further comprises:

and the switch unit is used for controlling the connection or disconnection of the first detection unit and the second detection unit.

5. The ATX power supply control circuit of claim 1, wherein the regulated sample selection module is configured to separately collect 12V output voltage and 5V output voltage of the standby power supply circuit.

6. The ATX power control circuit of claim 1, wherein the output voltage switching module is configured to switch in a 5V output voltage of a voltage conversion circuit in the ATX power adapter board and a 5V output voltage of a standby power circuit, respectively.

7. The ATX power supply control circuit of claim 1, wherein the output voltage switching module comprises:

the first switch end of the controlled switch is used for accessing the output voltage of a voltage conversion circuit in the ATX power adapter plate, the second switch end of the controlled switch is used for accessing the output voltage of a standby power circuit, and the third switch end of the controlled switch is used for providing the output voltage for a mainboard interface;

and the controlled end of the controlled switch is connected with the control module and used for adjusting the conduction states of the first switch end, the second switch end and the third switch end of the controlled switch according to the control signal of the control module.

8. The ATX power supply control circuit of claim 1, wherein the controlled switch comprises a semiconductor switch.

9. An ATX power supply device, comprising:

an ATX power supply including a standby power supply circuit;

the ATX power supply adapter plate comprises a voltage conversion circuit;

an ATX power control circuit comprising:

the output voltage switching module is used for respectively accessing the output voltage of the voltage conversion circuit and the output voltage of the standby power circuit and providing the output voltage for a mainboard interface by taking the output voltage of the voltage conversion circuit in the ATX power adapter plate or the standby power circuit as a power supply source;

wherein the control module comprises:

the second detection unit is connected with the output voltage switching module and is used for controlling an output voltage power supply source of the output voltage switching module;

10. The ATX power supply apparatus according to claim 9, wherein the ATX power supply further comprises:

the EMI circuit is used for accessing alternating current power supply;

the rectification and PFC circuit is respectively connected with the EMI circuit and the standby power circuit;

the main power conversion circuit is connected with the rectification and PFC circuit;

the main control circuit is connected with the main power conversion circuit;

the ATX power supply adapter plate further comprises:

the voltage adaptation circuit is connected with the main power conversion circuit and is used for connecting a mainboard interface;

and the control circuit is connected with the main control circuit and is used for connecting a mainboard interface.

Technical Field

The invention relates to the technical field of computer power supply equipment, in particular to an ATX power supply control circuit and an ATX power supply device.

Background

The atx (advanced Technology extended) structure is a structural standard, which is a manufacturing standard of a computer motherboard structure. The ATX power supply is a power supply under an ATX structure and is used for converting a 220V alternating current power supply into 5V, 12V or 24V direct current power used in a computer. Meanwhile, in order to match the use of the ATX power supply, in practical application, the output voltage of the ATX power supply is converted by the ATX power adapter board and is output to the motherboard interface, for example, 12Vsb of the standby power supply circuit is converted into 5 Vsb.

However, in some application scenarios, the power requirement of the motherboard interface can be satisfied by the 5Vsb of the standby power circuit, and the conversion of 12Vsb into 5Vsb by the power conversion circuit will cause unnecessary loss, which affects the efficiency of the overall power circuit.

Disclosure of Invention

Accordingly, it is necessary to provide an ATX power supply control circuit and an ATX power supply apparatus in order to overcome the defects that the efficiency of the entire power supply circuit is affected by unnecessary loss generated by the power conversion circuit.

An ATX power supply control circuit comprising:

a standby power supply circuit and a voltage conversion circuit;

and the control module is respectively connected with the voltage-stabilizing sampling selection module and the output voltage switching module, and is used for controlling the output voltage power supply source of the output voltage switching module and controlling the voltage acquisition target of the voltage-stabilizing sampling selection module.

In the ATX power control circuit, the control module is respectively connected to the voltage stabilizing sampling selection module and the output voltage switching module, controls the output voltage power supply source of the output voltage switching module, and is used for controlling the voltage acquisition target of the voltage stabilizing sampling selection module. When the output voltage of the voltage conversion circuit is not needed, the standby power supply circuit is used as a power supply source to provide the output voltage for the mainboard interface, and the voltage collection target of the voltage stabilization sampling selection module is controlled to stop the work of the power conversion circuit. Therefore, unnecessary loss generated by the power conversion circuit is avoided, and the efficiency of the whole circuit is improved.

In one embodiment, the control module comprises:

the second detection unit is connected with the output voltage switching module and is used for controlling an output voltage power supply source of the output voltage switching module;

In one embodiment, the first detecting unit includes:

the first end of the first resistor is used for connecting high level voltage;

the first end of the second resistor is connected with the second end of the first resistor, and the second end of the second resistor is used for connecting the second detection unit;

In one embodiment, the second detecting unit includes:

the first end of the fourth resistor is used for connecting the first detection unit;

a first end of the fifth resistor is connected with a second end of the fourth resistor, and the second end of the fifth resistor is used for grounding;

In one embodiment, the control module further comprises:

and the switch unit is used for controlling the connection or disconnection of the first detection unit and the second detection unit.

In one embodiment, the regulated sampling selection module is used for respectively acquiring 12V output voltage and 5V output voltage of the standby power supply circuit.

In one embodiment, the output voltage switching module is used for respectively accessing the 5V output voltage of the voltage conversion circuit in the ATX power adapter board and the 5V output voltage of the standby power supply circuit.

In one embodiment, the output voltage switching module comprises:

the first switch end of the controlled switch is used for accessing the output voltage of the voltage conversion circuit in the ATX power adapter plate, the second switch end of the controlled switch is used for accessing the output voltage of the standby power circuit, and the third switch end of the controlled switch end is used for providing the output voltage for the mainboard interface;

In one embodiment, the controlled switch comprises a semiconductor switch.

An ATX power supply apparatus comprising:

an ATX power supply including a standby power supply circuit;

the ATX power supply adapter plate comprises a voltage conversion circuit;

an ATX power control circuit comprising:

the output voltage switching module is used for respectively accessing the output voltage of the voltage conversion circuit and the output voltage of the standby power circuit and providing the output voltage for the mainboard interface by taking the output voltage of the voltage conversion circuit in the ATX power adapter plate or the standby power circuit as a power supply source;

wherein the control module comprises:

the second detection unit is connected with the output voltage switching module and is used for controlling an output voltage power supply source of the output voltage switching module;

the first detection unit and the second detection unit are connected or disconnected, voltage collection targets of the corresponding voltage stabilization sampling selection modules are different, and output voltage power supply sources of the corresponding output voltage switching modules are different.

In the ATX power supply device, the control module is respectively connected to the voltage stabilizing sampling selection module and the output voltage switching module, controls the output voltage power supply source of the output voltage switching module, and is used for controlling the voltage acquisition target of the voltage stabilizing sampling selection module. When the output voltage of the voltage conversion circuit is not needed, the standby power supply circuit is used as a power supply source to provide the output voltage for the mainboard interface, and the voltage collection target of the voltage stabilization sampling selection module is controlled to stop the work of the power conversion circuit. Therefore, unnecessary loss generated by the power conversion circuit is avoided, and the efficiency of the ATX power supply device is improved.

In one embodiment, the ATX power supply further comprises:

the EMI circuit is used for accessing alternating current power supply;

the rectification and PFC circuit is respectively connected with the EMI circuit and the standby power circuit;

the main power conversion circuit is connected with the rectification and PFC circuit;

the main control circuit is connected with the main power conversion circuit;

the ATX power supply adapter plate further comprises:

the voltage adaptation circuit is connected with the main power conversion circuit and is used for connecting a mainboard interface;

and the control circuit is connected with the main control circuit and is used for connecting the mainboard interface.

Drawings

FIG. 1 is a block diagram of an ATX power control circuit according to an embodiment;

FIG. 2 is a block diagram of an ATX power control circuit according to another embodiment;

FIG. 3 is a circuit diagram of a control module according to one embodiment;

fig. 4 is a block diagram of an ATX power supply apparatus according to an embodiment.

Detailed Description

For better understanding of the objects, technical solutions and effects of the present invention, the present invention will be further explained with reference to the accompanying drawings and examples. Meanwhile, the following described examples are only for explaining the present invention, and are not intended to limit the present invention.

The embodiment of the invention provides an ATX power supply control circuit.

Fig. 1 is a block diagram of an ATX power control circuit according to an embodiment, and as shown in fig. 1, the ATX power control circuit according to an embodiment includes a standby power circuit, a voltage conversion circuit, a regulated sampling selection module 100, an output voltage switching module 101, and a control module 102:

a voltage-stabilizing sampling selection module 100, configured to collect output voltages of the standby power circuit, respectively, and provide a voltage-stabilizing sampling signal for the standby power circuit;

the output voltage switching module 101 is used for respectively accessing the output voltage of the voltage conversion circuit and the output voltage of the standby power circuit, and providing the output voltage for the motherboard interface by taking the output voltage of the voltage conversion circuit or the standby power circuit as a power supply source;

the control module 102 is connected to the regulated sampling selection module 100 and the output voltage switching module 101, respectively, and is configured to control an output voltage power supply source of the output voltage switching module 101, and further configured to control a voltage acquisition target of the regulated sampling selection module 100.

As shown in fig. 1, the regulated voltage sample selection module 100 samples the voltage of the standby power circuit. In one embodiment, the standby power circuit outputs two standby voltages, one is a 12V standby voltage, i.e., 12Vsb, and the other is a 5V standby voltage, i.e., 5 Vsb. The 12V standby voltage is converted into 5V voltage through a voltage conversion circuit. The voltage-stabilizing sampling selection module 100 feeds back a sampling signal to the standby power circuit according to voltage sampling performed on the standby power circuit.

The hardware selection of the voltage sampling mode of the voltage-stabilizing sampling selection module 100 may be flexibly selected according to the requirement of the standby power circuit, and is not limited herein. It is noted that the voltage sampling path of the regulated sample selection block 100 is controlled by the control block 102. In one embodiment, the regulated voltage sampling selection module 100 includes a switching circuit, and the switching circuit enables the regulated voltage sampling selection module 100 to select a specified voltage sampling according to the control signal of the control module 102, and to specify one of the standby voltages of the standby power circuit.

The voltage conversion circuit performs voltage conversion on the output voltage of the standby power supply circuit, such as converting the 12V standby voltage into 5V.

Therefore, when a standby voltage of 5V is required, converting 12V of the standby power supply circuit to 5V inevitably affects the efficiency of the entire circuit. Here, based on the switching of the voltage stabilization sampling selection module 100 and the output voltage switching module 101, the voltage of 5V is directly output as the standby voltage, so that the operation of converting 12V to 5V of the voltage conversion circuit is avoided, and the overall efficiency is ensured.

Based on this, the output voltage switching module 101 selects the output voltage of the voltage conversion circuit or the standby power circuit as the power source, and outputs the selected output to the motherboard interface as the voltage output.

In one embodiment, the output voltage switching module 101 includes:

the first switch end of the controlled switch is used for accessing the output voltage of the voltage conversion circuit, the second switch end of the controlled switch is used for accessing the output voltage of the standby power circuit, and the third switch end of the controlled switch is used for providing the output voltage for the mainboard interface;

the controlled end of the controlled switch is connected to the control module 102, and is configured to adjust conduction states of the first switch end, the second switch end, and the third switch end of the controlled switch according to a control signal of the control module 102.

Based on this, it can be seen that the regulated voltage sample selection module 100 and the output voltage switching module 101 are both controlled by the control module 102. In one embodiment, the control module 102 controls the regulated voltage sample selection module 100 and the output voltage switching module 101 by outputting control signals. Fig. 2 is a block diagram of an ATX power control circuit according to another embodiment, and as shown in fig. 2, the control module 102 includes:

the first detecting unit 200 is connected to the regulated sampling selection module 100, and is configured to control a voltage acquisition target of the regulated sampling selection module 100;

the second detecting unit 201 is connected to the output voltage switching module 101, and is configured to control an output voltage power supply source of the output voltage switching module 101;

when the first detecting unit 200 and the second detecting unit 201 are connected or disconnected, the voltage collecting targets of the corresponding voltage stabilizing sampling selection modules 100 are different, and the output voltage power supply sources of the corresponding output voltage switching modules 101 are different.

The first detecting unit 200 controls the voltage acquisition target of the regulated sampling selection module 100, the second detecting unit 201 controls the output voltage power supply source of the output voltage switching module 101, and the control manner of the first detecting unit 200 and the second detecting unit 201 changes depending on whether the first detecting unit 200 and the second detecting unit 201 are connected or disconnected. When the first detecting unit 200 is connected to the second detecting unit 201, the first detecting unit 200 and the second detecting unit 201 are controlled; when the first detection unit 200 and the second detection unit 201 are disconnected, the first detection unit 200 and the second detection unit 201 are controlled in another way. The first detection unit 200 and the second detection unit 201 are different and characterized in that the voltage collection targets of the regulated sampling selection module 100 are different and the output voltage power supply sources of the output voltage switching module 101 are different.

In one embodiment, fig. 3 is a circuit diagram of the control module 102 according to an embodiment, and as shown in fig. 3, the first detecting unit 200 includes:

a first resistor R1, a first end of which is used for connecting a high level voltage;

a second resistor R2, having a first end connected to the second end of the first resistor R1, and a second end connected to the second detecting unit 201;

a third resistor R3, a first end of which is used for controlling the voltage acquisition target of the voltage stabilization sampling selection module 100, and a second end of which is used for grounding;

and the PNP triode Q1 has a base connected with the second end of the first resistor R1, a collector connected with the first end of the third resistor R3, and an emitter connected with a high-level voltage.

The second detecting unit 201 includes:

a fourth resistor R4, a first end of which is connected to the first detecting unit 200;

a fifth resistor R5, having a first end connected to the second end of the fourth resistor R4, and a second end for grounding;

a sixth resistor R6, having a first end for accessing a high level voltage and a second end for controlling an output voltage power supply source of the output voltage switching module 101;

and the base of the NPN triode Q2 is connected with the second end of the fourth resistor R4, the collector of the NPN triode Q2 is connected with the second end of the sixth resistor R6, and the emitter of the NPN triode Q2 is used for being grounded.

As shown in fig. 3, a first terminal of the third resistor R3 is configured to output a first control signal to control a voltage acquisition target of the regulated voltage sampling selection module 100, and a second terminal of the sixth resistor R6 is configured to output a second control signal to control an output voltage power supply source of the output voltage switching module 101.

When the connection between the first detection unit 200 and the second detection unit 201 is in an open state, as shown in fig. 3, the PNP transistor Q1 is turned off, and the first control signal is pulled down to a ground signal by the third resistor R3 and output as a low level signal. The NPN transistor Q2 is turned off, and the second control signal is pulled up to a high level voltage by the sixth resistor R6 and outputted as a high level signal.

When the first detecting unit 200 and the second detecting unit 201 are connected, as shown in fig. 3, the base of the NPN transistor Q2 is pulled high, the NPN transistor Q2 is turned on, and the second control signal is pulled low to the ground signal, and is output as a low level signal. Meanwhile, the base of the PNP transistor Q1 is pulled down to the ground signal, the PNP transistor Q1 is turned on, and the first control signal is pulled up to the high level voltage as the high level signal.

Therefore, when the first detection unit 200 and the second detection unit 201 are connected or disconnected, the first control signal and the second control signal are inverted, so as to change the control mode of the first detection unit 200 and the second detection unit 201.

In one embodiment, as shown in fig. 2, the control module 102 further comprises:

a switch unit 202, wherein the switch unit 202 is used for controlling the connection or disconnection between the first detection unit 200 and the second detection unit 201.

The switch unit 202 includes a relay, an electronic switch or a key switch, etc. to facilitate the relevant user to change the connection state of the first detecting unit 200 and the second detecting unit 201.

In the ATX power control circuit of any of the embodiments, the control module 102 is respectively connected to the voltage-stabilizing sampling selection module 100 and the output voltage switching module 101, and controls the output voltage power supply source of the output voltage switching module 101, and is used for controlling the voltage acquisition target of the voltage-stabilizing sampling selection module 100. When the output voltage of the voltage conversion circuit is not needed, the standby power circuit is used as a power supply source to provide the output voltage for the motherboard interface, and the voltage collection target of the voltage stabilization sampling selection module 100 is controlled to stop the work of the power conversion circuit. Therefore, unnecessary loss generated by the power conversion circuit is avoided, and the efficiency of the whole circuit is improved.

The embodiment of the invention also provides an ATX power supply device.

Fig. 4 is a block diagram of an ATX power supply apparatus according to an embodiment, and as shown in fig. 4, the ATX power supply apparatus according to an embodiment includes:

an ATX power supply including a standby power supply circuit;

the ATX power supply adapter plate comprises a voltage conversion circuit;

an ATX power control circuit comprising:

the output voltage switching module is used for respectively accessing the output voltage of the voltage conversion circuit and the output voltage of the standby power circuit and providing the output voltage for the mainboard interface by taking the output voltage of the voltage conversion circuit in the ATX power adapter plate or the standby power circuit as a power supply source;

Wherein the control module comprises:

the second detection unit is connected with the output voltage switching module and is used for controlling an output voltage power supply source of the output voltage switching module;

In one embodiment, the ATX power supply further comprises:

an EMI (Electromagnetic Interference) circuit for accessing an AC power supply;

a rectification and PFC (Power Factor Correction) circuit respectively connected with the EMI circuit and the standby Power circuit;

the main power conversion circuit is connected with the rectification and PFC circuit;

the main control circuit is connected with the main power conversion circuit;

the ATX power supply adapter plate further comprises:

the voltage adaptation circuit is connected with the main power conversion circuit and is used for connecting a mainboard interface;

and the control circuit is connected with the main control circuit and is used for connecting the mainboard interface.

As shown in FIG. 4, the main control circuit provides PS _ on and PWR _ OK control signals to the motherboard interface via the control circuit.

In one embodiment, as shown in fig. 4, the control module includes a first detecting unit and a second detecting unit. The first detection unit and the voltage-stabilizing sampling selection module are arranged on an ATX power supply, and the second detection unit and the output voltage switching module are arranged on an ATX power supply adapter plate, so that the ATX power supply control circuit is practical and commercialized.

As shown in fig. 4, when the voltage of 5V is needed, the voltage conversion circuit in the ATX power adapter board does not need to convert 12V output by the standby power circuit of the ATX power into 5V, but directly outputs 5V output by the standby power circuit to the motherboard interface, thereby avoiding the efficiency influence caused by the voltage conversion.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

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