CN211349293U

CN211349293U - Dual-power control circuit of low-power consumption mainboard

Info

Publication number: CN211349293U
Application number: CN201922469927.0U
Authority: CN
Inventors: 张静; 王伟
Original assignee: Shenzhen Maxtopic Technology Co ltd
Current assignee: Shenzhen Maxtopic Technology Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-08-25
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a dual supply control circuit of low-power consumption mainboard. This dual supply control circuit of low-power consumption mainboard includes: the monitoring and comparing module comprises a first power supply module, a second power supply module, a monitoring and comparing module and a quick switching module; the first power supply module and the second power supply module provide power supply output for the mainboard; the first power supply module and the second power supply module are electrically connected with the fast switching module; the first power supply module and the second power supply module are respectively and electrically connected with the comparison module; under the non-abnormal condition, the first power supply module and the second power supply module simultaneously supply power to the mainboard; the monitoring and comparing module monitors the voltage of the first power supply module and the voltage of the second power supply module in real time, and when the voltage of the first power supply module or the voltage of the second power supply module is abnormal, the fast switching module cuts off the input of the abnormal power supply module and controls the abnormal power supply module to supply power independently. The utility model discloses there is low cost and guarantees the advantage that the CPU mainboard can reliable and stable operation.

Description

Dual-power control circuit of low-power consumption mainboard

Technical Field

The utility model relates to a power control technical field especially relates to a dual supply control circuit of low-power consumption mainboard.

Background

In the modern times of scientific and technical high-speed development, the requirements and standards of various industries and departments on power supply of power supplies are relatively high. The continuity and reliability of power supply can be ensured by adopting a dual-power supply mode. The redundant power supply is used for a server and consists of two identical power supplies, the chip control power supplies are used for load balancing, and when one power supply fails, the other power supply can take over the work of the other power supply. However, the redundant power supply technology is relatively expensive, and the circuit is also complex, which is relatively wasteful in some power supply applications of low power consumption motherboard. Therefore, the invention is a problem to be solved by those skilled in the art that is low in cost and ensures that a CPU motherboard can stably and reliably operate.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem be, provide a have low cost and guarantee that the dual power control circuit of the low-power consumption mainboard of CPU mainboard can reliable and stable operation.

The utility model discloses a dual supply control circuit of low-power consumption mainboard, include: the monitoring and comparing module comprises a first power supply module, a second power supply module, a monitoring and comparing module and a quick switching module; the first power supply module and the second power supply module provide power supply output for the mainboard; the first power supply module and the second power supply module are electrically connected with the fast switching module; the first power supply module and the second power supply module are respectively and electrically connected with the monitoring comparison module; under the non-abnormal condition, the first power supply module and the second power supply module simultaneously supply power to the mainboard; the monitoring and comparing module monitors the voltage of the first power supply module and the voltage of the second power supply module in real time, and when the voltage of the first power supply module or the voltage of the second power supply module is abnormal, the fast switching module cuts off the input of the abnormal power supply module and controls the non-abnormal power supply module to supply power independently.

Preferably, the fast switching module comprises a fast switch; the first end of the rapid switcher is electrically connected with the first power supply module, the second end of the rapid switcher is electrically connected with the second power supply module, and the third end of the rapid switcher is grounded.

Preferably, the fast switching module further includes a first capacitor, a second capacitor, and a third capacitor; the first end of the first capacitor is electrically connected with the third end of the fast switcher, and the second end of the first capacitor is grounded; the first capacitor, the second capacitor and the third capacitor are connected in parallel.

Preferably, the monitoring and comparing module comprises a first monitoring and comparing unit and a second monitoring and comparing unit; the first monitoring comparison unit is electrically connected with the first power supply module, the first monitoring comparison unit is electrically connected with the second monitoring comparison unit, and the second monitoring comparison unit is electrically connected with the second power supply module.

Preferably, the first monitoring and comparing unit comprises a first field effect transistor; the grid electrode of the first field effect transistor is electrically connected with the first power supply module, the drain electrode of the first field effect transistor is electrically connected with the second monitoring comparison unit, and the source electrode of the first field effect transistor is grounded.

Preferably, the first monitoring comparing unit and the second monitoring comparing unit have the same structure.

Preferably, the first power module includes a first switch, a fourth capacitor, a first resistor, a first magnetic bead, a second magnetic bead, and a first fuse patch; a first end of the first switch is electrically connected with a first end of the fast switch, a second end of the first switch is electrically connected with a first end of the fourth capacitor and a first end of the first resistor respectively, and a third end of the first switch is electrically connected with a second end of the fourth capacitor and a second end of the first resistor respectively; the first end of the first magnetic bead, the first end of the second magnetic bead and the first end of the first fuse patch are respectively electrically connected with the second end of the first resistor, the second end of the first fuse patch is electrically connected with the first end and the second end of the first power supply port of the mainboard, and the second end of the first magnetic bead and the second end of the second magnetic bead are respectively electrically connected with the third end and the fourth end of the first power supply port of the mainboard.

The utility model discloses a dual power control circuit of low-power consumption mainboard has following beneficial effect, the utility model discloses a dual power control circuit of low-power consumption mainboard includes: the monitoring and comparing module comprises a first power supply module, a second power supply module, a monitoring and comparing module and a quick switching module; the first power supply module and the second power supply module provide power supply output for the mainboard; the first power supply module and the second power supply module are electrically connected with the fast switching module; the first power supply module and the second power supply module are respectively and electrically connected with the monitoring comparison module; under the non-abnormal condition, the first power supply module and the second power supply module simultaneously supply power to the mainboard; the monitoring and comparing module monitors the voltage of the first power supply module and the voltage of the second power supply module in real time, and when the voltage of the first power supply module or the voltage of the second power supply module is abnormal, the fast switching module cuts off the input of the abnormal power supply module and controls the non-abnormal power supply module to supply power independently. The utility model discloses a low-cost non-redundant dual power supply design uses two mains operated in the complete machine, and when one of them power goes wrong, another power can be switched rapidly and make the system normally work for independent power supply, provides stable, low-cost scheme for the customer. Therefore, the utility model discloses there is low cost and guarantees the advantage that the CPU mainboard can reliable and stable operation.

Drawings

Fig. 1 is a schematic block diagram of a dual power control circuit of a low power consumption motherboard according to a preferred embodiment of the present invention;

fig. 2 is a circuit diagram of a first power module of a dual power control circuit of a low power consumption motherboard according to a preferred embodiment of the present invention;

fig. 3 is a circuit diagram of a second power module of the dual power control circuit of the low power consumption motherboard according to the preferred embodiment of the present invention;

fig. 4 is a circuit diagram of a monitoring comparison module of a dual power control circuit of a low power consumption motherboard according to a preferred embodiment of the present invention;

fig. 5 is a circuit diagram of the fast switching module of the dual power control circuit of the low power consumption motherboard according to the preferred embodiment of the present invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples. It should be noted that, if there is no conflict, the embodiments and various features in the embodiments of the present invention may be combined with each other, and all are within the scope of the present invention.

Example one

Referring to fig. 1, the present invention discloses a dual power control circuit of a low power consumption motherboard, which includes: the device comprises a first power supply module 1, a second power supply module 2, a monitoring comparison module 3 and a quick switching module 4; the first power supply module 1 and the second power supply module 2 provide power supply output for the mainboard; the first power supply module 1 and the second power supply module 2 are electrically connected with the fast switching module 4; the first power supply module 1 and the second power supply module 2 are respectively electrically connected with the monitoring comparison module 3; under the abnormal condition, the first power supply module 1 and the second power supply module 2 simultaneously supply power to the mainboard; the monitoring and comparing module 3 monitors the voltage of the first power module 1 and the voltage of the second power module 2 in real time, and when the voltage of the first power module 1 or the voltage of the second power module 2 is abnormal, the fast switching module 4 inputs the abnormal power module to control the abnormal power module to supply power independently. The utility model discloses there is low cost and guarantees the advantage that the CPU mainboard can reliable and stable operation. The utility model discloses a low-cost non-redundant dual power supply design uses two mains operated in the complete machine, and when one of them power goes wrong, another power can be switched rapidly and make the system normally work for independent power supply, provides stable, low-cost scheme for the customer. Therefore, the utility model discloses there is low cost and guarantees the advantage that the CPU mainboard can reliable and stable operation.

Preferably, referring to fig. 4, the fast switching mode, 4, includes a fast switch U146; the first end A1 of the fast switch U146 is electrically connected to the first power module 1, the second end A2 of the fast switch U146 is electrically connected to the second power module 2, and the third K of the fast switch U146 is grounded. In this embodiment, the model of the fast switch is STP3035 fast switch. It can be understood that the STP3035 fast switch is a common cathode fast recovery diode, which realizes fast and efficient switching of the first power module and the second power module.

Preferably, the fast switching module 4 further includes a first capacitor C128, a second capacitor C37 and a third capacitor CE 24; a first end of the first capacitor C128 is electrically connected to the third end K of the fast switch U146, and a second end of the first capacitor C128 is grounded; the first capacitor C128, the second capacitor C37 and the third capacitor CE24 are connected in parallel. It can be understood that the first capacitor, the second capacitor and the third capacitor are connected in parallel to improve a power factor, improve a voltage quality of the fast switching module and reduce a line loss. Consequently low-power consumption mainboard's dual power control circuit reliability high.

Preferably, referring to fig. 4, the monitoring comparing module 2 includes a first monitoring comparing unit 31 and a second monitoring comparing unit 32; the first monitoring and comparing unit 31 is electrically connected with the first power module 32, the first monitoring and comparing unit 31 is electrically connected with the second monitoring and comparing unit 32, and the second monitoring and comparing unit 32 is electrically connected with the second power module 2. It can be understood that, in this embodiment, normally, the first power module 1 and the second power module 2 jointly supply power to the motherboard. The first monitoring and comparing unit 31 monitors the input voltage for the first power module 1, and the second monitoring and comparing unit 32 monitors the input voltage for the second power module. When any one of the input voltage of the first power module 1 and the input voltage of the second power module 2 is abnormal, the monitoring and comparing module transmits an abnormal signal to the fast switching module. The fast switching module 3 cuts off the input of the abnormal power supply module and controls the non-abnormal power supply module to independently supply power. Because the utility model discloses can guarantee the advantage that the CPU mainboard can reliable and stable operation.

Preferably, the first monitoring and comparing unit 31 includes a first field effect transistor Q90; the gate of the first fet Q90 is electrically connected to the first power module 1, the drain of the first fet Q90 is electrically connected to the second monitoring and comparing unit 32, and the source of the first fet Q90 is grounded.

Preferably, the first monitoring and comparing unit 31 further includes a fifth capacitor C411, a second resistor R2104 and a third resistor R2105. The first end of the fifth capacitor C411, the first end of the second resistor R2104 and the first end of the third resistor R2105 are electrically connected to the gate of the first field effect transistor Q90, the second end of the fifth capacitor C411 is grounded, the second end of the second resistor R2104 is electrically connected to the input voltage terminal of the first power module 1, and the second end of the third resistor R2105 is grounded. It can be understood that, in the present embodiment, the first fet Q90 and the second fet Q85 are both used as comparison switches.

The second monitoring and comparing unit 32 comprises a second field effect transistor Q85; the gate of the second fet Q85 is electrically connected to the second power module 2 and the first monitoring and comparing unit 31, the drain of the second fet Q85 is electrically connected to the fast switching unit 4, and the source of the second fet Q85 is grounded.

Preferably, the second monitoring and comparing unit 32 further includes a sixth capacitor C1515, a fourth resistor R2103, a fifth resistor R2102 and a sixth resistor R2108. A first end of the sixth capacitor C1515, a first end of the fourth resistor R2103, and a first end of the fifth resistor R2102 are electrically connected to the gate of the second fet Q85, a second end of the sixth capacitor C1515 is grounded, a second end of the fourth resistor R2103 is electrically connected to the input voltage terminal of the second power module 2, and a second end of the fifth resistor R2102 is grounded. A first end of the sixth resistor R2108 is electrically connected to the drain of the second fet Q85, and a second end of the sixth resistor R2108 is electrically connected to the fast switching module 4.

Preferably, the first monitoring comparing unit 31 and the second monitoring comparing unit 32 have the same structure.

Preferably, referring to fig. 2, the first power module 1 includes a first switch Q26, a fourth capacitor C1, a first resistor R568, a first magnetic bead FB30, a second magnetic bead FB32, and a first fuse patch F4; a first terminal of the first switch Q26 is electrically connected to a first terminal of the fast switch U146, a second terminal of the first switch Q26 is electrically connected to a first terminal of the fourth capacitor C1 and a first terminal of the first resistor R568, respectively, and a third terminal of the first switch Q26 is electrically connected to a second terminal of the fourth capacitor C1 and a second terminal of the first resistor R568, respectively; the first end of the first magnetic bead FB30, the first end of the second magnetic bead FB32, and the first end of the first fuse patch F4 are electrically connected to the second end of the first resistor R568, the second end of the first fuse patch F4 is electrically connected to the first end and the second end of the first power supply port ATX _12V of the motherboard, and the second end of the first magnetic bead FB30 and the second end of the second magnetic bead FB32 are electrically connected to the third end and the fourth end of the first power supply port ATX _12V of the motherboard, respectively. It can be understood that the first magnetic bead FB30 and the second magnetic bead FB32 are used for preventing electromagnetic interference of the first power module 1. The first fuse patch F4 is used for overcurrent protection.

Preferably, the first power module 1 further includes a seventh resistor R1201, an eighth resistor R148, and a seventh capacitor C181. A first end of the seventh resistor R1201 is electrically connected to the third end of the first switch Q26, and a second end of the seventh resistor R1201 is grounded. A first end of the eighth resistor R148 is electrically connected to a first end of the first fuse patch F4, a second end of the eighth resistor R148 is electrically connected to a first end of the seventh capacitor C181, and a second end of the seventh capacitor C181 is grounded.

Preferably, the second power module 2 includes a second switch Q11, a third magnetic bead F889, a fourth magnetic bead F890 and a second fuse patch F6. A first end of the second switch Q11 is electrically connected to a second end of the fast switching module 4, a second end of the second switch Q11 is electrically connected to a first end of the second fuse patch F6, a first end of the third magnetic bead F889, and a first end of the fourth magnetic bead F890, a second end of the first fuse patch F6 is electrically connected to a first end and a second end of the second power supply port ATX _12V1 of the motherboard, and a second end of the third magnetic bead F889 and a second end of the fourth magnetic bead F890 are electrically connected to a third end and a fourth end of the second power supply port ATX _12V1, respectively. It can be understood that the third bead F889 and the second bead F890 are used for preventing electromagnetic interference of the first power module 1. The first fuse patch F6 is used for overcurrent protection.

In a preferred embodiment, the second power module 2 further includes a ninth resistor R2106, a tenth resistor R2107, an eleventh resistor R306, a twelfth resistor R305, an eighth capacitor C151, and a ninth capacitor C10. A first end of the ninth resistor R2106 is electrically connected to a first end of the second fuse patch F6, a second end of the ninth resistor R2106 is electrically connected to a first end of the eighth capacitor C151, and a second end of the eighth capacitor C151 is grounded. A first end of the tenth resistor R2107 and a first end of the ninth capacitor C10 are electrically connected to the monitoring and comparing module 3 and the fast switching module 4, a second end of the tenth resistor R2107 and a second end of the ninth capacitor C10 are electrically connected to a first end of the eleventh resistor R306 and a first end of the twelfth resistor R305, respectively, a second end of the eleventh resistor R306 is electrically connected to a second end of the second switch Q11, and a second end of the twelfth resistor R305 is used for inputting a dc voltage.

In conclusion, because the utility model discloses a dual power supply control circuit of low-power consumption mainboard includes: the device comprises a first power supply module 1, a second power supply module 2, a monitoring comparison module 3 and a quick switching module 4; the first power supply module 1 and the second power supply module 2 provide power supply output for the mainboard; the first power supply module 1 and the second power supply module 2 are electrically connected with the fast switching module 4; the first power supply module 1 and the second power supply module 2 are respectively electrically connected with the monitoring comparison module 3; under the abnormal condition, the first power supply module 1 and the second power supply module 2 simultaneously supply power to the mainboard; the monitoring and comparing module 3 monitors the voltage of the first power module 1 and the voltage of the second power module 2 in real time, and when the voltage of the first power module 1 or the voltage of the second power module 2 is abnormal, the fast switching module 4 inputs the abnormal power module to control the abnormal power module to supply power independently. The utility model discloses there is low cost and guarantees the advantage that the CPU mainboard can reliable and stable operation. The utility model discloses a low-cost non-redundant dual power supply design uses two mains operated in the complete machine, and when one of them power goes wrong, another power can be switched rapidly and make the system normally work for independent power supply, provides stable, low-cost scheme for the customer. Therefore, the utility model discloses there is low cost and guarantees the advantage that the CPU mainboard can reliable and stable operation.

The dual power control circuit of the low power consumption motherboard provided by the utility model is introduced in detail, and a specific example is applied to explain the principle and the implementation mode of the utility model, and the description of the above embodiment is only used for helping to understand the method and the core idea of the utility model; meanwhile, to the general technical personnel in this field, according to the utility model discloses an idea, all can have the change part on concrete implementation and application scope, to sum up, this description content only is the utility model discloses an embodiment, does not consequently restrict the utility model discloses a patent scope, all utilize the equivalent structure or the equivalent flow transform that the content of the description and the attached drawing did, or directly or indirectly use in other relevant technical fields, all the same reason is included in the utility model discloses a patent protection scope. And should not be construed as limiting the invention.

Claims

1. A dual-power control circuit of a low-power-consumption mainboard is characterized by comprising a first power module, a second power module, a monitoring comparison module and a fast switching module; the first power supply module and the second power supply module provide power supply output for the mainboard; the first power supply module and the second power supply module are electrically connected with the fast switching module; the first power supply module and the second power supply module are respectively and electrically connected with the monitoring comparison module; under the non-abnormal condition, the first power supply module and the second power supply module simultaneously supply power to the mainboard; the monitoring and comparing module monitors the voltage of the first power supply module and the voltage of the second power supply module in real time, and when the voltage of the first power supply module or the voltage of the second power supply module is abnormal, the fast switching module cuts off the input of the abnormal power supply module and controls the non-abnormal power supply module to supply power independently.

2. The dual power control circuit of the low power consumption motherboard according to claim 1, wherein said fast switching module comprises a fast switch; the first end of the rapid switcher is electrically connected with the first power supply module, the second end of the rapid switcher is electrically connected with the second power supply module, and the third end of the rapid switcher is grounded.

3. The dual power control circuit of the low power consumption main board according to claim 2, wherein the fast switching module further comprises a first capacitor, a second capacitor and a third capacitor; the first end of the first capacitor is electrically connected with the third end of the fast switcher, and the second end of the first capacitor is grounded; the first capacitor, the second capacitor and the third capacitor are connected in parallel.

4. The dual-power-supply control circuit of the low-power-consumption main board according to claim 3, wherein the monitoring and comparing module comprises a first monitoring and comparing unit and a second monitoring and comparing unit; the first monitoring comparison unit is electrically connected with the first power supply module, the first monitoring comparison unit is electrically connected with the second monitoring comparison unit, and the second monitoring comparison unit is electrically connected with the second power supply module.

5. The dual-power-supply control circuit of the low-power-consumption main board according to claim 4, wherein the first monitoring and comparing unit comprises a first field effect transistor; the grid electrode of the first field effect transistor is electrically connected with the first power supply module, the drain electrode of the first field effect transistor is electrically connected with the second monitoring comparison unit, and the source electrode of the first field effect transistor is grounded.

6. The dual power control circuit of the low power consumption main board according to claim 4, wherein the first monitoring comparing unit and the second monitoring comparing unit have the same structure.

7. The dual-power-supply control circuit of the low-power-consumption main board, according to claim 6, wherein the first power supply module comprises a first switch, a fourth capacitor, a first resistor, a first magnetic bead, a second magnetic bead and a first fuse patch; a first end of the first switch is electrically connected with a first end of the fast switch, a second end of the first switch is electrically connected with a first end of the fourth capacitor and a first end of the first resistor respectively, and a third end of the first switch is electrically connected with a second end of the fourth capacitor and a second end of the first resistor respectively; the first end of the first magnetic bead, the first end of the second magnetic bead and the first end of the first fuse patch are respectively electrically connected with the second end of the first resistor, the second end of the first fuse patch is electrically connected with the first end and the second end of the first power supply port of the mainboard, and the second end of the first magnetic bead and the second end of the second magnetic bead are respectively electrically connected with the third end and the fourth end of the first power supply port of the mainboard.