CN210864616U - Power supply control circuit for OPS microcomputer - Google Patents
Power supply control circuit for OPS microcomputer Download PDFInfo
- Publication number
- CN210864616U CN210864616U CN201922474125.9U CN201922474125U CN210864616U CN 210864616 U CN210864616 U CN 210864616U CN 201922474125 U CN201922474125 U CN 201922474125U CN 210864616 U CN210864616 U CN 210864616U
- Authority
- CN
- China
- Prior art keywords
- power supply
- resistor
- unit
- jae
- ops
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Power Sources (AREA)
Abstract
The utility model discloses an OPS microcomputer power supply control circuit, it is including switching on unit, the control unit and delay unit. One end of the conduction unit is used for being connected with a main power supply, and the other end of the conduction unit is used for being connected with a JAE socket; one end of the control unit is used for being connected with the JAE socket, and the other end of the control unit is connected with the conduction unit; the delay unit is connected with the control unit; the control unit and the delay unit are used for controlling the conduction unit to conduct so that the main power supply supplies power to the OPS microcomputer. The utility model discloses a protection circuit switches on the unit through utilizing sharp the control unit and delay unit control to carry out the time delay and switches on so that main power supply source supplies power to the OPS microcomputer, can prevent that the OPS microcomputer from inserting with electricity, and then reaches the purpose of protecting to the OPS microcomputer.
Description
Technical Field
The utility model relates to a OPS microcomputer power supply technical field especially relates to an OPS microcomputer power supply control circuit.
Background
An OPS (open plug capable specification) microcomputer is a computer module meeting an open Pluggable specification, in the OPS specification, a JAE TX24/25-80R socket is used for connecting the OPS microcomputer and an OPS adapter plate, in the prior art, an internal power supply is connected to the OPS adapter plate, and then the OPS adapter plate is connected to the JAE socket, so that the OPS microcomputer is powered. When the terminal is normally started, the voltage on the JAE socket normally exists, and the change can not occur due to the fact that whether the OPS microcomputer is accessed or not, so that the OPS microcomputer is inserted into the JAE socket in a hot-plugging mode, namely, when the JAE male seat is in butt joint with the JAE female seat, larger impact current can occur on the power supply PIN, even sparks occur, and the OPS microcomputer is damaged.
Therefore, in order to solve the above problems, the present invention provides a power supply control circuit for an OPS microcomputer, which can prevent the OPS microcomputer from being plugged in and out with power.
SUMMERY OF THE UTILITY MODEL
The utility model provides an OPS microcomputer power supply control circuit aims at solving the fragile problem of current OPS microcomputer live plug in-process.
In order to solve the technical problem, the utility model provides an aspect provides an OPS microcomputer power supply control circuit, and it includes: the power supply device comprises a conduction unit, a power supply unit and a power supply unit, wherein one end of the conduction unit is used for being connected with a main power supply, and the other end of the conduction unit is used for being connected with a JAE socket; one end of the control unit is used for being connected with the JAE socket, and the other end of the control unit is connected with the conduction unit; the delay unit is connected with the control unit; the control unit and the delay unit are used for controlling the conduction unit to conduct delay conduction so that the main power supply supplies power to the OPS microcomputer.
Furthermore, one end of the control unit is connected with a grounding pin of the JAE socket, and the grounding pin of the JAE socket is used for detecting whether the OPS microcomputer is inserted into the JAE socket or not.
Further, the control unit includes a first control module and a second control module, one end of the first control module is used for being connected with a ground pin of the JAE socket, the other end of the first control module is connected with one end of the second control module, and one end of the second control module is connected with the conduction unit.
Further, the first control module comprises a first triode, a ninth resistor, a tenth resistor and a thirteenth resistor; one end of the ninth resistor is connected with a power supply voltage, and the other end of the ninth resistor is connected between the second control module and the collector of the first triode; one end of the tenth resistor is connected with the power supply voltage, and the other end of the tenth resistor is connected with a grounding pin of the JAE socket; one end of the thirteenth resistor is connected with a grounding pin of the JAE socket, and the other end of the thirteenth resistor is connected with a base electrode of the first triode; and the emitter of the first triode is grounded.
Further, the second control module comprises a second triode, an eighth resistor and a twelfth resistor; one end of the eighth resistor is connected with the conducting unit, and the other end of the eighth resistor is connected with a collector of the second triode; one end of the twelfth resistor is connected between the collector of the first triode and one end of the ninth resistor, and the other end of the twelfth resistor is connected with the base of the second triode; and the emitter of the second triode is grounded.
Further, the first triode and the second triode are both NPN type triodes.
Furthermore, one end of the delay unit is connected between the base of the second triode and the twelfth resistor, and the other end of the delay unit is connected with the base of the first triode.
Further, the delay unit comprises an eleventh capacitor and a twelfth capacitor, and the eleventh capacitor is connected in parallel with the twelfth capacitor.
Further, the conduction unit comprises a first MOS transistor, a second MOS transistor, an eighth capacitor, a seventh resistor, a first diode, and a second diode; the first MOS tube and the second MOS tube are connected in parallel, and the drain electrode, the source electrode and the grid electrode of the first MOS tube and the second MOS tube are respectively connected with the main power supply, the JAE socket and the eighth resistor; one end of the first diode is connected with the drain electrode of the first MOS tube, and the other end of the first diode is connected with the source electrode of the first MOS tube; one end of the second diode is connected with the drain electrode of the second MOS tube, and the other end of the second diode is connected with the source electrode of the second MOS tube; one end of the seventh resistor is connected with the JAE socket, and the other end of the seventh resistor is connected with the eighth resistor; the eighth capacitor is connected in parallel with the seventh resistor.
Further, the first MOS transistor and the second MOS transistor are both PMOS transistors.
The utility model discloses an OPS microcomputer power supply control circuit switches on the unit through utilizing the control unit and delay unit control and carries out the time delay and switch on so that main power supply source supplies power to the OPS microcomputer, can prevent that the OPS microcomputer from inserting with electricity, and then reaches the purpose of carrying out the protection to the OPS microcomputer. The utility model discloses an OPS microcomputer power supply control circuit has solved the fragile problem in the hot plug in-process of current OPS microcomputer.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.
FIG. 1 is a schematic diagram of the power supply of an OPS microcomputer according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a power supply control circuit of an OPS microcomputer according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of an OPS microcomputer power supply control circuit according to an embodiment of the present invention;
fig. 4 is a timing diagram illustrating an operation of the power supply control circuit of the OPS microcomputer according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
FIG. 1 is a schematic diagram of the power supply of an OPS microcomputer according to an embodiment of the present invention; fig. 2 is a schematic structural diagram of a power supply control circuit of an OPS microcomputer according to an embodiment of the present invention; fig. 3 is a schematic circuit diagram of an OPS microcomputer power supply control circuit according to an embodiment of the present invention. Referring to fig. 1 to 3, the OPS microcomputer power supply control circuit 10 of the present embodiment includes a control unit 11, a delay unit 12, and a conduction unit 13. Wherein, one end of the conducting unit 13 is used for connecting with the main power supply 40, and the other end is used for connecting with the JAE socket 20; one end of the control unit 11 is used for being connected with the JAE socket 20, and the other end of the control unit is connected with the conduction unit 13; the delay unit 12 is connected with the control unit 11; the control unit 11 and the delay unit 12 are configured to control the conducting unit 13 to conduct so that the main power supply 40 supplies power to the OPS microcomputer 30. In this embodiment, the control unit 11 and the delay unit 12 are used to control the conduction unit 13 to conduct the delay so that the main power supply 40 supplies power to the OPS microcomputer 30, thereby preventing the OPS microcomputer 30 from being plugged in with electricity, and further achieving the purpose of protecting the OPS microcomputer 30.
In an embodiment, for example, in this embodiment, one end of the control unit 11 is connected to a ground pin of the JAE socket 20, and the ground pin of the JAE socket 20 is used to detect whether the OPS microcomputer 30 is inserted into the JAE socket 20. Specifically, the control unit 11 includes a first control module 111 and a second control module 112, one end of the first control module 111 is used for being connected to a ground pin of the JAE socket 20, the other end of the first control module is connected to one end of the second control module 112, and one end of the second control module 112 is connected to the conducting unit 13. More specifically, the first control module 111 includes a first transistor Q4, a ninth resistor R9, a tenth resistor R10, and a thirteenth resistor R13; one end of the ninth resistor R9 is connected to a supply voltage VCC, and the other end is connected between the second control module 112 and the collector of the first transistor Q4; one end of the tenth resistor R10 is connected to the power supply voltage VCC, and the other end is connected to the ground pin of the JAE socket 20; one end of the thirteenth resistor R13 is connected with the grounding pin of the JAE socket 20, and the other end is connected with the base of the first triode Q4; the emitter of the first transistor Q4 is grounded. The second control module 112 includes a second transistor Q3, an eighth resistor R8, and a twelfth resistor R12; one end of the eighth resistor R8 is connected to the conducting unit 13, and the other end is connected to the collector of the second transistor Q3; one end of the twelfth resistor R12 is connected between the collector of the first transistor Q4 and one end of the ninth resistor R9, and the other end is connected with the base of the second transistor Q3; the emitter of the second transistor Q3 is grounded. In this embodiment, the first transistor Q4 and the second transistor Q3 are both NPN transistors. In other embodiments, the first transistor Q4 and the second transistor Q3 may not be NPN transistors, depending on the actual circuit requirements.
In an embodiment, for example, in this embodiment, one end of the delay unit 12 is connected between the base of the second transistor Q3 and the twelfth resistor R12, and the other end is connected to the base of the first transistor Q4. Specifically, the delay unit 12 includes an eleventh capacitor C11 and a twelfth capacitor C12, and the eleventh capacitor C11 is connected in parallel with the twelfth capacitor C12. In this embodiment, when the OPS microcomputer 30 is inserted, the base voltage of the first transistor Q4 is at a low level, the first transistor Q4 is turned off, the power supply voltage VCC charges the eleventh capacitor C11 and the twelfth capacitor C12, and the base voltage of the second transistor Q3 rises until it is turned on, so that the eleventh capacitor C11 and the twelfth capacitor C12 can perform a charging delay, and the delay is longer as the capacitance value is larger.
In an embodiment, for example, in this embodiment, the conducting unit 13 includes a first MOS transistor Q1, a second MOS transistor Q2, an eighth capacitor C8, a seventh resistor R7, a first diode D1, and a second diode D2; the first MOS transistor Q1 is connected in parallel with the second MOS transistor Q2, and the drains, sources, and gates of the first MOS transistor Q1 and the second MOS transistor Q2 are respectively connected to the JAE socket 20, the main power supply 40, and the eighth resistor R8; one end of the first diode D1 is connected with the drain of the first MOS transistor Q1, and the other end is connected with the source of the first MOS transistor Q1; one end of the second diode D2 is connected to the drain of the second MOS transistor Q2, and the other end is connected to the source of the second MOS transistor Q2; one end of the seventh resistor R7 is connected to the main power supply 40, and the other end is connected to the eighth resistor R8; the eighth capacitor C8 is connected in parallel with the seventh resistor R7. In this embodiment, the first MOS transistor Q1 and the second MOS transistor Q2 are both PMOS transistors, and two MOS transistors are connected in parallel to reduce the current when a single MOS transistor is used, so as to reduce the temperature rise problem of the first MOS transistor Q1 and the second MOS transistor Q2 caused by excessive current.
The following describes how to protect the OPS microcomputer 30 by the OPS microcomputer power supply control circuit 10 to prevent the OPS microcomputer 30 from being inserted with power, thereby achieving the purpose of protecting the OPS microcomputer 30.
The ground pin of the JAE jack 20 is used as a switch for controlling, and appropriate resistance values are set for the ninth resistor R9, the tenth resistor R10 and the thirteenth resistor R13, so that the first transistor Q4 can operate in a switching state. When the OPS microcomputer 30 is not connected to the JAE jack 20, the base voltage of the first transistor Q4 is at a high level due to the pull-up action of the tenth resistor R10, the first transistor Q4 is turned on, and at this time, the base voltage of the second transistor Q3 is at a low level, and the second transistor Q3 is turned off; since the second transistor Q3 is turned off, the gate voltages of the first MOS transistor Q1 and the second MOS transistor Q2 are pulled up to the voltage of the main power supply 40 through the seventh resistor R7, i.e., high level; according to the switching principle of the P-channel MOS transistor, that is, when the gate is at a high level, the MOS transistor is not turned on, and current cannot flow from the source to the drain, so that no current flows from the drains of the first MOS transistor Q1 and the second MOS transistor Q2, that is, no current flows from the JAE socket 20. When the OPS microcomputer 30 is plugged into the JAE jack 20, the base voltage of the first transistor Q4 changes from high level to low level, the first transistor Q4 is turned off, and at this time, the base voltage of the second transistor Q3 starts to charge the eleventh capacitor C11 and the twelfth capacitor C12 due to the pull-up action of the ninth resistor R9, and the base voltage of the second transistor Q3 is raised to be turned on; the gate voltage of the first MOS transistor Q1 and the gate voltage of the second MOS transistor Q2 are low level due to the conduction of the second transistor Q3; according to the switching principle of the P-channel MOS transistor, that is, when the gate is at ground level, the MOS transistor is turned on, and current can flow from the source to the drain, so the drain voltages of the first MOS transistor Q1 and the second MOS transistor Q2 are equal to the voltage of the main power supply 40.
Referring to fig. 4, fig. 4 is a timing diagram illustrating an operation of the OPS microcomputer power supply control circuit 10 according to an embodiment of the present invention. As shown in fig. 4, when the OPS microcomputer 30 is not connected to the JAE jack 20, the ground pin of the JAE jack 20 is at a high level, the first transistor Q4 is turned on, and the voltage at the base of the second transistor Q3 is at a low level; the OPS microcomputer 30 is switched in at the time Ta, the ground pin of the JAE socket 20 changes from high level to low level, the first triode Q4 is cut off, the power supply voltage VCC starts to charge the eleventh capacitor C11 and the twelfth capacitor C12, and the voltage on the base of the second triode Q3 gradually rises until the second triode Q3 is turned on, which is the time Tb; after the second triode Q3 is turned on, the gates of the first MOS transistor Q1 and the second MOS transistor Q2 are at a low level, and the first MOS transistor Q1 and the second MOS are turned on; and the time Tb to Tc is the delay time for supplying power to the OPS microcomputer 30; after time Tc, a current flows from the main power supply 40 to the OPS microcomputer 30 to supply power to the OPS microcomputer 30. Therefore, when the OPS microcomputer 30 is not plugged in, the voltage on the JAE jack 20 does not exist, and when the OPS microcomputer 30 is plugged in, the power supply to the OPS microcomputer 30 is started after a certain delay, so that the OPS microcomputer 30 can be well prevented from being damaged due to the hot plugging of the OPS microcomputer 30.
The utility model provides an OPS microcomputer power supply control circuit switches on the unit through utilizing the control unit and delay unit control to switch on so that main power supply source supplies power to OPS microcomputer, can prevent that OPS microcomputer from inserting with electricity, and then reaches the purpose of carrying out the protection to OPS microcomputer. Specifically, the utility model discloses an utilize the ground connection pin of JAE socket as the switch, with switching on or ending of first triode of control and second triode, the delay effect is charged to rethread eleventh electric capacity and twelfth electric capacity, make OPS microcomputer insert just can begin the power supply after certain time delay, switch on and end of controlling first MOS pipe and second MOS through the second triode at last, thereby realize the final power supply to OPS microcomputer, whole control circuit's design, when JAE public seat and female seat butt joint when having avoided the hot plug of OPS microcomputer that can be fine, the great impulse current who appears on the power supply pin. The utility model discloses an OPS microcomputer power supply control circuit has solved the fragile problem in the hot plug in-process of current OPS microcomputer.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An OPS microcomputer power supply control circuit, comprising:
the power supply device comprises a conduction unit, a power supply unit and a power supply unit, wherein one end of the conduction unit is used for being connected with a main power supply, and the other end of the conduction unit is used for being connected with a JAE socket;
one end of the control unit is used for being connected with the JAE socket, and the other end of the control unit is connected with the conduction unit; and
the delay unit is connected with the control unit;
the control unit and the delay unit are used for controlling the conduction unit to conduct delay conduction so that the main power supply supplies power to the OPS microcomputer.
2. The OPS microcomputer power supply control circuit of claim 1, wherein one end of the control unit is connected to a ground pin of the JAE socket, and the ground pin of the JAE socket is used to detect whether the OPS microcomputer is inserted into the JAE socket.
3. The OPS microcomputer power supply control circuit according to claim 2, wherein the control unit includes a first control module and a second control module, one end of the first control module is used for being connected with a ground pin of the JAE socket, the other end of the first control module is connected with one end of the second control module, and one end of the second control module is connected with the conducting unit.
4. The OPS microcomputer power supply control circuit of claim 3, wherein the first control module comprises a first triode, a ninth resistor, a tenth resistor and a thirteenth resistor; one end of the ninth resistor is connected with a power supply voltage, and the other end of the ninth resistor is connected between the second control module and the collector of the first triode; one end of the tenth resistor is connected with the power supply voltage, and the other end of the tenth resistor is connected with a grounding pin of the JAE socket; one end of the thirteenth resistor is connected with a grounding pin of the JAE socket, and the other end of the thirteenth resistor is connected with a base electrode of the first triode; and the emitter of the first triode is grounded.
5. The OPS microcomputer power supply control circuit of claim 4, wherein the second control module comprises a second triode, an eighth resistor and a twelfth resistor; one end of the eighth resistor is connected with the conducting unit, and the other end of the eighth resistor is connected with a collector of the second triode; one end of the twelfth resistor is connected between the collector of the first triode and one end of the ninth resistor, and the other end of the twelfth resistor is connected with the base of the second triode; and the emitter of the second triode is grounded.
6. The OPS microcomputer power supply control circuit of claim 5, wherein the first transistor and the second transistor are NPN transistors.
7. The OPS microcomputer power supply control circuit of claim 5, wherein one end of the delay unit is connected between the base of the second transistor and the twelfth resistor, and the other end is connected to the base of the first transistor.
8. The OPS microcomputer power supply control circuit of claim 7, wherein the delay unit includes an eleventh capacitor and a twelfth capacitor, and the eleventh capacitor is connected in parallel with the twelfth capacitor.
9. The OPS microcomputer power supply control circuit of claim 5, wherein the conducting unit comprises a first MOS transistor, a second MOS transistor, an eighth capacitor, a seventh resistor, a first diode, and a second diode; the first MOS tube and the second MOS tube are connected in parallel, and the drain electrode, the source electrode and the grid electrode of the first MOS tube and the second MOS tube are respectively connected with the JAE socket, the main power supply and the eighth resistor; one end of the first diode is connected with the drain electrode of the first MOS tube, and the other end of the first diode is connected with the source electrode of the first MOS tube; one end of the second diode is connected with the drain electrode of the second MOS tube, and the other end of the second diode is connected with the source electrode of the second MOS tube; one end of the seventh resistor is connected with the main power supply, and the other end of the seventh resistor is connected with the eighth resistor; the eighth capacitor is connected in parallel with the seventh resistor.
10. The OPS microcomputer power supply control circuit of claim 9, wherein the first MOS transistor and the second MOS transistor are both PMOS transistors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922474125.9U CN210864616U (en) | 2019-12-31 | 2019-12-31 | Power supply control circuit for OPS microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922474125.9U CN210864616U (en) | 2019-12-31 | 2019-12-31 | Power supply control circuit for OPS microcomputer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210864616U true CN210864616U (en) | 2020-06-26 |
Family
ID=71291559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922474125.9U Active CN210864616U (en) | 2019-12-31 | 2019-12-31 | Power supply control circuit for OPS microcomputer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210864616U (en) |
-
2019
- 2019-12-31 CN CN201922474125.9U patent/CN210864616U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103023076B (en) | Car charge control device and car | |
| CN103208822A (en) | Universal serial bus (USB) charging control circuit | |
| CN102025169B (en) | USB charger and on-off control system and method thereof | |
| CN104253459A (en) | USB device with power supply mode switching function | |
| CN203859558U (en) | Electronic equipment and external charging circuit thereof | |
| CN103683242A (en) | Load protection circuit | |
| CN105022468A (en) | USB adapter and USB line | |
| CN106602532B (en) | Current-limiting circuit and its driving method, PMIC protection system and display apparatus protecting system | |
| CN205584005U (en) | Power switching circuit and power supply system | |
| CN103855781B (en) | Charger and electronic installation | |
| CN104467167B (en) | A kind of power path management circuit | |
| CN210864616U (en) | Power supply control circuit for OPS microcomputer | |
| CN206313431U (en) | Electronic equipment and its overvoltage crowbar | |
| CN104038194B (en) | A kind of power switch circuit | |
| CN105182833A (en) | Double-power-supply power supply and power-off sequential control device and method | |
| CN106100014B (en) | A kind of charging circuit and charging method | |
| CN101902061B (en) | Method for controlling connection and disconnection of charge path of battery, circuit and battery | |
| CN103885861A (en) | Testing device for start-up test of electronic device | |
| CN206619921U (en) | The control circuit and control device of a kind of timing start-up and automatic shutdown | |
| CN215419641U (en) | Communication system | |
| CN205015670U (en) | Dual power supply and outage time schedule control device | |
| CN210110646U (en) | Protection circuit for preventing transient impulse current of relay | |
| CN100539366C (en) | A kind of universal serial bus device method of supplying power to and system | |
| CN203813714U (en) | Motor driving device and frequency-conversion household electrical appliance | |
| CN209001823U (en) | A kind of power supply soft-start circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |