CN209056929U - A kind of counnter attack connection control circuit and vehicle-mounted dedicated DC-DC power module - Google Patents
A kind of counnter attack connection control circuit and vehicle-mounted dedicated DC-DC power module Download PDFInfo
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- CN209056929U CN209056929U CN201821526437.9U CN201821526437U CN209056929U CN 209056929 U CN209056929 U CN 209056929U CN 201821526437 U CN201821526437 U CN 201821526437U CN 209056929 U CN209056929 U CN 209056929U
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Abstract
The utility model provides a kind of vehicle-mounted dedicated DC-DC power module counnter attack connection control circuit, including sequentially connected external voltage regulator circuit, one-way conduction element and bleeder circuit, and for adjusting the inside voltage regulator circuit for loading the voltage on one-way conduction element, when external power supply just connects, one-way conduction element conductive, and then make vehicle-mounted dedicated DC-DC power module conducting, when external power supply is reversely connected, one-way conduction element is not turned on, and then it is not turned on vehicle-mounted dedicated DC-DC power module, and then realize anti-reverse effect.
Description
Technical field
The invention belongs to circuit protection technical fields, and in particular to a kind of counnter attack connection control circuit and vehicle-mounted dedicated DC-DC
Power module.
Background technique
General power module is reversed by input terminal in order to prevent in design, causes damage of product, most common method is
Using anti-plug misconnection head, the positive and negative terminal of input terminal plug is made into different size, anti-inserted problem can be inputted with effective solution.But
Be DC-DC power module when in use, generally DC-DC power module is assembled on circuit board, and input terminal is all standard
Part cannot effectively distinguish input terminal positive and negative anodes, so cannot generally use anti-plug misconnection in DC-DC power module
Head, so the input of DC-DC power module is anti-reverse to be particularly important.
Summary of the invention
In order to solve the problems, such as exist under the prior art, by further improvement of existing technologies, in DC-DC power source mould
The input terminal of block connects reverse-connection preventing circuit, when making DC-DC power module input is proper to connect, the conducting of DC-DC power module circuit；When
DC-DC power module input terminal reversal connection when, DC-DC power module circuit is not turned on, to play the role of anti-reverse.
The utility model is achieved through the following technical solutions foregoing invention purpose:
A kind of counnter attack connection control circuit and vehicle-mounted dedicated DC-DC power module, including external voltage regulator circuit and just connect conducting
Circuit, external voltage regulator circuit, which is connected to, just to be connect between turning circuit and the input terminal of external power supply, is just connecing the output of turning circuit
End connects the power switch circuit input terminal of vehicle-mounted dedicated DC-DC power module.
Further, just connecing turning circuit includes one-way conduction element.
Further, just connecing turning circuit further includes bleeder circuit and internal voltage regulator circuit；Bleeder circuit is connected to unidirectionally
Between breakover element and external voltage regulator circuit；Internal voltage regulator circuit is connected on one-way conduction element and for keeping one-way conduction
Voltage stabilization on element.
Further, one-way conduction element uses metal-oxide-semiconductor Q1, the grounded drain of metal-oxide-semiconductor Q1.
Further, bleeder circuit includes resistance R5 and resistance R10, the output of one end of resistance R5 and external voltage regulator circuit
End connection, the other end of resistance R5 are connected with the grid of metal-oxide-semiconductor Q1；The other end of resistance R5 is also connect with one end of resistance R10,
The other end of resistance R10 is connect with the source electrode of metal-oxide-semiconductor Q1.
Further, internal voltage regulator circuit includes capacitor C4 and zener diode Z1, the both ends of capacitor C4 respectively with resistance
The both ends of R10 connect；The cathode of zener diode Z1 is connect with one end of resistance R10, the anode and resistance of zener diode Z1
The other end of R10 connects.
Further, external voltage regulator circuit includes capacitor C1, and capacitor C1 is connected to anode and the outside of zener diode Z1
Between power input.
Further, external voltage regulator circuit further includes capacitor C2 and capacitor C3, and capacitor C2 and capacitor C3 are connected to surely
Between the anode and external power input for pressing diode Z1.
Further, metal-oxide-semiconductor Q1 uses the N-type metal-oxide-semiconductor of body diode.
Further, a kind of vehicle-mounted dedicated DC-DC power module, including counnter attack connection control circuit, counnter attack connection control circuit
Output end connected with one end of the capacitor C15 of power switch circuit.
The utility model at least has the advantages that
Outside the input terminal increase counnter attack connection control circuit of vehicle-mounted dedicated DC-DC power module, counnter attack connection control circuit
Portion's voltage regulator circuit is used to keep inputting the voltage stabilization of vehicle-mounted dedicated DC-DC power module, after the processing of external voltage regulator circuit,
When by just connecing turning circuit, when DC-DC power module input, which is rectified, to be connect, turning circuit conducting, DC-DC power source mould are just being connect
The conducting of block circuit；When the input terminal reversal connection of DC-DC power module, just connecing turning circuit cannot be connected, DC-DC power source
Modular circuit is not turned on, to play the role of anti-reverse.And then reverse power connection is prevented to load-strap to damage.
Detailed description of the invention
It, below will be to attached needed in embodiment in order to illustrate more clearly of the technical solution of the utility model
Figure is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the utility model, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the principles of the present invention structure chart；
Fig. 2 is the principles of the present invention structure chart；
Fig. 3 is the anti-reverse circuit diagram of the utility model；
Fig. 4 is the output filter circuit figure of the vehicle-mounted dedicated DC-DC power module of the utility model；
Fig. 5 is the electric operation control circuit figure of the vehicle-mounted dedicated DC-DC power module of the utility model.
Specific embodiment
In the description of the present invention, it should be understood that term " center ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion is signified
Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this is practical
Novel limitation.
Term " first ", " second " be used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or
Implicitly indicate the quantity of indicated technical characteristic." first " is defined as a result, the feature of " second " can be expressed or imply
Ground includes one or more of the features.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two
It is a or more than two.
The utility model is further elaborated with reference to the accompanying drawings and examples.
As shown in Figure 1, the utility model includes external voltage regulator circuit and just connects turning circuit, the external voltage regulator circuit
It is connected to and just connects between turning circuit and the input terminal of external power supply, the output end for just connecing turning circuit connects vehicle-mounted dedicated DC-
The power switch circuit input terminal of DC power module.
To above-mentioned it should be noted that vehicle-mounted dedicated DC-DC power module described in the utility model, it includes successively connect
The control circuit of reverse-connection preventing circuit, power switch circuit and the current rectifying and wave filtering circuit and driving power switching circuit that connect；Wherein
Reverse-connection preventing circuit is connected with external circuit, and the output end of current rectifying and wave filtering circuit is connected with external loading；Wherein control circuit, power
Switching circuit and current rectifying and wave filtering circuit are the common modules for belonging to DC-DC power module, are no longer repeated herein.
Further, to above-mentioned it should be noted that the input terminal of external voltage regulator circuit connection is connected with external power supply, outside
Portion's voltage regulator circuit adjusts the voltage for being input to vehicle-mounted dedicated DC-DC power module, makes to be input to vehicle-mounted dedicated DC-DC power module
Voltage keep stablize；Turning circuit is just being connect by controlling whether power switch circuit is connected, to control vehicle-mounted dedicated DC-DC electricity
Whether source module is connected；External power supply is after the processing of external voltage regulator circuit, when by just connecing turning circuit, when vehicle-mounted dedicated
DC-DC power module input is rectified when connecing, and turning circuit conducting, vehicle-mounted dedicated DC-DC power module circuit conducting are just being connect；When
When the input terminal reversal connection of vehicle-mounted dedicated DC-DC power module, just connecing turning circuit cannot be connected, vehicle-mounted dedicated DC-DC electricity
Source module circuit is not turned on.
Further, as shown in figures 1 and 3, the turning circuit that just connects includes one-way conduction element.
To above-mentioned it should be noted that one-way conduction element can be the diode of one-way conduction, MOS pipe etc., electric current is only
Cathode can be flowed to from anode.
Further, as shown in Fig. 2, the turning circuit that just connects further includes bleeder circuit and internal voltage regulator circuit；Institute
The bleeder circuit stated is connected between one-way conduction element and external voltage regulator circuit；Internal voltage regulator circuit is connected to one-way conduction member
On part and for keeping the voltage stabilization on one-way conduction element.
To above-mentioned it should be noted that breakover element generally used is all to voltage and current than more sensitive electronics member
Part, thus need that voltage and current of the load on breakover element is kept to keep stablizing, while loading the electricity on breakover element
Pressure and electric current can't be too big；Thus to bleeder circuit is arranged on breakover element, avoid loading the electricity on one-way conduction element
When pressing through high, one-way conduction element is damaged, and influences the normal use of vehicle-mounted dedicated DC-DC power module.In addition because it is outer
Portion's voltage regulator circuit is the input voltage of external power supply to be adjusted, and the voltage of external power supply is relatively high, outer power voltage
Undulating value it is relatively large, although voltage is relatively stable under the adjusting of external voltage regulator circuit, not can avoid input still
It fluctuates the part of power module voltage.Therefore, it keeps stablizing to make to load the voltage on breakover element, on turning circuit
Connect internal voltage regulator circuit.
Further, as shown in figure 3, one-way conduction element uses metal-oxide-semiconductor Q1, the grounded drain of metal-oxide-semiconductor Q1.Preferably,
Metal-oxide-semiconductor Q1 uses the N-type metal-oxide-semiconductor of body diode.
To above-mentioned it should be noted that the purpose that metal-oxide-semiconductor Q1 uses the N-type metal-oxide-semiconductor of body diode is to prevent load in MOS
Overtension when voltage on pipe Q1 fluctuates burns out MOS pipe Q1, because before overtension metal-oxide-semiconductor is damaged,
It is connected on MOS parasitic diode between source electrode and drain electrode and is reversed breakdown first, high current is importing directly into ground, to protect
Metal-oxide-semiconductor is protected.
Further, as shown in figure 3, bleeder circuit includes resistance R5 and resistance R10, one end and outside of resistance R5 is steady
The output end of volt circuit connects, and the other end of resistance R5 is connected with the grid of metal-oxide-semiconductor Q1；The other end of resistance R5 also with resistance
One end of R10 connects, and the other end of resistance R10 is connect with the source electrode of metal-oxide-semiconductor Q1.
Further, as shown in figure 3, internal voltage regulator circuit includes capacitor C4 and zener diode Z1, the both ends of capacitor C4
It is connect respectively with the both ends of resistance R10；The cathode of zener diode Z1 is connect with one end of resistance R10, zener diode Z1's
Anode is connect with the other end of resistance R10.
Further, as shown in figure 3, external voltage regulator circuit includes capacitor C1, capacitor C1 is connected to zener diode Z1's
Between anode and external power input.
Further, as shown in figure 3, external voltage regulator circuit further includes capacitor C2 and capacitor C3, capacitor C2 and capacitor C3 divide
It is not connected between the anode and external power input of zener diode Z1.
Further, a kind of vehicle-mounted dedicated DC-DC power module, including counnter attack connection control circuit, the anti-reverse control
The output end of circuit processed is connected with power switch circuit input terminal.
To above-mentioned it should be noted that as shown in figure 4, the power switch circuit of vehicle-mounted dedicated DC-DC power module includes
Capacitor C5, diode D4, transformer T1, metal-oxide-semiconductor Q2, resistance R14, resistance R15, resistance R16, resistance R17 and resistance R18, electricity
The one end for holding C15 is connected with the output end of counnter attack connection control circuit, the VIN network label in specific Fig. 4 and the VIN in Fig. 3
The connection of network label, the both ends parallel resistance R14 of capacitor C15；The output end connection of counnter attack connection control circuit is gone back and transformer T1
One end connection, the anode connection of the other end of transformer T1 and diode D4；The other end of capacitor C15 and bearing for diode D4
Pole connection；The other end of transformer T1 is also connected with the drain electrode of metal-oxide-semiconductor Q2, the grid of metal-oxide-semiconductor Q2 one end with resistance R15 respectively
It is connected with one end of resistance R16, the other end of resistance R15 connects the master control with control circuit respectively with the other end of resistance R16
Chip U2 connection, the OUT1 network label in specific Fig. 4 are connected with the OUT1 network label in Fig. 5, the CS1 network in Fig. 4
Label is connected with the CS1 network label in Fig. 5；The source electrode of metal-oxide-semiconductor Q2 one end with one end of resistance R17 and resistance R18 respectively
Connection, one end of resistance R17 are also connected with the other end of resistance R16, and the other end of resistance R17 and the other end of resistance R18 connect
It connects, the other end of resistance R18 is also grounded.The ground terminal of resistance R18 is connect with the ground terminal of counnter attack connection control circuit, specific to scheme
GND network label in 3 is connected with the ground terminal of resistance R18 in Fig. 4.
As shown in figure 4, the output filter circuit of vehicle-mounted dedicated DC-DC power module includes resistance R13, diode D3, electricity
Hold C14, capacitor C16, capacitor C17, capacitor C18, capacitor C19, capacitor C20, capacitor C21, capacitor C23, inductance L2 and inductance L3；
Power switch circuit connect with output filter circuit by transformer T1, one end of transformer respectively with the positive of diode D3 and
One end of resistance R13 connects, and the other end of resistance R13 is connected with one end of capacitor C14, the other end and diode of capacitor C14
The cathode of D3 connects；The cathode of diode D3 is successively connect with inductance L2 and inductance L3；Capacitor C16, capacitor C17, capacitor C18,
Capacitor C19, capacitor C20, capacitor C21, capacitor C23 be connected to diode D3 cathode and transformer T1 the other end it
Between.
As shown in figure 5, the control circuit of vehicle-mounted dedicated DC-DC power module includes the master control of model LM5020MM-1
Chip U2, and around the peripheral circuit of main control chip U2, connect by network label OUT1 and CS1 with power switch circuit.
The above embodiments are merely examples for clarifying the description, and does not limit the embodiments.For institute
For the those of ordinary skill in category field, other various forms of variations or change can also be made on the basis of the above description
It is dynamic.There is no necessity and possibility to exhaust all the enbodiments.And obvious variation extended from this or change
It moves among still in the protection scope of the utility model.
Claims (10)
1. a kind of counnter attack connection control circuit and vehicle-mounted dedicated DC-DC power module, which is characterized in that including external voltage regulator circuit and
Turning circuit is just connect, the external voltage regulator circuit, which is connected to, just to be connect between turning circuit and the input terminal of external power supply, is just connect
The output end of turning circuit connects the power switch circuit input terminal of vehicle-mounted dedicated DC-DC power module.
2. a kind of counnter attack connection control circuit according to claim 1 and vehicle-mounted dedicated DC-DC power module, feature exist
In the turning circuit that just connects includes one-way conduction element.
3. a kind of counnter attack connection control circuit according to claim 2 and vehicle-mounted dedicated DC-DC power module, feature exist
In the turning circuit that just connects further includes bleeder circuit and internal voltage regulator circuit；The bleeder circuit, which is connected to, unidirectionally leads
Between logical element and external voltage regulator circuit；Internal voltage regulator circuit is connected on one-way conduction element and for keeping one-way conduction first
Voltage stabilization on part.
4. a kind of counnter attack connection control circuit according to claim 3 and vehicle-mounted dedicated DC-DC power module, feature exist
In the one-way conduction element uses metal-oxide-semiconductor Q1, the grounded drain of metal-oxide-semiconductor Q1.
5. a kind of counnter attack connection control circuit according to claim 3 and vehicle-mounted dedicated DC-DC power module, feature exist
In, the bleeder circuit includes resistance R5 and resistance R10, and one end of resistance R5 is connected with the output end of external voltage regulator circuit,
The other end of resistance R5 is connected with the grid of metal-oxide-semiconductor Q1；The other end of resistance R5 is also connect with one end of resistance R10, resistance R10
The other end connect with the source electrode of metal-oxide-semiconductor Q1.
6. a kind of counnter attack connection control circuit according to claim 3 and vehicle-mounted dedicated DC-DC power module, feature exist
In, the inside voltage regulator circuit include capacitor C4 and zener diode Z1, the both ends of capacitor C4 both ends with resistance R10 respectively
Connection；The cathode of zener diode Z1 is connect with one end of resistance R10, and zener diode Z1's is positive another with resistance R10
End connection.
7. a kind of counnter attack connection control circuit according to claim 1 and vehicle-mounted dedicated DC-DC power module, feature exist
In the external voltage regulator circuit includes capacitor C1, and capacitor C1 is connected to anode and the external power supply input of zener diode Z1
Between end.
8. a kind of counnter attack connection control circuit according to claim 7 and vehicle-mounted dedicated DC-DC power module, feature exist
In the external voltage regulator circuit further includes capacitor C2 and capacitor C3, and capacitor C2 and capacitor C3 are connected to zener diode
Between the anode and external power input of Z1.
9. a kind of counnter attack connection control circuit according to claim 4 and vehicle-mounted dedicated DC-DC power module, feature exist
In the metal-oxide-semiconductor Q1 uses the N-type metal-oxide-semiconductor of body diode.
10. a kind of vehicle-mounted dedicated DC-DC power module, which is characterized in that including the electricity of anti-reverse control described in claim 1-9
The one end on road, the capacitor C15 of the output end and power switch circuit of the counnter attack connection control circuit connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821526437.9U CN209056929U (en) | 2018-09-18 | 2018-09-18 | A kind of counnter attack connection control circuit and vehicle-mounted dedicated DC-DC power module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821526437.9U CN209056929U (en) | 2018-09-18 | 2018-09-18 | A kind of counnter attack connection control circuit and vehicle-mounted dedicated DC-DC power module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209056929U true CN209056929U (en) | 2019-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821526437.9U Active CN209056929U (en) | 2018-09-18 | 2018-09-18 | A kind of counnter attack connection control circuit and vehicle-mounted dedicated DC-DC power module |
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| Country | Link |
|---|---|
| CN (1) | CN209056929U (en) |
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2018
- 2018-09-18 CN CN201821526437.9U patent/CN209056929U/en active Active
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| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 710021 5th floor, building D3, huajinyuan Pioneer Park, caotan 6th Road, economic development zone, Xi'an City, Shaanxi Province Patentee after: Shaanxi Zerui Microelectronics Co.,Ltd. Address before: 5th Floor, Building D3, Huijinyuan Pioneer Park, Caotan 6th Road, Economic Development Zone, Xi'an City, Shaanxi Province 710000 Patentee before: SHAANXI ZERUI MICROELECTRONICS Co.,Ltd. |