CN207442703U - A kind of circuit and accessory power supply of the cross regulation rate for improving accessory power supply - Google Patents
A kind of circuit and accessory power supply of the cross regulation rate for improving accessory power supply Download PDFInfo
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- CN207442703U CN207442703U CN201721685051.8U CN201721685051U CN207442703U CN 207442703 U CN207442703 U CN 207442703U CN 201721685051 U CN201721685051 U CN 201721685051U CN 207442703 U CN207442703 U CN 207442703U
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- bypass
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- accessory power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model discloses a kind of circuits and accessory power supply of the cross regulation rate for improving accessory power supply, accessory power supply includes primary and secondary side, secondary includes main road and bypass, the circuit includes the stable-pressure device of the output plus terminal connection of output plus terminal connection, anode and the bypass of cathode and main road, for the output voltage of the bypass within a preset range when end, bypass output voltage be less than preset range lower limiting value when turn on.Bypass output voltage within a preset range when, what stable-pressure device was off, do not increase stand-by power consumption, do not influence complete machine work efficiency.When the output voltage of bypass drops to the lower limiting value of preset range, stable-pressure device turns on, bypass is exported to main road, so that accessory power supply quickly adjusts the driving duty cycle of the switching tube in primary circuit according to the Voltage Feedback of main road, realize the stabilization of bypass output voltage, the cross regulation rate and reliability of accessory power supply are improved, and then improves the reliability of complete machine work.
Description
Technical field
The utility model is related to power technique fields, more particularly to a kind of electricity for the cross regulation rate for improving accessory power supply
Road and accessory power supply.
Background technology
The power supplys such as existing charging electromechanical source, electric supply, communication power supply are in order to meet multiple devices or circuit to difference
The demand of supply voltage, accessory power supply can use Multiple coil output power supply plan as shown in Figure 1, specifically, accessory power supply
Secondary circuit includes main road and multiple bypasses, and main road is commonly used in being the power supplies such as driving circuit, and bypass is commonly used in as sampling electricity
Road, the power supplies such as I/O port of controller, wherein, main road is feedback circuit, and accessory power supply adjusts original according to the output voltage of main road
The driving duty cycle of switching tube in the circuit of side, and then adjust the output voltage on each road of accessory power supply.Since accessory power supply is more
Road exports, and can cause other roads or output itself unstable when either bypass works in dynamic load to main road, reduce auxiliary
Help the cross regulation rate of power supply, and accessory power supply work is unreliable will and then cause complete machine work unreliable.
Therefore, how to provide a kind of scheme for solving above-mentioned technical problem is that those skilled in the art need to solve at present
Problem.
Utility model content
The purpose of this utility model is to provide a kind of circuit and accessory power supply of the cross regulation rate for improving accessory power supply,
On the basis of low-power consumption, the stabilization of bypass output voltage is realized, improves the cross regulation rate and reliability of accessory power supply, into
And improve the reliability of complete machine work.
In order to solve the above technical problems, the utility model provides a kind of electricity for the cross regulation rate for improving accessory power supply
Road, the accessory power supply include primary and secondary side, and the secondary includes main road and bypass, including：
The stable-pressure device that cathode is connected with the output plus terminal of the main road, anode is connected with the output plus terminal of the bypass,
For the output voltage of the bypass within a preset range when end, the bypass output voltage be less than the default model
It is turned on during the lower limiting value enclosed.
Preferably, the circuit further includes：
The bleeder mechanism connected with the stable-pressure device.
Preferably, the bleeder mechanism is resistance.
Preferably, the circuit further includes：
First end is connected with the output plus terminal in place circuit, the first filter of the output negative terminal connection in second end and place circuit
Ripple module, wherein, place circuit is the main road or the bypass.
Preferably, in bypass, the circuit further includes：
The input terminal of linear voltage regulator LDO, LDO respectively with the first end of first filter module, place bypass it is defeated
Go out the cathode connection of anode and the stable-pressure device, the output terminal of bypass where the output terminal of LDO is used as, the ground terminal of LDO and
The output negative terminal connection of place circuit, common end grounding.
Preferably, the circuit further includes：
First end is connected respectively with the input terminal of the output plus terminal of place bypass and LDO, second end and place bypass it is defeated
Go out the second filter module of negative terminal connection.
Preferably, first filter module and/or second filter module are capacitance.
Preferably, the stable-pressure device is zener diode, wherein, the anode of the zener diode is as the voltage stabilizing
The anode of device, the cathode of the cathode of the zener diode as the stable-pressure device.
In order to solve the above technical problems, the utility model additionally provides a kind of accessory power supply, including primary circuit and secondary
Circuit, wherein, the secondary circuit includes main road and bypass, further includes the intersection adjustment of raising accessory power supply as described above
The circuit of rate.
Preferably, the secondary circuit is connected whole including vice-side winding and input terminal with the output terminal of the vice-side winding
Flow module, the output terminal of the output terminal of the rectification module as the secondary circuit.
The utility model provides a kind of circuit and accessory power supply of the cross regulation rate for improving accessory power supply, accessory power supply
Including primary and secondary side, secondary includes main road and bypass, the circuit include the output plus terminal connection of cathode and main road, anode with it is auxiliary
Road output plus terminal connection stable-pressure device, for the output voltage of the bypass within a preset range when end, in bypass
Output voltage be less than preset range lower limiting value when turn on.
As it can be seen that bypass output voltage within a preset range when, at this time stable-pressure device be off namely at this time
It does not work, does not increase stand-by power consumption, do not influence complete machine work efficiency.The lower limit of preset range is dropped in the output voltage of bypass
During value, stable-pressure device conducting, bypass is exported to main road so that accessory power supply according to the Voltage Feedback of main road come quickly
The driving duty cycle of the switching tube in primary circuit is adjusted, the stabilization of bypass output voltage is realized, improves accessory power supply
Cross regulation rate and reliability, and then improve the reliability of complete machine work.
Description of the drawings
It, below will be to the prior art and embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments, for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is a kind of structure diagram of accessory power supply of the prior art；
Fig. 2 is a kind of structure diagram of the circuit of cross regulation rate for improving accessory power supply provided by the utility model；
Fig. 3 is the structural representation of the circuit of another cross regulation rate for improving accessory power supply provided by the utility model
Figure.
Specific embodiment
The core of the utility model is to provide a kind of circuit and accessory power supply of the cross regulation rate for improving accessory power supply,
On the basis of low-power consumption, the stabilization of bypass output voltage is realized, improves the cross regulation rate and reliability of accessory power supply, into
And improve the reliability of complete machine work.
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, those of ordinary skill in the art's all other embodiments obtained without making creative work, belongs to
The scope of the utility model protection.
Fig. 2 is refer to, Fig. 2 is a kind of knot of the circuit of cross regulation rate for improving accessory power supply provided by the utility model
Structure schematic diagram, accessory power supply include primary and secondary side, and secondary includes main road and bypass, which includes：
The stable-pressure device 1 of the output plus terminal connection of the connection of the output plus terminal of cathode and main road, anode and bypass, for auxiliary
The output voltage on road within a preset range when end, bypass output voltage be less than preset range lower limiting value when turn on.
Firstly the need of explanation, the accessory power supply mentioned in the application can with but be not only limited to flyback power supply, may be used also
To be the forward power of multi output, the application is not particularly limited herein.
Specifically, the operation principle of accessory power supply is：During the work time, accessory power supply judges the output electricity of main road feedback
Whether pressure meets the requirements, if be unsatisfactory for requiring, by the way that the driving duty cycle of switching tube of primary side is controlled to change primary side
Voltage, and then change the voltage of secondary so that the output voltage of main road is met the requirements.
In view of bypass output voltage fluctuate when, will influence bypass power supply device or circuit, and if cannot and
When solve the problems, such as that bypass fluctuates, the voltage output of main road or other bypasses will be also influenced, so that entire auxiliary electricity
The cross regulation rate in source is larger, reduces the functional reliability of accessory power supply.
Based on this, the application is also provided between main road and each bypass for steady in bypass normal output voltage
The stable-pressure device 1 of voltage coupling is carried out when pressure, output voltage are lower than the lower limiting value of preset range, due to working as the output voltage of main road
During fluctuation accessory power supply can adjust automatically, therefore, the output voltage for only considering main road here is normal and the output voltage ripple of bypass
Dynamic situation, when bypass output voltage preset range (namely normal work when rated voltage in the range of) it is interior when, this
When stable-pressure device 1 it is being off namely stable-pressure device 1 is idle at this time, therefore stand-by power consumption will not be increased, will not shadow
Ring the work efficiency of complete machine.When the output voltage of bypass is less than lower limiting value in preset range, 1 both ends of stable-pressure device at this time
Voltage difference is more than the voltage stabilizing value of stable-pressure device 1, therefore stable-pressure device 1 turns on, and the output voltage of bypass is coupled to by stable-pressure device 1
On main road, accessory power supply can be controlled in accessory power supply primary circuit in time when judging to obtain the output voltage fluctuation of main road
The driving duty cycle of switching tube so as to indirectly to adjust the voltage of secondary circuit by adjusting the voltage of primary circuit, is realized
The stabilization of the main road of secondary and the output voltage of bypass improves the cross regulation rate and reliability of accessory power supply, and then improves
The reliability of complete machine work.
In conclusion the application bypass output voltage within a preset range when, stable-pressure device 1 is off at this time
Namely do not work at this time, do not increase stand-by power consumption, do not influence complete machine work efficiency.It is dropped in the output voltage of bypass pre-
If during the lower limiting value of scope, stable-pressure device 1 turns on, and bypass is exported to main road, so that accessory power supply is according to main road
Voltage Feedback carrys out the quick driving duty cycle for adjusting the switching tube in primary circuit, realizes the stabilization of bypass output voltage, carries
The high cross regulation rate and reliability of accessory power supply, and then improve the reliability of complete machine work.
Fig. 3 is refer to, Fig. 3 is the circuit of another cross regulation rate for improving accessory power supply provided by the utility model
Structure diagram, on the basis of above-described embodiment：
As a kind of preferred embodiment, circuit further includes：
The bleeder mechanism connected with stable-pressure device 1.
As a kind of preferred embodiment, bleeder mechanism is resistance.
Specifically, in order to improve the safety and reliability of the circuit, which is also provided with what is connected with stable-pressure device 1
Bleeder mechanism also achieves the function of current limliting.Here bleeder mechanism can with but be not only limited to resistance (correspond to Fig. 3 in R1,
R2 and R3), resistance has the advantages that strong antijamming capability and at low cost.Certainly, which kind of bleeder mechanism sheet is the application specifically select
Application is not particularly limited herein, is determined according to actual conditions.
As a kind of preferred embodiment, circuit further includes：
First end is connected with the output plus terminal in place circuit, the first filter of the output negative terminal connection in second end and place circuit
Ripple module, wherein, place circuit is main road or bypass.
Specifically, which is also provided with the first filter module in the output terminal of main road and each bypass and (corresponds in Fig. 3
C1, C2, C3 and C4), filtered out so as to fulfill by the clutter in the output voltage in place circuit, for the device subsequently powered or
Person's circuit provides the power supply of high quality.
As a kind of preferred embodiment, in bypass, circuit further includes：
The input terminal of linear voltage regulator LDO, LDO respectively with the first end of the first filter module, place bypass output just
The connection of the cathode of end and stable-pressure device 1, the output terminal of output terminal bypass as where of LDO, ground terminal and the place circuit of LDO
Output negative terminal connection, common end grounding.
The influence generated when connecing dynamic load in view of clutter and main road or other bypasses, in each bypass, first
Before filter module, which is also provided with LDO (low dropout regulator, linear voltage regulator) and (corresponds in Fig. 3
U1, U2 and U3), by the output voltage voltage stabilizing of place bypass in default rated range, bypass where further improving
Power quality.
As a kind of preferred embodiment, circuit further includes：
First end is connected respectively with the input terminal of the output plus terminal of place bypass and LDO, second end and place bypass it is defeated
Go out the second filter module of negative terminal connection.
In order to further improve power quality, the application is also provided with the second filter module in the input terminal of LDO, so as to
It realizes that first passing through the second filter module to the output voltage that will enter LDO is filtered, has filtered after ripple again through LDO voltage stabilizings,
Then the output voltage after voltage stabilizing is filtered again by the first filter module, and then obtained more pure, high quality straight
Output voltage is flowed, meets the demand of circuit or device.
As a kind of preferred embodiment, the first filter module and/or the second filter module are capacitance.
Specifically, capacitance (C5, C6 and C7 for corresponding in Fig. 3) has the advantages that simple in structure and filtering performance is good, when
So, here the first filter module and/or the second filter module can not be done herein with other kinds of filter module, the application
It is special to limit.
As a kind of preferred embodiment, stable-pressure device 1 is zener diode, wherein, the anode conduct of zener diode
The anode of stable-pressure device 1, the cathode of the cathode of zener diode as stable-pressure device 1.
Specifically, the voltage regulation result of zener diode (corresponding to Z1, Z2 and Z3 in Fig. 3) is very good, with the master in Fig. 3
Zener diode Z1 between road and first bypass below illustrates, since the output voltage of main road is 14, bypass it is defeated
Go out voltage for 5V, therefore the zener diode that voltage stabilizing value is 9V can be selected, then when the output voltage of main road and bypass voltage all
When normal, the both end voltage of zener diode is in critical breakdown point, when the output voltage of place bypass declines, voltage stabilizing two at this time
The voltage difference at pole pipe both ends is more than its voltage stabilizing value 9V, then zener diode is reversed breakdown at this time, then flows through zener diode
Electric current it is very big, zener diode by the voltage of the bypass coupled to main road, so as to pass through the feedback of the output voltage of main road come
Realize the adjustment of bypass voltage.
As it can be seen that the application between main road and bypass by setting zener diode and resistance, it is few and low in added device
On the basis of power consumption, the stabilization of bypass output voltage is realized, improves the cross regulation rate and reliability of accessory power supply, and then
Improve the reliability of complete machine work.
In order to solve the above technical problems, the utility model additionally provides a kind of accessory power supply, including primary circuit and secondary
Circuit, wherein, secondary circuit includes main road and bypass, further includes the electricity of the cross regulation rate described above for improving accessory power supply
Road.
Above-described embodiment is refer to for the introduction of the accessory power supply of the application offer, details are not described herein by the application.
As a kind of preferred embodiment, secondary circuit includes vice-side winding and the output terminal of input terminal and vice-side winding connects
The rectification module connect, the output terminal of the output terminal of rectification module as secondary circuit.
Specifically, rectification module here can be rectifier diode as shown in Figure 3 (correspond to Fig. 3 in D1,
D2, D3 and D4), it is of course also possible to be other kinds of rectification module, details are not described herein by the application.
It should be noted that in the present specification, relational terms such as first and second and the like are used merely to one
A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it
Between there are any actual relationship or orders.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Cover non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only include those
Element, but also including other elements that are not explicitly listed or further include as this process, method, article or set
Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
Also there are other identical elements in the process, method, article or apparatus that includes the element.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications of these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (10)
1. a kind of circuit for the cross regulation rate for improving accessory power supply, the accessory power supply include primary and secondary side, the secondary
Including main road and bypass, which is characterized in that including：
The stable-pressure device that cathode is connected with the output plus terminal of the main road, anode is connected with the output plus terminal of the bypass, is used for
The bypass output voltage within a preset range when end, be less than the preset range in the output voltage of the bypass
It is turned on during lower limiting value.
2. circuit as described in claim 1, which is characterized in that the circuit further includes：
The bleeder mechanism connected with the stable-pressure device.
3. circuit as claimed in claim 2, which is characterized in that the bleeder mechanism is resistance.
4. circuit as claimed in claim 2, which is characterized in that the circuit further includes：
First end is connected with the output plus terminal in place circuit, the first filtering mould of the output negative terminal connection in second end and place circuit
Block, wherein, place circuit is the main road or the bypass.
5. circuit as claimed in claim 4, which is characterized in that in bypass, the circuit further includes：
The input terminal of linear voltage regulator LDO, LDO respectively with the first end of first filter module, place bypass output just
The connection of the cathode of end and the stable-pressure device, the output terminal of output terminal bypass as where of LDO, the ground terminal of LDO and place
The output negative terminal connection of circuit, common end grounding.
6. circuit as claimed in claim 5, which is characterized in that the circuit further includes：
First end is connected respectively with the input terminal of the output plus terminal of place bypass and LDO, the output of second end and place bypass is born
Hold the second filter module of connection.
7. circuit as claimed in claim 6, which is characterized in that first filter module and/or second filter module
It is capacitance.
8. such as claim 1-7 any one of them circuits, which is characterized in that the stable-pressure device is zener diode, wherein,
Anode of the anode of the zener diode as the stable-pressure device, the cathode of the zener diode are filled as the voltage stabilizing
The cathode put.
9. a kind of accessory power supply, which is characterized in that including primary circuit and secondary circuit, wherein, the secondary circuit includes master
Road and bypass further include claim 1-8 any one of them such as and improve the circuit of the cross regulation rate of accessory power supply.
10. accessory power supply as claimed in claim 9, which is characterized in that the secondary circuit includes vice-side winding and input terminal
The rectification module being connected with the output terminal of the vice-side winding, the output terminal of the rectification module is as the defeated of the secondary circuit
Outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721685051.8U CN207442703U (en) | 2017-12-06 | 2017-12-06 | A kind of circuit and accessory power supply of the cross regulation rate for improving accessory power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721685051.8U CN207442703U (en) | 2017-12-06 | 2017-12-06 | A kind of circuit and accessory power supply of the cross regulation rate for improving accessory power supply |
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| Publication Number | Publication Date |
|---|---|
| CN207442703U true CN207442703U (en) | 2018-06-01 |
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ID=62285801
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721685051.8U Active CN207442703U (en) | 2017-12-06 | 2017-12-06 | A kind of circuit and accessory power supply of the cross regulation rate for improving accessory power supply |
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| CN (1) | CN207442703U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113098300A (en) * | 2021-04-20 | 2021-07-09 | 江苏大学 | Three-way output auxiliary power supply for realizing current self-balance based on synchronous rectification and switching method thereof |
| CN113364296A (en) * | 2021-05-14 | 2021-09-07 | 长城电源技术有限公司 | Switching power supply circuit and power supply device |
-
2017
- 2017-12-06 CN CN201721685051.8U patent/CN207442703U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113098300A (en) * | 2021-04-20 | 2021-07-09 | 江苏大学 | Three-way output auxiliary power supply for realizing current self-balance based on synchronous rectification and switching method thereof |
| CN113098300B (en) * | 2021-04-20 | 2022-05-20 | 江苏大学 | Three-way output auxiliary power supply for realizing current self-balance based on synchronous rectification and switching method thereof |
| CN113364296A (en) * | 2021-05-14 | 2021-09-07 | 长城电源技术有限公司 | Switching power supply circuit and power supply device |
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| GR01 | Patent grant | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 518000 room 118, 1 Kang Hesheng building, 1 Chuang Sheng Road, Xili street, Nanshan District, Shenzhen, Guangdong. Patentee after: SHENZHEN KEHUA HENGSHENG TECHNOLOGY Co.,Ltd. Patentee after: XIAMEN KEHUAHENGSHENG LIMITED BY SHARE Ltd. Address before: 518000 room 118, 1 Kang Hesheng building, 1 Chuang Sheng Road, Xili street, Nanshan District, Shenzhen, Guangdong. Patentee before: SHENZHEN KEHUA HENGSHENG TECHNOLOGY Co.,Ltd. Patentee before: XIAMEN KEHUA HENGSHENG Co.,Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20210107 Address after: 518000 room 118, 1 Kang Hesheng building, 1 Chuang Sheng Road, Xili street, Nanshan District, Shenzhen, Guangdong. Patentee after: SHENZHEN KEHUA HENGSHENG TECHNOLOGY Co.,Ltd. Address before: 518000 room 118, 1 Kang Hesheng building, 1 Chuang Sheng Road, Xili street, Nanshan District, Shenzhen, Guangdong. Patentee before: SHENZHEN KEHUA HENGSHENG TECHNOLOGY Co.,Ltd. Patentee before: XIAMEN KEHUAHENGSHENG LIMITED BY SHARE Ltd. |