CN220368613U - Ultra-small-volume auxiliary power supply module circuit - Google Patents
Ultra-small-volume auxiliary power supply module circuit Download PDFInfo
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- CN220368613U CN220368613U CN202321997822.2U CN202321997822U CN220368613U CN 220368613 U CN220368613 U CN 220368613U CN 202321997822 U CN202321997822 U CN 202321997822U CN 220368613 U CN220368613 U CN 220368613U
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- 230000001629 suppression Effects 0.000 claims abstract description 27
- 230000001105 regulatory effect Effects 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims description 36
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000009123 feedback regulation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004807 localization Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
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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 relates to an ultra-small-volume auxiliary power supply module circuit, which comprises a rectifier bridge D4, a flyback topology circuit, a feedback regulating circuit, a primary peak suppression circuit, a secondary peak suppression circuit and an overvoltage clamping circuit, wherein the rectifier bridge D4 is connected with the flyback topology circuit; the single-phase alternating current is input from a rectifier bridge D4, and the output end of the rectifier bridge D4 is respectively connected with a flyback topology circuit and a primary peak suppression circuit, and the flyback topology circuit is connected with the primary peak suppression circuit, a feedback regulating circuit, a secondary peak suppression circuit and an overvoltage clamping circuit. The utility model has small volume, simple peripheral circuit, high reliability and high efficiency.
Description
Technical Field
The utility model relates to the technical field of power supplies, in particular to an ultra-small-size auxiliary power supply module circuit.
Background
With the trend of localization in large environments, more and more modules are currently produced in the whole localization of modules on the market, and under the condition that the functions of the whole power supply are more and more complex, a digital processing circuit must be introduced. Then an auxiliary power source is needed for all home-made applications. However, most domestic low-power high-voltage modules in the market at present have large total volume, and the size requirement of the whole power supply can not be met in many cases; and only direct current input is needed, and an additional rectifying circuit is needed for use, so that the method is very inconvenient. There are few small ac input auxiliary power modules. There are three main reasons: firstly, the circuit topology structure is complex, the components are more, and the volume miniaturization is difficult to realize; secondly, the voltage withstand problem of the transformer is that the whole volume of the power module is very small, the volume of the transformer is very limited, and the whole design of the transformer, the magnetic core material selection, the winding mode, the installation method and the like all need higher design and production requirements; because the installation of the transformer cannot leave enough safety distance, the voltage withstand test can be ensured only through a special, precise and ingenious transformer processing technology, but the technology is difficult to realize, and the yield of products is low; thirdly, all devices are domestic: the current power module design generally adopts foreign imported chips and power devices, the application of the imported chips is mature technology, obvious design defects do not exist, but domestic chips and power devices are started later, the application technology is not verified in a large quantity by markets and products, unpredictable technical risks exist, and the ideal product state can be obtained only through repeated experiments in various aspects such as design calculation, modeling simulation of a working model, actual testing, parameter correction and the like, and the whole process is long in time consumption.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, provides an ultra-small-size auxiliary power module circuit, and solves the problems of large size and complex structure of the existing power module circuit.
The aim of the utility model is achieved by the following technical scheme: an ultra-small-volume auxiliary power supply module circuit comprises a rectifier bridge D4, a flyback topology circuit, a feedback regulating circuit, a primary peak suppression circuit, a secondary peak suppression circuit and an overvoltage clamping circuit;
the single-phase alternating current is input from a rectifier bridge D4, and the output end of the rectifier bridge D4 is respectively connected with a flyback topology circuit and a primary peak suppression circuit, and the flyback topology circuit is connected with the primary peak suppression circuit, a feedback regulating circuit, a secondary peak suppression circuit and an overvoltage clamping circuit.
The flyback topology circuit comprises a main control chip U1, a transformer T1, a diode D1 and a capacitor C3; the 5 th pin and the 6 th pin of the main control chip U1 are connected with the 4 th pin of the primary side of the transformer T1, the secondary side of the transformer T1 is connected with the diode D1 and the capacitor C3, and the diode D1 and the capacitor C3 are connected in parallel;
the feedback regulating circuit is connected between the 1 st pin of the main control chip U1 and the 2 nd pin of the primary side of the transformer T1, the secondary peak suppressing circuit is connected with the diode D1 in parallel, the overvoltage clamping circuit is connected with the capacitor C3 in parallel, and the primary peak suppressing circuit is connected between the output end of the rectifier bridge D4 and the 5 th pin and the 6 th pin of the main control chip U1.
The feedback regulating circuit comprises resistors R4 and R5, wherein the resistors R4 and R5 are connected between a 1 st pin of the main control chip U1 and a 2 nd pin of the primary side of the transformer T1, and the resistors R4 and R5 are connected in parallel.
The primary peak suppression circuit comprises a diode D2, a capacitor C2, a resistor R3 and a resistor R6, wherein the resistor R3 is connected with the capacitor C2 in series, the resistor R6 is connected with the resistor R3 and the capacitor C2 in parallel and is connected with one end of the diode D2 in series, the other end of the diode D2 is connected between the output end of the rectifier bridge D4 and the 5 th pin and the 6 th pin of the main control chip U1, and the resistors R3 and R6 are connected with the output end of the rectifier bridge D4.
The secondary spike suppression circuit comprises a resistor R1 and a capacitor C1, wherein the resistor R1 is connected with the capacitor C1 in series and connected with a diode D1 in parallel.
The overvoltage clamping circuit comprises a resistor R2 and a diode D3, and the resistor R2 and the diode D3 are connected with a capacitor C3 in parallel.
The output end of the rectifier bridge D4 is also connected with a capacitor C4 and a surge current direct-current resistor R7 which are matched and rectified into high-voltage direct current.
The utility model has the following advantages: an ultra-small auxiliary power module circuit has the advantages of small size, simple peripheral circuit, high reliability and high efficiency.
Drawings
Fig. 1 is a circuit schematic of the present utility model.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Accordingly, the following detailed description of the embodiments of the present application, provided in connection with the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application. The utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1, the present utility model specifically relates to an ultra-small-volume auxiliary power module circuit, which comprises a rectifier bridge D4, a flyback topology circuit, a feedback regulation circuit, a primary peak suppression circuit, a secondary peak suppression circuit and an overvoltage clamping circuit; the output end of the rectifier bridge D4 is also connected with a capacitor C4 and a surge current direct-current resistor R7 which are matched and rectified into high-voltage direct current;
ACL and CAN are single-phase alternating current as power conversion input, and are input from a rectifier bridge D4, and the output end of the rectifier bridge D4 is respectively connected with a flyback topology circuit and a primary peak suppression circuit, and the flyback topology circuit is connected with the primary peak suppression circuit, a feedback regulating circuit, a secondary peak suppression circuit and an overvoltage clamping circuit.
Further, the flyback topology circuit comprises a main control chip U1, a transformer T1, a diode D1 and a capacitor C3; the 5 th pin and the 6 th pin of the main control chip U1 are connected with the 4 th pin of the primary side of the transformer T1, the secondary side of the transformer T1 is connected with the diode D1 and the capacitor C3, and the diode D1 and the capacitor C3 are connected in parallel; the main control chip U1 is responsible for generating working frequency, time sequence signals, collecting voltage and current signals fed back, carrying out logic processing on the signals and outputting control signals; the model of the main control chip U1 is LP3773CH.
The 3 rd pin and the 4 th pin of the main control chip U1 are connected with a grounding capacitor C5, the C5 is a bootstrap charging capacitor, and the power supply is provided for the main control chip U1 through bootstrap charging.
The feedback regulating circuit is connected between the 1 st pin of the main control chip U1 and the 2 nd pin of the primary side of the transformer T1, the secondary peak suppressing circuit is connected with the diode D1 in parallel, the overvoltage clamping circuit is connected with the capacitor C3 in parallel, and the primary peak suppressing circuit is connected between the output end of the rectifier bridge D4 and the 5 th pin and the 6 th pin of the main control chip U1.
Further, the feedback regulation circuit comprises resistors R4 and R5 for regulating output voltage, the resistors R4 and R5 are connected between the 1 st pin of the main control chip U1 and the 2 nd pin of the primary side of the transformer T1, and the resistors R4 and R5 are connected in parallel.
The primary peak suppression circuit comprises a diode D2, a capacitor C2, resistors R3 and R6, wherein the primary peak suppression circuit mainly suppresses high-voltage peaks generated during switching and protects a main control chip U1, the resistor R3 is connected with the capacitor C2 in series, the resistor R6 is connected with the resistor R3 and the capacitor C2 in parallel and is connected with one end of the diode D2 in series, the other end of the diode D2 is connected between the output end of a rectifier bridge D4 and pins 5 and 6 of the main control chip U1, and the resistors R3 and R6 are connected with the output end of the rectifier bridge D4.
The secondary peak suppression circuit comprises a resistor R1 and a capacitor C1, and is mainly used for suppressing high-voltage peaks generated during secondary and protecting a rectifier diode D1; the resistor R1 is connected in series with the capacitor C1 and in parallel with the diode D1.
The overvoltage clamping circuit comprises a resistor R2 and a diode D3, wherein the resistor R2 and the diode D3 are connected with a capacitor C3 in parallel, and the damage of a later-stage circuit caused by output overvoltage is mainly prevented.
The working process of the utility model is as follows: the energy is transmitted through the on and off of the main control chip U1 and the transformer T1, the output rectification is composed of a diode D1, the energy transmitted from the primary is transformed, the preset output voltage and power are output, and the energy is filtered and output to a load through the energy storage of the capacitor C3.
The foregoing is merely a preferred embodiment of the utility model, and it is to be understood that the utility model is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.
Claims (7)
1. An ultra-small-size auxiliary power module circuit is characterized in that: the device comprises a rectifier bridge D4, a flyback topology circuit, a feedback regulating circuit, a primary peak suppression circuit, a secondary peak suppression circuit and an overvoltage clamping circuit;
the single-phase alternating current is input from a rectifier bridge D4, and the output end of the rectifier bridge D4 is respectively connected with a flyback topology circuit and a primary peak suppression circuit, and the flyback topology circuit is connected with the primary peak suppression circuit, a feedback regulating circuit, a secondary peak suppression circuit and an overvoltage clamping circuit.
2. The ultra-small-sized auxiliary power module circuit as claimed in claim 1, wherein: the flyback topology circuit comprises a main control chip U1, a transformer T1, a diode D1 and a capacitor C3; the 5 th pin and the 6 th pin of the main control chip U1 are connected with the 4 th pin of the primary side of the transformer T1, the secondary side of the transformer T1 is connected with the diode D1 and the capacitor C3, and the diode D1 and the capacitor C3 are connected in parallel;
the feedback regulating circuit is connected between the 1 st pin of the main control chip U1 and the 2 nd pin of the primary side of the transformer T1, the secondary peak suppressing circuit is connected with the diode D1 in parallel, the overvoltage clamping circuit is connected with the capacitor C3 in parallel, and the primary peak suppressing circuit is connected between the output end of the rectifier bridge D4 and the 5 th pin and the 6 th pin of the main control chip U1.
3. An ultra-small-volume auxiliary power module circuit as claimed in claim 2, wherein: the feedback regulating circuit comprises resistors R4 and R5, wherein the resistors R4 and R5 are connected between a 1 st pin of the main control chip U1 and a 2 nd pin of the primary side of the transformer T1, and the resistors R4 and R5 are connected in parallel.
4. An ultra-small-volume auxiliary power module circuit as claimed in claim 2, wherein: the primary peak suppression circuit comprises a diode D2, a capacitor C2, a resistor R3 and a resistor R6, wherein the resistor R3 is connected with the capacitor C2 in series, the resistor R6 is connected with the resistor R3 and the capacitor C2 in parallel and is connected with one end of the diode D2 in series, the other end of the diode D2 is connected between the output end of the rectifier bridge D4 and the 5 th pin and the 6 th pin of the main control chip U1, and the resistors R3 and R6 are connected with the output end of the rectifier bridge D4.
5. An ultra-small-volume auxiliary power module circuit as claimed in claim 2, wherein: the secondary spike suppression circuit comprises a resistor R1 and a capacitor C1, wherein the resistor R1 is connected with the capacitor C1 in series and connected with a diode D1 in parallel.
6. An ultra-small-volume auxiliary power module circuit as claimed in claim 2, wherein: the overvoltage clamping circuit comprises a resistor R2 and a diode D3, and the resistor R2 and the diode D3 are connected with a capacitor C3 in parallel.
7. An ultra-small-volume auxiliary power module circuit as claimed in claim 2, wherein: the output end of the rectifier bridge D4 is also connected with a capacitor C4 and a surge current direct-current resistor R7 which are matched and rectified into high-voltage direct current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321997822.2U CN220368613U (en) | 2023-07-27 | 2023-07-27 | Ultra-small-volume auxiliary power supply module circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321997822.2U CN220368613U (en) | 2023-07-27 | 2023-07-27 | Ultra-small-volume auxiliary power supply module circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220368613U true CN220368613U (en) | 2024-01-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321997822.2U Active CN220368613U (en) | 2023-07-27 | 2023-07-27 | Ultra-small-volume auxiliary power supply module circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220368613U (en) |
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2023
- 2023-07-27 CN CN202321997822.2U patent/CN220368613U/en active Active
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