CN211015188U - Output series voltage regulating circuit - Google Patents
Output series voltage regulating circuit Download PDFInfo
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- CN211015188U CN211015188U CN202020111257.5U CN202020111257U CN211015188U CN 211015188 U CN211015188 U CN 211015188U CN 202020111257 U CN202020111257 U CN 202020111257U CN 211015188 U CN211015188 U CN 211015188U
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Abstract
The application provides an output series voltage regulating circuit, which comprises a potentiometer connected with a reference voltage end; the signal generator is connected with the potentiometer; the signal isolator is connected with the signal generator; a first filter connected to the signal isolator; a first voltage follower connected to the first filter; the first voltage regulating end is connected with the first voltage follower; a second filter connected to the signal isolator; a second voltage follower connected to the second filter; the second voltage regulating end is connected with the first voltage follower; the signal generator can output a signal with a specific duty ratio waveform by adjusting the potentiometer on the secondary side, then the signal is processed by the signal isolator, alternating current is filtered into direct current by the two filters, and finally the direct current is connected to the corresponding voltage regulating end by the follower corresponding to each filter; thereby realizing dynamic synchronous real-time voltage regulation.
Description
Technical Field
The application relates to the technical field of switching power supplies, in particular to an output series voltage regulating circuit.
Background
When the switching power supply module is applied, when the output voltage of the single module is not high enough and cannot meet the working requirement, the output voltage can be raised in an output series connection mode, and the use requirement is met. However, when the output voltage is applied in series, it is often complicated to adjust the output voltage.
SUMMERY OF THE UTILITY MODEL
An object of the application is to provide an output series voltage regulating circuit for realizing the technical effect of conveniently and rapidly regulating the output voltage of a switching power supply.
The application provides an output series voltage regulating circuit, which comprises a potentiometer connected with a reference voltage end; the signal generator is connected with the potentiometer; the signal isolator is connected with the signal generator; a first filter connected to the signal isolator; a first voltage follower connected to the first filter; the first voltage regulating end is connected with the first voltage follower; a second filter connected to the signal isolator; a second voltage follower connected to the second filter; and the second voltage regulating end is connected with the first voltage follower.
Further, the signal isolator is a signal isolation chip.
Further, the first filter comprises a first resistor, a second resistor, a third resistor and a first capacitor; the first end of the first resistor is connected with the high-end output end of the signal isolation chip; the first end of the second resistor is connected with the second end of the first resistor, and the second end of the second resistor is connected with the floating ground pin of the signal isolation chip; the first end of the third resistor is connected with the second end of the first resistor; the first end of the first capacitor is connected with the second end of the third resistor; and the second end of the first capacitor is connected with a floating ground pin of the signal isolation chip.
Further, the positive electrode of the first voltage follower is connected with the second end of the third resistor; the negative electrode of the first voltage follower is connected with the output end of the first voltage follower; the grounding end of the first voltage follower is connected with the floating ground pin of the signal isolation chip; and the power supply voltage end of the first voltage follower is connected with a first power supply.
Further, the second filter comprises a fourth resistor, a fifth resistor, a sixth resistor and a second capacitor; the first end of the fourth resistor is connected with the low-end output end of the signal isolation chip; the first end of the fifth resistor is connected with the second end of the fourth resistor, and the second end of the fifth resistor is connected with the floating ground pin of the signal isolation chip; the first end of the sixth resistor is connected with the second end of the fourth resistor; the first end of the second capacitor is connected with the second end of the sixth resistor; and the second end of the second capacitor is connected with the floating ground pin of the signal isolation chip.
Further, the positive electrode of the second voltage follower is connected with the second end of the sixth resistor; the negative electrode of the second voltage follower is connected with the output end of the second voltage follower; the grounding end of the second voltage follower is connected with the floating ground pin of the signal isolation chip; and the power supply voltage end of the second voltage follower is connected with a second power supply.
The beneficial effect that this application can realize is: the signal generator can output a signal with a specific duty ratio waveform by adjusting the potentiometer on the secondary side, then the signal is processed by the signal isolator, alternating current is filtered into direct current by the two filters, and finally the direct current is connected to the corresponding voltage regulating end by the follower corresponding to each filter; thereby realizing dynamic synchronous real-time voltage regulation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic diagram of an output series voltage regulating circuit according to an embodiment of the present disclosure;
fig. 2 is an electrical connection schematic diagram of an output series voltage regulating circuit according to an embodiment of the present application.
Icon: 10-output series voltage regulating circuit; 100-a potentiometer; 200-a signal generator; 300-a signal isolator; 400-a first filter; 500-a first follower; 600-a second filter; 700-second follower.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic diagram of an output series voltage regulating circuit according to an embodiment of the present disclosure; fig. 2 is an electrical connection schematic diagram of an output series voltage regulating circuit according to an embodiment of the present application.
The output series voltage regulating circuit that this application embodiment provided includes: a potentiometer 100 connected to a reference voltage terminal; a signal generator 200 connected to the potentiometer 100; a signal isolator 300 connected with the signal generator 200; a first filter 400 connected to the signal isolator 300; a first voltage follower 500 connected to the first filter 400; a first voltage regulating terminal connected to the first voltage follower 500; a second filter 600 connected to the signal isolator 300; a second voltage follower 700 connected to the second filter 600; and a second voltage regulating terminal connected to the first voltage follower 700.
The signal isolator can be a signal isolation chip, such as a chip with a model of UCC 27201.
In one embodiment, the first filter 400 includes a first resistor R3, a second resistor R1, a third resistor R18, and a first capacitor C22; the first end of the first resistor R3 is connected with the high-end output end of the signal isolation chip; the first end of the second resistor R1 is connected with the second end of the first resistor R3, and the second end of the second resistor R1 is connected with the floating ground pin of the signal isolation chip; a first end of the third resistor R18 is connected with a second end of the first resistor R3; the first end of the first capacitor is connected with the second end of the third resistor R18; the second end of the first capacitor C22 is connected to the floating ground pin of the signal isolation chip. The anode of the first voltage follower 500 is connected to the second end of the third resistor R18; the cathode of the first voltage follower 500 is connected with the output end of the first voltage follower 500; the ground terminal of the first voltage follower 500 is connected to the floating ground pin of the signal isolation chip; the supply voltage terminal VCC of the first voltage follower 500 is connected to a first power source VCC _ M2.
In one embodiment, the second filter 600 includes a fourth resistor 35, a fifth resistor 34, a sixth resistor C36, and a second capacitor C43; the first end of the fourth resistor 35 is connected to the low-end output end of the signal isolation chip; a first end of the fifth resistor 34 is connected with a second end of the fourth resistor 35, and a second end of the fifth resistor 34 is connected with a floating ground pin of the signal isolation chip; a first end of the sixth resistor C36 is connected to a second end of the fourth resistor 35; a first end of the second capacitor C43 is connected with a second end of the sixth resistor C36; the second end of the second capacitor C43 is connected to the floating ground pin of the signal isolation chip. The anode of the second voltage follower 700 is connected to the second end of the sixth resistor C36; the cathode of the second voltage follower 700 is connected to the output terminal of the second voltage follower 700; the ground terminal of the second voltage follower 700 is connected with the floating ground pin of the signal isolation chip; the supply voltage terminal VCC of the second voltage follower 700 is connected to a second power supply VCC _ M3.
It should be noted that the above mentioned embodiments are only specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and all the changes or substitutions should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (6)
1. An output series regulator circuit, comprising: a potentiometer connected with the reference voltage end; the signal generator is connected with the potentiometer; the signal isolator is connected with the signal generator; a first filter connected to the signal isolator; a first voltage follower connected to the first filter; the first voltage regulating end is connected with the first voltage follower; a second filter connected to the signal isolator; a second voltage follower connected to the second filter; and the second voltage regulating end is connected with the first voltage follower.
2. The output series voltage regulator circuit of claim 1, wherein the signal isolator is a signal isolation chip.
3. The output series regulator circuit according to claim 2, wherein the first filter comprises a first resistor, a second resistor, a third resistor, and a first capacitor; the first end of the first resistor is connected with the high-end output end of the signal isolation chip; the first end of the second resistor is connected with the second end of the first resistor, and the second end of the second resistor is connected with the floating ground pin of the signal isolation chip; the first end of the third resistor is connected with the second end of the first resistor; the first end of the first capacitor is connected with the second end of the third resistor; and the second end of the first capacitor is connected with the floating ground pin of the signal isolation chip.
4. The output series regulator circuit according to claim 3, wherein the positive electrode of the first voltage follower is connected to the second end of the third resistor; the negative electrode of the first voltage follower is connected with the output end of the first voltage follower; the grounding end of the first voltage follower is connected with the floating ground pin of the signal isolation chip; and the power supply voltage end of the first voltage follower is connected with a first power supply.
5. The output series regulator circuit according to claim 2, wherein the second filter comprises a fourth resistor, a fifth resistor, a sixth resistor and a second capacitor; the first end of the fourth resistor is connected with the low-end output end of the signal isolation chip; the first end of the fifth resistor is connected with the second end of the fourth resistor, and the second end of the fifth resistor is connected with the floating ground pin of the signal isolation chip; the first end of the sixth resistor is connected with the second end of the fourth resistor; the first end of the second capacitor is connected with the second end of the sixth resistor; and the second end of the second capacitor is connected with the floating ground pin of the signal isolation chip.
6. The output series regulator circuit according to claim 5, wherein the anode of the second voltage follower is connected to the second end of the sixth resistor; the negative electrode of the second voltage follower is connected with the output end of the second voltage follower; the grounding end of the second voltage follower is connected with the floating ground pin of the signal isolation chip; and the power supply voltage end of the second voltage follower is connected with a second power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020111257.5U CN211015188U (en) | 2020-01-17 | 2020-01-17 | Output series voltage regulating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020111257.5U CN211015188U (en) | 2020-01-17 | 2020-01-17 | Output series voltage regulating circuit |
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| Publication Number | Publication Date |
|---|---|
| CN211015188U true CN211015188U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020111257.5U Active CN211015188U (en) | 2020-01-17 | 2020-01-17 | Output series voltage regulating circuit |
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| CN (1) | CN211015188U (en) |
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2020
- 2020-01-17 CN CN202020111257.5U patent/CN211015188U/en active Active
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