CN220651151U - Power module output voltage regulating circuit - Google Patents
Power module output voltage regulating circuit Download PDFInfo
- Publication number
- CN220651151U CN220651151U CN202322495039.2U CN202322495039U CN220651151U CN 220651151 U CN220651151 U CN 220651151U CN 202322495039 U CN202322495039 U CN 202322495039U CN 220651151 U CN220651151 U CN 220651151U
- Authority
- CN
- China
- Prior art keywords
- resistor
- capacitor
- operational amplifier
- circuit
- output voltage
- 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
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 21
- 238000005070 sampling Methods 0.000 claims abstract description 38
- 230000005284 excitation Effects 0.000 claims abstract description 16
- 239000003990 capacitor Substances 0.000 claims description 40
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model discloses a power module output voltage regulating circuit, which comprises a sampling circuit with an excitation source connection interface, a first-stage filter circuit connected with the sampling circuit, an operational amplifier connected with the first-stage filter circuit, and a phototriode connected with the operational amplifier, wherein the sampling circuit is connected with the excitation source connection interface; a second-stage filter circuit is connected between the operational amplifier and the phototriode, the third pin end of the phototriode is connected with negative induced voltage, the fourth pin end of the phototriode is connected with a first resistor, and an output end of the first resistor outputs an adjusting signal; the utility model can realize simple and convenient Control of the output voltage of the module, can regulate the output voltage in real time, connects an excitation source to a control+ interface, and can regulate a resistance signal between the trim and the sense according to the change of excitation so as to change the output voltage value of the module.
Description
Technical Field
The utility model relates to the technical field of output voltage regulation of a printed power supply module, in particular to a power supply module output voltage regulation circuit.
Background
When the product design is carried out by using power supply module products of manufacturers such as foreign VICTOR power supply and domestic army Tao Dianyuan, the output voltage of the power supply module needs to be changed according to the actual application requirement, and the output voltage of the voltage regulating circuit of the power supply module on the market is difficult to be regulated in real time and controllably; therefore, a power module output voltage adjusting circuit is provided to solve the above-mentioned problems.
Disclosure of Invention
The utility model aims to provide a power module output voltage regulating circuit which is used for solving the problems that the power module output voltage is inconvenient to regulate and the output voltage is difficult to regulate in real time in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the power module output voltage regulating circuit comprises a sampling circuit with an excitation source connection interface, a first-stage filter circuit connected with the sampling circuit, an operational amplifier connected with the first-stage filter circuit, and a phototriode connected with the operational amplifier; the photoelectric triode comprises an operational amplifier, a photoelectric triode, a first resistor, a second resistor, a third pin end of the photoelectric triode, a fourth pin end of the photoelectric triode, a first output end of the first resistor, a second resistor and a fourth pin end of the photoelectric triode, wherein a second filter circuit is connected between the operational amplifier and the photoelectric triode, the third pin end of the photoelectric triode is connected with negative induced voltage, the fourth pin end of the photoelectric triode is connected with the first resistor, an output end of the first resistor outputs an adjusting signal, the other output end of the first resistor is connected with the second resistor, and the output end of the second resistor is connected with positive induced voltage.
Preferably, the primary filter circuit comprises a resistor R3, a capacitor C1 and a capacitor C2, wherein the common terminal of the resistor R3 and the capacitor C2 is connected to the GND line, one end of the capacitor C1 is connected to the GND line, and the common terminal of the capacitor C2 and the resistor R3 and one end of the capacitor C1 are connected to the operational amplifier.
Preferably, the secondary filter circuit comprises a resistor R5 and a capacitor C4, wherein the output end of the resistor R5 is connected with the capacitor C4, one end of the capacitor C4 is connected with the GND line, and the common end of the resistor R5 and the capacitor C4 is connected with the phototransistor.
Preferably, a power supply circuit is connected to the fourth pin end of the operational amplifier, and the power supply circuit comprises a capacitor C3.
Preferably, the sampling circuit comprises a sampling resistor R1 and a sampling resistor R2, the sampling resistor R1 is connected to the negative end of the operational amplifier, the sampling resistor R2 is connected to the positive end of the operational amplifier, and the output end of the sampling resistor R2 is connected to the common end of the resistor R3 and the capacitor C2.
The beneficial effects of the utility model are as follows: the utility model can realize the simple Control of the output voltage of the module by means of the cooperation of the operational amplifier and the phototriode, so that the output voltage of the power supply module can be regulated more simply and conveniently, the output voltage can be regulated in real time, and meanwhile, an excitation source is connected to a control+ interface, so that the resistance value signal between trim and sense can be regulated according to the change of excitation, the output voltage value of the module is changed, and the popularization and the use of the output voltage regulating circuit are facilitated.
Drawings
Fig. 1 is a circuit diagram of an output voltage regulation of a power module according to the present utility model.
In the figure: the circuit comprises a sampling circuit 1, a first-stage filter circuit 2, an operational amplifier 3, a power supply circuit 4, a second-stage filter circuit 5, a phototriode 6, a first resistor 7, a second resistor 8, a positive electrode induced voltage 9, a regulating signal 10 and a negative electrode induced voltage 11.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, a technical scheme is provided for the present utility model, which is a power module output voltage adjusting circuit, including a sampling circuit 1 having an excitation source connection interface, a first-stage filter circuit 2 connected with the sampling circuit 1, an operational amplifier 3 connected with the first-stage filter circuit 2, and a phototransistor 6 connected with the operational amplifier 3; a power supply circuit 4 is connected to the fourth pin end of the operational amplifier 3, and the power supply circuit 4 comprises a capacitor C3; a second-stage filter circuit 5 is connected between the operational amplifier 3 and the phototriode 6, the third pin end of the phototriode 6 is connected with a negative electrode induced voltage 11, the fourth pin end of the phototriode 6 is connected with a first resistor 7, an output end of the first resistor 7 outputs an adjusting signal 10, the other output end of the first resistor 7 is connected with a second resistor 8, and the output end of the second resistor 8 is connected with a positive electrode induced voltage 9.
In this embodiment, the first-stage filter circuit 2 includes a resistor R3, a capacitor C1 and a capacitor C2, wherein a common terminal of the resistor R3 and the capacitor C2 is connected to the GND line, one end of the capacitor C1 is connected to the GND line, and a common terminal of the capacitor C2 and the resistor R3 and one end of the capacitor C1 are connected to the operational amplifier 3; the mentioned two-stage filter circuit 5 comprises a resistor R5 and a capacitor C4, wherein the output end of the resistor R5 is connected with the capacitor C4, one end of the capacitor C4 is connected with a GND line, and the common end of the resistor R5 and the capacitor C4 is connected with the phototriode 6; the primary filter circuit 2 and the secondary filter circuit 5 are configured to filter the input excitation current to obtain an accurate voltage signal.
In this embodiment, the sampling circuit 1 includes a sampling resistor R1 and a sampling resistor R2, the sampling resistor R1 is connected to the negative terminal of the operational amplifier 3, the sampling resistor R2 is connected to the positive terminal of the operational amplifier 3, and the output terminal of the sampling resistor R2 is connected to the common terminal of the resistor R3 and the capacitor C2; the excitation source is connected to the control+ interface, and can adjust the resistance signal between the trim and the sense according to the excitation change, and change the output voltage value of the module, wherein the sense is positive electrode induced voltage 9 and negative electrode induced voltage 11, and the trim is an adjustment signal 10.
The sampling circuit 1 is used for sampling the voltage of the excitation source and outputting a voltage signal, the sampling circuit 1 couples the voltage signal to a voltage reference value as input compensation, the operational amplifier 3 is used for calculating the difference value between the voltage feedback value output by the power supply module and the voltage reference value, the calculation result forms a control signal and is input to the phototriode 6, and the phototriode 6 is used for adjusting the excitation current, so that the voltage regulation of the power supply module is realized.
The power supply module outputs a voltage regulating circuit, a first resistor 7 is marked by a resistor R6, and a second resistor 8 is marked by a resistor R7; the excitation source of the power supply module is connected to a sampling resistor R1, the sampling resistor R1 is connected to the negative electrode end of the operational amplifier 3, a capacitor C1 is arranged between the sampling resistor R1 and the negative electrode end of the operational amplifier 3, and the other end of the capacitor C1 is grounded to a GND line; the positive electrode end of the operational amplifier 3 is connected with a sampling resistor R2, the other end of the sampling resistor R2 is grounded to GND, and a first-stage filter circuit 2, namely a resistor R3 and a resistor R2, is connected between the sampling resistor R2 and the positive electrode end of the operational amplifier 3; the fourth pin of the operational amplifier 3 is connected with the power supply circuit 4 of +15VH, the eighth pin of the operational amplifier 3 is connected with the GND, the output end of the operational amplifier 3 is connected with the resistor R5 and the capacitor C4, and the resistor R4 is connected in parallel between one end of the capacitor R5 and the sampling resistor R1.
It is specifically noted that the operational amplifier 3 and the phototransistor 6 can be in a standard commonly used in the market, and the structures and principles of the operational amplifier 3 and the phototransistor 6 are known in the market, so that detailed description thereof is omitted herein; the power supply module output voltage regulating circuit needs to consider the voltage regulating parameter, the output voltage regulating range, the excitation source parameter and the like of the module to design the detailed parameters of the circuit when the module is applied, and a corresponding interface is reserved when the printed circuit is drawn, so that TRIM and SENSE points are connected to the module voltage regulating pins.
Use examples: and a trim end of the voltage regulating circuit and a sense positive and negative electrode port are connected with voltage regulating pins of the storage battery charging control circuit, and the voltage regulating circuit can regulate the output voltage of the module to regulate the charging circuit in real time.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples only represent preferred embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model; it should be noted that, for those skilled in the art, it is possible to make several variations and modifications without departing from the concept of the present utility model, which fall within the protection scope of the present utility model; in the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be the communication between the two elements or the interaction relationship between the two elements; the detachable mounting mode is various, for example, the detachable mounting mode can be matched with the buckle through plugging, for example, the detachable mounting mode can be realized through a bolt connection mode, and the like.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a power module output voltage regulating circuit which characterized in that: the device comprises a sampling circuit with an excitation source connection interface, a first-stage filter circuit connected with the sampling circuit, an operational amplifier connected with the first-stage filter circuit, and a phototriode connected with the operational amplifier; the photoelectric triode comprises an operational amplifier, a photoelectric triode, a first resistor, a second resistor, a third pin end of the photoelectric triode, a fourth pin end of the photoelectric triode, a first output end of the first resistor, a second resistor and a fourth pin end of the photoelectric triode, wherein a second filter circuit is connected between the operational amplifier and the photoelectric triode, the third pin end of the photoelectric triode is connected with negative induced voltage, the fourth pin end of the photoelectric triode is connected with the first resistor, an output end of the first resistor outputs an adjusting signal, the other output end of the first resistor is connected with the second resistor, and the output end of the second resistor is connected with positive induced voltage.
2. The power module output voltage regulation circuit of claim 1 wherein: the primary filter circuit comprises a resistor R3, a capacitor C1 and a capacitor C2, wherein the public end of the resistor R3 and the common end of the capacitor C2 are connected with a GND line, one end of the capacitor C1 is connected with the GND line, and the public end of the capacitor C2 and the resistor R3 and one end of the capacitor C1 are connected with the operational amplifier.
3. The power module output voltage regulation circuit of claim 1 wherein: the secondary filter circuit comprises a resistor R5 and a capacitor C4, wherein the output end of the resistor R5 is connected with the capacitor C4, one end of the capacitor C4 is connected with the GND line, and the public end of the resistor R5 and the capacitor C4 is connected with the phototriode.
4. The power module output voltage regulation circuit of claim 1 wherein: and a power supply circuit is connected to the fourth pin end of the operational amplifier, and the power supply circuit comprises a capacitor C3.
5. The power module output voltage regulation circuit of claim 1 wherein: the sampling circuit comprises a sampling resistor R1 and a sampling resistor R2, wherein the sampling resistor R1 is connected to the negative end of the operational amplifier, the sampling resistor R2 is connected to the positive end of the operational amplifier, and the output end of the sampling resistor R2 is connected to the common end of the resistor R3 and the capacitor C2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322495039.2U CN220651151U (en) | 2023-09-14 | 2023-09-14 | Power module output voltage regulating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322495039.2U CN220651151U (en) | 2023-09-14 | 2023-09-14 | Power module output voltage regulating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220651151U true CN220651151U (en) | 2024-03-22 |
Family
ID=90270436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322495039.2U Active CN220651151U (en) | 2023-09-14 | 2023-09-14 | Power module output voltage regulating circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220651151U (en) |
-
2023
- 2023-09-14 CN CN202322495039.2U patent/CN220651151U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108776500A (en) | It is a kind of based on frequency compensation and transient response improve circuit without capacitance LDO outside piece | |
| CN107707210B (en) | Self-zeroing high-gain differential amplifying circuit | |
| CN113691114B (en) | Output maximum load current control circuit and method | |
| CN216851374U (en) | Pre-charging circuit and chip | |
| CN110231846B (en) | Power module feedback control circuit with constant current and constant voltage dual functions | |
| CN220651151U (en) | Power module output voltage regulating circuit | |
| CN100508370C (en) | Source follower and its stable current feedback circuit | |
| CN102412724B (en) | Voltage-mode DC (direct current)/DC circuit with on-chip frequency compensation | |
| CN117193450A (en) | Improved structure of power module output voltage regulating circuit | |
| CN105005337A (en) | Digital temperature measuring and controlling instrument circuit | |
| CN204883430U (en) | Appearance circuit is observed and controled to digital temperature | |
| CN107302308B (en) | The adjusting circuit of Switching Power Supply output amplitude | |
| CN215581078U (en) | RC filter circuit with adjustable cut-off frequency | |
| CN111464141A (en) | Digital audio power amplifier and electronic equipment | |
| CN109787603B (en) | Low-conduction flatness analog switch | |
| CN204515577U (en) | A kind of voltage supply circuit based on potentiometer regulation output voltage | |
| CN113790837A (en) | Novel pressure detection circuit of digital potentiometer | |
| CN218481788U (en) | Quick-response voltage stabilizing circuit | |
| CN217060855U (en) | Low-noise and low-output internal resistance voltage stabilizing circuit | |
| CN218413307U (en) | Temperature regulating circuit for hydrogen sensor based on feedback control | |
| CN211702482U (en) | Circuit capable of automatically identifying current of light source | |
| CN218352397U (en) | Circuit for solving EMC through current compensation | |
| CN218496323U (en) | Sensor transmitter circuit composed of operational amplifier and transistor | |
| CN108429455A (en) | A kind of voltage conversion circuit and terminal device of power supply | |
| CN217543739U (en) | Ultra-low noise voltage stabilizing circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |