CN217607703U - Voltage regulation circuit and output power supply comprising same - Google Patents
Voltage regulation circuit and output power supply comprising same Download PDFInfo
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- CN217607703U CN217607703U CN202220231293.4U CN202220231293U CN217607703U CN 217607703 U CN217607703 U CN 217607703U CN 202220231293 U CN202220231293 U CN 202220231293U CN 217607703 U CN217607703 U CN 217607703U
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Abstract
The utility model provides a voltage regulation circuit and contain its output power supply, including control module and power amplification module, power amplification module is used for exporting the appointed output voltage of user, and power amplification module includes power amplifier and the first supply voltage, the second supply voltage who is connected with power amplifier, and control module connects first supply voltage, second supply voltage for adjust power amplifier's output voltage value. The utility model provides a circuit can be through user's appointed output voltage and output current, nimble adjustment supply voltage's magnitude of voltage and the resistance value of output resistance to keep at lower consumption. The whole structure of the circuit is not complex, the problem of serious heating when high-voltage power supplies such as SMU, VIS and the like in the testing machine output low-voltage large current is solved, and the effect of reducing devices and areas required by heat dissipation is achieved.
Description
Technical Field
The utility model belongs to technique ATE test equipment field, concretely relates to voltage regulation circuit and contain its output power supply.
Background
With the increase of chip diversification, the test requirements of high-voltage and high-current chips are continuously increased. The capacity of voltage and current output by SMU, VI S and the like in the tester is increasingly large, the high-voltage power supply generates heat seriously when outputting low-voltage large current, the heat dissipation area and the size of a heat dissipation fin need to be increased, the area of a PCB (printed circuit board) is occupied, the cost is increased, and multi-channel output in a limited area is difficult to achieve.
For example, when the high-voltage SMU outputs low-voltage large current, the voltage drop at the PA is too large, which increases the PA power consumption and causes severe heating, and the heat dissipation area and the size of the heat dissipation fin must be increased, but the increased heat dissipation area and the size of the heat dissipation fin occupy the single board area of the PCB, which increases the cost, and it is difficult to achieve multi-channel output in a limited area.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a voltage adjusting circuit, which comprises a control module and a power amplification module, wherein the power amplification module is used for outputting output voltage specified by a user, and comprises a power amplifier, and a first power supply voltage and a second power supply voltage which are connected with the power amplifier;
the power amplifier is used for outputting a voltage specified by a user at an output end after the voltage output by the first power supply voltage or the second power supply voltage is dropped;
the control module is respectively in signal connection with the first power supply voltage and the second power supply voltage and is used for adjusting a positive voltage output value of the first power supply voltage and a negative voltage output value of the second power supply voltage.
Preferably, the output end of the power amplifier is connected with a first resistor, the first resistor is a variable resistor, the first resistor is in signal connection with the control module, and the control module is used for adjusting the resistance value of the first resistor.
Specifically, the control module includes a controller, and a second digital-to-analog converter and a third digital-to-analog converter connected to the controller, where the controller is connected to the first power supply voltage through the second digital-to-analog converter, and the controller is connected to the second power supply voltage through the third digital-to-analog converter.
Specifically, a power supply for supplying power to the power amplifier is arranged between the control module and the power amplification module.
Preferably, the power supply comprises a first linear power supply and a second linear power supply, the first linear power supply is a positive voltage linear power supply, and the first linear power supply is arranged between the second digital-to-analog converter and the first power supply voltage;
the second linear power supply is a negative-pressure linear power supply, and the second linear power supply is arranged between the third digital-to-analog converter and the second power supply voltage.
Furthermore, the voltage regulation circuit further comprises an integral control module for ensuring the stability of the output voltage, and the integral control module is arranged between the control module and the power amplification module.
Furthermore, the voltage adjusting circuit further comprises a voltage feedback module for controlling and eliminating the generated error, and the voltage feedback module is connected with the power amplifying module and the integral control module.
Specifically, be connected with current detection module between power amplification module and the circuit output, voltage feedback module connects the circuit output, current detection module with voltage feedback module connects AD sampling module jointly, AD sampling module is used for converting voltage current to the digital quantity, and sends to the controller.
Specifically, the integral control module comprises a first amplifier and a second amplifier, the voltage feedback module comprises a third amplifier, and the control module further comprises a first digital-to-analog converter;
the positive electrode of the power amplifier is grounded, the negative electrode of the power amplifier is connected with the output end of the first amplifier through a third resistor, and a second resistor is connected in parallel between the negative electrode of the power amplifier and the output end of the power amplifier;
the positive electrode of the first amplifier is grounded, the negative electrode of the first amplifier is connected with the output end of the second amplifier through a fourth resistor, and a capacitor is connected in parallel between the negative electrode of the first amplifier and the output end of the first amplifier;
the anode of the second amplifier is grounded, the cathode of the second amplifier is connected with the first digital-to-analog converter through a sixth resistor, and a fifth resistor is connected in parallel between the cathode of the second amplifier and the output end of the second amplifier;
the output end of the third amplifier is connected with the negative electrode of the second amplifier through a seventh resistor, the positive electrode of the third amplifier is grounded, the negative electrode of the third amplifier is connected with the power amplification module through a ninth resistor and the first resistor, and an eighth resistor is connected between the negative electrode of the third amplifier and the output end of the third amplifier in parallel.
The utility model also provides an output power supply, include as before a voltage regulator circuit.
The utility model discloses following beneficial effect has at least:
the voltage value of the power supply voltage is flexibly adjusted through the appointed output voltage of a user, and the adjustable resistor is arranged, so that the user can simultaneously appoint the output current, lower power consumption is kept, and devices and areas required by heat dissipation are reduced;
further, the utility model provides a voltage regulation circuit is at 3-5V with supply voltage and user's appointed output voltage's differential pressure control, when guaranteeing that output voltage is sufficient, still sets up integral control and voltage feedback simultaneously, has guaranteed output voltage's stability to prevent the error.
Therefore, the utility model provides a voltage regulating circuit and contain its output power supply, the circuit can be through user's appointed output voltage and output current, nimble adjustment supply voltage's magnitude of voltage and the resistance value of output resistance to keep at lower consumption. The whole structure of the circuit is not complex, the problem of serious heating when high-voltage power supplies such as SMU, VI S and the like in the testing machine output low-voltage large current is solved, and the effect of reducing devices and areas required by heat dissipation is achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic diagram of an overall structure module of a voltage regulation circuit according to the present invention;
fig. 2 is a schematic diagram of a circuit structure of a voltage adjusting circuit according to the present invention.
Reference numerals:
1-a control module; 2-a power amplification module; 3-integrating the control module; 4-a voltage feedback module; 5-a current detection module; 6-AD sampling module; 11-a controller.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
Please refer to fig. 1, the utility model provides a voltage regulating circuit for solve the serious problem of generating heat when high voltage power output low pressure heavy current such as the inside SMU of test machine, VIs S, through using the utility model provides a voltage regulating circuit can effectively reduce the consumption, makes required heat radiating area and fin size reduction, reduces occuping of PCB veneer area, voltage regulating circuit includes control module 1 and power amplification module 2, power amplification module 2 is used for exporting user' S appointed output voltage Vout.
Specifically, referring to fig. 2, the power amplification module 2 includes a power amplifier PA1, and a first power supply voltage V +, a second power supply voltage V-, connected to the power amplifier PA1, where the first power supply voltage V + is used to output a positive voltage, the second power supply voltage V-is used to output a negative voltage, and the power amplifier PA1 is used to drop a voltage output by the first power supply voltage V + or the second power supply voltage V-and output an output voltage specified by a user at an output terminal.
The positive and negative voltages of the positive voltage output from the first power supply voltage V + and the negative voltage output from the second power supply voltage V-are referenced to Vout.
The control module 1 is respectively in signal connection with a first power supply voltage V + and a second power supply voltage V-, the control module 1 is connected with a user interface, and can adjust a positive voltage output value of the first power supply voltage V + and a negative voltage output value of the second power supply voltage V-according to an output voltage appointed by a user on the user interface, specifically comprising the following steps:
when the appointed output voltage of a user is positive voltage, power is supplied by a first power supply voltage V +, so that the positive voltage output value of the first power supply voltage V + is not lower than the voltage value of the appointed output voltage; when the appointed output voltage of the user is negative voltage, the power is supplied by a second power supply voltage V-, and the absolute value of the negative voltage output value of the second power supply voltage V-is not lower than that of the appointed output voltage.
Preferably, when the user's specified output voltage is positive, the power is supplied by the first power supply voltage V +, so that the positive voltage output value of the first power supply voltage V + is higher than the voltage value of the specified output voltage by 3-5V; when the designated output voltage of the user is negative voltage, the power is supplied by a second power supply voltage V-, so that the negative voltage output value of the second power supply voltage V-is higher than the absolute value of the designated output voltage by 3-5V. The voltage difference between the power supply voltage and the specified output voltage of a user is controlled to be 3-5V, so that the power amplifier PA1 can be controlled to keep low power consumption while the output voltage is ensured to be sufficient.
The control module 1 comprises a controller 11, wherein the controller 11 is connected with an external user interface and is used for receiving a signal of controlling an input voltage by a user and adjusting a positive voltage output value of a first power supply voltage V + and a negative voltage output value of a second power supply voltage V-;
specifically, the control module 1 further includes a first digital-to-analog converter DAC1, a second digital-to-analog converter DAC2, and a third digital-to-analog converter DAC3 connected to the controller 11, the controller 11 is connected to the first power supply voltage V + through the second digital-to-analog converter DAC2, and adjusts a positive voltage output value of the first power supply voltage V +, and the controller 11 is connected to the second power supply voltage V-through the third digital-to-analog converter DAC3, and adjusts a negative voltage output value of the second power supply voltage V-.
A power supply for supplying power to the power amplifier PA1 is arranged between the control module 1 and the power amplification module 2, in this embodiment, the power supply includes a first linear power supply and a second linear power supply, the first linear power supply is a positive-voltage linear power supply, and the first linear power supply is arranged between the second digital-to-analog converter DAC2 and a first supply voltage V +; the second linear power supply is a negative voltage linear power supply, and is arranged between the third digital-to-analog converter DAC3 and the second power supply voltage V-. In other embodiments, the power supply may include other power supplies such as a DC-DC power supply.
Further, an output end of the power amplifier PA1 is connected to a first resistor R1, the first resistor R1 is a variable resistor, the first resistor R1 is in signal connection with the controller 11, and the controller 11 can receive a signal for controlling an input current by a user, and adjust a resistance value of the first resistor R1 according to an output current specified by the user, so that the power amplification module 2 outputs the output current specified by the user.
For example, when a user needs to use 40V and 1A output, the control module 1 controls the first supply voltage V + output to be 45V, the voltage drop of the power amplifier PA1 is 5V, and the power consumption of the power amplifier PA1 is only 5W; when a user needs to use 1V and 1A outputs, the control module 1 controls the first power supply voltage V + output to be 5V, the voltage drop of the power amplifier PA1 is 4V, and the power consumption of the power amplifier PA1 is only 4W. Through the utility model provides a voltage regulating circuit only needs very little heat dissipation, can realize exporting appointed voltage and electric current.
The voltage regulation circuit also comprises an integral control module 3 and a voltage feedback module 4, wherein the integral control module 3 is arranged between the control module 1 and the power amplification module 2, and the stability of output voltage is ensured through analog loop control; the voltage feedback module 4 is connected with the power amplification module 2 and the integral control module 3, can realize voltage sampling and is used for controlling and eliminating generated errors.
Further, be connected with current detection module 5 between power amplification module 2 and the circuit output, voltage feedback module 4 is connected with the circuit output, and current detection module 5 and voltage feedback module 4 are connected AD sampling module 6 jointly, AD sampling module 6 is used for converting actual voltage electric current into digital quantity to send to controller 11.
Specifically, the integral control module 3 includes a first amplifier and a second amplifier, the anode of the power amplifier PA1 is grounded, the cathode of the power amplifier PA1 is connected to the output end of the first amplifier through a third resistor R3, and a second resistor R2 is connected in parallel between the cathode of the power amplifier PA1 and the output end of the power amplifier PA 1;
the positive electrode of the first amplifier is grounded, the negative electrode of the first amplifier is connected with the output end of the second amplifier through a fourth resistor R4, and a capacitor C1 is connected in parallel between the negative electrode of the first amplifier and the output end of the first amplifier;
the anode of the second amplifier is grounded, the cathode of the second amplifier is connected with the first digital-to-analog converter DAC1 through a sixth resistor R6, and a fifth resistor R5 is connected between the cathode of the second amplifier and the output end of the second amplifier in parallel.
The voltage feedback module 4 comprises a third amplifier, the output end of the third amplifier is connected with the negative electrode of the second amplifier through a seventh resistor R7, the positive electrode of the third amplifier is grounded, the negative electrode of the third amplifier is connected with the power amplification module 2 through a ninth resistor R9 and a first resistor R1, and an eighth resistor R8 is connected between the negative electrode of the third amplifier and the output end of the third amplifier in parallel.
It should be noted that in this embodiment, the first amplifier, the second amplifier, and the third amplifier are all common amplifiers or high voltage amplifiers.
The utility model also provides an output power supply, output power supply includes the utility model provides a pair of voltage regulating circuit.
To sum up, the utility model provides a voltage regulating circuit and contain its output power supply can be through user's appointed output voltage and output current, adjust supply voltage's magnitude of voltage and output resistance's resistance value in a flexible way to keep at lower consumption. The whole structure of the circuit is not complex, the problem of serious heating when high-voltage power supplies such as SMUs and VI Ss in the testing machine output low-voltage large current is solved, and the effect of reducing devices and areas required by heat dissipation is achieved.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. A voltage regulation circuit is characterized by comprising a control module and a power amplification module, wherein the power amplification module is used for outputting an output voltage designated by a user, and comprises a power amplifier, a first power supply voltage and a second power supply voltage which are connected with the power amplifier;
the power amplifier is used for outputting a voltage specified by a user at an output end after the voltage output by the first power supply voltage or the second power supply voltage is dropped;
the control module is respectively in signal connection with the first power supply voltage and the second power supply voltage and is used for adjusting a positive voltage output value of the first power supply voltage and a negative voltage output value of the second power supply voltage.
2. The voltage regulation circuit of claim 1, wherein a first resistor is connected to an output of the power amplifier, the first resistor is a variable resistor, the first resistor is in signal connection with the control module, and the control module is configured to adjust a resistance of the first resistor.
3. The voltage regulator circuit according to claim 2, wherein the control module comprises a controller, and a second digital-to-analog converter and a third digital-to-analog converter connected to the controller, the controller is connected to the first power supply voltage through the second digital-to-analog converter, and the controller is connected to the second power supply voltage through the third digital-to-analog converter.
4. The voltage regulation circuit of claim 3, wherein a power supply is disposed between the control module and the power amplification module for supplying power to the power amplifier.
5. The voltage regulation circuit of claim 4, wherein the power supply comprises a first linear power supply and a second linear power supply, the first linear power supply is a positive voltage linear power supply, and the first linear power supply is disposed between the second digital-to-analog converter and the first power supply voltage;
the second linear power supply is a negative-voltage linear power supply, and is arranged between the third digital-to-analog converter and the second power supply voltage.
6. The voltage regulation circuit of claim 3, further comprising an integral control module for ensuring the output voltage is stable, wherein the integral control module is disposed between the control module and the power amplification module.
7. The voltage regulation circuit of claim 6 further comprising a voltage feedback module for controlled cancellation of the generated error, the voltage feedback module being connected to the power amplification module and the integral control module.
8. The voltage regulation circuit of claim 7, wherein a current detection module is connected between the power amplification module and the circuit output terminal, the voltage feedback module is connected to the circuit output terminal, the current detection module and the voltage feedback module are commonly connected to an AD sampling module, and the AD sampling module is configured to convert a voltage and a current into a digital quantity and send the digital quantity to the controller.
9. The voltage regulation circuit of claim 7, wherein the integral control module comprises a first amplifier and a second amplifier, the voltage feedback module comprises a third amplifier, and the control module further comprises a first digital-to-analog converter;
the positive electrode of the power amplifier is grounded, the negative electrode of the power amplifier is connected with the output end of the first amplifier through a third resistor, and a second resistor is connected in parallel between the negative electrode of the power amplifier and the output end of the power amplifier;
the positive electrode of the first amplifier is grounded, the negative electrode of the first amplifier is connected with the output end of the second amplifier through a fourth resistor, and a capacitor is connected in parallel between the negative electrode of the first amplifier and the output end of the first amplifier;
the anode of the second amplifier is grounded, the cathode of the second amplifier is connected with the first digital-to-analog converter through a sixth resistor, and a fifth resistor is connected in parallel between the cathode of the second amplifier and the output end of the second amplifier;
the output end of the third amplifier is connected with the negative electrode of the second amplifier through a seventh resistor, the positive electrode of the third amplifier is grounded, the negative electrode of the third amplifier is connected with the power amplification module through a ninth resistor and the first resistor, and an eighth resistor is connected between the negative electrode of the third amplifier and the output end of the third amplifier in parallel.
10. An output power supply comprising a voltage regulation circuit as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220231293.4U CN217607703U (en) | 2022-01-25 | 2022-01-25 | Voltage regulation circuit and output power supply comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220231293.4U CN217607703U (en) | 2022-01-25 | 2022-01-25 | Voltage regulation circuit and output power supply comprising same |
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| Publication Number | Publication Date |
|---|---|
| CN217607703U true CN217607703U (en) | 2022-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220231293.4U Active CN217607703U (en) | 2022-01-25 | 2022-01-25 | Voltage regulation circuit and output power supply comprising same |
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| Country | Link |
|---|---|
| CN (1) | CN217607703U (en) |
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2022
- 2022-01-25 CN CN202220231293.4U patent/CN217607703U/en active Active
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