CN213879635U - Driving device and electronic apparatus - Google Patents
Driving device and electronic apparatus Download PDFInfo
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- CN213879635U CN213879635U CN202023341710.0U CN202023341710U CN213879635U CN 213879635 U CN213879635 U CN 213879635U CN 202023341710 U CN202023341710 U CN 202023341710U CN 213879635 U CN213879635 U CN 213879635U
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Abstract
The utility model relates to a driving device and electronic equipment, the driving device comprises a loop control module, a driving module, a detection module, a switch module and a current generation module, wherein the output end of the loop control module is electrically connected with the loop control module; the driving module is used for outputting driving voltage; the detection module is used for outputting a control signal according to the driving voltage so as to control the conduction state of the switch module; the switch module is used for receiving the starting current output by the current generation module and outputting the starting current to the input end of the driving module when the starting current is conducted, so that the driving module outputs driving voltage. The embodiment of the utility model provides a through the size of the driving voltage who detects the driving module output, the on-state of control switch module can be so that switch module produces the starting current of module output with the electric current when switching on and exports driving module's input to charge driving module's input, make driving module export stable driving voltage fast.
Description
Technical Field
The utility model relates to a power technical field especially relates to a drive arrangement and electronic equipment.
Background
An ip (intellectual property) module is a pre-designed, even verified, integrated circuit, device or component with certain functionality for use by chip designers for assembly or integration. Many IP modules need to be started by a special starting circuit to enter a working state, for example, the output voltage of the bandgap reference source does not change with the changes of temperature, process, power supply voltage and load, which is an important part in the design of an integrated circuit.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a driving device and electronic equipment to stable drive voltage is exported fast, drives stable, the efficient work of IP module.
According to one aspect of the present invention, a driving device is provided, which comprises a loop control module, a driving module, a detecting module, a switch module and a current generating module, wherein,
the output end of the loop control module is electrically connected to the input end of the driving module, and the input end of the loop control module is electrically connected to the first end of the driving module and is used for acquiring the voltage of the first end of the driving module so as to perform loop control;
the output end of the driving module is electrically connected to the first end of the detection module and is used for outputting driving voltage, and the power supply end of the driving module is used for receiving power supply voltage;
the second end of the detection module is electrically connected to the control end of the switch module and is used for outputting a control signal according to the driving voltage so as to control the conduction state of the switch module;
the first end of the switch module is electrically connected to the output end of the current generation module and is used for receiving the starting current output by the current generation module;
the second end of the switch module is electrically connected to the output end of the loop control module and the input end of the driving module, and is used for outputting the starting current to the input end of the driving module when the switch module is switched on, so that the driving module outputs driving voltage.
In one possible implementation, the detection module is configured to:
when the driving voltage is lower than a threshold voltage, outputting a control signal to control the switch module to be conducted; or
And when the driving voltage is greater than or equal to the threshold voltage, outputting a control signal to control the switch module to be switched off.
In one possible implementation, the detection module includes a comparator.
In one possible implementation, the loop control module includes a first operational amplifier, and the driving module includes a first transistor, a second transistor, a third transistor, a first resistor, a second resistor, and a third resistor, wherein,
the output end of the first operational amplifier is electrically connected to the control end of the first transistor, the control end of the first transistor is the input end of the driving module,
the positive input end of the first operational amplifier is electrically connected to the second end of the first resistor and the first end of the second transistor, the negative input end of the first operational amplifier is electrically connected to the second end of the second resistor and the first end of the third resistor,
the first end of the first transistor is used for receiving a power supply voltage, the second end of the first transistor is electrically connected with the first end of the first resistor and the first end of the second resistor,
the control end of the second transistor is electrically connected to the second end of the second transistor, the control end of the third transistor, the second end of the third transistor, and grounded,
any one of the first end of the second resistor, the second end of the second resistor and the second end of the third resistor is used as an output end of the driving module.
In one possible implementation manner, the first transistor is a metal-oxide semiconductor field effect transistor, and the second transistor and the third transistor are triodes.
In one possible implementation, the driving voltage is used to drive a bandgap voltage source.
In one possible implementation, the loop control module includes a second operational amplifier, and the driving module includes a fourth transistor, a fourth resistor, and a fifth resistor, wherein,
the output end of the second operational amplifier is electrically connected to the control end of the fourth transistor, the control end of the fourth transistor is the input end of the driving module,
the positive input end of the second operational amplifier is used for receiving a reference voltage,
the negative input end of the second operational amplifier is electrically connected to the second end of the fourth resistor and the first end of the fifth resistor, the second end of the fifth resistor is grounded,
a first terminal of the fourth transistor is for receiving the supply voltage,
a second terminal of the fourth transistor is electrically connected to a first terminal of the fourth resistor,
and the first end of the fourth resistor or the second end of the fourth resistor is used as the output end of the driving module.
In one possible implementation, the fourth transistor is a metal-oxide semiconductor field effect transistor.
In one possible implementation, the driving voltage is used to drive a low dropout linear regulator.
According to an aspect of the present invention, there is provided an electronic apparatus, including the driving device.
The embodiment of the utility model provides a through the size of the driving voltage who detects the driving module output, produce the on-state of control signal control switch module, can be so that switch module exports the starting current of current generation module output to driving module's input when switching on to charge driving module's input, make driving module export stable driving voltage fast.
Other features and aspects of the present invention will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present invention and, together with the description, serve to explain the principles of the invention.
Fig. 1 shows a schematic view of a drive arrangement according to an embodiment of the invention.
Fig. 2 shows a schematic view of a drive arrangement according to an embodiment of the invention.
Fig. 3 shows a schematic view of a drive arrangement according to an embodiment of the invention.
Detailed Description
Various exemplary embodiments, features and aspects of the present invention will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present invention. It will be understood by those skilled in the art that the present invention may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present invention.
Referring to fig. 1, fig. 1 is a schematic diagram illustrating a driving device according to an embodiment of the present invention.
As shown in fig. 1, the driving apparatus includes a loop control module 10, a driving module 20, a detecting module 30, a switching module 50 and a current generating module 40, wherein,
the output end of the loop control module 10 is electrically connected to the input end of the driving module 20, and the input end of the loop control module 10 is electrically connected to the first end of the driving module 20, and is configured to obtain a voltage at the first end of the driving module 20 for loop control;
the output end of the driving module 20 is electrically connected to the first end of the detecting module 30, and is configured to output a driving voltage Vout, and the power end of the driving module 20 is configured to receive a power voltage;
a second end of the detection module 30 is electrically connected to the control end of the switch module 50, and is configured to output a control signal according to the driving voltage Vout to control the on-state of the switch module 50;
a first end of the switch module 50 is electrically connected to the output end of the current generating module 40, and is configured to receive the starting current output by the current generating module 40;
a second end of the switch module 50 is electrically connected to the output end of the loop control module 10 and the input end of the driving module 20, and is configured to output the starting current to the input end of the driving module 20 when the switch module is turned on, so that the driving module 20 outputs a driving voltage Vout.
The embodiment of the utility model provides a through the size of the driving voltage who detects the driving module output, produce the on-state of control signal control switch module, can be so that switch module exports the starting current of current generation module output to driving module's input when switching on to charge driving module's input, make driving module export stable driving voltage fast.
The embodiment of the utility model provides an in can using electronic Equipment, electronic Equipment calls User Equipment (UE), Mobile Station (Mobile Station, MS), Mobile Terminal (Mobile Terminal, MT) etc. again, is the Equipment that provides pronunciation and/or data connectivity to the User, for example, has wireless connection's hand-held device, Mobile device etc.. Currently, some examples of terminals are: a Mobile Phone (Mobile Phone), a tablet computer, a notebook computer, a palm computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in Industrial Control (Industrial Control), a wireless terminal in unmanned driving (self driving), a wireless terminal in Remote Surgery (Remote medical Surgery), a wireless terminal in Smart Grid, a wireless terminal in Transportation Safety, a wireless terminal in Smart City (Smart City), a wireless terminal in Smart Home (Smart Home), a wireless terminal in car networking, and the like.
In one possible implementation, the detection module 30 may be configured to:
and when the driving voltage is lower than the threshold voltage, outputting a control signal to control the switch module to be conducted.
In one possible implementation, the detection module 30 may be configured to:
and when the driving voltage is greater than or equal to the threshold voltage, outputting a control signal to control the switch module to be switched off.
The detection module detects the driving voltage and compares the driving voltage with the threshold voltage, so that the switch module can be controlled to accelerate the driving module to output stable driving voltage.
In one possible implementation, the detection module may include a comparator.
The embodiment of the utility model provides a can utilize comparator driving voltage and threshold voltage's size to output comparison result signal, and regard comparison result signal as control signal, or obtain control signal according to comparison result signal, in order to realize the control to switch module.
The embodiment of the utility model provides a do not restrict threshold voltage's size, in an example, threshold voltage can be the same with target drive voltage.
In a possible implementation manner, the loop control module may include an operational amplifier, and the embodiment of the present invention does not limit the type and parameters of the operational amplifier, and those skilled in the art can set the types and parameters as needed.
The following is an exemplary description of possible implementations of the various modules.
Referring to fig. 2, fig. 2 is a schematic diagram illustrating a driving device according to an embodiment of the present invention.
In one possible implementation, as shown in fig. 2, the loop control module may include a first operational amplifier OP1, and the driving module may include a first transistor Q1, a second transistor Q2, a third transistor Q3, a first resistor R1, a second resistor R2, and a third resistor R3, wherein,
the output terminal of the first operational amplifier OP1 is electrically connected to the control terminal of the first transistor Q1, the control terminal of the first transistor Q1 is the input terminal of the driving module,
a positive input terminal of the first operational amplifier OP1 is electrically connected to the second terminal of the first resistor R1 and the first terminal of the second transistor Q2, a negative input terminal of the first operational amplifier OP1 is electrically connected to the second terminal of the second resistor R2 and the first terminal of the third resistor R3, wherein the second terminal of the first resistor R1 is used as the first terminal of the driving module,
a first terminal of the first transistor Q1 is for receiving a power voltage VDD, a second terminal of the first transistor Q1 is electrically connected to a first terminal of the first resistor R1 and a first terminal of the second resistor R2,
the control terminal of the second transistor Q2 is electrically connected to the second terminal of the second transistor Q2, the control terminal of the third transistor Q3, the second terminal of the third transistor Q3, and is connected to GND,
any one of the first end of the second resistor R2, the second end of the second resistor R2 and the second end of the third resistor R3 is used as the output end of the driving module.
In a possible implementation manner, as shown in fig. 2, the first Transistor Q1 may be a Metal-Oxide-Semiconductor Field Effect Transistor (MOSFET), such as an NMOS, a PMOS, or the like, and certainly may also be an NPN Transistor, a PNP Transistor, or the like, which is not limited in the embodiment of the present invention.
In one example, as shown in fig. 2, the second transistor Q2 and the third transistor Q3 may be triodes.
In a possible implementation, the switch module may include a first switch K1, and the first switch K1 may be a transistor, a single-pole single-throw switch, a multiplexer, or the like, and the embodiment of the present invention is not limited to the type of the first switch K1.
In a possible implementation manner, the driving voltage Vout may be used to drive an IP block such as a bandgap voltage source.
In an example, when band gap voltage source needs drive voltage Vout to reach target drive voltage, can start to output band gap voltage, drive voltage Vout establishes slower, and when perhaps unstable, band gap voltage source can't normally work, the utility model discloses a drive arrangement can produce stable drive voltage Vout fast, with start band gap voltage source for band gap voltage source can stable work.
In one example, when the detection module detects that the driving voltage Vout is less than the threshold voltage, the detection module outputs a control signal to control the switch module to be turned on, and outputs a start current to the control terminal of the first transistor to charge the first transistor, so that the first transistor is turned on at an accelerated speed, and the driving module can rapidly generate the driving voltage; when the detection module detects that the driving voltage reaches the threshold voltage, the detection module can output a control signal to control the switch module to be disconnected, so that the current generation module is disconnected with the driving module, the starting current is turned off, the driving voltage Vout and the starting current are decoupled, the discreteness of the driving voltage Vout is unrelated to the current generation module, and the stability of the driving voltage Vout generated by the driving module can be improved.
Referring to fig. 3, fig. 3 is a schematic diagram illustrating a driving device according to an embodiment of the present invention.
In one possible implementation, as shown in fig. 3, the loop control module may include a second operational amplifier OP2, and the driving module includes a fourth transistor Q4, a fourth resistor R4 and a fifth resistor R5, wherein,
the output terminal of the second operational amplifier OP2 is electrically connected to the control terminal of the fourth transistor Q4, the control terminal of the fourth transistor Q4 is the input terminal of the driving module,
the positive input terminal of the second operational amplifier OP2 is used for receiving a reference voltage Vref,
a negative input terminal of the second operational amplifier OP2 is electrically connected to the second terminal of the fourth resistor R4 and the first terminal of the fifth resistor R5, a second terminal of the fifth resistor R5 is grounded,
a first terminal of the fourth transistor Q4 is for receiving the supply voltage VDD,
a second terminal of the fourth transistor Q4 is electrically connected to a first terminal of the fourth resistor R4,
wherein a first terminal of the fourth resistor R4 or a second terminal of the fourth resistor R4 is used as an output terminal of the driving module.
In a possible implementation manner, the fourth transistor Q4 may be a metal-oxide semiconductor field effect transistor, for example, an NMOS, a PMOS, or the like, and certainly, may also be an NPN triode, a PNP triode, or the like, which is not limited in the embodiment of the present invention.
In one possible implementation, the driving voltage is used for an IP module such as a LDO (Low Dropout Regulator).
In one example, when the reference voltage Vref is input and stabilized, the EN terminal of the second operational amplifier OP2 can be enabled by the input enable signal, the second operational amplifier OP2 enters an operating state, the entire driving apparatus starts to enter the operating state, and when the detection module detects that the driving voltage Vout is less than the threshold voltage, the output control signal controls the switch module to be turned on, and outputs a start current to the control terminal of the fourth transistor to charge the fourth transistor, so that the fourth transistor is accelerated to be turned on, and the driving module can rapidly generate the driving voltage.
The embodiment of the utility model provides a do not restrict the production mode of reference voltage Vref, and the skilled in the art can adopt the mode of needs to realize as required.
In one possible implementation, as shown in fig. 2 and fig. 3, the current generating module 40 may generate the starting current by using a power voltage VDD, for example, a resistor unit may be disposed in the current generating module 40, and generate the corresponding starting current by setting a resistance value of the resistor unit, of course, the current generating module 40 may also generate the starting current by using a manner independent from the power voltage VDD, for example, in one possible implementation, the current generating module may include a current source, and generate the starting current by using the current source, and may also include a voltage source and a resistor, and generate the starting current by using the voltage source and the resistor, of course, as for the implementation of the current generating module, the embodiment of the present invention is not limited, and those skilled in the art may determine the implementation as needed.
Although the embodiment of the present invention has been described by taking a band gap voltage source and LDO as an example, it should be understood that the present invention provides a driving apparatus that can also be used as a starting circuit of other IP modules, and therefore, the embodiment of the present invention is not limited.
Through drive arrangement, the embodiment of the utility model provides a can accelerate drive voltage's establishment, produce stable, accurate drive voltage fast to drive each IP module, make each IP module can stabilize efficient work, above drive arrangement, the implementation is simple, has low power dissipation, characteristics with low costs.
While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. A driving device is characterized in that the driving device comprises a loop control module, a driving module, a detection module, a switch module and a current generation module, wherein,
the output end of the loop control module is electrically connected to the input end of the driving module, and the input end of the loop control module is electrically connected to the first end of the driving module and is used for acquiring the voltage of the first end of the driving module so as to perform loop control;
the output end of the driving module is electrically connected to the first end of the detection module and is used for outputting driving voltage, and the power supply end of the driving module is used for receiving power supply voltage;
the second end of the detection module is electrically connected to the control end of the switch module and is used for outputting a control signal according to the driving voltage so as to control the conduction state of the switch module;
the first end of the switch module is electrically connected to the output end of the current generation module and is used for receiving the starting current output by the current generation module;
the second end of the switch module is electrically connected to the output end of the loop control module and the input end of the driving module, and is used for outputting the starting current to the input end of the driving module when the switch module is switched on, so that the driving module outputs driving voltage.
2. The apparatus of claim 1, wherein the detection module is configured to:
when the driving voltage is lower than a threshold voltage, outputting a control signal to control the switch module to be conducted; or
And when the driving voltage is greater than or equal to the threshold voltage, outputting a control signal to control the switch module to be switched off.
3. The apparatus of claim 1 or 2, wherein the detection module comprises a comparator.
4. The apparatus of claim 1, wherein the loop control module comprises a first operational amplifier, wherein the driving module comprises a first transistor, a second transistor, a third transistor, a first resistor, a second resistor, and a third resistor, wherein,
the output end of the first operational amplifier is electrically connected to the control end of the first transistor, the control end of the first transistor is the input end of the driving module,
the positive input end of the first operational amplifier is electrically connected to the second end of the first resistor and the first end of the second transistor, the negative input end of the first operational amplifier is electrically connected to the second end of the second resistor and the first end of the third resistor,
the first end of the first transistor is used for receiving a power supply voltage, the second end of the first transistor is electrically connected with the first end of the first resistor and the first end of the second resistor,
the control end of the second transistor is electrically connected to the second end of the second transistor, the control end of the third transistor, the second end of the third transistor, and grounded,
any one of the first end of the second resistor, the second end of the second resistor and the second end of the third resistor is used as an output end of the driving module.
5. The apparatus of claim 4, wherein the first transistor is a metal-oxide-semiconductor field effect transistor, and the second and third transistors are triodes.
6. The apparatus of claim 4 or 5, wherein the drive voltage is used to drive a bandgap voltage source.
7. The apparatus of claim 1, wherein the loop control module comprises a second operational amplifier, wherein the driving module comprises a fourth transistor, a fourth resistor, and a fifth resistor, wherein,
the output end of the second operational amplifier is electrically connected to the control end of the fourth transistor, the control end of the fourth transistor is the input end of the driving module,
the positive input end of the second operational amplifier is used for receiving a reference voltage,
the negative input end of the second operational amplifier is electrically connected to the second end of the fourth resistor and the first end of the fifth resistor, the second end of the fifth resistor is grounded,
a first terminal of the fourth transistor is for receiving the supply voltage,
a second terminal of the fourth transistor is electrically connected to a first terminal of the fourth resistor,
and the first end of the fourth resistor or the second end of the fourth resistor is used as the output end of the driving module.
8. The apparatus of claim 7, wherein the fourth transistor is a metal-oxide-semiconductor field effect transistor.
9. The apparatus of claim 7 or 8, wherein the driving voltage is used to drive a low dropout linear regulator.
10. An electronic device, characterized in that the electronic device comprises a drive apparatus according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023341710.0U CN213879635U (en) | 2020-12-31 | 2020-12-31 | Driving device and electronic apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023341710.0U CN213879635U (en) | 2020-12-31 | 2020-12-31 | Driving device and electronic apparatus |
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| CN213879635U true CN213879635U (en) | 2021-08-03 |
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