CN213817724U - Drive chip and drive system - Google Patents
Drive chip and drive system Download PDFInfo
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- CN213817724U CN213817724U CN202022988345.6U CN202022988345U CN213817724U CN 213817724 U CN213817724 U CN 213817724U CN 202022988345 U CN202022988345 U CN 202022988345U CN 213817724 U CN213817724 U CN 213817724U
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Abstract
The embodiment of the utility model provides a driver chip and actuating system, driver chip includes: the driving circuit is connected with a driving input end and a driving output end of the driving circuit; the driving circuit is used for generating a driving signal based on the input voltage, and the driving output end is used for deriving the driving signal; the first power supply circuit is used for providing a first working voltage; the second power supply circuit is used for providing a second working voltage, and the first working voltage is greater than the second working voltage; the selection circuit is used for selecting the first power supply circuit to be connected to the driving input end or selecting the second power supply circuit to be connected to the driving input end; an embodiment of the utility model provides a driver chip who possesses multiple power device ability of drive.
Description
Technical Field
The utility model relates to a semiconductor device application, in particular to driver chip and actuating system.
Background
A Metal Oxide Semiconductor Field Effect Transistor (MOSFET) has a large parasitic capacitance, and thus requires a large pull-up current and pull-down current to drive the MOSFET.
Because of the characteristics of Gallium Nitride semiconductor Field-effect transistors (GaNFETs), the internal parasitic capacitance of the GaNFETs is small, and thus, smaller pull-up and pull-down currents are required to drive the GaNFETs.
The inventors have found that the driver chip in the related art has only the capability of driving a specific power device, and does not have the capability of driving a plurality of power devices, such as power devices like MOSFETs and ganfets.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a driver chip and actuating system, aim at provide one kind possess the driver chip who drives multiple power device ability.
In order to solve the above technical problem, an embodiment of the present invention provides a driver chip, including: the driving circuit is connected with a driving input end and a driving output end of the driving circuit; the driving circuit is used for generating a driving signal based on the input voltage, and the driving output end is used for deriving the driving signal; the first power supply circuit is used for providing a first working voltage; the second power supply circuit is used for providing a second working voltage, and the first working voltage is greater than the second working voltage; and the selection circuit is used for selecting the first power supply circuit to be connected to the driving input end or selecting the second power supply circuit to be connected to the driving input end.
Compared with the prior art, the first power supply circuit and the second power supply circuit are integrated on the same driving chip and used for providing different working voltages, and the first power supply circuit or the second power supply circuit can be selected by the selection circuit to provide the working voltages for the driving circuit according to requirements, so that the driving capability of integrating various power devices on the same driving chip is realized.
In addition, the selection circuit comprises a first switch circuit, a second switch circuit and a selection sub-circuit; the first power supply circuit is connected to the first switch circuit, and the first switch circuit is connected to the driving input end; the second power supply circuit is connected to the second switch circuit, and the second switch circuit is connected to the driving input end; the selection sub-circuit is connected with the first switch circuit and the second switch circuit, and selects the first power supply circuit to be connected to the driving input end or selects the second power supply circuit to be connected to the driving input end by controlling the on/off of the first switch circuit and the second switch circuit.
In addition, the driving chip further includes: and one end of the control circuit is used for receiving the control signal, the other end of the control circuit is connected with the selection sub-circuit, and the control circuit is used for controlling the connection/disconnection of the first switch circuit and the second switch circuit according to the control signal. The first power supply circuit and the second power supply circuit are selected through the control circuit, so that one of the multiple power supply circuits integrated in the driving chip can be selected conveniently.
In addition, the selection circuit includes a conversion circuit and a selection sub-circuit; one end of the conversion circuit is fixedly connected with the driving input end, and the other end of the conversion circuit is to be connected with the first power supply circuit or the second power supply circuit; the selection sub-circuit is connected with the conversion circuit, is connected to the first power supply circuit or the second power supply circuit through the control conversion circuit, and selects the first power supply circuit to be connected to the driving input end or selects the second power supply circuit to be connected to the driving input end.
In addition, the driving chip further includes: and one end of the control circuit is used for receiving the control signal, the other end of the control circuit is connected with the selection sub-circuit, and the control circuit is used for controlling the conversion circuit to be connected to the first power supply circuit or the second power supply circuit according to the control signal. The first power supply circuit and the second power supply circuit are selected through the control circuit, so that one of the multiple power supply circuits integrated in the driving chip can be selected conveniently.
In addition, the driving chip further includes: a third power supply circuit for providing a third operating voltage, the third operating voltage being different from the first operating voltage and the second operating voltage; the selection circuit is used for selecting the first power supply circuit to be connected to the driving input end, or selecting the second power supply circuit to be connected to the driving input end, or selecting the third power supply circuit to be connected to the driving input end. The driving chip is further integrated with a third power supply circuit, and the third power supply circuit provides a third working voltage different from the first working voltage and the second working voltage, so that the driving capability of integrating more power devices on the driving chip is realized.
In addition, the first power supply circuit at least comprises a first power supply, the first power supply is used for providing a first working voltage, the second power supply circuit at least comprises a second power supply, and the second power supply is used for providing a second working voltage.
The embodiment of the utility model provides a still provide a driving system, include: the driving circuit comprises a first-class transistor, a second-class transistor and the driving chip, wherein the first-class transistor is applied to a first working voltage, and the second-class transistor is applied to a second working voltage; the driving output end of the driving chip is connected with the first-class transistor, a first power supply circuit of the driving chip is connected to the driving input end, and the first power supply circuit is used for providing a first working voltage for the driving circuit of the driving chip; the driving output end of the driving chip is connected with the second type transistor, a second power supply circuit of the driving chip is connected to the driving input end, and the second power supply circuit is used for providing a second working voltage for the driving circuit of the driving chip.
In addition, the driving chip also comprises a control circuit, wherein the control circuit is used for receiving the control signal and selecting the first power supply circuit to be connected to the driving input end or selecting the second power supply circuit to be connected to the driving input end according to the control signal; the control signal is generated based on the connection of the driving output end with the first type transistor or the second type transistor.
In addition, the drive system further includes: a third type transistor applied to a third operating voltage; the driving chip further comprises a third power supply circuit for providing a third working voltage, wherein the third working voltage is different from the first working voltage and the second working voltage; the driving output end of the driving chip is connected with the third type transistor, a third power supply circuit of the driving chip is connected to the driving input end, and the third power supply circuit is used for providing a third working voltage for the driving circuit of the driving chip.
Compared with the prior art, the first power supply circuit and the second power supply circuit are integrated on the same driving chip and used for providing different working voltages, and the first power supply circuit or the second power supply circuit can be selected to provide the working voltages for the driving circuit according to the connected first class transistor and the second class transistor, so that the same driving chip can drive the first class transistor and the second class transistor.
Drawings
One or more embodiments are illustrated by corresponding figures in the drawings, which are not to scale unless specifically noted.
Fig. 1 and fig. 2 are schematic structural diagrams of a driving chip according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a driving chip according to an embodiment of the present invention;
fig. 4 and fig. 5 are schematic structural diagrams of a driving chip according to another embodiment of the present invention;
fig. 6 and fig. 7 are schematic structural diagrams of a driving system according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a driving system according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a driving system according to another embodiment of the present invention.
Detailed Description
Currently, a driver chip only has the capability of driving a specific power device, but not the capability of driving various power devices, such as power devices such as MOSFETs and ganfets.
In order to solve the above problem, an embodiment of the present invention provides a driver chip, including: the driving circuit is connected with a driving input end and a driving output end of the driving circuit; the driving circuit is used for generating a driving signal based on the input voltage, and the driving output end is used for deriving the driving signal; the first power supply circuit is used for providing a first working voltage; the second power supply circuit is used for providing a second working voltage, and the first working voltage is greater than the second working voltage; and the selection circuit is used for selecting the first power supply circuit to be connected to the driving input end or selecting the second power supply circuit to be connected to the driving input end.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in the embodiments of the present invention, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments. The following embodiments are divided for convenience of description, and should not constitute any limitation to the specific implementation manner of the present invention, and the embodiments may be combined with each other and cited without contradiction.
Fig. 1 and fig. 2 are schematic structural diagrams of a driving chip according to an embodiment of the present invention, and fig. 3 is a schematic structural diagram of a driving chip according to an expansion of the embodiment of the present invention; the driving chip provided in this embodiment will be described in detail below with reference to the accompanying drawings, specifically as follows:
referring to fig. 1 and 2, the driving chip 100 includes:
a drive circuit 104, and a drive input 114 and a drive output 124 connected to the drive circuit 104; wherein the driving input 114 is configured to receive an input voltage, the driving circuit 104 is configured to generate a driving signal based on the input voltage, and the driving output 124 is configured to derive the driving signal.
The first power supply circuit 101 is configured to provide a first operating voltage.
The second power supply circuit 102 is configured to provide a second operating voltage, where the first operating voltage is greater than the second operating voltage.
A selection circuit 106 for selecting either the first power supply circuit 101 to be connected to the driving input 114 or the second power supply circuit to be connected to the driving input 114.
In particular, the first power supply circuit 101 is connected to the driving input 114 for providing a first operating voltage to the driving circuit 104, and the second power supply circuit 102 is connected to the driving input 114 for providing a second operating voltage to the driving circuit 104.
Referring to fig. 1, the first power supply circuit 101 is connected to the driving input terminal 114, that is, the first power supply circuit 101 provides a first operating voltage to the driving circuit 104, and the driving circuit 104 generates a driving signal for driving the first type power device based on the first operating voltage; referring to fig. 2, the second power supply circuit 102 is connected to the driving input 114, i.e. the second power supply circuit 102 provides the second operating voltage to the driving circuit 104, and the driving circuit 104 generates the driving signal for driving the second type power device based on the first operating voltage.
In one example, the first type of power device is a Metal Oxide Semiconductor Field Effect Transistor (MOSFET); the second type of power device is a Gallium Nitride semiconductor Field effect Transistor (GaNFET). The parasitic capacitance of the MOSFET is large, so that a large pull-up current and pull-down current are required to drive the MOSFET, and therefore, a driving signal for driving the MOSFET needs to be sent out based on a high operating voltage, generally an operating voltage higher than 10V, that is, when the driving circuit 104 generates a driving signal for driving the MOSFET based on the first operating voltage; the parasitic capacitance of the gan fet is small, and therefore, less pull-up and pull-down current is required to drive the gan fet, and therefore, the driving signal for driving the gan fet needs to be issued based on a lower operating voltage, typically an operating voltage lower than 10V, that is, when the driving circuit 104 generates the driving signal for driving the gan fet based on the second operating voltage.
It should be noted that, in a specific application of the driving chip 100 provided in this embodiment, the selection circuit 106 may select a suitable power supply circuit to provide an operating voltage according to a voltage requirement of a power device to be driven, so that two or more power devices are driven by the same driving chip 100.
In this embodiment, the first power supply circuit 101 at least includes a first power supply, the first power supply is configured to provide a first operating voltage, and the first power supply circuit 101 is configured to provide the first operating voltage to the driving circuit 104; the second power supply circuit 102 comprises at least a second power supply for providing a second operating voltage, the second power supply circuit 102 being configured to provide the second operating voltage to the driver circuit 104.
The present embodiment integrates the first power supply circuit 101 and the second power supply circuit 102 on the same driver chip 100, so that the same driver chip 100 can be used to drive different power devices. In other embodiments, the driving chip 100 further includes: a third supply circuit 103 for providing a third operating voltage, the third operating voltage being different from the first operating voltage and the second operating voltage, a selection circuit 106 for selecting the first supply circuit 101 to be connected to the drive input 114, or selecting the second supply circuit 102 to be connected to the drive input 114, or selecting the third supply circuit 103 to be connected to the drive input 114.
Referring to fig. 3, the third power supply circuit 103 is connected to the driving input 114, i.e. the third power supply circuit 103 provides a third operating voltage to the driving circuit 104, and the driving circuit 104 generates a driving signal for driving the third type power device based on the third operating voltage.
In other embodiments, a plurality of power supply circuits such as the fourth power supply circuit and the fifth power supply circuit may be continuously integrated in the driving chip, and the power supply circuits are respectively used for driving different power devices. The present embodiment is only illustrated by integrating two power supply circuits and three power supply circuits in the driving chip 100, and the number of the power supply circuits integrated in the driving chip 100 is not limited, and when more than four power supply circuits are integrated in the driving chip 100, those skilled in the art should understand that the scheme belongs to the protection scope of the present invention.
Compared with the related art, the first power supply circuit and the second power supply circuit are integrated on the same driving chip and used for providing different working voltages, and the first power supply circuit or the second power supply circuit can be selected by the selection circuit to provide the working voltages for the driving circuit according to requirements, so that the driving capability of integrating various power devices on the same driving chip is realized.
It should be noted that, all the modules involved in this embodiment are logic modules, and in practical application, one logic unit may be one physical unit, may also be a part of one physical unit, and may also be implemented by a combination of multiple physical units. In addition, in order to highlight the innovative part of the present invention, the unit which is not closely related to the solution of the technical problem proposed by the present invention is not introduced in the present embodiment, but this does not indicate that there are no other units in the present embodiment.
The utility model discloses still another embodiment provides a driver chip, and it is different from the preceding embodiment that this embodiment controls the selection circuit through control circuit and selects first supply circuit or second supply circuit to supply power for drive circuit.
Fig. 4 and fig. 5 are schematic structural diagrams of a driving chip according to another embodiment of the present invention, and the driving chip provided in this embodiment will be described in detail below with reference to the drawings, and the same or corresponding parts as those in the previous embodiment will not be described again below.
Referring to fig. 4 and 5, the driving chip 100 includes:
a driving circuit 104, and a driving input terminal 114 and a driving output terminal 124 connected to the driving circuit 104, wherein the driving input terminal 114 is configured to receive an input voltage, the driving circuit 104 is configured to generate a driving signal based on the input voltage, and the driving output terminal 124 is configured to derive the driving signal.
The first power supply circuit 101 is configured to provide a first operating voltage.
The second power supply circuit 102 is configured to provide a second operating voltage, where the first operating voltage is greater than the second operating voltage.
A selection circuit 106 for selecting either the first power supply circuit 101 to be connected to the driving input 114 or the second power supply circuit to be connected to the driving input 114.
In particular, the first power supply circuit 101 is connected to the driving input 114 for providing a first operating voltage to the driving circuit 104, and the second power supply circuit 102 is connected to the driving input 114 for providing a second operating voltage to the driving circuit 104.
In one example, referring to fig. 4, the selection circuit 106 includes: a conversion circuit 215 and a selection sub-circuit 225. One end of the conversion unit 215 is fixedly connected to the driving input terminal 114, and the other end of the conversion circuit 215 is to be connected to the first power supply circuit 101 or the second power supply circuit 102. The selection sub-circuit 225 is connected to the switching circuit 215, and is connected to the first power supply circuit 101 or the second power supply circuit 102 by controlling the switching circuit 215, and selects the first power supply circuit 101 to be connected to the driving input terminal 114 or selects the second power supply circuit 102 to be connected to the driving input terminal 114.
Further, the driving chip 100 further includes: and a control circuit 205, one end of which is used for receiving a control signal, and the other end of which is connected to the selection sub-circuit 225, wherein the control circuit 205 is used for controlling the conversion circuit 215 to be connected to the first power supply circuit 101 or the second power supply circuit 102 according to the control signal.
The control signal is an adjustment signal sent by a relevant worker to the driving chip 100, and the driving chip 100 selects the first power supply circuit 101 or selects the second power supply circuit 102 to supply power to the driving circuit 104 according to the received control signal, so that the driving circuit 104 operates under the first operating voltage or the driving circuit 104 operates under the second operating voltage, and the driving signal sent by the driving circuit 104 can drive different power devices.
Specifically, the conversion circuit 215 may be implemented by a single-pole double-position switch, and when the control signal received by the control circuit 205 is used to indicate that the conversion circuit 215 is connected to the first power supply circuit 101, the conversion circuit 215 switches the switch to the first power supply circuit 101, so that the driving circuit 104 operates in the environment of the first operating voltage; when the control signal received by the control circuit 205 is used to instruct the switching circuit 215 to connect to the second power supply circuit 102, the switching circuit 215 switches the switch to the second power supply circuit 102, so that the driving circuit 104 operates at the second operating voltage.
In another example, referring to fig. 5, the selection circuit 106 includes: a first switch circuit 315, a second switch circuit 325, and a selection sub-circuit 335.
The first power supply circuit 101 is connected to the first switch circuit 315, and the first switch circuit 315 is connected to the driving input terminal 114; the second power supply circuit 102 is connected to the second switch circuit 325, and the second switch circuit 325 is connected to the driving input terminal 114; the selection sub-circuit 335 is connected to the first switch circuit 315 and the second switch circuit 325, and selects the first power supply circuit 101 to be connected to the drive input terminal 114 or the second power supply circuit 102 to be connected to the drive input terminal 114 by controlling on/off of the first switch circuit 315 and the second switch circuit 325.
Further, the driving chip 100 further includes: and a control circuit 205, one end of which is used for receiving a control signal, and the other end of which is connected with the selection sub-circuit 335, wherein the control circuit 205 is used for controlling the on/off of the first switch circuit 315 and the second switch circuit 325 according to the control signal.
The control signal is an adjustment signal sent by a relevant worker to the driving chip 100, and the driving chip 100 selects the first power supply circuit 101 or selects the second power supply circuit 102 to supply power to the driving circuit 104 according to the received control signal, so that the driving circuit 104 operates under the first operating voltage or the driving circuit 104 operates under the second operating voltage, and the driving signal sent by the driving circuit 104 can drive different power devices.
Specifically, the first switch circuit 315 and the second switch circuit 325 may be implemented by switches, and when the control signal received by the control circuit 205 is used to instruct the first switch circuit 315 to be turned on, the switch of the first switch circuit 315 is closed, so that the driving circuit 104 operates in the environment of the first operating voltage; when the control signal received by the control circuit 205 is used to instruct the second switch circuit 325 to be turned on, the switch of the second switch circuit 325 is closed, so that the driving circuit 104 operates at the second operating voltage.
Compared with the previous embodiment, the selection of the first power supply circuit and the second power supply circuit is realized by controlling the selection circuit through the control circuit, so that one of a plurality of power supply circuits integrated in the driving chip is convenient to select.
It should be noted that, all the modules involved in this embodiment are logic modules, and in practical application, one logic unit may be one physical unit, may also be a part of one physical unit, and may also be implemented by a combination of multiple physical units. In addition, in order to highlight the innovative part of the present invention, the unit which is not closely related to the solution of the technical problem proposed by the present invention is not introduced in the present embodiment, but this does not indicate that there are no other units in the present embodiment.
Since the foregoing embodiments correspond to the present embodiment, the present embodiment can be implemented in cooperation with the foregoing embodiments. Related technical details mentioned in the foregoing embodiments are still valid in this embodiment, and the technical effects that can be achieved in the foregoing embodiments can also be achieved in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the foregoing embodiments.
An embodiment of the utility model provides a driving system, include: the driving circuit comprises a first-class transistor, a second-class transistor and the driving chip, wherein the first-class transistor is applied to a first working voltage, and the second-class transistor is applied to a second working voltage; the driving output end of the driving chip is connected with the first-class transistor, a first power supply circuit of the driving chip is connected to the driving input end, and the first power supply circuit is used for providing a first working voltage for the driving circuit of the driving chip; the driving output end of the driving chip is connected with the second type transistor, a second power supply circuit of the driving chip is connected to the driving input end, and the second power supply circuit is used for providing a second working voltage for the driving circuit of the driving chip.
Fig. 6 and fig. 7 are schematic structural diagrams of a driving system provided by an embodiment of the present invention, and fig. 8 is a schematic structural diagram of a driving system extended by an embodiment of the present invention, and the following will explain in detail the driving system provided by this embodiment with reference to the accompanying drawings, specifically as follows:
referring to fig. 6 and 7, a driving system includes:
the first-type transistor 200, the second-type transistor 300 and the driving chip 100 provided by the above embodiment, wherein the first-type transistor 200 is applied to a first operating voltage, and the second-type transistor 300 is applied to a second operating voltage.
In one example, the first type of Transistor is a Metal Oxide Semiconductor Field Effect Transistor (MOSFET), and a parasitic capacitance of the MOSFET is large, so that a large pull-up current and a large pull-down current are required to drive the MOSFET, and therefore, a driving signal for driving the MOSFET needs to be sent based on a high operating voltage, which is generally higher than 10V; the second type of Transistor is a Gallium Nitride semiconductor Field effect Transistor (gan fet), and the parasitic capacitance of the gan fet is small, so that a small pull-up current and pull-down current are required to drive the gan fet, and therefore, a driving signal for driving the gan fet needs to be sent out based on a low operating voltage, which is generally an operating voltage lower than 10V.
The driving output terminal 124 of the driving chip 100 is connected to the first type transistor 200, the first power supply circuit 101 of the driving chip 100 is connected to the driving input terminal 114, and the first power supply circuit 101 is configured to provide a first operating voltage for the driving circuit 104 of the driving chip 100.
Specifically, referring to fig. 6, when the driving output terminal 124 of the driving chip 100 is connected to the first type transistor 200, the driving chip 100 needs to send out a driving signal based on a higher operating voltage, and at this time, the driving circuit 104 needs to operate at the first operating voltage, that is, the first operating voltage is provided to the driving circuit 104 through the first power supply circuit 101.
The driving output 124 of the driving chip 100 is connected to the second type transistor 300, the second power supply circuit 102 of the driving chip 100 is connected to the driving input 114, and the second power supply circuit 102 is configured to provide a second operating voltage for the driving circuit 104 of the driving chip 100.
Specifically, referring to fig. 7, when the driving output terminal 124 of the driving chip 100 is connected to the second type transistor 300, the driving chip 100 needs to send out a driving signal based on a higher operating voltage, and at this time, the driving circuit 104 needs to operate at the second operating voltage, that is, the second operating voltage is provided to the driving circuit 104 through the second power supply circuit 102.
In other embodiments, referring to fig. 8, the driving system further includes: the third type transistor 400 is applied to a third operating voltage, and the driving chip 100 further includes a third power supply circuit 103 for providing the third operating voltage, where the third operating voltage is different from the first operating voltage and the second operating voltage; the driving output terminal 124 of the driving chip 100 is connected to the third type transistor 400, the third power supply circuit 103 of the driving chip 100 is connected to the driving input terminal 114, and the third power supply circuit 103 is configured to provide a third operating voltage for the driving circuit 104 of the driving chip 100.
In other embodiments, a plurality of power supply circuits such as the fourth power supply circuit and the fifth power supply circuit may be continuously integrated in the driving chip, and the power supply circuits are respectively used for driving a plurality of transistors such as the fourth type transistor and the fifth type transistor. The present embodiment is only illustrated by taking the driving system for supplying power to two types of transistors or three types of transistors as an example, and does not limit the driving system of the present embodiment.
Compared with the related art, the first power supply circuit and the second power supply circuit are integrated on the same driving chip and used for providing different working voltages, and the first power supply circuit or the second power supply circuit can be selected to provide the working voltages for the driving circuit according to the connected first class transistor and the second class transistor, so that the first class transistor and the second class transistor can be driven by the same driving chip.
It should be noted that, all the modules involved in this embodiment are logic modules, and in practical application, one logic unit may be one physical unit, may also be a part of one physical unit, and may also be implemented by a combination of multiple physical units. In addition, in order to highlight the innovative part of the present invention, the unit which is not closely related to the solution of the technical problem proposed by the present invention is not introduced in the present embodiment, but this does not indicate that there are no other units in the present embodiment.
The present invention provides a driving system, which is different from the previous embodiment in that the present embodiment controls the selection circuit to select the first power supply circuit or the second power supply circuit to supply power to the driving circuit through the control circuit.
Fig. 9 is a schematic structural diagram of a driving system according to another embodiment of the present invention, and the driving system provided in this embodiment will be described in detail below with reference to the accompanying drawings, and the same or corresponding parts as those in the previous embodiment will not be described again below.
Referring to fig. 9, a drive system includes:
the first-type transistor 200, the second-type transistor 300 and the driving chip 100 provided by the above embodiment, wherein the first-type transistor 200 is applied to a first operating voltage, and the second-type transistor 300 is applied to a second operating voltage.
The driving output end 124 of the driving chip 100 is connected to the first type transistor 200, the first power supply circuit 101 of the driving chip 100 is connected to the driving input end 114, and the first power supply circuit 101 is configured to provide a first working voltage for the driving circuit 104 of the driving chip 100; the driving output 124 of the driving chip 100 is connected to the second type transistor 300, the second power supply circuit 102 of the driving chip 100 is connected to the driving input 114, and the second power supply circuit 102 is configured to provide a second operating voltage for the driving circuit 104 of the driving chip 100.
The drive system further includes: the control circuit 205, the control circuit 205 is configured to receive the control signal, and select the first power supply circuit 101 to be connected to the driving input terminal 114 or select the second power supply circuit 102 to be connected to the driving input terminal 114 according to the control signal; the control signal is generated based on the connection of the drive output 124 to either the first-type transistor 200 or the second-type transistor 300.
The control signal is an adjustment signal sent by a related worker according to the connected first-type transistor 200 or second-type transistor 300 to the driving chip 100, and the driving chip 100 selects the first power supply circuit 101 or selects the second power supply circuit 102 to supply power to the driving circuit 104 according to the received control signal, so that the driving circuit 104 operates at the first operating voltage or the driving circuit 104 operates at the second operating voltage, and the driving signal sent by the driving circuit 104 can drive the first-type transistor 200 or second-type transistor 300.
Compared with the previous embodiment, the selection of the first power supply circuit and the second power supply circuit is realized by controlling the selection circuit through the control circuit, so that one of a plurality of power supply circuits integrated in the driving chip is convenient to select.
It should be noted that, all the modules involved in this embodiment are logic modules, and in practical application, one logic unit may be one physical unit, may also be a part of one physical unit, and may also be implemented by a combination of multiple physical units. In addition, in order to highlight the innovative part of the present invention, the unit which is not closely related to the solution of the technical problem proposed by the present invention is not introduced in the present embodiment, but this does not indicate that there are no other units in the present embodiment.
Since the foregoing embodiments correspond to the present embodiment, the present embodiment can be implemented in cooperation with the foregoing embodiments. Related technical details mentioned in the foregoing embodiments are still valid in this embodiment, and the technical effects that can be achieved in the foregoing embodiments can also be achieved in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the foregoing embodiments.
It will be understood by those skilled in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and detail may be made therein without departing from the spirit and scope of the invention in practice.
Claims (10)
1. A driver chip, comprising:
the driving circuit is connected with a driving input end and a driving output end of the driving circuit;
the driving input end is used for receiving an input voltage, the driving circuit is used for generating a driving signal based on the input voltage, and the driving output end is used for deriving the driving signal;
the first power supply circuit is used for providing a first working voltage;
the second power supply circuit is used for providing a second working voltage, and the first working voltage is greater than the second working voltage;
and the selection circuit is used for selecting the first power supply circuit to be connected to the driving input end or selecting the second power supply circuit to be connected to the driving input end.
2. The driving chip of claim 1, wherein the selection circuit comprises a first switch circuit, a second switch circuit, and a selection sub-circuit;
the first power supply circuit is connected to the first switch circuit, and the first switch circuit is connected to the driving input end;
the second power supply circuit is connected to the second switching circuit, and the second switching circuit is connected to the driving input end;
the selection sub-circuit is connected with the first switch circuit and the second switch circuit, and the first power supply circuit is selected to be connected to the driving input end or the second power supply circuit is selected to be connected to the driving input end by controlling the on/off of the first switch circuit and the second switch circuit.
3. The driver chip of claim 2, further comprising: and one end of the control circuit is used for receiving a control signal, the other end of the control circuit is connected with the selection sub-circuit, and the control circuit is used for controlling the connection/disconnection of the first switch circuit and the second switch circuit according to the control signal.
4. The driver chip of claim 1, wherein the selection circuit comprises a conversion circuit and a selection sub-circuit;
one end of the conversion circuit is fixedly connected with the driving input end, and the other end of the conversion circuit is to be connected with the first power supply circuit or the second power supply circuit;
the selection sub-circuit is connected with the conversion circuit, and is connected with the first power supply circuit or the second power supply circuit by controlling the conversion circuit, so that the first power supply circuit is selected to be connected to the driving input end, or the second power supply circuit is selected to be connected to the driving input end.
5. The driver chip of claim 4, further comprising: and one end of the control circuit is used for receiving a control signal, the other end of the control circuit is connected with the selection sub-circuit, and the control circuit is used for controlling the conversion circuit to be connected to the first power supply circuit or the second power supply circuit according to the control signal.
6. The driver chip of claim 1, further comprising:
a third power supply circuit for providing a third operating voltage, the third operating voltage being different from the first operating voltage and the second operating voltage;
the selection circuit is used for selecting the first power supply circuit to be connected to the driving input end, selecting the second power supply circuit to be connected to the driving input end, or selecting the third power supply circuit to be connected to the driving input end.
7. The driver chip of claim 1, wherein the first power supply circuit comprises at least a first power supply for providing the first operating voltage, and the second power supply circuit comprises at least a second power supply for providing the second operating voltage.
8. A drive system, comprising:
the driving chip of claim 1, wherein the first type of transistor is applied to a first operating voltage, and the second type of transistor is applied to a second operating voltage;
the driving output end of the driving chip is connected with the first class transistor, a first power supply circuit of the driving chip is connected to the driving input end, and the first power supply circuit is used for providing a first working voltage for the driving circuit of the driving chip;
the driving output end of the driving chip is connected with the second type transistor, a second power supply circuit of the driving chip is connected to the driving input end, and the second power supply circuit is used for providing a second working voltage for the driving circuit of the driving chip.
9. The drive system of claim 8, comprising:
the driving chip further comprises a control circuit, wherein the control circuit is used for receiving a control signal and selecting the first power supply circuit to be connected to the driving input end or selecting the second power supply circuit to be connected to the driving input end according to the control signal;
the control signal is generated based on the connection of the driving output end with the first-class transistor or the second-class transistor.
10. The drive system of claim 8, further comprising:
a third type transistor applied to a third operating voltage;
the driving chip further comprises a third power supply circuit for providing a third working voltage, wherein the third working voltage is different from the first working voltage and the second working voltage;
the driving output end of the driving chip is connected with the third type transistor, a third power supply circuit of the driving chip is connected to the driving input end, and the third power supply circuit is used for providing a third working voltage for the driving circuit of the driving chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022988345.6U CN213817724U (en) | 2020-12-10 | 2020-12-10 | Drive chip and drive system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022988345.6U CN213817724U (en) | 2020-12-10 | 2020-12-10 | Drive chip and drive system |
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| CN213817724U true CN213817724U (en) | 2021-07-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112531675A (en) * | 2020-12-10 | 2021-03-19 | 基合半导体（宁波）有限公司 | Drive chip and drive system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112531675A (en) * | 2020-12-10 | 2021-03-19 | 基合半导体（宁波）有限公司 | Drive chip and drive system |
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