CN114256805A - Highly integrated intelligent power distribution safety switch circuit - Google Patents
Highly integrated intelligent power distribution safety switch circuit Download PDFInfo
- Publication number
- CN114256805A CN114256805A CN202111564162.4A CN202111564162A CN114256805A CN 114256805 A CN114256805 A CN 114256805A CN 202111564162 A CN202111564162 A CN 202111564162A CN 114256805 A CN114256805 A CN 114256805A
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- Prior art keywords
- power distribution
- isolation
- unit
- intelligent power
- safety switch
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
Abstract
The invention provides a highly integrated intelligent power distribution safety switch circuit, which is characterized in that each part of the intelligent power distribution safety switch circuit is subjected to chip integration design and integration design to form three main chips, namely an isolation control chip, an isolation driving chip and a VDMOS (vertical double-diffused metal oxide semiconductor) tube, and integrated assembly is carried out through a hybrid integrated circuit process; the main circuit isolation control, I2T overcurrent protection, short-circuit protection, over-temperature protection, switch state feedback and trip state feedback of the intelligent power distribution switch are integrated into 2 special chips, the intelligent power distribution safety switch circuit is developed by adopting the special chips and a VDMOS (vertical double-diffused metal oxide semiconductor) tube, the size of the power distribution switch is greatly reduced, the nationwide 0V-100V and 1A-25A intelligent power distribution safety switch series products suitable for aerospace models can be developed, and the circuit size is reduced by more than 1/3 compared with the overseas similar products. The intelligent power distribution safety switch meets the requirements of space navigation intelligent power distribution safety switch on intellectualization, miniaturization and localization.
Description
Technical Field
The invention belongs to the design technology of semiconductor hybrid integrated circuits, and particularly relates to a highly integrated intelligent power distribution safety switch circuit.
Background
The intelligent power distribution is a great development direction of power electronic technology, can realize self-detection and load autonomous management of power distribution equipment, realizes effective isolation and restorability when local faults occur, and improves the intelligent degree of a power distribution system. With the integration and higher intelligence degree of power distribution systems such as satellites and missiles, the development trend of intelligent power distribution is developing towards high power, integration, intelligence and systematization.
Most of intelligent power distribution products in the prior art are large in size and cannot meet the requirements of intellectualization, miniaturization and modularization of power distribution management requirements of systems such as satellites, carriers and missiles.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a highly integrated intelligent power distribution safety switch circuit; the intelligent, miniaturized and modularized requirements of the power distribution management requirements of systems such as satellites, carriers and missiles are met.
The invention is realized by the following technical scheme:
a highly integrated intelligent power distribution safety switch circuit is characterized by comprising an isolation control chip, an isolation driving chip and a VDMOS chip;
the isolation control chip comprises an input isolation control and drive unit, an output buffer unit, a VDD interface and a GN interface;
the isolation driving chip comprises a power supply conversion unit, an isolation driving unit and a protection unit;
one side of the isolation control and drive unit is connected with a CFG interface, an ON/T interface and an OFF interface, and the other side of the isolation control and drive unit is connected with the isolation drive unit through a first isolation transformer;
one side of the output buffer unit is connected with a plurality of status interfaces, and the other side of the output buffer unit is connected with the protection unit through a second isolation transformer;
the power supply conversion unit is respectively connected with the VDD interface, the isolation driving unit and the protection unit;
the protection unit is also respectively connected with the isolation driving unit, the current collecting unit and the VDMOS chip.
Further, the VDMOS chip comprises a power switch tube;
the drain electrode of the power switch tube is connected with the VIN interface, the grid electrode of the power switch tube is connected with the isolation driving unit, and the source electrode of the power switch tube is connected with the current acquisition unit.
Further, the protection unit comprises an I2T protection unit, a short-circuit protection unit and an over-temperature protection unit;
the I2T protection unit is connected with the power supply conversion unit;
the short-circuit protection unit is connected with a source electrode of the power switch tube;
the over-temperature protection unit is connected with the VOUT interface.
Further, the plurality of status interfaces is two.
Furthermore, the isolation control chip, the isolation driving chip and the VDMOS chip are all assembled by adopting a hybrid integrated circuit assembly process.
Furthermore, an isolation control chip, an isolation driving chip and a VDMOS tube bare chip are adopted for assembly.
Further, the first isolation transformer and the second isolation transformer adopt a stacked type on-chip transformer structure and a subsequent metallization process.
Furthermore, the quality grade of the circuit is GJB2438A-2002H grade.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides a highly integrated intelligent power distribution safety switch circuit, which is characterized in that each part of the intelligent power distribution safety switch circuit is subjected to chip integration design and integration design to form three main chips, namely an isolation control chip, an isolation driving chip and a VDMOS (vertical double-diffused metal oxide semiconductor) tube, and integrated assembly is carried out through a hybrid integrated circuit process; the intelligent power distribution safety switch circuit is developed by adopting a special chip and a VDMOS tube, the volume of a power distribution switch is greatly reduced, nationwide 0V-100V and 1A-25A intelligent power distribution safety switch series products suitable for aerospace models can be developed, and the circuit size is reduced by more than 1/3 compared with similar products. The intelligent power distribution safety switch meets the requirements of space navigation intelligent power distribution safety switch on intellectualization, miniaturization and integration.
Drawings
Fig. 1 is a schematic block diagram of a highly integrated intelligent power distribution safety switch circuit according to an embodiment of the present invention.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention provides a highly integrated intelligent power distribution safety switch circuit, which comprises an isolation control chip, an isolation driving chip and a VDMOS chip, wherein the isolation control chip is connected with the isolation driving chip;
the isolation control chip comprises an input isolation control and drive unit, an output buffer unit, a VDD interface and a GN interface;
the isolation driving chip comprises a power supply conversion unit, an isolation driving unit and a protection unit;
one side of the isolation control and drive unit is connected with a CFG interface, an ON/T interface and an OFF interface, and the other side of the isolation control and drive unit is connected with the isolation drive unit through a first isolation transformer;
one side of the output buffer unit is connected with a plurality of status interfaces, and the other side of the output buffer unit is connected with the protection unit through a second isolation transformer; specifically, the number of the status interfaces is two.
The power supply conversion unit is respectively connected with the VDD interface, the isolation driving unit and the protection unit;
the protection unit is also respectively connected with the isolation driving unit, the current acquisition unit and the VDMOS chip;
specifically, the isolation control chip is used for detecting input logic instructions and feedback output of a switch state and a trip state;
the isolation driving chip is used for driving a rear-end high-voltage power tube and protecting a circuit, detecting the real on-off state of the power switch tube and detecting whether the switch tube has an overcurrent or short-circuit state, and transmitting the overcurrent or short-circuit state back to the isolation control chip through the first isolation transformer and the second isolation transformer, and meanwhile, an isolation power supply conversion circuit is integrated inside the isolation driving chip.
The invention provides a preferred embodiment, the VDMOS chip comprises a power switch tube;
specifically, the power switch tube comprises a source electrode, a drain electrode and a grid electrode;
the drain electrode of the power switch tube is connected with the VIN interface, the grid electrode of the power switch tube is connected with the isolation driving unit, and the source electrode of the power switch tube is connected with the current acquisition unit.
Another preferred embodiment of the present invention is that the protection unit includes an I2T protection unit, a short circuit protection unit, and an over-temperature protection unit;
the I2T protection unit is connected with the power supply conversion unit;
the short-circuit protection unit is connected with a source electrode of the power switch tube;
the over-temperature protection unit is connected with the VOUT interface.
The invention provides another preferred embodiment, the isolation control chip and the isolation driving chip are special integrated chips developed, and a highly integrated intelligent power distribution safety switch circuit is developed by adopting an assembly process of the isolation control chip, the isolation driving chip, a VDMOS tube bare new chip and a hybrid integrated circuit.
Compared with an integrated intelligent power distribution safety switch in the prior art, the size of the circuit in the application is reduced by more than 1/3 compared with similar products in foreign countries, and the requirements of intellectualization, miniaturization and localization of the aerospace intelligent power distribution safety switch are met.
The invention provides another preferred embodiment, the first isolation transformer and the second isolation transformer adopt a stacked type on-chip transformer structure, and the subsequent metallization process is realized.
Furthermore, the integrated intelligent power distribution safety switch has the circuit quality grade of GJB2438A-2002H grade,
according to another preferred embodiment of the invention, 4 switch control type intelligent power distribution safety switch circuits can be designed according to the integrated intelligent power distribution safety switch in the application, and the output currents of the series circuits are 5A, 10A and 25A respectively, so that the integrated intelligent power distribution safety switch can be used as a safety switch of a power distribution system with a power supply voltage of 100V or below. The input control and power output of the series circuit are fully isolated, the input control signal can be compatible with pulse and level modes, the short circuit and I2T overcurrent protection can be selectively carried out on the load, and the switch state and the trip state can be fed back in real time. The safety change-over switch can completely replace a fuse, a mechanical breaker and an electromechanical controller as a safety change-over switch of a power distribution system.
The invention provides a highly integrated intelligent power distribution safety switch circuit, which is characterized in that each part of the intelligent power distribution safety switch circuit is subjected to chip integration design and integrated design, and main circuit isolation control, I2T overcurrent protection, short circuit protection, over-temperature protection, switch state feedback and trip state feedback of an intelligent power distribution switch are integrated into 2 special chips which are respectively an isolation control chip and an isolation driving chip. The high-integration solution of the intelligent power distribution switch circuit is formed by three main chips, namely an isolation control chip, an isolation driving chip and a VDMOS (vertical double-diffused metal oxide semiconductor) tube.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A highly integrated intelligent power distribution safety switch circuit is characterized by comprising an isolation control chip, an isolation driving chip and a VDMOS chip;
the isolation control chip comprises an input isolation control and drive unit, an output buffer unit, a VDD interface and a GN interface;
the isolation driving chip comprises a power supply conversion unit, an isolation driving unit and a protection unit;
one side of the isolation control and drive unit is connected with a CFG interface, an ON/T interface and an OFF interface, and the other side of the isolation control and drive unit is connected with the isolation drive unit through a first isolation transformer;
one side of the output buffer unit is connected with a plurality of status interfaces, and the other side of the output buffer unit is connected with the protection unit through a second isolation transformer;
the power supply conversion unit is respectively connected with the VDD interface, the isolation driving unit and the protection unit;
the protection unit is also respectively connected with the isolation driving unit, the current collecting unit and the VDMOS chip.
2. The highly integrated intelligent power distribution safety switch circuit as recited in claim 1, wherein the VDMOS chip comprises a power switch tube;
the drain electrode of the power switch tube is connected with the VIN interface, the grid electrode of the power switch tube is connected with the isolation driving unit, and the source electrode of the power switch tube is connected with the current acquisition unit.
3. The highly integrated intelligent power distribution safety switch circuit according to claim 2, wherein the protection unit comprises an I2T protection unit, a short-circuit protection unit and an over-temperature protection unit;
the I2T protection unit is connected with the power supply conversion unit;
the short-circuit protection unit is connected with a source electrode of the power switch tube;
the over-temperature protection unit is connected with the VOUT interface.
4. The highly integrated intelligent power distribution safety switch circuit as recited in claim 1, wherein the plurality of status interfaces is two.
5. The highly integrated intelligent power distribution safety switch circuit as claimed in claim 1, wherein the isolation control chip, the isolation driving chip and the VDMOS chip are all assembled by a hybrid integrated circuit.
6. The highly integrated intelligent power distribution safety switch circuit as claimed in claim 1, wherein the isolation control chip, the isolation driving chip and the VDMOS die are assembled.
7. The highly integrated intelligent power distribution safety switch circuit according to claim 1, wherein the first isolation transformer and the second isolation transformer adopt a stacked type on-chip transformer structure and a subsequent metallization process.
8. The highly integrated intelligent power distribution safety switch circuit as recited in claim 1, wherein the circuit quality level is GJB2438A-2002H level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111564162.4A CN114256805A (en) | 2021-12-20 | 2021-12-20 | Highly integrated intelligent power distribution safety switch circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111564162.4A CN114256805A (en) | 2021-12-20 | 2021-12-20 | Highly integrated intelligent power distribution safety switch circuit |
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| CN114256805A true CN114256805A (en) | 2022-03-29 |
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| CN202111564162.4A Pending CN114256805A (en) | 2021-12-20 | 2021-12-20 | Highly integrated intelligent power distribution safety switch circuit |
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Citations (7)
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|---|---|---|---|---|
| GB2287143A (en) * | 1994-03-04 | 1995-09-06 | Int Rectifier Corp | Mosgate driver for ballast circuits |
| CN204886740U (en) * | 2015-08-28 | 2015-12-16 | 山东艾诺仪器有限公司 | Hard switch drive circuit of full -bridge contravariant |
| CN105226097A (en) * | 2015-08-21 | 2016-01-06 | 深圳市安派电子有限公司 | Vdmos transistor and its integrated IC, switching circuit |
| CN109286839A (en) * | 2018-09-29 | 2019-01-29 | 深圳开立生物医疗科技股份有限公司 | EDP interface driver method and FPGA main control chip |
| CN110112894A (en) * | 2019-05-27 | 2019-08-09 | 苏州汇川联合动力系统有限公司 | Device for power switching driving circuit and power electronic equipment |
| CN111525502A (en) * | 2020-07-06 | 2020-08-11 | 浙江航芯源集成电路科技有限公司 | Digital reconfigurable micro magnetic isolation solid relay |
| WO2020238306A1 (en) * | 2019-05-30 | 2020-12-03 | 深圳可立克科技股份有限公司 | Dc-ac inverter protection circuit for lithium battery and energy storage device |
-
2021
- 2021-12-20 CN CN202111564162.4A patent/CN114256805A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2287143A (en) * | 1994-03-04 | 1995-09-06 | Int Rectifier Corp | Mosgate driver for ballast circuits |
| CN105226097A (en) * | 2015-08-21 | 2016-01-06 | 深圳市安派电子有限公司 | Vdmos transistor and its integrated IC, switching circuit |
| CN204886740U (en) * | 2015-08-28 | 2015-12-16 | 山东艾诺仪器有限公司 | Hard switch drive circuit of full -bridge contravariant |
| CN109286839A (en) * | 2018-09-29 | 2019-01-29 | 深圳开立生物医疗科技股份有限公司 | EDP interface driver method and FPGA main control chip |
| CN110112894A (en) * | 2019-05-27 | 2019-08-09 | 苏州汇川联合动力系统有限公司 | Device for power switching driving circuit and power electronic equipment |
| WO2020238306A1 (en) * | 2019-05-30 | 2020-12-03 | 深圳可立克科技股份有限公司 | Dc-ac inverter protection circuit for lithium battery and energy storage device |
| CN111525502A (en) * | 2020-07-06 | 2020-08-11 | 浙江航芯源集成电路科技有限公司 | Digital reconfigurable micro magnetic isolation solid relay |
Non-Patent Citations (1)
| Title |
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| 刘小敏: "航天用固态继电器智能参数检测系统设计", 中国优秀硕士学位论文全文数据库工程科技Ⅱ辑 * |
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