CN204906234U - Brushless motor drive module - Google Patents
Brushless motor drive module Download PDFInfo
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- CN204906234U CN204906234U CN201520619340.2U CN201520619340U CN204906234U CN 204906234 U CN204906234 U CN 204906234U CN 201520619340 U CN201520619340 U CN 201520619340U CN 204906234 U CN204906234 U CN 204906234U
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- brushless motor
- power
- motor driver
- driver module
- bridge
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Abstract
The utility model discloses a brushless motor drive module, aim at: satisfy the user to the requirement of driver power, improved circuit's reliability grade, the technical scheme who adopts is: including three bridge arm drive circuit under bridge arm drive circuit and the three routes on the road, go up bridge arm drive circuit and time bridge arm drive circuit all including bridge driver, three -phase power bridge and the power tube connected in order, the bridge driver be isolated form drive circuit, the during operation need provide the four ways and keep apart the power, the signal passes through the optical coupling isolation input, three -phase power bridge all be provided with independent gate drive resistance, every VDMOS union coupling a to power tube including two each other parallelly connected VDMOS pipes, the grid of every VDMOS pipe.
Description
Technical field
The utility model relates to hybrid semiconductor integrated circuit, is specifically related to a kind of brushless motor driver module for aircraft cooling system.
Background technology
High-power brushless motor drive module relies on the feature of its high-performance, high reliability and miniaturization, and the design of system is more simplified, the low system of a step-down of going forward side by side design and develop cost, shorten the Time To Market of product, have broad application prospects.
Existing technical grade driver generally adopts plastic packaging form, is difficult to the high reliability request meeting military domain, and instructions for use in the presence of a harsh environment.
Along with the extensive use of 270V busbar voltage system, traditional military brushless motor driver module is difficult to meet existing system requirements, simultaneously traditional driver, by the restriction of power tube power, is difficult to meet the requirement growing to power of military driver, and caloric value is larger relatively.In recent years along with the high speed development of space flight and aviation cause, more and more higher requirement is proposed to motor driver power.System is in the urgent need to more powerful driver.
Summary of the invention
In order to solve the problems of the prior art, the utility model proposes and a kind ofly can meet the requirement of user to actuator power, the brushless motor driver module that circuit reliability grade is high.
In order to realize above object, the technical scheme that the utility model adopts is: to comprise on three tunnels brachium pontis drive circuit under brachium pontis drive circuit and three tunnels, upper brachium pontis drive circuit and lower brachium pontis drive circuit include the bridge circuit driver device, three phase power bridge and the power tube that are connected in turn, described bridge circuit driver device is isolated form drive circuit, need provide four road insulating power supplies during work, signal is inputted by light-coupled isolation; Described three phase power bridge comprises two VDMOS pipe (or multiple VDMOS manages) parallel with one another, and the grid of each VDMOS pipe is provided with independently raster data model resistance.
The grid of described each VDMOS pipe is all connected with TVS pipe.
Described per road and bridge road drivers is provided with RC filter network, and is provided with power filtering capacitor between power supply and ground.
Described raster data model resistance is all parallel with diode and resistor network.
Temperature sensor is provided with in described brushless motor driver module.
Described temperature sensor adopts 5k film sampling resistor, and precision is less than 0.1%, and temperature coefficient is less than 50ppm.
Described brushless motor driver module is integrated to be arranged on DBC substrate.
Current-limiting resistance is provided with in described upper brachium pontis drive circuit.
It is the high voltage power pipe of 600V that described VDMOS pipe adopts withstand voltage.
Described brushless motor driver module is provided with the shell bottom plate that material is disperse aluminum bronze, and the power section pin of shell bottom plate is the cylinder of diameter 2mm, and peak value overcurrent capability is 80A, and insulator adopts ceramic insulator.
Compared with prior art, three phase power bridge of the present utility model comprises two VDMOS pipes parallel with one another, two-tube parallel connection is adopted to expand Flow Technique, can be multiplied when power chip power output is limited the power output of driver, and drive resistance to eliminate the self-oscillation of grid by independent gates, by thick film technology and laser tone pitch Technology design raster data model resistance, ensure the consistency of VDMOS pipe action, prevent electric current from distributing the problem of the uneven reliability reduction caused, ensure that the stability of whole circuit.The utility model adopts two-tube parallel connection to expand Flow Technique and high density hybrid integrated layout design, when existing power chip power output is limited, the requirement of user to actuator power can be met, simultaneously by hybrid integrated encapsulation technology, circuit reliability grade reaches H level, have the advantages that volume is little, reliability is high, have broad application prospects in military high busbar voltage Mechatronic Systems; And the requirement of Aviation ElctroMechanical system to high-power, small size, the reliability and stability of driver can be met.
Further, the grid of VDMOS pipe arranges TVS pipe, thus the phenomenon preventing grid overvoltage to cause VDMOS pipe to burn, improve stability and the reliability of whole circuit.
Further, per road and bridge road driver RC filter network is all set, between power supply and ground, power filtering capacitor is set, prevent external interference Shi Qiao road produce misoperation, further ensure the stability of circuit.
Further, the turn-off speed of VDMOS pipe can be accelerated on raster data model resistance all and be connected to diode and resistor network, reduce switching loss.
Further, the temperature of circuit can be reacted by set temperature transducer, and adopt special temperature survey chip, have precision high, the feature of good stability, temperature sensor adopts film sampling resistor, compared to thick-film resistor, Thin film resistive temperature coefficient is little, stable performance, reliability are high, and temperature sensor chip is directly bonded on DBC substrate, more can reflect the real junction temperature of chip really.
Further, motor driver will produce a large amount of heats in the course of the work, and due to output current large, operating voltage is high, to the insulating properties of shell, the overcurrent capability of pin, the thermal resistance of shell has very high requirement, and the utility model shell bottom plate material used is disperse aluminum bronze, and thermal resistance is low, thermal conductivity is good, ensure that module can bear high-magnitude vibration or impact condition.Power section pin is the cylinder of diameter 2mm, peak value overcurrent capability is up to 80A, the power drive requirement of most of motor can be met, insulator adopts ceramic insulator, intensity, toughness are all good than glass insulator, dielectric strength is high, and shell packing forms adopts Parallel Seam Sealing Technology, and air-tightness is good.
Accompanying drawing explanation
Fig. 1 is the utility model circuit theory diagrams;
Fig. 2 is circuit pinouts of the present utility model.
Embodiment
See Fig. 1, the utility model to comprise on three tunnels brachium pontis drive circuit under brachium pontis drive circuit and three tunnels, upper brachium pontis drive circuit and lower brachium pontis drive circuit include the bridge circuit driver device, three phase power bridge and the power tube that are connected in turn, bridge circuit driver device is isolated form drive circuit, need provide four road insulating power supplies during work, signal is inputted by light-coupled isolation; Described three phase power bridge comprises two VDMOS pipes parallel with one another, it is the high voltage power pipe of 600V that VDMOS pipe adopts withstand voltage, the grid of each VDMOS pipe is provided with independently raster data model resistance, the grid of each VDMOS pipe is all connected with TVS pipe, and each VDMOS pipe is connected to a power tube.Per road and bridge road drivers is provided with RC filter network, and is provided with power filtering capacitor between power supply and ground.Raster data model resistance is all parallel with diode and resistor network.Be provided with current-limiting resistance in upper brachium pontis drive circuit, the input of bridge circuit driver device is provided with open collector pull-up resistor.Be provided with temperature sensor in brushless motor driver module, temperature sensor adopts 5k film sampling resistor, and precision is less than 0.1%, and temperature coefficient is less than 50ppm, and brushless motor driver module is integrated to be arranged on DBC substrate.Brushless motor driver module is provided with the shell bottom plate that material is disperse aluminum bronze, and the power section pin of shell bottom plate is the cylinder of diameter 2mm, and peak value overcurrent capability is 80A, and insulator adopts ceramic insulator.
The utility model adopts thick film technology to carry out high density hybrid integrated cloth version to circuit, adopts two-tube parallel connection to expand Flow Technique, the power output of the driver that can be multiplied when existing power chip power output is limited.Devise high-power shell according to the actual requirements, meet the requirement of high power device to heat radiation, built-in temperature sensor circuit, can Real-Time Monitoring circuit shell temperature, avoids excess temperature to damage.
Flow Technique and Anti-Jamming Technique are expanded in two-tube parallel connection: increase driving power by two-tube parallel technology, and the self-oscillation of grid is eliminated by the design of independent gate resistance, by thick film technology and laser tone pitch Technology design raster data model resistance, ensure the consistency of VDMOS pipe action, prevent electric current from distributing the uneven reliability caused and reduce.Gate design TVS pipe, prevents grid overvoltage from causing VDMOS pipe to burn.Adopt thick film technology to carry out layout design simultaneously, in the process of carrying out layout design and pin arrangement, take into full account the mutual interference of Liao Qiao road in switching process, rational deployment is carried out to domain, reduce the misoperation disturbed and circuit is produced to greatest extent, make module work reliable and stable.
High-power shelling machine: motor driver will produce a large amount of heats in the course of the work, and due to output current large, operating voltage is high, and to the insulating properties of shell, the overcurrent capability of pin, the thermal resistance of shell has very high requirement.This module shell bottom plate material used is disperse aluminum bronze, and base plate thickness is 3mm, and thermal resistance is low, and thermal conductivity is good, and mechanical strength is high, ensure that module can bear high-magnitude vibration or impact condition.Power section pin is the cylinder of diameter 2mm, and peak value overcurrent capability, up to 80A, can meet the power drive requirement of most of motor.Insulator adopts ceramic insulator, and intensity, toughness are all good than glass insulator, and dielectric strength is high, and shell packing forms adopts parallel seam welding technique, and air-tightness is good.
High density hybrid integrated domain manufactures: when circuit design, VDMOS drive part adopts two-tube Parallel Design, the existing power chip basis purchased increases driving power by expansion stream in parallel design, meets the requirement of user to Great Power Driver; Simultaneously compared with traditional PCB technology, the outstanding feature of hybrid integrated encapsulating structure is that volume is little, wiring density is large; Bridge circuit driver part substrate adopts DBC substrate, and high-power V DMOS chips welding on DBC substrate, is reduced the voidage of welding, reduces thermal resistance by employing vacuum brazing technique to greatest extent.Temperature sensor adopts special temperature survey chip, has precision high, the feature of good stability.Temperature sensor sampling resistor, adopts film resistor, compared to thick-film resistor, Thin film resistive temperature coefficient is little, stable performance, reliability be high, and temperature sensor chip is directly bonded on DBC substrate, more can reflect the real junction temperature of chip really.
Fig. 1 is brushless motor driver module schematic diagram, and this inside circuit forms primarily of bridge circuit driver device, three phase power bridge and temperature sensor chip.Every road driver is all added with RC filter network, is added with power filtering capacitor between power supply and ground, prevents external interference Shi Qiao road from producing misoperation., accelerate the turn-off speed of VDMOS on the raster data model resistance of the VDMOS in three phase inverter bridge all and have diode, resistor network, reduce switching loss.It is the high voltage VDMOS of 600V that power tube adopts withstand voltage, can under aviation 270V busbar voltage reliably working, and expand Flow Technique increase power output by parallel.Temperature sensor sampling resistance adopts 5k film resistor, and precision is less than 0.1%, and temperature coefficient is less than 50ppm.Temperature signal exports with temperature linearity change, and slope is 5mV/ DEG C. and this driver is isolated form drive circuit, and need provide four road insulating power supplies during work, signal is inputted by light-coupled isolation.
Fig. 2 is outer pin function figure of the present utility model, and the overall dimension of this circuit is 66mm × 58mm, and its profile area is only 1/10th of PCB technology, and weight only has 1/5th of discrete device.Each outer pin concrete function is as shown in the table:
| Sequence number | Symbol | Function | Sequence number | Symbol | Function |
| 1 | V1GND | Bridge ground in A phase | 12 | 15V-V3 | Bridge power supply in C phase |
| 2 | 15V-V1 | Bridge power supply in A phase | 13 | VinC_up | Bridge input in C phase |
| 3 | VinA_up | Bridge input in A phase | 14 | V4GND | The lower bridge input of C phase |
| 4 | VinA_down | The lower bridge input of A phase | 15 | VinC_down | Lower bridge ground |
| 5 | V2GND | Bridge ground in B phase | 16 | Vo(T) | Temperature sensor exports |
| 6 | 15V-V2 | Bridge power supply in B phase | 17 | 270V-GND | Power Groud |
| 7 | VinB_up | Bridge input in B phase | 18 | OUT-C | C phase exports |
| 8 | V4GND | Lower bridge ground | 19 | OUT-B | B phase exports |
| 9 | VinB_down | The lower bridge input of B phase | 20 | OUT-A | A phase exports |
| 10 | 15V-V4 | Lower bridge power supply | 21 | 270V-V DD | Power driving power supply |
| 11 | V3GND | Bridge ground in C phase |
By finding out above, the utility model adopts two-tube parallel connection to expand Flow Technique and high density hybrid integrated layout design, when existing power chip power output is limited, the requirement of user to actuator power can be met, simultaneously by hybrid integrated encapsulation technology, circuit reliability grade reaches H level, has the advantages that volume is little, reliability is high, has broad application prospects in military high busbar voltage Mechatronic Systems; And the requirement of Aviation ElctroMechanical system to high-power, small size, the reliability and stability of driver can be met.
Claims (10)
1. a brushless motor driver module, it is characterized in that: to comprise on three tunnels brachium pontis drive circuit under brachium pontis drive circuit and three tunnels, upper brachium pontis drive circuit and lower brachium pontis drive circuit include the bridge circuit driver device, three phase power bridge and the power tube that are connected in turn, described bridge circuit driver device is isolated form drive circuit, need provide four road insulating power supplies during work, signal is inputted by light-coupled isolation; Described three phase power bridge comprises two VDMOS pipes parallel with one another, and the grid of each VDMOS pipe is provided with independently raster data model resistance.
2. a kind of brushless motor driver module according to claim 1, is characterized in that: the grid of described each VDMOS pipe is all connected with TVS pipe.
3. a kind of brushless motor driver module according to claim 2, is characterized in that: described road driver prime of per road and bridge is provided with RC filter network, and is provided with power filtering capacitor between power supply and ground.
4. a kind of brushless motor driver module according to claim 3, is characterized in that: described raster data model resistance is all parallel with diode and resistor network.
5. a kind of brushless motor driver module according to claim 1, is characterized in that: be provided with temperature sensor in described brushless motor driver module.
6. a kind of brushless motor driver module according to claim 5, is characterized in that: described temperature sensor adopts 5k film sampling resistor, and precision is less than 0.1%, and temperature coefficient is less than 50ppm.
7. a kind of brushless motor driver module according to claim 6, is characterized in that: described brushless motor driver module is integrated to be arranged on DBC substrate.
8. a kind of brushless motor driver module according to any one of claim 1-7, is characterized in that: be provided with current-limiting resistance in described upper brachium pontis drive circuit.
9. a kind of brushless motor driver module according to any one of claim 1-7, is characterized in that: described VDMOS pipe adopts the withstand voltage high voltage power pipe for 600V.
10. a kind of brushless motor driver module according to any one of claim 1-7, it is characterized in that: described brushless motor driver module is provided with the shell bottom plate that material is disperse aluminum bronze, the power section pin of shell bottom plate is the cylinder of diameter 2mm, peak value overcurrent capability is 80A, and insulator adopts ceramic insulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520619340.2U CN204906234U (en) | 2015-08-17 | 2015-08-17 | Brushless motor drive module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520619340.2U CN204906234U (en) | 2015-08-17 | 2015-08-17 | Brushless motor drive module |
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| CN204906234U true CN204906234U (en) | 2015-12-23 |
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| CN201520619340.2U Active CN204906234U (en) | 2015-08-17 | 2015-08-17 | Brushless motor drive module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111650516A (en) * | 2020-07-08 | 2020-09-11 | 湖南银河天涛科技有限公司 | Motor simulation device |
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- 2015-08-17 CN CN201520619340.2U patent/CN204906234U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111650516A (en) * | 2020-07-08 | 2020-09-11 | 湖南银河天涛科技有限公司 | Motor simulation device |
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