CN201004615Y - Power driver of buffer controller - Google Patents
Power driver of buffer controller Download PDFInfo
- Publication number
- CN201004615Y CN201004615Y CNU2007200931460U CN200720093146U CN201004615Y CN 201004615 Y CN201004615 Y CN 201004615Y CN U2007200931460 U CNU2007200931460 U CN U2007200931460U CN 200720093146 U CN200720093146 U CN 200720093146U CN 201004615 Y CN201004615 Y CN 201004615Y
- Authority
- CN
- China
- Prior art keywords
- power
- resistance
- output
- circuit
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Electronic Switches (AREA)
- Dc-Dc Converters (AREA)
Abstract
The utility model relates to a power drive for a retarder controller, which is an isolated power driving control loop with four routes formed by a photoelectricity isolation driving circuit, a DC/DC convertor, a power switching circuit, a switchoff follow current loop and a stabilized voltage power supply. The front is connected with the logical control loop with the rear connected with retarder load to finish the joining for the weak electricity control logical signal of retarder and big current power output. The utility model basically solves a plurality of factors for damaging of the power switch component in the state of under the control big inductive character load PWM, which makes the power switch component always working in the normal power consumption area, and the over power consumption working state is eliminated. Approved by practice, the switchoff wasting designed by the switch is only under 0.1 percent of other switches adopting BTS 550 switch mould, thereby ensuring the whole reliability of the power switch.
Description
Technical field
The utility model discloses a kind of analog line driver of retarder controller, is used for the power switch of PWM type controller of current vortex retarder, relates to the auto electronics product technical field.
Background technology:
In the AE field, the damage problem of retarder controller is to perplex the chronic disease of retarder industry up to now always.The source of damage of existing each quasi-controller can belong to following two aspects: 1, switching component damage 2, control circuit damage.And the damage of power switch components and parts is the main reason that the retarder controller damages.And the reason that causes switching component to damage mainly to be switch cross power consumption uses.Because the load of retarder is the power inductance that has incomplete pulse transformer characteristics, this just makes the load characteristic of switching device when switch extremely worsen.When especially using at a slow speed switch element, this situation is particularly abominable when load is turn-offed.Though switching device has certain mistake power consumption ability, after the power consumption long-term accumulation that causes thus, must cause the overall power consumption of crossing of switching device.Under the bad situation of radiating condition, the damage of power switch assembly must take place.And most of exactly design employings now is this design.For example the controller of the product of the maximum enterprise of domestic production retarder and many manufacturer production all adopts is that the BTS550 series switch module of Siemens Company is as switch element.Though this switch module has a lot of defencive functions, switch element itself is very big for the switching loss of inductive load exactly for maximum shortcoming, and the characteristics of load have determined this class device of application can't avoid very large switching loss.Even having added very large fin also can not deal with problems at all.
Summary of the invention:
The utility model provides a kind of analog line driver of retarder controller, purpose is to adapt to complicated, abominable applied environment condition, load be mainly inductance and contain incomplete mutual inductance low-voltage and high-current, be adapted to the PWM switching mode analog line driver on the automobile.
The purpose of this utility model can reach by following measure: be made of photoelectric isolating driving circuit, DC/DC converter, power switch circuit, shutoff continuous current circuit, stabilized voltage power supply.Wherein, the front portion is connected with loop control logic, and the rear portion is connected with the retarder load, finishes being connected of retarder light current control logic signal and big current power output.Photoelectric isolating driving circuit is used for control circuit and the electricity isolation completely of power drive loop, is composed in parallel by four photoelectric isolated drivers, and four tunnel outputs are independent separately.
Described photoelectric isolating driving circuit is made up of No. four photoelectrical coupler J1～4, the input of photoelectrical coupler J1～4 is connected with the prime control circuit, its output end power is connected with the output of three terminal regulator, the output common end grounding, the input of the output termination power switch circuit of photoelectrical coupler;
Together be connected to 24V behind the negative terminal of the anode connection outlet side Vo of the input side Vi of DC/DC converter, the negativing ending grounding of input side, the anode of outlet side are connected to the 24V+Vo end of power switch circuit and form the floatingpump power supply;
Power switch circuit is to be made of four tunnel identical element circuits, in arbitrary element circuit, all contain two divider resistances, triode, load resistance, voltage stabilizing didoe, IGBT pipe, diode is formed, wherein, the saturated startup that divider resistance is formed triode divides hydraulic circuit, the node of divider resistance is connected to the output of photoelectrical coupler and is connected with the base stage of triode, and the collector electrode of triode is connected with load resistance; The other end of load resistance is connected to floating power supply output+end, the collector electrode of triode is connected to the grid of IGBT pipe, the negative pole of voltage stabilizing didoe, and the negative pole of the emitter of IGBT triode and the negative pole of the positive pole of voltage stabilizing didoe, diode, the diode in the continuous current circuit, an end of resistance are connected the back is connected to a winding of load as one tunnel output a end;
Turn-offing continuous current circuit is made of four tunnel identical element circuits, the shutoff continuous current circuit unit of forming by resistance, diode, electric capacity, the negative pole of resistance one end and diode, load winding an end and the emitter of IGBT triode link to each other, the other end of resistance links to each other with an end of the anode of diode, electric capacity, and the other end of electric capacity is connected to GND;
Stabilized voltage power supply is made up of three terminal regulator, voltage stabilizing didoe, electrochemical capacitor, resistance, one end of resistance is connected to the 24V power positive end, the other end is connected with the negative terminal of voltage stabilizing didoe, the anode of electrochemical capacitor, the input of three terminal regulator, and the anode of voltage stabilizing didoe is connected to GND with the negative terminal of electric capacity, the GND end of three terminal regulator.
Good effect of the present utility model is: removed the Several Factors of the damage of device for power switching under big inductive load PWM state of a control at all, made power switch component work and normal power consumption district always, eliminated and crossed the power consumption operating state.Practice confirms that the turn-off power loss of this switch designs is below 0.1% of other switches that adopts the BTS550 switch module only, thereby has guaranteed the global reliability of power switch assembly.
Description of drawings
Fig. 1 is the utility model circuit theory diagrams.
Embodiment:
According to shown in Figure 1, constitute the utility model device by photoelectric isolating driving circuit 1, DC/DC converter 2, power switch circuit 3, shutoff continuous current circuit 4, stabilized voltage power supply 5, wherein, photoelectric isolating driving circuit 1 is made up of four photoelectric isolated driver J1, J2, J3, J4, be used for the electricity isolation completely of control circuit and power drive loop, driver J1, J2, J3, J4 are input as the Transistor-Transistor Logic level signal, and 2 pin of J1, J2, J3, J4 are the input control end; The output that is input as of U2 allows control end; More than 5 inputs to be high level effective.
DC1 is a DC/DC converter 2, input Vi connects power supply, and output is Vo, and its unloaded no-load voltage ratio is always 2.4: 1, be output as 10V when being input as 24V, this output voltage admittance state that 24V goes up to Q5, Q6, Q7, Q8 that is added to provides a reliable saturated cut-in voltage.
The four-way switch passage is identical.Wherein to be input to J1 and to load to L1.4 is that example is described below: input high level is to the port 2 of J1, the input light-emitting diode admittance of photoelectrical coupler when port 3 is low level.Output 6 pin output low-resistance low level makes Q1 end.Q1 collector electrode output high level.Because the output voltage V o of DC1 is higher than the saturated admittance voltage of Q5, make the saturated admittance of Q5.Load L1.4 and 24V power connection.The shutoff continuous current circuit of being made up of R14, D10, C2 begins to give capacitor C 2 chargings by resistance R 14 simultaneously.
When input 2 step-downs of J1, or when the port 3 of J1 during for high level the input light-emitting diode of photoelectrical coupler end.Output 6 pin output high resistant high level, the JI output resistance guarantees to make the saturated admittance of Q1 with cooperating of R2, R3.Q1 collector electrode output low level makes Q5 end.When Q5 is become by saturated admittance in the process of ending, at first connect the electric voltage dropping of load L1.4 and Q5 emitter.D10 admittance when falling about 0.7V; C2 begins the afterflow to L1.4 by D10, and keeps the voltage of this point.Reducing to zero back Vce fully up to the electric current of the Q5 emitter of flowing through begins to increase.Because the afterflow of D10, C2 and pressure stabilization function make the power consumption of Q5 turn off process have basic change to become normal little power consumption state in short-term by the original power consumption state of crossing in short-term.
The floating voltage of DC1 also will change thereupon when mains voltage variations.The effect of D3 is to guarantee that the gate source voltage Vge of IGBT pipe remains on the fixing magnitude of voltage so that Q5 is in shallow saturation condition all the time when making admittance as the output voltage V o of DC1 during greater than the saturated admittance voltage of Q5.The lower turn off process time has just been protected in this design.
The output that is input as power switch of U2 allows control end.When being input as low level, turn-off all outputs.This end and control fault test section are connected under the abnormal conditions turn-offs controller.
Claims (1)
1, a kind of analog line driver of retarder controller is characterized in that: be made of photoelectric isolating driving circuit, DC/DC converter, power switch circuit, shutoff continuous current circuit, stabilized voltage power supply;
Described photoelectric isolating driving circuit is made up of No. four photoelectrical couplers, the input of photoelectrical coupler is connected with the prime control circuit, its output end power is connected with the output of three terminal regulator, output common end grounding, the input of the output termination power switch circuit of photoelectrical coupler;
Together be connected to 24V behind the negative terminal of the anode connection outlet side Vo of the input side Vi of DC/DC converter, the negativing ending grounding of input side, the anode of outlet side are connected to the 24V+Vo end of power switch circuit and form the floatingpump power supply;
Power switch circuit is to be made of four tunnel identical element circuits, in element circuit, two divider resistances, triode, load resistance, voltage stabilizing didoe, IGBT pipe, diodes are formed, wherein, the saturated startup that divider resistance is formed triode divides hydraulic circuit, the node of divider resistance is connected to the output of photoelectrical coupler and is connected with the base stage of triode, and the collector electrode of triode is connected with load resistance; The other end of load resistance is connected to floating power supply output+end, the collector electrode of triode is connected to the grid of IGBT pipe, the negative pole of voltage stabilizing didoe, and the negative pole of the emitter of IGBT pipe and the negative pole of the positive pole of voltage stabilizing didoe, diode, the diode in the continuous current circuit, an end of resistance are connected the back is connected to a winding of load as one tunnel output a end;
Turn-offing continuous current circuit is made of four tunnel identical element circuits, the shutoff continuous current circuit unit of forming by resistance, diode, electric capacity, the negative pole of resistance one end and diode, load winding an end and the emitter of IGBT triode link to each other, the other end of resistance links to each other with an end of the anode of diode, electric capacity, and the other end of electric capacity is connected to GND;
Stabilized voltage power supply is made up of three terminal regulator, voltage stabilizing didoe, electrochemical capacitor, resistance, one end of resistance is connected to the 24V power positive end, the other end is connected with the negative terminal of voltage stabilizing didoe, the anode of electrochemical capacitor, the input of three terminal regulator, and the anode of voltage stabilizing didoe is connected to GND with the negative terminal of electric capacity, the GND end of three terminal regulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200931460U CN201004615Y (en) | 2007-01-12 | 2007-01-12 | Power driver of buffer controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200931460U CN201004615Y (en) | 2007-01-12 | 2007-01-12 | Power driver of buffer controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201004615Y true CN201004615Y (en) | 2008-01-09 |
Family
ID=39040158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200931460U Expired - Fee Related CN201004615Y (en) | 2007-01-12 | 2007-01-12 | Power driver of buffer controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201004615Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103840730A (en) * | 2012-11-26 | 2014-06-04 | 凯迈(洛阳)电子有限公司 | Switch drive circuit of eddy current retarder controller |
-
2007
- 2007-01-12 CN CNU2007200931460U patent/CN201004615Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103840730A (en) * | 2012-11-26 | 2014-06-04 | 凯迈(洛阳)电子有限公司 | Switch drive circuit of eddy current retarder controller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204886405U (en) | Dual-power isolation circuit | |
| CN103178694B (en) | Insulated gate bipolar transistor gate driving push-pull circuit | |
| CN103606895B (en) | A kind of overvoltage turn-off protection circuit | |
| CN103457232A (en) | Short-circuit protection circuit of direct-current load and illuminator | |
| CN102013802A (en) | BOOST circuit with short circuit protection function | |
| CN104698262A (en) | Zero cross detection circuit and variable frequency air conditioner | |
| CN202888788U (en) | Overcurrent protection circuit and switching power supply | |
| CN101170278B (en) | A bridge soft shutdown circuit | |
| CN1228909C (en) | Synchronous rectifying driving circuit for DC converter | |
| CN202696454U (en) | Gate drive circuit | |
| CN106533144B (en) | Anti-reverse and current flowing backwards circuit | |
| CN104427721A (en) | Led drive circuit | |
| CN203180759U (en) | Gate driving push-pull circuit of insolated gate bipolar transistor | |
| CN204967263U (en) | Isolation circuit and dual-power supply system | |
| CN101534110A (en) | IGBT current-limiting drive circuit | |
| CN201004615Y (en) | Power driver of buffer controller | |
| CN203313051U (en) | Efficient release circuit structure | |
| CN202797867U (en) | Short circuit protection circuit and power supply circuit provided with the same | |
| CN203423482U (en) | Power tube protection circuit and switch power supply circuit using the circuit | |
| CN103929104A (en) | Drive circuit without extra drive power source | |
| CN107046418B (en) | Single live wire power-taking circuit | |
| CN202424500U (en) | Soft switching circuit for active clamp forward synchronous rectification | |
| CN204697031U (en) | Two N-MOSFET is adopted to promote the High Power IGBT Driver Circuit of level | |
| CN104218534A (en) | DC-DC switching type circuit with no-load protection and lamp | |
| CN203932956U (en) | A kind of high-current relay Drive Protecting Circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080109 |