CN104579273A - System and method for driving bipolar junction transistor by adjusting current of base electrode - Google Patents
System and method for driving bipolar junction transistor by adjusting current of base electrode Download PDFInfo
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- CN104579273A CN104579273A CN201410648464.3A CN201410648464A CN104579273A CN 104579273 A CN104579273 A CN 104579273A CN 201410648464 A CN201410648464 A CN 201410648464A CN 104579273 A CN104579273 A CN 104579273A
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Abstract
The invention provides a system and a method for driving a bipolar junction transistor by adjusting current of a base electrode. The system comprises a current generator configured to output a driving current signal to the bipolar junction transistor so as to adjust primary current flowing through a primary winding of a power converter, wherein the current generator is further configured to output the driving current signal to switch on the bipolar junction transistor during a first time period, a second time period and a third time period; the second time period separates the first time period from the third time period; the bipolar junction transistor is driven to work in a hard saturated region during the first time period and the second time period; furthermore, the bipolar junction transistor is driven to work in a quasi saturated region during the third time period.
Description
The application is the applying date is on June 20th, 2011, be entitled as the divisional application of the Chinese invention patent application No.201110171960.0 of " system and method by regulating base current to drive bipolar junction transistor ".
Technical field
The present invention relates to integrated circuit.More specifically, the invention provides the system and method for driving bipolar junction transistor (bipolar junction transistor).As just example, the present invention has been used to and has utilized the base current changed along with the time to drive bipolar junction transistor.But will recognize, the present invention has much wide range of application.
Background technology
Bipolar junction transistor (BJT) has been widely used as the mains switch in power electronic system.Fig. 1 (A) shows the simplification profile of traditional N-P-N bipolar junction transistor (BJT).N-P-N BJT 102 comprises P type doped layer 106, N-shaped lightly-doped layer 108 and N-shaped heavily doped layer 110.Layer 110 is connected to terminal 118 (such as, representing the terminal " C " of collector electrode), and layer 108 is used as territory, collector drift region.As shown in Fig. 1 (A), in layer 106, there are three heavily doped regions, comprise p-type heavily doped region 112 and two N-shaped heavily doped regions 114.Region 112 is connected to terminal 116 (such as, representing the terminal " B " of base stage), and region 114 is connected to terminal 120 (such as, representing the terminal " E " of emitter).Usually, by making N-P-N BJT 102 conducting to region 112 Injection Current, this electric current makes electronics flow to layer 110 from region 114.Fig. 1 (B) shows the simplified schematic symbol of traditional N-P-N bipolar junction transistor 102.This schematic symbols 104 comprises the terminal 116,118 and 120 representing base stage, collector and emitter respectively.The arrow 122 of terminal 120 indicates the flow direction of the electric current when N-P-N BJT 102 conducting.
Fig. 2 be illustrate as N-P-N BJT 102 collector electrode to the collector current of the function of emitter voltage simplification tradition diagram.As shown in the figure, N-P-N BJT at least can the work in the range of linearity, in quasi saturation region (quasi-saturation region) and hard zone of saturation (hard saturation region).In the range of linearity, for specific base current (such as, I
b), collector current (such as, I
c) relative to collector electrode to emitter voltage (such as, V
ce) keep constant.In addition, if collector electrode is to emitter voltage (such as, V
ce) be reduced fully, then BJT 102 enters quasi saturation region, and if collector electrode is to emitter voltage (such as, V
ce) fully reduced further, then BJT 102 enters hard zone of saturation.
Usually the switching speed requiring the mains switch in power electronic system to provide high, low conducting state output impedance and high cut-off state output impedance.Therefore, as mains switch, when BJT 102 conducting, BJT 102 is usually operated at hard zone of saturation, keeps lower to make output impedance.But in hard zone of saturation, the maximum switching frequency of BJT 102 is restricted usually.Such as, when BJT102 enters hard zone of saturation, many minority carriers are accumulated in base stage; Therefore, usually needed to remove these minority carriers before BJT102 can be cut off.The time needed for minority carrier removing accumulation is called as memory time, though its represent base current drop to close to zero time BJT102 still conducting time.Therefore, the maximum switching frequency of BJT 102 may be limited the memory time of minority carrier.
In order to improve the maximum switching frequency of BJT 102, need the amount reducing the minority carrier be stored in base stage.Such as, negative base current is used to the base stage cleaning minority carrier from BJT 102.But, when BJT 102 is operated in hard zone of saturation, be usually difficult to utilize negative base current to make BJT 102 end rapidly, this is because before making BJT 102 cut-off, charge carrier will be stored in the base region of BJT 102.
In another example, in order to reduce the amount of the minority carrier be stored in base stage, preventing BJT102 from entering hard zone of saturation, ending rapidly to make it possible to BJT 102.But the method significantly may add the conducting state power consumption of BJT 102.In order to generate same set electrode current, for same base current, collector electrode is to emitter voltage (such as, V
ce) high in quasi saturation region than in hard zone of saturation.
Fig. 3 (A) shows the simplification diagram of classical inverse excitation power supply transformation system.Flyback power supply transformation system 300 at least comprises BJT 304, controller 306 and resistor 308.BJT 304 (such as, BJT 102) is used as mains switch, and controller 306 is used to drive BJT 304.BJT 304 comprises emitter, collector electrode and base stage, and controller 306 comprises terminal 310 and 312.The emitter of BJT 304 is connected to resistor 308, and the base stage of BJT 304 is connected to controller 306 by terminal 310 (such as, terminal " DRV ").As shown in Fig. 3 (A), controller 306 provides base current 305 to make BJT 304 conducting or cut-off by terminal 310.If BJT 304 conducting, then the emitter current of BJT 304 flows through resistor 308, this resistor 308 formation voltage signal 309.Voltage signal 309 is received by terminal 312 (such as, terminal " CS ") by controller 306.
Fig. 3 (B) is the simplification tradition sequential chart of flyback power supply transformation system 300.Waveform 314 represents conducting as the BJT 304 of the function of time and cut-off condition, and waveform 316 represents the base current 305 as the function of time, and waveform 318 represents the voltage signal 309 as the function of time.As shown in Fig. 3 (B), when BJT 304 conducting (such as, at t
0period), base current 305 keeps constant, and voltage signal 309 is along with time increase.
Drive this conventional art of BJT 304 can make BJT 304 conducting, and rapidly BJT304 is driven as firmly saturated, with the power consumption during reducing turn on process.But constant base current 305 is (such as, as t
0shown in the waveform 316 of period) usually make more to be difficult to during procedures of turn-off, clear away the minority carrier be stored in BJT 304 base stage.Therefore, the procedures of turn-off of BJT 304 is usually longer, and the power consumption of BJT 304 may be higher.
Therefore, wish very much to improve the technology driving bipolar junction transistor.
Summary of the invention
The present invention relates to integrated circuit.More specifically, the invention provides the system and method for driving bipolar junction transistor.As just example, the present invention has been used to and has utilized the base current changed along with the time to drive bipolar junction transistor.But will recognize, the present invention has much wide range of application.
According to an embodiment, comprising for driving the system of the bipolar junction transistor for supply convertor: a current generator, being configured to bipolar junction transistor output driving current signal to regulate the primary current flowing through the armature winding of supply convertor.Current generator is also configured to: output driving current signal is to make bipolar junction transistor conducting during first time period, the second time period and the 3rd time period, and first time period and the 3rd time period are separated by the second time period.In addition, current generator is also configured in first time period and drives bipolar junction transistor to work in hard zone of saturation during the second time period.And current generator is also configured to drive bipolar junction transistor to work in quasi saturation region during the 3rd time period.First time period is in very first time place's beginning and in the place's end of the second time.Second time period is in the place's beginning of the 3rd time and in the place's end of the 4th time.In addition, the 3rd time period is in the place's beginning of the 5th time and in the place's end of the 6th time.Driving current signal the very first time place equal the first electric current, second the time place equal the second electric current, the 3rd the time place equal the 3rd electric current, the 4th the time place equal the 4th electric current, the 5th the time place equal the 5th electric current, and the 6th the time place equal the 6th electric current.The size of the second electric current is greater than the 3rd electric current, and the size of the 4th electric current is greater than the 5th electric current.
According to another embodiment, a kind of for driving the method for the bipolar junction transistor for supply convertor to comprise: to generate driving current signal; And to bipolar junction transistor output driving current signal to regulate the primary current flowing through the armature winding of supply convertor.For comprising to the process of bipolar junction transistor output driving current signal: output driving current signal is to make bipolar junction transistor conducting during first time period, the second time period and the 3rd time period, and first time period and the 3rd time period are separated by the second time period.For also comprising to the process of bipolar junction transistor output driving current signal: in first time period with drive bipolar junction transistor to work in hard zone of saturation during the second time period.In addition, for comprising to the process of bipolar junction transistor output driving current signal: drive bipolar junction transistor to work in quasi saturation region during the 3rd time period.First time period is in very first time place's beginning and in the place's end of the second time.Second time period is in the place's beginning of the 3rd time and in the place's end of the 4th time.In addition, the 3rd time period is in the place's beginning of the 5th time and in the place's end of the 6th time.Driving current signal the very first time place equal the first electric current, second the time place equal the second electric current, the 3rd the time place equal the 3rd electric current, the 4th the time place equal the 4th electric current, the 5th the time place equal the 5th electric current, and driving current signal the 6th the time place equal the 6th electric current.The size of the second electric current is greater than the 3rd electric current.The size of the 4th electric current is greater than the 5th electric current.
According to another embodiment, comprising for driving the system of the bipolar junction transistor for supply convertor: a current generator, being configured to bipolar junction transistor output driving current signal to regulate the primary current flowing through the armature winding of supply convertor.Current generator is also configured in first time period and drives bipolar junction transistor to work in hard zone of saturation during the second time period.It was the second time period after first time period.First time period is located to start in the very first time and is located to terminate in the second time, and the second time period is in the place's beginning of the 3rd time and in the place's end of the 4th time.Driving current signal the very first time place equal the first electric current, second the time place equal the second electric current, the 3rd the time place equal the 3rd electric current, and the 4th the time place equal the 4th electric current.Current generator is also configured to: receive the feedback signal be associated with primary current; And at least during the second time period, at least generate driving current signal based on the information be associated with feedback signal.The size of the second electric current is greater than the 3rd electric current, and the second time is identical with the 3rd time.
According to another embodiment, a kind of for driving the method for the bipolar junction transistor for supply convertor to comprise: to generate driving current signal; And to bipolar junction transistor output driving current signal to regulate the primary current flowing through the armature winding of supply convertor.For being included in first time period to the process of bipolar junction transistor output driving current signal and driving bipolar junction transistor to work in hard zone of saturation during the second time period.For comprising in first time period and the process that drives bipolar junction transistor to work in hard zone of saturation during the second time period: receive the feedback signal be associated with primary current; And at least during the second time period, at least generate driving current signal based on the information be associated with feedback signal.It was the second time period after first time period.First time period is in very first time place's beginning and in the place's end of the second time.Second time period is in the place's beginning of the 3rd time and in the place's end of the 4th time.Driving current signal the very first time place equal the first electric current, second the time place equal the second electric current, the 3rd the time place equal the 3rd electric current, the 4th the time place equal the 4th electric current.The size of the second electric current is greater than the 3rd electric current, and the second time is identical with the 3rd time.
According to another embodiment, comprising for driving the system of the bipolar junction transistor for supply convertor: a current generator, being configured to bipolar junction transistor output driving current signal to regulate the primary current flowing through the armature winding of supply convertor.Current generator is also configured to output driving current signal to make bipolar junction transistor in first time period and conducting during the second time period, is the second time period after first time period.In addition, current generator is also configured to during first time period, drive bipolar junction transistor to work in hard zone of saturation.Further, current generator is also configured to during the second time period, drive bipolar junction transistor to work in quasi saturation region.First time period is in very first time place's beginning and in the place's end of the second time.Second time period is in the place's beginning of the 3rd time and in the place's end of the 4th time.Driving current signal the very first time place equal the first electric current, second the time place equal the second electric current, the 3rd the time place equal the 3rd electric current, and the 4th the time place equal the 4th electric current.Current generator is also configured to: receive the feedback signal be associated with primary current; And at least during first time period, at least generate driving current signal based on the information be associated with feedback signal.The size of the second electric current is greater than the 3rd electric current, and the second time is identical with the 3rd time.
According to another embodiment, a kind of for driving the method for the bipolar junction transistor for supply convertor to comprise: to generate driving current signal; And to bipolar junction transistor output driving current signal to regulate the primary current flowing through the armature winding of supply convertor.For comprising output driving current signal to the process of bipolar junction transistor output driving current signal to make bipolar junction transistor in first time period and conducting during the second time period.Comprise in the process of first time period and conducting during the second time period to make bipolar junction transistor for output driving current signal: during first time period, drive bipolar junction transistor to work in hard zone of saturation; And during the second time period, drive bipolar junction transistor to work in quasi saturation region.It was the second time period after first time period.First time period is in very first time place's beginning and in the place's end of the second time.Second time period is in the place's beginning of the 3rd time and in the place's end of the 4th time.Driving current signal the very first time place equal the first electric current, second the time place equal the second electric current, the 3rd the time place equal the 3rd electric current, and the 4th the time place equal the 4th electric current.The size of the second electric current is greater than the 3rd electric current, and the second time is identical with the 3rd time.
According to another embodiment, comprising for driving the system of the bipolar junction transistor for supply convertor: a current generator, being configured to bipolar junction transistor output driving current signal to regulate the primary current flowing through the armature winding of supply convertor.Current generator is also configured to: output driving current signal to make bipolar junction transistor in first time period and conducting during the second time period, and makes bipolar junction transistor end during the 3rd time period and the 4th time period.In addition, current generator is also configured to during first time period, drive bipolar junction transistor to work in hard zone of saturation.And current generator is also configured to drive bipolar junction transistor to work in quasi saturation region during the second time period.It was the second time period after first time period.It was the 4th time period after second time period.It was the 3rd time period before first time period.First time period is in very first time place's beginning and in the place's end of the second time.Second time period is in the place's beginning of the 3rd time and in the place's end of the 4th time.3rd time period is in the place's end of the 5th time, and the 4th time period is in the place's beginning of the 6th time.Driving current signal the very first time place equal the first electric current, second the time place equal the second electric current, the 3rd the time place equal the 3rd electric current, the 4th the time place equal the 4th electric current, the 5th the time place equal the 5th electric current, and the 6th the time place equal the 6th electric current.The size of the second electric current is greater than the 3rd electric current.The size of the 5th electric current is less than the first electric current, and the 6th electric current is different from the 4th electric current.
According to another embodiment, a kind of for driving the method for the bipolar junction transistor for supply convertor to comprise: to generate driving current signal; And to bipolar junction transistor output driving current signal to regulate the primary current flowing through the armature winding of supply convertor.For comprising to the process of bipolar junction transistor output driving current signal: output driving current signal is to make bipolar junction transistor in first time period and conducting during the second time period; And output driving current signal ends during the 3rd time period and the 4th time period to make bipolar junction transistor.Comprise in the process of first time period and conducting during the second time period to make bipolar junction transistor for output driving current signal: during first time period, drive bipolar junction transistor to work in hard zone of saturation; And during the second time period, drive bipolar junction transistor to work in quasi saturation region.It was the second time period after first time period.It was the 4th time period after second time period.It was the 3rd time period before first time period.First time period is in very first time place's beginning and in the place's end of the second time.Second time period is in the place's beginning of the 3rd time and in the place's end of the 4th time.3rd time period is in the place's end of the 5th time, and the 4th time period is in the place's beginning of the 6th time.Driving current signal the very first time place equal the first electric current, second the time place equal the second electric current, the 3rd the time place equal the 3rd electric current, the 4th the time place equal the 4th electric current, the 5th the time place equal the 5th electric current, and the 6th the time place equal the 6th electric current.The size of the second electric current is greater than the 3rd electric current.The size of the 5th electric current is less than the first electric current, and the 6th electric current is different from the 4th electric current.
Depend on embodiment, one or more advantage can be obtained.These advantages of the present invention and various other object, characteristic sum benefit can be understood all sidedly with reference to the detailed description and the accompanying drawings below.
Accompanying drawing explanation
Fig. 1 (A) shows the simplification profile of traditional N-P-N bipolar junction transistor (BJT).
Fig. 1 (B) shows the simplified schematic symbol of traditional N-P-N bipolar junction transistor.
Fig. 2 be illustrate as N-P-N BJT collector electrode to the collector current of the function of emitter voltage simplification tradition diagram.
Fig. 3 (A) shows the simplification diagram of classical inverse excitation power supply transformation system.
Fig. 3 (B) is the simplification tradition sequential chart of flyback power supply transformation system.
Fig. 4 (A) is the simplification diagram that power converting system is according to an embodiment of the invention shown.
Fig. 4 (B) is the simplified timing diagram of the power converting system according to the embodiment of the present invention.
Fig. 5 is the simplification diagram of some assembly of the controller illustrated as the power converting system part according to the embodiment of the present invention.
Fig. 6 (A) is the simplification diagram of some assembly of the current source illustrated as the power converting system part according to the embodiment of the present invention.
Fig. 6 (B) illustrates the simplification diagram as some assembly of the current source of a power converting system part according to another embodiment of the present invention.
Fig. 7 be illustrate as the power converting system part according to the embodiment of the present invention, for regulating the simplification diagram of some assembly of the controller of base current.
Fig. 8 (A) is the simplification diagram of some assembly of the controller illustrated as the power converting system part according to the embodiment of the present invention.
Fig. 8 (B) is the simplification diagram of some assembly of the controller illustrated as the power converting system part according to the embodiment of the present invention.
Fig. 9 is the simplified timing diagram of power converting system according to another embodiment of the present invention.
Embodiment
The present invention relates to integrated circuit.More specifically, the invention provides the system and method for driving bipolar junction transistor.As just example, the present invention has been used to and has utilized the base current changed along with the time to drive bipolar junction transistor.But will recognize, the present invention has much wide range of application.
Fig. 4 (A) is the simplification diagram that power converting system is according to an embodiment of the invention shown.Power converting system 400 at least comprises BJT 404, controller 406 and resistor 408.This diagram is only example, and it should not limit the scope of claim undeservedly.Those skilled in the art will recognize that many variants, substitutions and modifications.Such as, power converting system 400 is flyback power supply converters.In another example, BJT 404 and resistor 408 are identical with resistor 308 with BJT 304 respectively.
According to an embodiment, BJT 404 is used as mains switch, and controller 406 is used to drive BJT 404.Such as, BJT 404 comprises emitter, collector electrode and base stage, and controller 406 comprises terminal 410 and 412.In another example, the emitter of BJT 404 is connected to resistor 408, and the base stage of BJT 404 is connected to controller 406 by terminal 410 (such as, terminal " DRV ").According to another embodiment, controller 406 provides base current 405 to make BJT 404 conducting or cut-off by terminal 410.Such as, if BJT 404 conducting, then the emitter current of BJT 404 flows through resistor 408, this resistor 408 formation voltage signal 409.In another example, voltage signal 409 is received by terminal 412 (such as, terminal " CS ") by controller 406.
Fig. 4 (B) is the simplified timing diagram of the power converting system 400 according to the embodiment of the present invention.This diagram is only example, and it should not limit the scope of claim undeservedly.Those skilled in the art will recognize that many variants, substitutions and modifications.Waveform 414 represents conducting and the cut-off condition of the BJT404 of the function as the time, and waveform 416 represents the base current 405 as the function of time, and waveform 418 represents the voltage signal 409 as the function of time.
In one embodiment, in time period t
1, t
2and t
3period, BJT 404 conducting (such as, as shown in waveform 414), and base current 405 (such as, as shown in waveform 416) is along with time change.Such as, in time period t
1period, BJT 404 is driven into hard zone of saturation by base current 405.In another example, in time period t
2period, base current is along with time increase and BJT 404 remains on hard zone of saturation.In another example, in time period t
3period, BJT 404 leaves hard zone of saturation and enters quasi saturation region.
In another embodiment, in order to make BJT 404 keep firmly saturated, base current 405 and collector current 407 have following relation:
β
mini
b> I
c(formula 1)
Wherein, I
brepresent base current 405, and I
crepresent collector current 407.In addition, β
minrepresent the minimum current gain of BJT 404 in the range of linearity.
As shown in Fig. 4 (B), I
1A, I
1B, I
2A, I
2B, I
3A, I
3B, I
4Aand I
4Brespective expression is according to the base current 405 at the different time place of some embodiments.Such as, if base current 405 is just, then this base current flows in the base stage of BJT 404.In another example, if base current 405 is negative, then this base current 405 flows out the base stage of BJT 404.
According to an embodiment, in time period t
1beginning, base current 405 is from I
1Ajump to I
1B(such as, as shown in the rising edge of waveform 416), and in time period t
1end, base current 405 is from I
2Adrop to I
2B(such as, as shown in the trailing edge of waveform 416).Such as, I
1Bequal I
2A.In another example, in time period t
1period, base current 405 is at I
1Bplace keeps constant.According to another embodiment, in time period t
2period, base current 405 is along with the time is from I
2Bbecome I
3A(such as, as shown in waveform 416).Such as, in time period t
2period, base current 405 is along with the time is from I
2Bbecome I
3A(such as, increasing linearly or non-linearly).According to another embodiment, in time period t
3beginning, base current 405 is from I
3Adrop to I
3B(such as, as shown in the trailing edge of waveform 416), and in time period t
3end, base current 405 is from I
4Abecome I
4B(such as, as shown in the trailing edge of waveform 416).Such as, I
4Bit is the negative current for making BJT 404 end.As another example, I
3Bequal I
4A.In another example, in time period t
3period, base current 405 is at I
3Bplace keeps constant.
As shown in Fig. 4 (A) and 4 (B), according to some embodiments, in time period t
1, t
2and t
3period regulates base current 405 can improve switching speed and/or reduce power consumption.Such as, in time period t
3end, BJT 404 can end rapidly, because at least very major part being accumulated in the minority carrier in BJT 404 base stage is in time period t
3period is cleared away.
As discussed above and emphasize further here, Fig. 4 (A) is only example, it should not limit the scope of claim undeservedly.Those skilled in the art will recognize that many variants, substitutions and modifications.Such as, power converting system 400 is replaced by the other power switch structure of such as boost configuration (Boost structure) and/or buck configuration (Buck structure) and so on.
Fig. 5 is the simplification diagram of some assembly of the controller 406 illustrated as power converting system 400 part according to the embodiment of the present invention.This diagram is only example, and it should not limit the scope of claim undeservedly.Those skilled in the art will recognize that many variants, substitutions and modifications.Controller 406 at least comprises three current sources 504,506 and 508.
In one embodiment, current source 504 provides constant current 505 (such as, I
const).Such as, this constant current is at least in whole time period t
1and t
2middle maintenance is constant.In another embodiment, current source 506 provides pulse current 507 (such as, I
pulse).Such as, pulse current 507 is in time period t
1, t
2and t
3period only comprises a pulse, and this pulse has and corresponds respectively to time period t
1beginning and the rising edge of end and trailing edge.
In another embodiment, current source 508 provides electric current 509 (such as, I
sense).Electric current 509 is at least in whole time period t
2in change (such as, linearly or non-linearly along with the time changes) along with the time.In another example, at least in time period t
2period, current source 508 receives and represents and flow through the signal (such as, voltage signal 409) of the electric current of BJT 404, and based on the information be associated with this signal (such as, voltage signal 409) to determine the size of electric current 509.
According to an embodiment, pulse current 506 is used to make BJT 404 conducting, and is driven in hard zone of saturation by BJT404.Such as, the size of pulse current 506 is close to the upper limit of the drive current of BJT 404.According to another embodiment, electric current 509 is generated by the electric current of senses flow through BJT 404, and is used to such as guarantee that BJT 404 is at least in time period t by meeting formula 1
2period remains in hard zone of saturation.
Fig. 6 (A) is the simplification diagram of some assembly of the current source 508 illustrated as power converting system 400 part according to the embodiment of the present invention.This diagram is only example, and it should not limit the scope of claim undeservedly.Those skilled in the art will recognize that many variants, substitutions and modifications.Current source 508 comprises the pair of transistor 624 and 626, resistor 628, operational amplifier 630 and the transistor 632 that form current mirroring circuit.
As shown in Fig. 6 (A), according to an embodiment, current source 508 (such as, as voltage to power pack) generates electric current 509, and this electric current 509 is used as base current 405 at least partially.Such as, operational amplifier 630 at input terminal 636 place receiver voltage signal 409, and responsively generates amplifying signal 640.In another example, amplifying signal 640 is received by transistor 632, and transistor 632 is also coupled to another input terminal 642 of operational amplifier 630.As a result, transistor 632 generates current signal 633, and current signal 633 flows through both transistor 624 and resistor 628.According to another embodiment, current signal 633 with estimated rate by transistor 626 mirror image to generate electric current 509.
As discussed above and here emphasize, Fig. 5 is only example, it should not limit the scope of claim undeservedly.Those skilled in the art will recognize that many variants, substitutions and modifications.Such as, current source 508 receives and represents that the current signal flowing through the electric current of BJT 404 is to replace receiver voltage signal 409, and determines the size of electric current 509 based on the information be associated with this current signal, as shown in Fig. 6 (B).
Fig. 6 (B) illustrates the simplification diagram as some assembly of the current source 508 of power converting system 400 part according to another embodiment of the present invention.This diagram is only example, and it should not limit the scope of claim undeservedly.Those skilled in the art will recognize that many variants, substitutions and modifications.Current source 508 comprises transistor 604 and 606, resistor 602 and 608, trsanscondutance amplifier 610 and transistor 618 and 620.Such as, transistor 604 and 606 forms a current mirroring circuit, and transistor 618 and 620 forms another current mirroring circuit.In another example, trsanscondutance amplifier 610 comprises operational amplifier 612 and transistor 614.
As shown in Fig. 6 (B), according to an embodiment, current source 508 generates electric current 509, and this electric current 509 is used as base current 405 at least partially.Such as, transistor 606 and 604 receives the emitter current of BJT 404, and responsively generates signal 607 and 609 at two terminal places of resistor 608.In another example, signal 607 and 609 is received by trsanscondutance amplifier 610 and is converted into current signal 611.In another example, current signal 611 flows through transistor 618, and with estimated rate by transistor 620 mirror image to generate electric current 509.
Fig. 7 be illustrate as power converting system 400 part according to the embodiment of the present invention, for regulating the simplification diagram of some assembly of the controller 406 of base current.This diagram is only example, and it should not limit the scope of claim undeservedly.Those skilled in the art will recognize that many variants, substitutions and modifications.Controller 406 comprises transistor 706,708,710,712,714 and 716, and current source 718.Such as, transistor 712 and 716 is p slot field-effect transistors, and transistor 714 is n slot field-effect transistors.In another example, current source 718 represents in controller 406 some other assembly generating electric current 719, and electric current 719 also flows through transistor 710.
In one embodiment, transistor 706 mirror image electric current 719, and generate electric current 720 by transistor 716.Such as, transistor 716 conducting or cut-off by control signal 724 (such as, Pre_Turn_Off signal).In another example, if transistor 716 ends, then electric current 720 vanishing.In another example, transistor 708 mirror image electric current 719, and generate electric current 722 by transistor 712.Transistor 712 conducting or cut-off by control signal 726 (such as, Turn_Off signal).In another example, if transistor 712 ends, then electric current 722 vanishing.In another embodiment, transistor 714 conducting or cut-off by control signal 726.Such as, if transistor 714 conducting, then transistor 714 generates electric current 728.
According to an embodiment, if transistor 712 and 716 conducting but transistor 714 end, then base current 405 flows to the base stage of BJT 404 from terminal 410, and equals electric current 720 and 722 sum.According to another embodiment, if transistor 712 and 716 ends but transistor 714 conducting, then base current 405 flows to terminal 410 from the base stage of BJT 404 and equals electric current 728.Such as, with reference to figure 4 (B), according to some embodiment, in time period t
3end, base current 405 changes its direction, this is because I
5be greater than zero and I
6be less than zero.
According to some embodiments, if BJT 404 conducting (such as, being in hard zone of saturation), then control signal 724 and 726 is logic low.Such as, responsively, transistor 712 and 716 conducting and transistor 714 end, and provide the base current 405 flow in BJT 404 base stage thus.
In one embodiment, control signal 724 became logic high before control signal 726 also becomes logic high.Such as, responsively, transistor 716 ends, but transistor 712 keeps conducting and transistor 714 remain off.In another example, the size flowing to the base current 405 in BJT 404 base stage is reduced, thus makes BJT 404 enter quasi saturation region.In another embodiment, after control signal 724 becomes logic high, control signal 726 also becomes logic high.Such as, responsively, transistor 712 and 716 all ends, and transistor 714 conducting.In another example, base current 405 changes its direction and flows out the base stage of BJT 404, clears away the minority carrier be accumulated in BJT 404 base stage thus and BJT 404 is ended rapidly.
Fig. 8 (A) is the simplification diagram of some assembly of the controller 406 illustrated as power converting system 400 part according to the embodiment of the present invention.This diagram is only example, and it should not limit the scope of claim undeservedly.Those skilled in the art will recognize that many variants, substitutions and modifications.Controller 406 comprises current source 838 and 840, operational amplifier 842, transistor 848,854,856,858,860,862,864,866 and 868, and resistor 870.Such as, transistor 848,854,856 and 866 is n slot field-effect transistors, and transistor 858,860,862,864 and 868 is p slot field-effect transistors.In another example, transistor 868 reception control signal 872, transistor 864 and 866 reception control signal 874, transistor 854 reception control signal 876, and transistor 856 reception control signal 878.
In one embodiment, operational amplifier 842, the combination of transistor 848,858,860 and 862 and resistor 870 substantially with the such as operational amplifier 630 shown in Fig. 6 (A), the combination of transistor 624,626 and 632 and resistor 628 plays phase same-action, wherein, transistor 632 is replaced by transistor 860 and 862.In another embodiment, the combination of transistor 858,860,862,864,866 and 868 plays phase same-action with the combination of transistor 706,708,710,712,714 and 716 as shown in Figure 7 substantially.Such as, control signal 872 is identical with control signal 724, and control signal 874 is identical with control signal 726.
As shown in Fig. 8 (A), according to an embodiment, current signal 880,882 and 884 flows through transistor 858.Such as, current signal 880 is controlled by transistor 854, transistor 854 conducting or cut-off by control signal 876.In another example, current signal 882 is generated by current source 838.In another example, current signal 884 is controlled by transistor 856, transistor 856 conducting or cut-off be coupled to current source 840 by control signal 878.According to another embodiment, current signal 882 is constant currents, and current signal 884 is pulse currents.
According to another embodiment, current signal 880,882 and 884 is added by transistor 858, and by transistor 860 and 862 mirror image, to generate through the electric current of phase adduction through mirror image.Such as, if transistor 868 and 864 conducting and transistor 866 end, then this is used to make BJT 404 conducting through the electric current of phase adduction through mirror image and is driven into hard zone of saturation.In another example, afterwards, by first making transistor 868 end, then make transistor 864 end and make transistor 866 conducting, first BJT 404 enters quasi saturation region and then ends fast.
Fig. 8 (B) is the simplification diagram of some assembly of the controller 406 illustrated as power converting system 400 part according to the embodiment of the present invention.This diagram is only example, and it should not limit the scope of claim undeservedly.Those skilled in the art will recognize that many variants, substitutions and modifications.Controller 406 comprises current source 838 and 840, transistor 854,856 and 858, and transistor 860,862,864,866 and 868.In addition, controller 406 comprises transistor 810 and 812, resistor 816 and 818 and trsanscondutance amplifier 814.
Such as, trsanscondutance amplifier 814 comprises operational amplifier 822 and transistor 824.In another example, transistor 810,812,824,854,856 and 866 is n slot field-effect transistors, and transistor 858,860,862,864 and 868 is p slot field-effect transistors.In another example, transistor 868 reception control signal 872, transistor 864 and 866 reception control signal 874, transistor 854 reception control signal 876, and transistor 856 reception control signal 878.
According to an embodiment, the combination of transistor 810 and 812, resistor 816 and 818, trsanscondutance amplifier 814 and transistor 858,860 and 862 plays phase same-action with the combination of the transistor 604 and 606 such as shown in Fig. 6 (B), resistor 602 and 608, trsanscondutance amplifier 610 and transistor 618 and 620 substantially, wherein, transistor 620 is replaced by transistor 860 and 862.Such as, terminal 804 is identical with terminal 622.According to another embodiment, the combination of transistor 858,860,862,864,866 and 868 plays phase same-action with the combination of transistor 706,708,710,712,714 and 716 as shown in Figure 7 substantially.Such as, control signal 872 is identical with control signal 724, and control signal 874 is identical with control signal 726.
Fig. 9 is the simplified timing diagram of power converting system 400 according to another embodiment of the present invention.This diagram is only example, and it should not limit the scope of claim undeservedly.Those skilled in the art will recognize that many variants, substitutions and modifications.Waveform 902 represents the control signal 876 as the function of time, waveform 904 represents the control signal 878 as the function of time, waveform 906 represent as the function of time control signal 872 (such as, control signal 724), and waveform 908 represents the control signal 874 (such as, control signal 726) as the function of time.In addition, waveform 910 represents the voltage signal 409 as the function of time, and waveform 912 represents the base current 405 as the function of time.Such as, waveform 910 is identical with waveform 418.In another example, waveform 912 is identical with waveform 416.
In one embodiment, waveform 902,904,906,908,910 and 912 describes some operation of Fig. 8 (A).In another embodiment, waveform 902,904,906,908,910 and 912 describes some operation of Fig. 8 (B).
According to another embodiment, according to an embodiment, comprising for driving the system of the bipolar junction transistor for supply convertor: a current generator, being configured to bipolar junction transistor output driving current signal to regulate the primary current flowing through the armature winding of supply convertor.Current generator is also configured to: output driving current signal is to make bipolar junction transistor conducting during first time period, the second time period and the 3rd time period, and first time period and the 3rd time period are separated by the second time period.In addition, current generator is also configured in first time period and drives bipolar junction transistor to work in hard zone of saturation during the second time period.And current generator is also configured to drive bipolar junction transistor to work in quasi saturation region during the 3rd time period.First time period is in very first time place's beginning and in the place's end of the second time.Second time period is in the place's beginning of the 3rd time and in the place's end of the 4th time.In addition, the 3rd time period is in the place's beginning of the 5th time and in the place's end of the 6th time.Driving current signal the very first time place equal the first electric current, second the time place equal the second electric current, the 3rd the time place equal the 3rd electric current, the 4th the time place equal the 4th electric current, the 5th the time place equal the 5th electric current, and the 6th the time place equal the 6th electric current.The size of the second electric current is greater than the 3rd electric current, and the size of the 4th electric current is greater than the 5th electric current.Such as, this system at least realizes according to Fig. 4 (A), Fig. 4 (B), Fig. 5, Fig. 6 (A), Fig. 6 (B), Fig. 7, Fig. 8 (A), Fig. 8 (B) and/or Fig. 9.
According to another embodiment, a kind of for driving the method for the bipolar junction transistor for supply convertor to comprise: to generate driving current signal; And to bipolar junction transistor output driving current signal to regulate the primary current flowing through the armature winding of supply convertor.For comprising to the process of bipolar junction transistor output driving current signal: output driving current signal is to make bipolar junction transistor conducting during first time period, the second time period and the 3rd time period, and first time period and the 3rd time period are separated by the second time period.For also comprising to the process of bipolar junction transistor output driving current signal: in first time period with drive bipolar junction transistor to work in hard zone of saturation during the second time period.In addition, for comprising to the process of bipolar junction transistor output driving current signal: drive bipolar junction transistor to work in quasi saturation region during the 3rd time period.First time period is in very first time place's beginning and in the place's end of the second time.Second time period is in the place's beginning of the 3rd time and in the place's end of the 4th time.In addition, the 3rd time period is in the place's beginning of the 5th time and in the place's end of the 6th time.Driving current signal the very first time place equal the first electric current, second the time place equal the second electric current, the 3rd the time place equal the 3rd electric current, the 4th the time place equal the 4th electric current, the 5th the time place equal the 5th electric current, and driving current signal the 6th the time place equal the 6th electric current.The size of the second electric current is greater than the 3rd electric current.The size of the 4th electric current is greater than the 5th electric current.Such as, the method at least realizes according to Fig. 4 (A), Fig. 4 (B), Fig. 5, Fig. 6 (A), Fig. 6 (B), Fig. 7, Fig. 8 (A), Fig. 8 (B) and/or Fig. 9.
According to another embodiment, comprising for driving the system of the bipolar junction transistor for supply convertor: a current generator, being configured to bipolar junction transistor output driving current signal to regulate the primary current flowing through the armature winding of supply convertor.Current generator is also configured in first time period and drives bipolar junction transistor to work in hard zone of saturation during the second time period.It was the second time period after first time period.First time period is located to start in the very first time and is located to terminate in the second time, and the second time period is in the place's beginning of the 3rd time and in the place's end of the 4th time.Driving current signal the very first time place equal the first electric current, second the time place equal the second electric current, the 3rd the time place equal the 3rd electric current, and the 4th the time place equal the 4th electric current.Current generator is also configured to: receive the feedback signal be associated with primary current; And at least during the second time period, at least generate driving current signal based on the information be associated with feedback signal.The size of the second electric current is greater than the 3rd electric current, and the second time is identical with the 3rd time.This system at least realizes according to Fig. 4 (A), Fig. 4 (B), Fig. 5, Fig. 6 (A), Fig. 6 (B), Fig. 8 (A), Fig. 8 (B) and/or Fig. 9.
According to another embodiment, a kind of for driving the method for the bipolar junction transistor for supply convertor to comprise: to generate driving current signal; And to bipolar junction transistor output driving current signal to regulate the primary current flowing through the armature winding of supply convertor.For being included in first time period to the process of bipolar junction transistor output driving current signal and driving bipolar junction transistor to work in hard zone of saturation during the second time period.For comprising in first time period and the process that drives bipolar junction transistor to work in hard zone of saturation during the second time period: receive the feedback signal be associated with primary current; And at least during the second time period, at least generate driving current signal based on the information be associated with feedback signal.It was the second time period after first time period.First time period is in very first time place's beginning and in the place's end of the second time.Second time period is in the place's beginning of the 3rd time and in the place's end of the 4th time.Driving current signal the very first time place equal the first electric current, second the time place equal the second electric current, the 3rd the time place equal the 3rd electric current, the 4th the time place equal the 4th electric current.The size of the second electric current is greater than the 3rd electric current, and the second time is identical with the 3rd time.The method at least realizes according to Fig. 4 (A), Fig. 4 (B), Fig. 5, Fig. 6 (A), Fig. 6 (B), Fig. 8 (A), Fig. 8 (B) and/or Fig. 9.
According to another embodiment, comprising for driving the system of the bipolar junction transistor for supply convertor: a current generator, being configured to bipolar junction transistor output driving current signal to regulate the primary current flowing through the armature winding of supply convertor.Current generator is also configured to output driving current signal to make bipolar junction transistor in first time period and conducting during the second time period, is the second time period after first time period.In addition, current generator is also configured to during first time period, drive bipolar junction transistor to work in hard zone of saturation.Further, current generator is also configured to during the second time period, drive bipolar junction transistor to work in quasi saturation region.First time period is in very first time place's beginning and in the place's end of the second time.Second time period is in the place's beginning of the 3rd time and in the place's end of the 4th time.Driving current signal the very first time place equal the first electric current, second the time place equal the second electric current, the 3rd the time place equal the 3rd electric current, and the 4th the time place equal the 4th electric current.Current generator is also configured to: receive the feedback signal be associated with primary current; And at least during first time period, at least generate driving current signal based on the information be associated with feedback signal.The size of the second electric current is greater than the 3rd electric current, and the second time is identical with the 3rd time.This system at least realizes according to Fig. 4 (A), Fig. 4 (B), Fig. 5, Fig. 6 (A), Fig. 6 (B), Fig. 7, Fig. 8 (A), Fig. 8 (B) and/or Fig. 9.
According to another embodiment, a kind of for driving the method for the bipolar junction transistor for supply convertor to comprise: to generate driving current signal; And to bipolar junction transistor output driving current signal to regulate the primary current flowing through the armature winding of supply convertor.For comprising output driving current signal to the process of bipolar junction transistor output driving current signal to make bipolar junction transistor in first time period and conducting during the second time period.Comprise in the process of first time period and conducting during the second time period to make bipolar junction transistor for output driving current signal: during first time period, drive bipolar junction transistor to work in hard zone of saturation; And during the second time period, drive bipolar junction transistor to work in quasi saturation region.It was the second time period after first time period.First time period is in very first time place's beginning and in the place's end of the second time.Second time period is in the place's beginning of the 3rd time and in the place's end of the 4th time.Driving current signal the very first time place equal the first electric current, second the time place equal the second electric current, the 3rd the time place equal the 3rd electric current, and the 4th the time place equal the 4th electric current.The size of the second electric current is greater than the 3rd electric current, and the second time is identical with the 3rd time.The method at least realizes according to Fig. 4 (A), Fig. 4 (B), Fig. 5, Fig. 6 (A), Fig. 6 (B), Fig. 7, Fig. 8 (A), Fig. 8 (B) and/or Fig. 9.
According to another embodiment, comprising for driving the system of the bipolar junction transistor for supply convertor: a current generator, being configured to bipolar junction transistor output driving current signal to regulate the primary current flowing through the armature winding of supply convertor.Current generator is also configured to: output driving current signal to make bipolar junction transistor in first time period and conducting during the second time period, and makes bipolar junction transistor end during the 3rd time period and the 4th time period.In addition, current generator is also configured to during first time period, drive bipolar junction transistor to work in hard zone of saturation.And current generator is also configured to drive bipolar junction transistor to work in quasi saturation region during the second time period.It was the second time period after first time period.It was the 4th time period after second time period.It was the 3rd time period before first time period.First time period is in very first time place's beginning and in the place's end of the second time.Second time period is in the place's beginning of the 3rd time and in the place's end of the 4th time.3rd time period is in the place's end of the 5th time, and the 4th time period is in the place's beginning of the 6th time.Driving current signal the very first time place equal the first electric current, second the time place equal the second electric current, the 3rd the time place equal the 3rd electric current, the 4th the time place equal the 4th electric current, the 5th the time place equal the 5th electric current, and the 6th the time place equal the 6th electric current.The size of the second electric current is greater than the 3rd electric current.The size of the 5th electric current is less than the first electric current, and the 6th electric current is different from the 4th electric current.This system at least realizes according to Fig. 4 (A), Fig. 4 (B), Fig. 5, Fig. 6 (A), Fig. 6 (B), Fig. 7, Fig. 8 (A), Fig. 8 (B) and/or Fig. 9.
According to another embodiment, a kind of for driving the method for the bipolar junction transistor for supply convertor to comprise: to generate driving current signal; And to bipolar junction transistor output driving current signal to regulate the primary current flowing through the armature winding of supply convertor.For comprising to the process of bipolar junction transistor output driving current signal: output driving current signal is to make bipolar junction transistor in first time period and conducting during the second time period; And output driving current signal ends during the 3rd time period and the 4th time period to make bipolar junction transistor.Comprise in the process of first time period and conducting during the second time period to make bipolar junction transistor for output driving current signal: during first time period, drive bipolar junction transistor to work in hard zone of saturation; And during the second time period, drive bipolar junction transistor to work in quasi saturation region.It was the second time period after first time period.It was the 4th time period after second time period.It was the 3rd time period before first time period.First time period is in very first time place's beginning and in the place's end of the second time.Second time period is in the place's beginning of the 3rd time and in the place's end of the 4th time.3rd time period is in the place's end of the 5th time, and the 4th time period is in the place's beginning of the 6th time.Driving current signal the very first time place equal the first electric current, second the time place equal the second electric current, the 3rd the time place equal the 3rd electric current, the 4th the time place equal the 4th electric current, the 5th the time place equal the 5th electric current, and the 6th the time place equal the 6th electric current.The size of the second electric current is greater than the 3rd electric current.The size of the 5th electric current is less than the first electric current, and the 6th electric current is different from the 4th electric current.The method at least realizes according to Fig. 4 (A), Fig. 4 (B), Fig. 5, Fig. 6 (A), Fig. 6 (B), Fig. 7, Fig. 8 (A), Fig. 8 (B) and/or Fig. 9.
Such as, the some or all of assemblies of each embodiment of the present invention separately respectively and/or with at least another assembly combined utilize one or more component software, one or more nextport hardware component NextPort and/or software and hardware assembly one or more combine to realize.In another example, the some or all of assemblies of each embodiment of the present invention separately respectively and/or with at least another assembly combined in one or more circuit, such as realize in one or more analog circuit and/or one or more digital circuit.In another example, each embodiment of the present invention and/or example can be combined.
Although describe specific embodiments of the invention, but it will be apparent to one skilled in the art that other embodiment existing and be equal to described embodiment.Therefore, will understand, the present invention not by the restriction of shown specific embodiment, but is only limited by the scope of claim.
Claims (19)
1., for driving a system for the bipolar junction transistor for supply convertor, this system comprises:
Current generator, is configured to bipolar junction transistor output driving current signal to regulate the primary current flowing through the armature winding of supply convertor;
Wherein:
Described current generator is also configured in first time period and drives described bipolar junction transistor to work in hard zone of saturation during the second time period;
It is described second time period after described first time period;
Described first time period is in very first time place's beginning and in the place's end of the second time; And
Described second time period is in the place's beginning of the 3rd time and in the place's end of the 4th time;
Wherein:
Described driving current signal the described very first time place equal the first electric current;
Described driving current signal described second the time place equal the second electric current;
Described driving current signal described 3rd the time place equal the 3rd electric current; And
Described driving current signal described 4th the time place equal the 4th electric current;
Wherein, described current generator is also configured to:
Receive the feedback signal be associated with described primary current; And
At least during described second time period, at least generate described driving current signal based on the information be associated with described feedback signal; And
Wherein:
The size of described second electric current is greater than described 3rd electric current; And
Described second time is identical with described 3rd time.
2. the system as claimed in claim 1, wherein, described feedback signal selects from the group comprising the voltage signal be associated with described primary current and the current signal be associated with described primary current.
3. the system as claimed in claim 1, wherein, the size of described 4th electric current is greater than described 3rd electric current.
4. the system as claimed in claim 1, wherein:
Described current generator is also configured to export described driving current signal to end during the 3rd time period making described bipolar junction transistor before described first time period;
Described 3rd time period is in the place's end of the 5th time;
Described driving current signal described 5th the time place equal the 5th electric current; And
The size of described 5th electric current is less than described first electric current.
5. system as claimed in claim 4, wherein, the described very first time is identical with described 5th time.
6., for driving a method for the bipolar junction transistor for supply convertor, the method comprises:
Generate driving current signal; And
Described driving current signal is exported to regulate the primary current flowing through the armature winding of supply convertor to bipolar junction transistor;
Wherein:
Process for exporting from described driving current signal to described bipolar junction transistor is included in first time period and drives described bipolar junction transistor to work in hard zone of saturation during the second time period;
For comprising in first time period and the process that drives described bipolar junction transistor to work in hard zone of saturation during the second time period:
Receive the feedback signal be associated with described primary current; And
At least during described second time period, at least generate described driving current signal based on the information be associated with described feedback signal;
Wherein:
It is described second time period after described first time period;
Described first time period is in very first time place's beginning and in the place's end of the second time; And
Described second time period is in the place's beginning of the 3rd time and in the place's end of the 4th time;
Described driving current signal the described very first time place equal the first electric current;
Described driving current signal described second the time place equal the second electric current;
Described driving current signal described 3rd the time place equal the 3rd electric current; And
Described driving current signal described 4th the time place equal the 4th electric current;
Wherein:
The size of described second electric current is greater than described 3rd electric current; And
Described second time is identical with described 3rd time.
7., for driving a system for the bipolar junction transistor for supply convertor, this system comprises:
Current generator, is configured to bipolar junction transistor output driving current signal to regulate the primary current flowing through the armature winding of supply convertor;
Wherein, described current generator is also configured to:
Exporting described driving current signal to make described bipolar junction transistor in first time period and conducting during the second time period, is described second time period after described first time period;
During described first time period, drive described bipolar junction transistor to work in hard zone of saturation; And
During described second time period, drive described bipolar junction transistor to work in quasi saturation region;
Wherein:
Described first time period is in very first time place's beginning and in the place's end of the second time; And
Described second time period is in the place's beginning of the 3rd time and in the place's end of the 4th time;
Wherein:
Described driving current signal the described very first time place equal the first electric current;
Described driving current signal described second the time place equal the second electric current;
Described driving current signal described 3rd the time place equal the 3rd electric current; And
Described driving current signal described 4th the time place equal the 4th electric current;
Wherein, described current generator is also configured to:
Receive the feedback signal be associated with described primary current; And
At least during described first time period, at least generate described driving current signal based on the information be associated with described feedback signal;
Wherein:
The size of described second electric current is greater than described 3rd electric current; And
Described second time is identical with described 3rd time.
8. system as claimed in claim 7, wherein, described feedback signal selects from the group comprising the voltage signal be associated with described primary current and the current signal be associated with described primary current.
9. system as claimed in claim 7, wherein, the size of described second electric current is greater than described first electric current.
10. system as claimed in claim 7, wherein:
Described current generator is also configured to export described driving current signal to end during the 3rd time period making described bipolar junction transistor after described second time period;
Described 3rd time period is in the place's beginning of the 5th time;
Described driving current signal described 5th the time place equal the 5th electric current; And
Described 5th electric current is different from described 4th electric current.
11. systems as claimed in claim 10, wherein:
Described 4th electric current is configured to flow into described bipolar junction transistor; And
Described 5th electric current is configured to flow out described bipolar junction transistor.
12. systems as claimed in claim 10, wherein, described 4th time is identical with described 5th time.
13. 1 kinds for driving the method for the bipolar junction transistor for supply convertor, the method comprises:
Generate driving current signal; And
Described driving current signal is exported to regulate the primary current flowing through the armature winding of supply convertor to bipolar junction transistor;
Wherein:
Process for exporting from described driving current signal to described bipolar junction transistor comprises the described driving current signal of output to make described bipolar junction transistor in first time period and conducting during the second time period;
Comprise in the process of first time period and conducting during the second time period to make described bipolar junction transistor for exporting described driving current signal:
During described first time period, drive described bipolar junction transistor to work in hard zone of saturation; And
During described second time period, drive described bipolar junction transistor to work in quasi saturation region;
Wherein:
It is described second time period after described first time period;
Described first time period is in very first time place's beginning and in the place's end of the second time;
Described second time period is in the place's beginning of the 3rd time and in the place's end of the 4th time;
Described driving current signal the described very first time place equal the first electric current;
Described driving current signal described second the time place equal the second electric current;
Described driving current signal described 3rd the time place equal the 3rd electric current; And
Described driving current signal described 4th the time place equal the 4th electric current;
Wherein:
The size of described second electric current is greater than described 3rd electric current; And
Described second time is identical with described 3rd time.
14. 1 kinds for driving the system of the bipolar junction transistor for supply convertor, this system comprises:
Current generator, is configured to bipolar junction transistor output driving current signal to regulate the primary current flowing through the armature winding of supply convertor;
Wherein, described current generator is also configured to:
Export described driving current signal to make described bipolar junction transistor in first time period and conducting during the second time period, and described bipolar junction transistor is ended during the 3rd time period and the 4th time period;
During described first time period, drive described bipolar junction transistor to work in hard zone of saturation; And
During described second time period, drive described bipolar junction transistor to work in quasi saturation region;
Wherein:
It is described second time period after described first time period;
It is described 4th time period after described second time period; And
It is described 3rd time period before described first time period;
Wherein:
Described first time period is in very first time place's beginning and in the place's end of the second time;
Described second time period is in the place's beginning of the 3rd time and in the place's end of the 4th time;
Described 3rd time period is in the place's end of the 5th time; And
Described 4th time period is in the place's beginning of the 6th time;
Wherein:
Described driving current signal the described very first time place equal the first electric current;
Described driving current signal described second the time place equal the second electric current;
Described driving current signal described 3rd the time place equal the 3rd electric current;
Described driving current signal described 4th the time place equal the 4th electric current;
Described driving current signal described 5th the time place equal the 5th electric current; And
Described driving current signal described 6th the time place equal the 6th electric current;
Wherein:
The size of described second electric current is greater than described 3rd electric current;
The size of described 5th electric current is less than described first electric current; And
Described 6th electric current is different from described 4th electric current.
15. systems as claimed in claim 14, wherein:
Described 4th electric current is configured to flow into described bipolar junction transistor; And
Described 6th electric current is configured to flow out described bipolar junction transistor.
16. systems as claimed in claim 14, wherein, described 5th time is identical with the described very first time.
17. systems as claimed in claim 16, wherein, described 6th time is identical with described 4th time.
18. systems as claimed in claim 14, wherein, described second time is different from described 3rd time.
19. 1 kinds for driving the method for the bipolar junction transistor for supply convertor, the method comprises:
Generate driving current signal; And
Described driving current signal is exported to regulate the primary current flowing through the armature winding of supply convertor to bipolar junction transistor;
Wherein, the process for exporting described driving current signal to described bipolar junction transistor comprises:
Export described driving current signal to make described bipolar junction transistor in first time period and conducting during the second time period; And
Export described driving current signal to end during the 3rd time period and the 4th time period to make described bipolar junction transistor;
Wherein, comprise in the process of first time period and conducting during the second time period to make described bipolar junction transistor for exporting described driving current signal:
During described first time period, drive described bipolar junction transistor to work in hard zone of saturation; And
During described second time period, drive described bipolar junction transistor to work in quasi saturation region;
Wherein:
It is described second time period after described first time period;
It is described 4th time period after described second time period; And
It is described 3rd time period before described first time period;
Wherein:
Described first time period is in very first time place's beginning and in the place's end of the second time;
Described second time period is in the place's beginning of the 3rd time and in the place's end of the 4th time;
Described 3rd time period is in the place's end of the 5th time; And
Described 4th time period is in the place's beginning of the 6th time;
Wherein:
Described driving current signal the described very first time place equal the first electric current;
Described driving current signal described second the time place equal the second electric current;
Described driving current signal described 3rd the time place equal the 3rd electric current;
Described driving current signal described 4th the time place equal the 4th electric current;
Described driving current signal described 5th the time place equal the 5th electric current; And
Described driving current signal described 6th the time place equal the 6th electric current;
Wherein:
The size of described second electric current is greater than described 3rd electric current;
The size of described 5th electric current is less than described first electric current; And
Described 6th electric current is different from described 4th electric current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410648464.3A CN104579273B (en) | 2011-06-20 | 2011-06-20 | System and method for driving bipolar junction transistor by adjusting base current |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110171960.0A CN102843124B (en) | 2011-06-20 | 2011-06-20 | System and method for driving bipolar junction transistor through adjustment of base current |
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