CN103532372B - Multi-phase DC-DC power converter - Google Patents
Multi-phase DC-DC power converter Download PDFInfo
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- CN103532372B CN103532372B CN201210230036.XA CN201210230036A CN103532372B CN 103532372 B CN103532372 B CN 103532372B CN 201210230036 A CN201210230036 A CN 201210230036A CN 103532372 B CN103532372 B CN 103532372B
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Abstract
A kind of multi-phase DC-DC power converter discloses at this, and it comprises at least one direct current to DC power supply modular converter.Each direct current at least comprises the first output inductor, the second output inductor and current detector to DC power supply modular converter.Current detector, in order to sense the electric current by the first output inductor and the second output inductor, comprises the first resistance, the first electric capacity, the second resistance, the second electric capacity and the 3rd resistance.3rd resistance is directly or indirectly coupled between the first electric capacity and load circuit, and the 3rd resistance is directly or indirectly coupled between the second electric capacity and load circuit, make, when the first electric capacity is in charged state, to flow through the second electric capacity to the charging current part of the first capacitor charging.
Description
Technical field
The present invention be relevant direct current to apparatus for converting DC power, particularly about multi-phase DC-DC power converter.
Background technology
Along with the development of science and technology, electronic installation miscellaneous is widely used in the middle of the life of people.And different electronic installations, or the different circuit under same electronic installation, often need different direct current service voltages.Therefore a reliable and stable direct current also becomes more important to apparatus for converting DC power.
In general, the upper limit of single-phase power supply change-over device is about 30 amperes, and after 30 amperes, its conversion efficiency will decline rapidly.Therefore as the device for being used in the high current drives of need, such as computer or automobile, the then power supply change-over device that necessary choice for use is heterogeneous.But heterogeneous power supply change-over device has the problem of each phase current inequality, when the excessive bias current of electric current is in a certain phase time, may cause that conversion efficiency is not good, circuit is unstable or part is overheated and cause damaging.
Therefore the polyphase source conversion equipment that a kind of each phase current on average exports should be suggested.
Summary of the invention
An aspect of of the present present invention is to propose a kind of multi-phase DC-DC power converter, and the electric current of wherein each phase all can on average be exported.
According to one embodiment of the invention, multi-phase DC-DC power converter comprises pulse wave width modulation module, electric current back coupling processing module and at least one direct current to DC power supply modular converter.Pulse wave width modulation module controls pulse wave in order to produce many groups.Direct current comprises the first output inductor, the second output inductor, the first derailing switch, second switch device and current detector to DC power supply modular converter.First derailing switch couples the first output inductor, and the first derailing switch receives control pulse wave to control the electric current of the first output inductor.Second switch device couples the second output inductor, and second switch device receives another control pulse wave to control the electric current of the second output inductor.Current detector is parallel to first, second output inductor, and in order to sense the electric current by the first output inductor and the second output inductor, wherein electric current feedbacks processing module according to sensed electric current, immediately to adjust the work period controlling pulse wave.Current detector comprises the first resistance, the first electric capacity, the second resistance, the second electric capacity and the 3rd resistance.First resistant series first electric capacity.Second resistant series second electric capacity.3rd resistance is directly or indirectly coupled between the first electric capacity and load circuit, and the 3rd resistance is directly or indirectly coupled between the second electric capacity and load circuit, make when the first electric capacity is in charged state, second electric capacity is flowed through to the charging current part of the first capacitor charging, and make, when the second electric capacity is in charged state, to flow through the first electric capacity to the charging current part of the second capacitor charging.
According to one embodiment of the invention, wherein the first end of the first resistance, the first end of the first output inductor and the first derailing switch are coupled to each other, second end of the first resistance couples the first end of the first electric capacity, second end of the first electric capacity couples the first end of the 3rd resistance, and the second end of the 3rd resistance, the second end of the first output inductor, the second end of the second output inductor and load circuit are coupled to each other.
According to one embodiment of the invention, wherein the first end of the second resistance, the first end of the second output inductor and second switch device are coupled to each other, second end of the second resistance couples the first end of the second electric capacity, second end of the second electric capacity couples the first end of the 3rd resistance, and the second end of the 3rd resistance, the second end of the first output inductor, the second end of the second output inductor and load circuit are coupled to each other.
According to one embodiment of the invention, anti-phase with the control pulse wave in order to control second switch device in order to the control pulse wave controlling the first derailing switch.
According to one embodiment of the invention, when the first electric capacity is in charged state, the second electric capacity is discharge condition.When the second electric capacity is in charged state, the first electric capacity is discharge condition.
According to one embodiment of the invention, wherein the resistance value of the 3rd resistance is less than or equal to the resistance value of the first resistance, and the resistance value of the 3rd resistance is less than or equal to the resistance value of the second resistance.
According to one embodiment of the invention, this first derailing switch comprises the first high-side switch device, and this second switch device comprises the second high-side switch device.
According to one embodiment of the invention, the first derailing switch also comprises the first low side switch device, couples the first high-side switch device.Second switch device also comprises the second low side switch device, couples the second high-side switch device.
According to one embodiment of the invention, the time difference that the resistance value of the 3rd resistance is the current value of this first, second output inductor that this current detector of adjustable senses when being zero point when being zero point with the electric current of this first, second output inductor actual.
According to one embodiment of the invention, multi-phase DC-DC power converter voltage feedback processing module and division module.Division module bestows the output voltage of load circuit in order to disperse direct current to DC power supply modular converter, comprise the first divider resistance and the second divider resistance, wherein the first divider resistance and the second divider resistance are one another in series, and the cross-pressure on voltage feedback processing module foundation the second divider resistance is with the work period making the adjustment of pulse wave width modulation module control pulse wave.
By the above embodiments, multi-phase DC-DC power converter can be implemented.Wherein, by the cross-pressure at electric capacity two ends each in current detector, immediately can reflect the electric current by first, second outputting inductance, to make pulse wave width modulation module immediately can adjust the work period controlling pulse wave, and avoid the current unevenness flowing through each output inductor.And utilize the 3rd resistance in adjustment current detector, more can adjust the electric current in fact flowing through each output inductor further and drop to the time difference that electric current that zero point and current detector sense drops to zero point, and carried out meticulousr adjustment and control by be allowed multi-phase DC-DC power converter.
Accompanying drawing explanation
For above and other object of the present invention, feature, advantage and embodiment can be become apparent, appended the description of the drawings is as follows:
The multi-phase DC-DC power converter circuit diagram of Fig. 1 for illustrating according to one embodiment of the invention;
The multi-phase DC-DC power converter circuit diagram of Fig. 2 for illustrating according to one embodiment of the invention;
The equivalent circuit diagram of Fig. 3 for illustrating according to the current detector in Fig. 1;
Fig. 4 for illustrate according to the multi-phase DC-DC power converter of Fig. 1 the electric current flowing through first, second output inductor, first, second electric capacity two ends cross-pressure, flow through the electric current of first, second electric capacity and flow through the simulation drawing of electric current of the 3rd resistance;
Fig. 5 is the multi-phase DC-DC power converter illustrating Fig. 1, when the electric current flowing through the first output inductor is discontinuous and the 3rd resistance is 2k Ω, flows through the simulation drawing of the cross-pressure on the electric current of the first output inductor and the first electric capacity;
Fig. 6 is the multi-phase DC-DC power converter illustrating Fig. 1, when the electric current flowing through the first output inductor is discontinuous and the 3rd resistance is 0k, flows through the simulation drawing of the cross-pressure on the electric current of the first output inductor and the first electric capacity.
[main element symbol description]
10: load circuit 100: multi-phase DC-DC power converter
110: time pulse generating module 120: pulse wave width modulation module
130: electric current back coupling processing module 140: direct current is to DC power supply modular converter
142: the first derailing switches 144: second switch device
146: current detector 150: voltage feedback processing module
R1: the first resistance R2: the second resistance
R3: the three resistance C1: the first electric capacity
C2: the second electric capacity L1: the first output inductor
L2: the second output inductor Q1: the first high-side switch device
Q2: the first low side switch device Q3: the second high-side switch device
Q4: the second low side switch device D1-D4: diode
R
f1: the first divider resistance R
f2: the second divider resistance
C
o: output capacitance V
o: output voltage
DCR1: resistance DCR2: resistance
V
l1: voltage V
l2: voltage
V
c1: voltage V
c1: voltage
I
l1: electric current I
l2: electric current
I
c1: electric current I
c1: electric current
I
r3: electric current t
0, IL1: time point
T
0, VC1: time point I
c1, R3: electric current
I
c2, R3: electric current I
c1, C2: electric current
I
c2, C1: electric current
Embodiment
Below and will describe in detail and clearly demonstrate spirit of the present invention with accompanying drawing, have in any art and usually know that the knowledgeable is after understanding preferred embodiment of the present invention, when by the technology of teachings of the present invention, can being changed and modifying, it does not depart from spirit of the present invention and scope.
An aspect of of the present present invention is to propose a kind of multi-phase DC-DC power converter, and the electric current of wherein each phase all can on average be exported.
Multi-phase DC-DC power converter 100 circuit diagram of Fig. 1 for illustrating according to one embodiment of the invention.Multi-phase DC-DC power converter 100 comprises time pulse generating module 110, pulse wave width modulation module 120, electric current back coupling processing module 130 and at least one direct current to DC power supply modular converter 140.In the present embodiment, above-mentioned modules all can hardware circuit realiration.In addition, the multi-phase DC-DC power converter 100 of the present embodiment only comprises a direct current to DC power supply modular converter 140, be 2 phases with its number of phases, but in other embodiments, multi-phase DC-DC power converter 100 can comprise two, three or more direct current to DC power supply modular converter 140, be can be 4 phases, 6 phases or heterogeneous with its number of phases.
Time pulse generating module 110 drives clock pulse to drive pulse wave width modulation module 120 in order to produce.Pulse wave width modulation module 120 controls pulse wave in order to produce many groups according to driving clock pulse.And control the size of the work period (dutycycle) of pulse wave, the output voltage V of multi-phase DC-DC power converter 100 can be determined
o.Electric current feedbacks processing module 130 in order to receive the feedback signal of direct current to DC power supply modular converter 140, so that make pulse wave width modulation module 120 the output current of direct current to DC power supply modular converter 140 excessive or too small time, adjustment controls work period of pulse wave.
Direct current can comprise the first output inductor L1, the second output inductor L2, the first derailing switch 142, second switch device 144, diode D1, diode D2 and current detector 146 to DC power supply modular converter 140.
Structurally, the first derailing switch 142 couple input power V
iN, pulse wave width modulation module 120 and the first output inductor L1, second switch device 144 couples input power V
iN, pulse wave width modulation module 120 and the second output inductor L2, the first output inductor L1 couple diode D1 and load circuit 10, second output inductor L2 couples diode D1 and load circuit 10.Current detector 146 is parallel on first, second output inductor L1, L2, and couples electric current back coupling processing module 130.
Operationally, pulse wave width modulation module 120 provides anti-phase control pulse wave to give the first derailing switch 142 and second switch device 144 respectively.When the first derailing switch 142 is in the first mode of operation, input power V
iNbe coupled to the first output inductor L1, and electric current is from input power V
iNflow through the first derailing switch 142, first output inductor L1 to load circuit 10, and store charge in the output capacitance C of load circuit 10
oin.Now the first output inductor L1 because electric current passes through storage power.And when the first derailing switch 142 is in the second mode of operation, input power V
iNwith the first output inductor L1 open circuit, one end of the first output inductor L1 starts to discharge storage power to load circuit 10, and gets back to the other end of the first output inductor L1 via diode D1.In like manner, the running of second switch device 144 is also like this, but its running is anti-phase with the first derailing switch 142.Therefore, the electric current I of first, second output inductor L1, L2 is flowed through
l1, I
l2can in turn to the output capacitance C of load circuit 10
ocharging, and by output capacitance C
ostable output voltage V is provided
o, to reach the Power convert of direct current to direct current.In addition, current detector 146 senses the electric current I by first, second output inductor L1, L2 respectively
l1, I
l2, and the electric current I that electric current back coupling processing module 130 senses according to current detector 146
l1, I
l2, immediately to adjust the work period of the control pulse wave sending first, second derailing switch 142,144 to, and avoid circuit element to damage because of overload.It should be noted that in the present embodiment that the control pulse wave being supplied to first, second derailing switch 142,144 is anti-phase each other, is the electric current I in order to make to flow through first, second output inductor L1, L2
l1, I
l2even to output capacitance C in time
ocharging.But those skilled in the art are when the phase difference that can be supplied to the control pulse wave of first, second derailing switch 142,144 with different application design, and be not limited with the phase difference in the present embodiment.
In the present embodiment, first derailing switch 142 can comprise the first high-side switch device Q1 and the first low side switch device Q2 that are one another in series, and second switch device 144 can comprise the second high-side switch device Q3 and the second low side switch device Q4 that are one another in series, and the conducting of derailing switch Q1, Q2, Q3 and Q4 or cut-off all controlled by control pulse wave.First low side switch device Q2 is in parallel with diode D1, and the second low side switch device Q4 is in parallel with diode D2.First, second low side switch device Q2, Q4 can the conductings when first, second derailing switch 142,144 is in the second mode of operation, replace diode D1, D2 as current path with lower forward bias voltage drop.And those skilled in the art are when can be clear, first, second low side switch device Q2, Q4 can comprise in one and connect diode (bodydiode), are can be omitted in certain embodiments with diode D1, D2.But in connect the energy loss under forward bias voltage drop of diode usually large compared with general diode, be with in the present embodiment still parallel diode D1, D2 on first, second low side switch device Q2, Q4.
Current detector 146 can be a circuit structure, and it can comprise the first resistance R1, the first electric capacity C1, the second resistance R2, the second electric capacity C2 and the 3rd resistance R3.The first end of the first resistance R1, the node that the first end of the first output inductor L1 and the first high-side switch device Q1 connect the first low side switch device Q2 is coupled to each other, second end of the first resistance R1 couples the first end of the first electric capacity C1, second end of the first electric capacity C1 couples the first end of the 3rd resistance R3, the first end of the second resistance R2, the node that the first end of the second output inductor L2 and the second high-side switch device Q3 connect the second low side switch device Q4 is coupled to each other, second end of the second resistance R2 couples the first end of the second electric capacity C2, second end of the second electric capacity C2 couples the first end of the 3rd resistance R3, and second end of the 3rd resistance R3, second end of the first output inductor L1, second end and the load circuit 10 of the second output inductor L2 are coupled to each other.Those skilled in the art work as can be clear, and the first electric capacity C1 be wherein one another in series and the position of the first resistance R1 can be exchanged and the not substantial change of forming circuit each other, and the position of the second electric capacity C2 be one another in series and the second resistance R2 also can be exchanged each other.Be may directly or indirectly be coupled between the first electric capacity C1 and load circuit 10 with the 3rd resistance R3, and the 3rd resistance R3 also may directly or indirectly be coupled between the second electric capacity C2 and load circuit 10.
Multi-phase DC-DC power converter 100 circuit diagram of Fig. 2 for illustrating according to one embodiment of the invention.The embodiment that the present embodiment and Fig. 1 illustrate is roughly similar, therefore does not repeat.Both are difference, and in the present embodiment, first, second low side switch device Q2, Q4 can replace with diode D3, D4.Thus, then pulse wave width modulation module 120 additionally must not provide and control pulse wave with first, second low side switch device of conducting Q2, Q4, therefore can reduce the complexity that pulse wave width modulation module 120 designs.
In addition, in some other embodiment, multi-phase DC-DC power converter 100 also can comprise voltage feedback processing module 150 and division module R
f1, R
f2.Division module R
f1, R
f2in order to disperse direct current, the output voltage V of load circuit 10 is bestowed to DC power supply modular converter 140
o, comprise the first divider resistance R
f1and the second divider resistance R
f2, wherein the first divider resistance R
f1with the second divider resistance R
f2be one another in series, and voltage feedback processing module 150 is according to the second divider resistance R
f2on cross-pressure control work period of pulse wave to make pulse wave width modulation module 120 adjustment.By voltage feedback processing module 150 and division module R
f1, R
f2setting, pulse wave width modulation module 120 can simultaneously by output current and output voltage, to adjust the work period controlling pulse wave, and avoid the electronic component in this circuit to damage because of overload.
Be easier to for making the present invention be understood, below by way of Fig. 3 to further illustrate the running of current detector 146.The equivalent circuit diagram of Fig. 3 for illustrating according to the current detector 146 in Fig. 1.Wherein V
l1, V
l2for the cross-pressure at first, second output inductor L1, L2 two ends, and first, second output inductor L1, L2 are except own inductance value L1L and L2L, also comprise winding impedance (woundresistance) DCR1 and the DCR2 of first, second output inductor L1, L2.To make the product of the resistance value of the first resistance R1, the capacitance of the first electric capacity C1 and the resistance value of resistance DCR1 be the inductance value of the first output inductor L1 by design, then the cross-pressure V at the first electric capacity C1 two ends
c1roughly can be proportional to the electric current I flowing through the first output inductor L1
l1.And the product of the resistance value of the second resistance R2, the capacitance of the second electric capacity C2 and the resistance value of resistance DCR2 is the inductance value of the second output inductor L2, then the cross-pressure V at the second electric capacity C2 two ends
c2roughly can be proportional to the electric current I flowing through the second output inductor L2
l2.Therefore, according to the cross-pressure V at first, second electric capacity C1, C2 two ends
c1, V
c2, current detector 146 can record the electric current I flowing through first, second output inductor L1, L2
l1, I
l2.
In addition, the 3rd resistance R3 intercepts between the first electric capacity C1 and load circuit 10, and intercepts between the second electric capacity C2 and load circuit 10, is to work as V
l1for high potential and V
l2for electronegative potential, make the first electric capacity C1 be in charged state and the second electric capacity C2 is in discharge condition time, and be first electric capacity C1 charge electric current I
c1part flows to the second electric capacity C2 and the second resistance R2, as electric current I
c1, C2(I
c1remaining current direction the 3rd resistance R3, as electric current I
c1, R3).Work as V
l1for electronegative potential V
l2for high potential, make the second electric capacity C2 be in charged state and the first electric capacity C1 is in discharge condition time, be second electric capacity C2 charge electric current I
c2part flows to the first electric capacity C1 and the first resistance R1, as electric current I
c2, C1(I
c2remaining current direction the 3rd resistance R3, as electric current I
c2, R3).
In addition, if in the electric current I flowing through first, second output inductor L1, L2
l1, I
l2for under discontinuous situation, by the discharge and recharge each other of above-mentioned first electric capacity C1 and the second electric capacity C2, the cross-pressure V at the first electric capacity C1 two ends can be made
c1be down to the time-lag at zero point in the electric current I flowing through the first output inductor L1
l1be down to the time at zero point, and the cross-pressure voltage V at the second electric capacity C2 two ends
c2be down to the time-lag at zero point in the electric current I flowing through the second output inductor L2
l2be down to the time at zero point.When the resistance value of the 3rd resistance R3 is larger, then voltage V
c1, V
c2be down to the time-lag electric current I at zero point
l1, I
l2the time of being down to zero point is more.First, second output inductor I sensed by current detector 146 with the resistance value adjustable of the 3rd resistance R3
l1, I
l2electric current be (that is voltage V at zero point
c1, V
c2for zero point) with actual flow through the electric current I of this first, second output inductor L1, L2
l1, I
l2for time difference during zero point.
The electric current I that flow through first, second output inductor L1, L2 of Fig. 4 for illustrating according to the multi-phase DC-DC power converter 100 of Fig. 1
l1, I
l2, first, second electric capacity C1, C2 two ends cross-pressure V
c1, V
c2, flow through the electric current I of first, second electric capacity C1, C2
c1, I
c2and flow through the electric current I of the 3rd resistance R3
r3simulation drawing.As shown in Figure 4, the cross-pressure V at first, second electric capacity C1, C2 two ends
c1, V
c2roughly be proportional to the electric current I flowing through first, second output inductor L1, L2
l1, I
l2.In period T1, input power V
iNbe coupled to the first output inductor L1, the first electric capacity C1 is charged state, flows through the electric current I of the first electric capacity C1
c1with the electric current I flowing through the 3rd resistance R3
r3for positive current, and flow through the electric current I of the second electric capacity C2
c2for negative current.In period T2, input power V
iNwith the first output inductor L1 open circuit, the first electric capacity C1 is discharge condition, flows through the electric current I of the first electric capacity C1
c1with the electric current I flowing through the 3rd resistance R3
r3for negative current.In like manner, in period T3, input power V
iNbe coupled to the second output inductor L2, the second electric capacity C2 is charged state, flows through the electric current I of the second electric capacity C2
c2with the electric current I flowing through the 3rd resistance R3
r3for positive current, and the electric current I C1 flowing through the first electric capacity C1 is negative current.In period T4, input power V
iNwith the second output inductor L2 open circuit, the second electric capacity C2 is discharge condition, flows through the electric current I of the second electric capacity C2
c2with the electric current I flowing through the 3rd resistance R3
r3for negative current.
Fig. 5 is the multi-phase DC-DC power converter 100 illustrating Fig. 1, when the electric current flowing through the first output inductor L1 is discontinuous and the 3rd resistance R3 is 2k Ω, flows through the electric current I of the first output inductor L1
l1with the cross-pressure V on the first electric capacity C1
c1simulation drawing.As shown in Figure 5, the electric current I of the first output inductor L1 is flowed through
l1time point when arriving at zero point is t
0, IL1, the cross-pressure V on the first electric capacity C1
c1time point when arriving at zero point is t
0, VC1.Time point t
0, IL1with t
0VC1time difference can in order to finely tune multi-phase DC-DC power converter 100, for example, adjustable controls the opportunity that pulse wave closes first, second low side switch device Q2, Q4.When the 3rd resistance R3 is larger, then time point t
0, IL1with t
0, VC1between time difference larger, vice versa.And be avoid making the cross-pressure V on the first electric capacity C1
c1with the electric current I flowing through the first output inductor L1
l1difference is excessive, and the resistance value of the 3rd resistance R3 is less than or equal to the resistance value of the first resistance R1, and the resistance value of the 3rd resistance R3 is less than or equal to the resistance value of the second resistance R2.When the 3rd resistance R3 is 0 Ω, then time point t
0, IL1with t
0, VC1the same, and voltage V
c1be proportional to electric current I
l1, as shown in Figure 6.
Although the present invention discloses as above with embodiment; so itself and be not used to limit the present invention, be anyly familiar with this those skilled in the art, without departing from the spirit and scope of the present invention; when being used for a variety of modifications and variations, the scope that therefore protection scope of the present invention ought define depending on appending claims is as the criterion.
Claims (9)
1. a multi-phase DC-DC power converter, is characterized in that, comprising:
One pulse wave width modulation module, controls pulse wave in order to produce many groups;
One electric current back coupling processing module; And
At least one direct current, to DC power supply modular converter, comprising:
One first output inductor;
One second output inductor;
One first derailing switch, couples this first output inductor, and this first derailing switch receives this control pulse wave to control the electric current of this first output inductor;
One second switch device, couples this second output inductor, and this second switch device receives another this control pulse wave to control the electric current of this second output inductor; And
One current detector, be parallel to this first, second output inductor, in order to sense the electric current by this first output inductor and this second output inductor, wherein this electric current feedbacks processing module according to sensed electric current, immediately to adjust the work period that those control pulse wave, and wherein this current detector comprises: one first resistance, one first electric capacity, one second resistance, one second electric capacity and one the 3rd resistance, this first electric capacity of this first resistant series, this second electric capacity of this second resistant series, 3rd resistance is directly or indirectly coupled between this first electric capacity and a load circuit, and the 3rd resistance is directly or indirectly coupled between this second electric capacity and this load circuit, make when this first electric capacity is in charged state, this the second electric capacity is flowed through to a charging current part of this first capacitor charging, and make when this second electric capacity is in charged state, this the first electric capacity is flowed through to another charging current part of this second capacitor charging,
Wherein the resistance value of the 3rd resistance is less than or equal to the resistance value of this first resistance, and the resistance value of the 3rd resistance is less than or equal to the resistance value of this second resistance.
2. multi-phase DC-DC power converter according to claim 1, it is characterized in that, the first end of this first resistance, the first end of this first output inductor and this first derailing switch are coupled to each other, second end of this first resistance couples the first end of this first electric capacity, second end of this first electric capacity couples the first end of the 3rd resistance, and the second end of the 3rd resistance, the second end of this first output inductor, the second end of this second output inductor and this load circuit are coupled to each other.
3. multi-phase DC-DC power converter according to claim 1, it is characterized in that, the first end of this second resistance, the first end of this second output inductor and this second switch device are coupled to each other, second end of this second resistance couples the first end of this second electric capacity, second end of this second electric capacity couples the first end of the 3rd resistance, and the second end of the 3rd resistance, the second end of this first output inductor, the second end of this second output inductor and this load circuit are coupled to each other.
4. multi-phase DC-DC power converter according to claim 1, is characterized in that, anti-phase with the control pulse wave in order to control this second switch device in order to the control pulse wave controlling this first derailing switch.
5. multi-phase DC-DC power converter according to claim 1, is characterized in that, when this first electric capacity is in charged state, this second electric capacity is discharge condition; And when this second electric capacity is in charged state, this first electric capacity is discharge condition.
6. multi-phase DC-DC power converter according to claim 1, is characterized in that, this first derailing switch comprises one first high-side switch device, and this second switch device comprises one second high-side switch device.
7. multi-phase DC-DC power converter according to claim 6, it is characterized in that, this first derailing switch also comprises one first low side switch device, couples this first high-side switch device, and wherein this second switch device also comprises one second low side switch device, couple this second high-side switch device.
8. multi-phase DC-DC power converter according to claim 1, it is characterized in that, the time difference that the resistance value of the 3rd resistance is this current detector of adjustable when being zero point with the electric current actually by this first, second output inductor when to sense by the current value of this first, second output inductor be zero point.
9. multi-phase DC-DC power converter according to claim 1, also comprises:
One voltage feedback processing module; And
One division module, in order to disperse this direct current, one output voltage of this load circuit is bestowed to DC power supply modular converter, comprise one first divider resistance and one second divider resistance, wherein this first divider resistance and this second divider resistance are one another in series, and this voltage feedback processing module controls work period of pulse waves according to the cross-pressure on this second divider resistance to make this pulse wave width modulation module adjust those.
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|---|---|---|---|
| CN201210230036.XA CN103532372B (en) | 2012-07-04 | 2012-07-04 | Multi-phase DC-DC power converter |
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|---|---|---|---|
| CN201210230036.XA CN103532372B (en) | 2012-07-04 | 2012-07-04 | Multi-phase DC-DC power converter |
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| CN103532372B true CN103532372B (en) | 2016-01-20 |
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| DE102016216086A1 (en) * | 2016-08-26 | 2018-03-01 | Continental Automotive Gmbh | Method for operating two DC-DC converters in a vehicle electrical system and voltage converter circuit |
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| CN1265479A (en) * | 1998-12-24 | 2000-09-06 | 英特赛尔公司 | DC-DC inverter having inductive current test and related method |
| CN1609742A (en) * | 2003-10-20 | 2005-04-27 | 英特赛尔美国股份有限公司 | Clocked cascading current-mode regulator with high noise immunity and arbitrary phase count |
| CN101030728A (en) * | 2005-09-16 | 2007-09-05 | 国际整流器公司 | Multi-phase converter with improved load step-up transient response |
| CN101159413A (en) * | 2006-06-19 | 2008-04-09 | 国际整流器公司 | Multi-phase converter with frequency and phase timing control |
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| US7339361B2 (en) * | 2006-06-26 | 2008-03-04 | Intersil Americas Inc. | Multi-phase DC-DC converter using auxiliary resistor network to feed back multiple single-ended sensed currents to supervisory controller for balanced current-sharing among plural channels |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1265479A (en) * | 1998-12-24 | 2000-09-06 | 英特赛尔公司 | DC-DC inverter having inductive current test and related method |
| CN1609742A (en) * | 2003-10-20 | 2005-04-27 | 英特赛尔美国股份有限公司 | Clocked cascading current-mode regulator with high noise immunity and arbitrary phase count |
| CN101030728A (en) * | 2005-09-16 | 2007-09-05 | 国际整流器公司 | Multi-phase converter with improved load step-up transient response |
| CN101159413A (en) * | 2006-06-19 | 2008-04-09 | 国际整流器公司 | Multi-phase converter with frequency and phase timing control |
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