CN206250972U - BOOST booster circuits and supply unit - Google Patents
BOOST booster circuits and supply unit Download PDFInfo
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- CN206250972U CN206250972U CN201621359773.XU CN201621359773U CN206250972U CN 206250972 U CN206250972 U CN 206250972U CN 201621359773 U CN201621359773 U CN 201621359773U CN 206250972 U CN206250972 U CN 206250972U
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- booster circuits
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- pwm controller
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Abstract
The utility model discloses a kind of BOOST booster circuits and supply unit, including power input, PWM controller and power output end, PWM controller has driving pin, the BOOST booster circuits also include multiple boosting units being arranged in parallel, the input of each boosting unit is connected with power input respectively, the output end of each boosting unit is connected with power output end respectively, and each boosting unit is connected by drive end with the driving pin of PWM controller.The component that the utility model is solved in BOOST booster circuits causes supply unit temperature rise serious because power is too high, or even the problem being burned out.
Description
Technical field
The utility model is related to switch power technology field, more particularly to a kind of BOOST booster circuits and supply unit.
Background technology
At present, in the application of dc source, in order to ensure the output of relatively high power, BOOST booster circuits need will be straight
Exported again after stream power boost to certain proportion, will so cause to flow through the voltage and electric current of power device and semiconductor devices
It is larger and temperature rise is too high, so as to cause dc source hot, even there is the danger being burned out when serious.
Utility model content
Main purpose of the present utility model is to propose a kind of BOOST booster circuits and supply unit, it is intended to solve component
Cause dc source hot because temperature rise is too high, or even the problem being burned out.
To achieve the above object, the utility model proposes a kind of BOOST booster circuits, including power input, PWM control
Device processed and power output end, the PWM controller have driving pin, and the BOOST booster circuits also include：
The boosting unit that multiple is arranged in parallel, the input of each boosting unit connects with the power input respectively
Connect, the output end of each boosting unit is connected with the power output end respectively, each boosting unit by drive end with
The driving pin connection of the PWM controller.
Preferably, the PWM controller also has current detecting pin, and the boosting unit includes first resistor, the first electricity
Sense, the first electronic switch and the first diode, the first end of the first resistor are connected with the driving pin of the PWM controller,
Second end of the first resistor is connected with the controlled end of first electronic switch, the input of first electronic switch with
The first end of first inductance and first diode anode interconnection, the output end of first electronic switch with it is described
The current detecting pin connection of PWM controller；Second end of first inductance is connected with the power input, and the described 1st
The negative electrode of pole pipe is connected with the power output end.
Preferably, first electronic switch is the first metal-oxide-semiconductor, and the drain electrode of first metal-oxide-semiconductor is first electronics
The input of switch, the source electrode of first metal-oxide-semiconductor is the output end of first electronic switch, the grid of first metal-oxide-semiconductor
The controlled end of extremely described first electronic switch.
Preferably, the BOOST booster circuits also include the first electric capacity, first end and the power supply of first electric capacity
Input is connected, the second end ground connection of first electric capacity.
Preferably, the BOOST booster circuits also include the second electric capacity, the first end of second electric capacity and described first
The first end connection of electric capacity, the second end of second electric capacity is connected with the power output end.
Preferably, the BOOST booster circuits also include inspection leakage resistance, and the PWM controller also includes current detecting pin,
The inspection leakage resistance is arranged between the current detecting pin of the PWM controller and ground.
Preferably, the BOOST booster circuits also include feedback unit, and the PWM controller also includes that signal feeds back pin,
The test side of the feedback unit is connected with the power output end, the output end of the feedback unit and the PWM controller
Signal feedback pin connection.
Preferably, the feedback unit includes 3rd resistor and the 4th resistance, and the first end of the 3rd resistor is described
The test side of feedback unit, the second end of the 3rd resistor is through the 4th resistance eutral grounding；The 3rd resistor and described
The common port of four resistance is connected with the signal feedback pin of the PWM controller.
The utility model also proposes a kind of supply unit, and the supply unit includes BOOST booster circuits as described above,
The BOOST booster circuits include power input, PWM controller and power output end, and the PWM controller has driving pin,
The BOOST booster circuits also include multiple boosting units being arranged in parallel, the input of each boosting unit respectively with institute
Power input connection is stated, the output end of each boosting unit is connected with the power output end respectively, each boosting is single
Unit is connected by drive end with the driving pin of the PWM controller.
The utility model is arranged in parallel by by multiple structure identical boosting units so that the electricity at each boosting unit two ends
Pressure all same, and flow through the total electric current of BOOST booster circuits and be equal to the electric current sum for flowing through each boosting unit, so, needing
In meeting the BOOST booster circuits of high-power output, it is ensured that while output voltage is constant, BOOST booster circuits will be flowed through
Electric current is shunted by multiple boosting units, the electric current of each component in each boosting unit is flowed through to reduce, and then reduce
The power of each component, supply unit temperature rise is caused so as to solve the component in BOOST booster circuits because power is too high
Seriously, or even the problem that is burned out.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to the structure shown in these accompanying drawings.
Fig. 1 is the high-level schematic functional block diagram that the utility model BOOST booster circuits are applied in supply unit；
Fig. 2 is the electrical block diagram of BOOST booster circuits in Fig. 1.
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| Vin | Power input | L1A | First inductance |
| Vout | Power output end | D1A | First diode |
| 10 | Boosting unit | R1A | First resistor |
| 20 | PWM controller | L1B | Second inductance |
| 30 | Feedback unit | D1B | Second diode |
| 11A | First electronic switch | R1B | Second resistance |
| 11B | Second electronic switch | PWM | Drive pin |
| C1 | First electric capacity | CS | Current detecting pin |
| C2 | Second electric capacity | FB | Signal feeds back pin |
| Q1A | First metal-oxide-semiconductor | Q1B | Second metal-oxide-semiconductor |
| Rs1 | Inspection leakage resistance | R4 | 4th resistance |
| R3 | 3rd resistor |
The realization of the utility model purpose, functional characteristics and advantage will be described further referring to the drawings in conjunction with the embodiments.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of the utility model protection.
If it is to be appreciated that related in the utility model embodiment directionality indicate (such as upper and lower, left and right, it is preceding,
Afterwards ...), then directionality indicates to be only used for explaining relative between each part under a certain particular pose (as shown in drawings)
Position relationship, motion conditions etc., if the particular pose changes, directionality indicates also correspondingly to change therewith.
If in addition, relate to the description of " first ", " second " etc. in the utility model embodiment, should " first ", " the
Two " description etc. is only used for describing purpose, and it is not intended that indicating or implying its relative importance or implicit indicate meaning
The quantity of the technical characteristic for showing.Thus, " first " is defined, the feature of " second " can express or implicitly include at least one
Individual this feature.In addition, the technical scheme between each embodiment can be combined with each other, but must be with ordinary skill
Personnel can be implemented as basis, when the combination appearance of technical scheme is conflicting or cannot realize it will be understood that this technical side
The combination of case does not exist, not within the protection domain of the utility model requirement yet.
The utility model proposes a kind of BOOST booster circuits.BOOST booster circuits include PWM controller 20, the PWM
Controller 20 includes driving pin PWM, current detecting pin CS and signal feedback pin FB.
Wherein, the driving pin PWM of PWM controller 20 is used to export PWM drive signal to control boosting unit 10 pairs through electricity
The power supply of source input input is boosted, and the current detecting pin CS of PWM controller 20 is used to be input into detection BOOST booster circuits
The current detection signal of output current, the signal feedback pin FB of PWM controller 20 is used to be input into detection BOOST booster circuit outputs
The voltage detection signal of voltage.
Reference picture 1 and Fig. 2, in the embodiment of the utility model one, the BOOST booster circuits are also arranged in parallel including multiple
Boosting unit 10, the input of each boosting unit 10 is connected with the power input Vin respectively, and each boosting is single
Unit 10 output end be connected with the power output end Vout respectively, each boosting unit 10 by drive end and the PWM
The driving pin PWM connections of controller 20.
Each boosting unit 10 is based on the control of PWM controller 20, is exported in the driving pin PWM for receiving PWM controller 20
Drive signal when, by power input Vin be input into voltage boosted after export.
The utility model is arranged in parallel by by multiple structure identical boosting units 10 so that the two ends of each boosting unit 10
Voltage all same, and flow through the total electric current of BOOST booster circuits and be equal to and flow through the electric current sum of each boosting unit 10, so,
In the BOOST booster circuits for needing to meet high-power output, it is ensured that while output voltage is constant, BOOST boostings will be flowed through
The electric current of circuit passes through multiple boosting units 10 and is shunted, and the electricity of each component in each boosting unit 10 is flowed through to reduce
Stream, and then the power of each component is reduced, cause electricity because power is too high so as to solve the component in BOOST booster circuits
Source device temperature rise is serious, or even the problem being burned out.
Reference picture 2, in above-described embodiment, the boosting unit 10 can be two, or two or more, this implementation
Two are preferably in example, as shown in Figure 2.It should be noted that when multiple is set to, (Fig. 2 show to each boosting unit 10
One boosting unit 10A, the second boosting unit 10B) input be connected with power input Vin respectively, output end respectively with electricity
Source output terminal Vout connect, for the power supply of input to be boosted after export.
In the present embodiment, using two boosting units 10, the first boosting unit 10A and the second boosting unit are designated as respectively
10B.Specifically, as shown in Fig. 2 the first boosting unit 10A includes first resistor R1A, the first inductance L1A, the first electronic switch
The first end of 11A and the first diode D1A, the first resistor R1A is connected with the driving pin PWM of the PWM controller 20, institute
The second end for stating first resistor R1A is connected with the controlled end of the first electronic switch 11A, the first electronic switch 11A's
Input is interconnected with the first end of the first inductance L1A and the anode of the first diode D1A, first electronic switch
The output end of 11A is connected with the current detecting pin CS of the PWM controller 20；Second end of the first inductance L1A with it is described
Power input Vin is connected, and the negative electrode of the first diode D1A is connected with the power output end Vout.
Wherein, the first diode D1A preferably uses the less Schottky diode of forward voltage drop, so that more energy are defeated
Go out to power amplification system.First inductance L1A is used to convert electrical energy into Magnetic Energy Storage, and the first inductance L1A can be by multiple sizes
Identical inductance is arranged in series.In the present embodiment, the first electronic switch 11A preferably uses the first metal-oxide-semiconductor Q1A, specifically, described
The drain electrode of the first metal-oxide-semiconductor Q1A is the input of the first electronic switch 11A, and the source electrode of the first metal-oxide-semiconductor Q1A is described first
The output end of electronic switch 11A, the grid of the first metal-oxide-semiconductor Q1A is the controlled end of the first electronic switch 11A.First metal-oxide-semiconductor
Q1A is based on the control of PWM controller 20, when the PWM drive signal of the output of PWM controller 20 is received, turn on/close
It is disconnected.Certainly in other embodiments, the first electronic switch 11A can also be implemented using other power tubes, and this is not restricted.
Specifically, when PWM controller 20 is when driving drive signal driving the first metal-oxide-semiconductor Q1A conductings of pin PWM outputs,
Due to the buffer action of the first diode D1A, i.e., when the first electronic switch 11A is closed, the cathode voltage of the first diode D1A
Forced down than negative electricity, now the first reverse-biased cut-offs of diode D1A, the first inductance L1A converts electrical energy into magnetic energy and stored.
When PWM controller 20 is when driving PWM drive signal driving the first metal-oxide-semiconductor Q1A shut-offs of pin PWM outputs, now
First diode D1A forward conductions.The magnetic energy of storage is converted to electric field energy by the first inductance L1A, and this energy and input
Exported after obtaining suitable voltage after the first diode D1A carries out rectification after supply voltage superposition, because this voltage is
The magnetic energy of supply voltage and the first inductance L1A is converted to what is formed after the superposition of electric energy, so now output voltage is higher than input
Voltage, so as to complete the process to supply voltage boosting.
With continued reference to Fig. 2, in the present embodiment, the second boosting unit 10B in two boosting units 10 of use includes the
Two resistance R1B, the second inductance L1B, the second electronic switch 11B and the second diode D1B, the first end of the second resistance R1B
It is connected with the driving pin PWM of the PWM controller 20, second end of the second resistance R1B and the second electronic switch 11B
Controlled end connection, the first end and the described 2nd 2 of the input of the second electronic switch 11B and the second inductance L1B
The anode interconnection of pole pipe D1B, the output end of the second electronic switch 11B and the current detecting pin CS of the PWM controller 20
Connection；Second end of the second inductance L1B is connected with the power input Vin, the negative electrode of the second diode D1B with
The power output end Vout connections.
Wherein, the second diode D1B preferably uses the less Schottky diode of forward voltage drop, so that more energy are defeated
Go out to power amplification system.Second inductance L1B is used to convert electrical energy into Magnetic Energy Storage, and the second inductance L1B can be by multiple sizes
Identical inductance is arranged in series.In the present embodiment, the second electronic switch 11B preferably uses the second metal-oxide-semiconductor Q1B, the second metal-oxide-semiconductor
Q1B is based on the control of PWM controller 20, when the PWM drive signal of the output of PWM controller 20 is received, turn on/close
It is disconnected.Certainly in other embodiments, the second electronic switch 11B can also be implemented using other power tubes, and this is not restricted.
It is understood that due to the second boosting unit 10B with first boosting structure it is identical, therefore operation principle it is identical and
The technique effect for reaching is also identical, specifically can refer to the first boosting unit 10A, will not be repeated here.
It will also be appreciated that because the first boosting unit 10A is arranged in parallel with the second boosting unit 10B, therefore the first electricity
Sense L1A also corresponded to the second inductance L1B it is in parallel, because inductance in parallel be able to can reduce while guarantee inductance value
The volume of inductance.So, supply unit is also solved in order to ensure that powerful output is needed using the big electricity of inductive energy storage amount
Sense carries out energy storage, and the energy storage capacity of inductance is directly proportional to its volume, limits the problem of the integrally lightening development of supply unit.
Reference picture 2, in a preferred embodiment, the BOOST booster circuits also include the first electric capacity C1, first electricity
The first end for holding C1 is connected with the power input Vin, the second end ground connection of the first electric capacity C1.
In the present embodiment, according to electric capacity to the characteristic of alternating current impedance very little, the alternating current in dc source enters the first electricity
Hold C1 outputs to ground so that direct current obtains pure direct current, therefore the first electric capacity C1 can realize filtering the exchange in dc source
The purpose of composition.
With continued reference to Fig. 2, in above-described embodiment, the BOOST booster circuits still further comprise the second electric capacity C2, described
The first end of the second electric capacity C2 is connected with the first end of the first electric capacity C1, second end of the second electric capacity C2 and the electricity
Source output terminal Vout is connected.
In the present embodiment, due to larger by the DC voltage ripple after boosting, therefore according to the voltage at electric capacity two ends in electricity
The characteristic of transition is unable to when line state changes, the supply voltage after the second electric capacity C2 boosts boosted unit 10 is filtered
Smooth DC voltage is obtained after ripple.
It should be noted that the pressure voltage of electrochemical capacitor is directly proportional to its volume, that is to say, that the big electricity of pressure voltage
Container, its volume is also bigger, and the small volume of high pressure ceramic disc capacitor and heat-resist, but its capacity is smaller and high cost.For
While ensureing the voltage endurance capability requirement of capacitor, reduce the volume of capacitor, in the present embodiment, meet the electricity of capacitor
On the premise of capacity requirement, the first electric capacity C1 devices are arranged in series with the second electric capacity C2, it is ensured that the voltage endurance capability requirement of capacitor
While, reduce the volume of capacitor.
Reference picture 2, in a preferred embodiment, the BOOST booster circuits still further comprise inspection leakage resistance Rs1, institute
Inspection leakage resistance Rs1 is stated to be arranged between the current detecting pin CS of the PWM controller 20 and ground.
In the present embodiment, inspection leakage resistance Rs1 when the first metal-oxide-semiconductor Q1A and the second metal-oxide-semiconductor Q1B are turned on be arranged in parallel
First inductance L1A and the second inductance L1B connect, thus flow through the electric current of inspection leakage resistance Rs1 and the first inductance L1A being arranged in parallel with
Second inductance L1B is identical, namely identical with BOOST booster circuit output currents, and the current detecting pin CS of PWM controller 20 leads to
Cross the electric current flowed through on detection inspection leakage resistance Rs1, to realize that the electric current exported to BOOST booster circuits is detected, PW M controls
The current signal that device processed 20 is detected according to current detecting pin CS, controls the working condition of PWM controller 20, so as to ensure output
The stabilization of electric current.
Reference picture 2, in a preferred embodiment, the BOOST booster circuits can also include feedback unit 30, described
PWM controller 20 also includes that signal feeds back pin FB, and the test side of the feedback unit 30 is connected with the power output end Vout,
The output end of the feedback unit 30 is connected with the signal feedback pin FB of the PWM controller 20.
In the present embodiment, feedback unit 30 is used to detect the out-put supply of power output end Vout, and feedback signal is defeated
Go out to PWM controller 20, so that PWM controller 20 controls boosting unit 10 to export surely according to the output voltage values of feedback
Fixed supply voltage, it is constant to ensure supply voltage output.
Reference picture 2, in above-described embodiment, the feedback unit 30 is preferably using 3rd resistor R3 and the 4th resistance R4 come real
Apply, wherein, the first end of the 3rd resistor R3 is the test side of the feedback unit 30, second end of the 3rd resistor R3
It is grounded through the 4th resistance R4；The common port and the PWM controller 20 of the 3rd resistor R3 and the 4th resistance R4
Signal feedback pin FB connection.
Specifically, 3rd resistor R3 and the 4th resistance R4 series boostings, so that output feedback signal is to PWM controller 20
Signal feeds back pin FB, and to realize detecting the output voltage of BOOST booster circuits, PWM controller 20 is fed back according to signal
The detection signal of pin FB feedbacks, drives pin PWM to export corresponding PWM drive signal to drive the first metal-oxide-semiconductor Q1A and the through PWM
The ON/OFF of two metal-oxide-semiconductor Q1B, so as to ensure the stabilization of output voltage.
The utility model also proposes a kind of supply unit, and the supply unit includes above-mentioned BOOST booster circuits.Should
The detailed construction of BOOST booster circuits can refer to above-described embodiment, and here is omitted；It is understood that due in this reality
With having used above-mentioned BOOST booster circuits in novel electric appliance equipment, therefore, the embodiment of the utility model supply unit includes upper
Whole technical schemes of BOOST booster circuit whole embodiments are stated, and the technique effect for being reached is also identical, herein no longer
Repeat.
Preferred embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited,
It is every under inventive concept of the present utility model, the equivalent structure made using the utility model specification and accompanying drawing content is become
Change, or directly/be used in other related technical fields indirectly and be included in scope of patent protection of the present utility model.
Claims (9)
1. a kind of BOOST booster circuits, including power input, PWM controller and power output end, the PWM controller tool
There is driving pin, it is characterised in that the BOOST booster circuits also include：
The boosting unit that multiple is arranged in parallel, the input of each boosting unit is connected with the power input respectively, respectively
The output end of the boosting unit is connected with the power output end respectively, each boosting unit by drive end with it is described
The driving pin connection of PWM controller.
2. BOOST booster circuits as claimed in claim 1, it is characterised in that the PWM controller also has current detecting
Pin, the boosting unit includes first resistor, the first inductance, the first electronic switch and the first diode, the first resistor
First end is connected with the driving pin of the PWM controller, the second end of the first resistor and receiving for first electronic switch
The connection of control end, the input of first electronic switch and the first end of first inductance and the anode of first diode
Interconnection, the output end of first electronic switch is connected with the current detecting pin of the PWM controller；The of first inductance
Two ends are connected with the power input, and the negative electrode of first diode is connected with the power output end.
3. BOOST booster circuits as claimed in claim 2, it is characterised in that first electronic switch is the first metal-oxide-semiconductor,
The drain electrode of first metal-oxide-semiconductor is the input of first electronic switch, and the source electrode of first metal-oxide-semiconductor is the described first electricity
The output end of sub switch, the grid of first metal-oxide-semiconductor is the controlled end of first electronic switch.
4. BOOST booster circuits as claimed in claim 1, it is characterised in that the BOOST booster circuits also include the first electricity
Hold, the first end of first electric capacity is connected with the power input, the second end ground connection of first electric capacity.
5. BOOST booster circuits as claimed in claim 4, it is characterised in that the BOOST booster circuits also include the second electricity
Hold, the first end of second electric capacity is connected with the first end of first electric capacity, the second end of second electric capacity with it is described
Power output end is connected.
6. BOOST booster circuits as claimed in claim 1, it is characterised in that the BOOST booster circuits also include inspection stream electricity
Resistance, the PWM controller also includes current detecting pin, and the inspection leakage resistance is arranged at the current detecting pin of the PWM controller
Between ground.
7. BOOST booster circuits as described in claim 1 to 6 any one, it is characterised in that the BOOST booster circuits
Also include feedback unit, the PWM controller also includes that signal feeds back pin, and the test side of the feedback unit is defeated with the power supply
Go out end connection, the output end of the feedback unit is connected with the signal feedback pin of the PWM controller.
8. BOOST booster circuits as claimed in claim 7, it is characterised in that the feedback unit includes 3rd resistor and the
Four resistance, the first end of the 3rd resistor is the test side of the feedback unit, and the second end of the 3rd resistor is through described
4th resistance eutral grounding；The common port of the 3rd resistor and the 4th resistance connects with the signal feedback pin of the PWM controller
Connect.
9. a kind of supply unit, it is characterised in that the supply unit is included as described in claim 1 to 8 any one
BOOST booster circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621359773.XU CN206250972U (en) | 2016-12-12 | 2016-12-12 | BOOST booster circuits and supply unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621359773.XU CN206250972U (en) | 2016-12-12 | 2016-12-12 | BOOST booster circuits and supply unit |
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| Publication Number | Publication Date |
|---|---|
| CN206250972U true CN206250972U (en) | 2017-06-13 |
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ID=59006483
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621359773.XU Active CN206250972U (en) | 2016-12-12 | 2016-12-12 | BOOST booster circuits and supply unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024093488A1 (en) * | 2022-11-02 | 2024-05-10 | Oppo广东移动通信有限公司 | Power supply apparatus, system and method, and electronic device and readable storage medium |
-
2016
- 2016-12-12 CN CN201621359773.XU patent/CN206250972U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024093488A1 (en) * | 2022-11-02 | 2024-05-10 | Oppo广东移动通信有限公司 | Power supply apparatus, system and method, and electronic device and readable storage medium |
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