CN206060547U - A kind of dynamic regulating circuit, system and Switching Power Supply - Google Patents
A kind of dynamic regulating circuit, system and Switching Power Supply Download PDFInfo
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- CN206060547U CN206060547U CN201621088877.1U CN201621088877U CN206060547U CN 206060547 U CN206060547 U CN 206060547U CN 201621088877 U CN201621088877 U CN 201621088877U CN 206060547 U CN206060547 U CN 206060547U
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Abstract
The utility model discloses a kind of dynamic regulating circuit, system and Switching Power Supply, the dynamic regulating circuit also includes the given module of load feedback voltage initial value, for when the output voltage of Switching Power Supply is less than preset value, exporting a load feedback voltage initial value；Isobarically Control module, for calculating for controlling the interrupting time of the control pulse of power switch turn-on and turn-off according to the reference voltage of the given module output of load feedback voltage initial value and reference voltage, and then the output voltage of controlling switch power supply, wherein, power switch is used for the energy transmission of controlling switch power supply.This utility model is by putting an initial value to load feedback voltage, improve the DC operating points of the charger, so that Isobarically Control module output control pulse interrupting time reduce even zero so that the output voltage of charger can fast lifting, improve dynamic property.
Description
Technical field
This utility model is related to charge control technical field, more particularly to a kind of dynamic regulating circuit, system and switch
Power supply.
Background technology
With the fast development of electronic equipment (such as mobile phone) charger, user is also got over for the requirement of the performance of charger
Come higher.The stability of the line end voltage (namely being electrically charged end, such as mobile phone terminal) of charger is to weigh the performance of charger
One important indicator.
As depicted in figs. 1 and 2, wherein, Fig. 1 is a kind of circuit theory diagrams of charger of the prior art, and Fig. 2 is Fig. 1
The circuit theory diagrams of the Isobarically Control module in the charger of offer.Firstly the need of explanation, G8 is the whole charger of decision
Output DC operating points, load feedback voltage Vload be load monitoring module output one represent load weight signal,
When unloaded, Vload=0, with the increase of load, Vload linear rises, load increase to OCP (over current
Protect ion, over-current protection point) when, Vload reaches maximum；In prior art, when the normal unloaded operation of charger,
Vload=0, when cutting dynamic, namely load is switched to full load by unloaded moment, and dynamic regulating circuit is by pulse detection to line
After terminal voltage Vout is low, due to load monitoring module be unable to real-time response (cycle of monitoring pulse is usually Millisecond, and
The switch periods of power switch are usually Microsecond grade), at this moment Vload less fast response would generally come, therefore load prison
The Vload of control module output still can be maintained equal to zero state, and it is low to result in DC operating points, so as to further result in constant pressure
Control module can calculate the pulse for including interrupting time (Toff), so that line end voltage Vout continues to fall down, dynamic
Poor performance.
Therefore, how a kind of dynamic regulating circuit of the output dynamic property for improving charger, system and switch electricity are provided
Source is the problem that those skilled in the art need to solve at present.
Utility model content
The purpose of this utility model is to provide a kind of dynamic regulating circuit, by putting an initial value to load feedback voltage,
The DC operating points of the charger are improve, so that the interrupting time of the control pulse of Isobarically Control module output reduces even
Be zero so that the output voltage of charger can fast lifting, improve dynamic property；Of the present utility model another object is that carries
For a kind of Switching Power Supply and charge control system including above-mentioned dynamic regulating circuit.
To solve above-mentioned technical problem, this utility model provides a kind of dynamic regulating circuit, and for Switching Power Supply, this moves
State adjustment circuit includes load monitoring module and the given module of reference voltage, and the dynamic regulating circuit also includes：
Load feedback voltage initial value gives module, for when the output voltage of the Switching Power Supply is less than preset value, defeated
Go out a load feedback voltage initial value；
Isobarically Control module, for according to the load feedback voltage initial value and the given module output of the reference voltage
Reference voltage calculate for controlling the interrupting time of the control pulse of power switch turn-on and turn-off, and then control the switch
The output voltage of power supply, wherein, the power switch is used for the energy transmission for controlling the Switching Power Supply.
Preferably, the load feedback voltage initial value is specially the 30% of the maximum of the load feedback voltage.
Preferably, the Isobarically Control module is specifically included：
First end is connected with the given module of the load feedback voltage initial value and the load monitoring module respectively, second
End the second end respectively with second resistance, the first end of 3rd resistor and the inverting input of operational amplifier be connected first
Resistance；
The second resistance that the given module of first end and the reference voltage is connected, wherein, the first resistor and institute
State the DC operating points that voltage of the common port of second resistance in stable state is the Switching Power Supply；
Described in normal phase input end is connected with the first end of the first end and the second feedback resistance of the first feedback resistance respectively
Operational amplifier, wherein, the second end of first feedback resistance is connected with the Same Name of Ends of the auxiliary sideline circle of the transformator,
The second end ground connection of second feedback resistance；
Input is connected with the second end of the outfan and the 3rd resistor of the operational amplifier respectively, outfan
The voltage driver being connected with the input of voltage sample module；
The voltage sample module that outfan is connected with the inverting input of comparator；
In-phase input end is connected with interrupting time calculating voltage, the control pulse for generating controlling switch turn-on and turn-off
Interrupting time the comparator.
Preferably, the voltage sample module is specifically included：
The sampling that first end is connected with the first end of sampling capacitance as the input of the voltage sample module, the second end
Switch；
The sampling capacitance of the second end ground connection.
To solve above-mentioned technical problem, this utility model additionally provides a kind of Switching Power Supply, including such as above-mentioned any one institute
The dynamic regulating circuit stated.
To solve above-mentioned technical problem, this utility model additionally provides a kind of charge control system, including as described above
Switching Power Supply.
This utility model provides a kind of dynamic regulating circuit, detects the defeated of charger including when the dynamic regulating circuit
When going out voltage less than preset value, the given module of load feedback voltage initial value exports a load feedback voltage initial value immediately to constant pressure
Control module, Isobarically Control module is again according to load feedback voltage initial value and the reference voltage of the given module output of reference voltage
Calculate for control power switch turn-on and turn-off control pulse interrupting time, so as to realize by the control Pulse Width Control
The output voltage of charger, it is seen then that this utility model improves the charger by putting an initial value to load feedback voltage
DC operating points, so that the interrupting time of the control pulse of Isobarically Control module output reduces even zero so that charger
Output voltage can fast lifting, improve dynamic property.
This utility model additionally provides a kind of charge control system and Switching Power Supply, and beneficial effect is as above.
Description of the drawings
For the technical scheme being illustrated more clearly that in this utility model embodiment, below will be to prior art and embodiment
Needed for accompanying drawing to be used be briefly described, it should be apparent that, drawings in the following description are only of the present utility model
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with according to this
A little accompanying drawings obtain other accompanying drawings.
Fig. 1 is a kind of circuit theory diagrams of charger of the prior art；
The circuit theory diagrams of the Isobarically Control module in the charger that Fig. 2 is provided for Fig. 1；
A kind of structural representation of dynamic regulating circuit that Fig. 3 is provided for this utility model；
The structural representation of another kind of dynamic regulating circuit that Fig. 4 is provided for this utility model；
After the dynamic regulating circuit that employing this utility model that Fig. 5 is provided for this utility model is provided line end voltage with it is existing
The comparison diagram of the line end voltage in technology.
Specific embodiment
Core of the present utility model is to provide a kind of dynamic regulating circuit, by putting an initial value to load feedback voltage,
The DC operating points of the charger are improve, so that the interrupting time of the control pulse of Isobarically Control module output reduces even
Be zero so that the output voltage of charger can fast lifting, improve dynamic property；Another core of the present utility model is to carry
For a kind of Switching Power Supply and charge control system including above-mentioned dynamic regulating circuit.
It is to make purpose, technical scheme and the advantage of this utility model embodiment clearer, new below in conjunction with this practicality
Accompanying drawing in type embodiment, is clearly and completely described to the technical scheme in this utility model embodiment, it is clear that retouched
The embodiment stated is a part of embodiment of this utility model, rather than the embodiment of whole.Based on the enforcement in this utility model
Example, the every other embodiment obtained under the premise of creative work is not made by those of ordinary skill in the art are belonged to
The scope of this utility model protection.
Embodiment one
Fig. 3 is refer to, a kind of structural representation of dynamic regulating circuit that Fig. 3 is provided for this utility model, the dynamic are adjusted
Whole circuit is used for Switching Power Supply, and the dynamic regulating circuit includes load monitoring module 2 and the given module 1 of reference voltage, and this moves
State adjustment circuit also includes：
Load feedback voltage initial value gives module 3, for when the output voltage of Switching Power Supply is less than preset value, exporting one
Individual load feedback voltage initial value；
It is understood that when the normal unloaded operation of charger, load monitoring module 2 is exported to Isobarically Control module 4
Load feedback voltage Vload=0, when cutting dynamic, namely load is switched to full load by unloaded moment, and dynamic regulating circuit leads to
Extra pulse detect line end voltage Vout it is low after, now in theory for Vload should increase rapidly, improve DC operating points,
But actually Vload less fast response would generally come.In order to solve this problem, when the output voltage of charger is less than
During preset value, the given module 3 of load feedback voltage initial value can export a load feedback voltage initial value immediately to Isobarically Control mould
Block 4, so as to improve DC operating points.
In addition, though load feedback voltage initial value is bigger in theory, the dynamic property of charger is better, but considers
Also other circuits can be produced with side effect to excessive load feedback voltage initial value is increased suddenly, therefore, here as preferably
Ground, load feedback voltage initial value can be set to load feedback voltage maximum 30%, certainly, can also be specifically which
His numerical value, this utility model here are not particularly limited, and can realize the purpose of this utility model.
Isobarically Control module 4, for the benchmark according to load feedback voltage initial value and the given output of module 1 of reference voltage
Voltage is calculated for controlling the interrupting time of the control pulse of power switch turn-on and turn-off, and then the output of controlling switch power supply
Voltage, wherein, power switch is used for the energy transmission of controlling switch power supply.
It is understood that Isobarically Control module 4 is receiving load feedback voltage initial value VloadInitial valueAnd reference voltage
Interrupting time is calculated after reference voltage V ref of the output of given module 1, as load feedback voltage initial value given 3 moment of module is given
The load feedback voltage initial value Vload for going outInitial valueSo that interrupting time reduces even zero, so that the output voltage of charger
Vout increases, namely output rapid increase, optimizes dynamic property.Specifically, reference voltage V ref is a fixed reference
Voltage.
This utility model provides a kind of dynamic regulating circuit, detects the defeated of charger including when the dynamic regulating circuit
When going out voltage less than preset value, the given module of load feedback voltage initial value exports a load feedback voltage initial value immediately to constant pressure
Control module, Isobarically Control module is again according to load feedback voltage initial value and the reference voltage of the given module output of reference voltage
Calculate for control power switch turn-on and turn-off control pulse interrupting time, so as to realize by the control Pulse Width Control
The output voltage of charger, it is seen then that this utility model improves the charger by putting an initial value to load feedback voltage
DC operating points, so that the interrupting time of the control pulse of Isobarically Control module output reduces even zero so that charger
Output voltage can fast lifting, improve dynamic property.
Embodiment two
Refer to Fig. 4, the structural representation of another kind of dynamic regulating circuit that Fig. 4 is provided for this utility model, the dynamic
Adjustment circuit is on the basis of the dynamic regulating circuit that embodiment one is provided：
Preferably, load feedback voltage initial value is specially the 30% of the maximum of load feedback voltage.
Certainly, load feedback voltage initial value here can also be other numerical value, and this utility model here do not do particularly
Limit, determined according to practical situation.
In addition, when cutting dynamic, load is switched to fully loaded by unloaded moment, and dynamic regulating circuit is by pulse detection to exporting
After low, a load feedback voltage initial value is put to Vload immediately, at this moment G8 voltages will be raised, equivalent to having raised this
DC operating points in the case of kind, dynamic regulating circuit will calculate very little or no interrupting time (according to load feedback electricity
Pressure initial value is determining) pulse, now output will rapid increase, so as to optimize dynamic property.
Specifically, Isobarically Control module 4 is specifically included：
First end is connected with the given module 3 of load feedback voltage initial value and load monitoring module 2 respectively, the second end difference
First be connected with the inverting input at second end, the first end of 3rd resistor 44 and operational amplifier 43 of second resistance 42
Resistance 41；
The second resistance 42 that the given module 1 of first end and reference voltage is connected, wherein, first resistor 41 and second resistance 42
Voltage of the common port in stable state for Switching Power Supply DC operating points；
It is understood that DC operating points here namely the G8 in Fig. 4, determine the defeated of whole charge control system
Go out.
The computing that normal phase input end is connected with the first end of the first end and the second feedback resistance of the first feedback resistance respectively
Amplifier 43, wherein, the second end of the first feedback resistance is connected with the Same Name of Ends of the auxiliary sideline circle of transformator, the second feedback electricity
The second end ground connection of resistance；
Specifically, the common port of the first end connection of the first end and the second feedback resistance of the first feedback resistance here is
Feedback end FB in correspondence Fig. 4.
Input is connected with the second end of the outfan and 3rd resistor 44 of operational amplifier 43 respectively, outfan with electricity
The voltage driver 45 of the input connection of pressure sampling module 46；
Specifically, voltage driver 45 here plays strengthening electric current ability.
The voltage sample module 46 that outfan is connected with the inverting input of comparator 47；
In-phase input end is connected with interrupting time calculating voltage, the control pulse for generating controlling switch turn-on and turn-off
Interrupting time comparator 47.
Specifically, interrupting time here calculates voltage and corresponds to the G12 in Fig. 4.In addition, when Vload increases, DC work
Point G8 increases, and Vop reduces, and sampled voltage G11 reduces, and the output increase of comparator 47, final interrupting time generation module are calculated
The interrupting time for arriving reduces even zero.
Preferably, voltage sample module 46 is specifically included：
First end is opened as the sampling that the input of voltage sample module 46, the second end are connected with the first end of sampling capacitance
Close；
The sampling capacitance of the second end ground connection.
Specifically, Fig. 5, the dynamic adjustment electricity that Fig. 5 is provided for employing this utility model that this utility model is provided be refer to
The comparison diagram of line end voltage and line end voltage of the prior art behind road.
To solve above-mentioned technical problem, this utility model additionally provides a kind of Switching Power Supply, including such as above-mentioned any one
Dynamic regulating circuit.
For the introduction of the dynamic regulating circuit in the Switching Power Supply refer to above-described embodiment, this utility model here is not
Repeat again.
To solve above-mentioned technical problem, this utility model additionally provides a kind of charge control system, including opening described above
Powered-down source.
For the introduction of the dynamic regulating circuit in the charge control system refer to above-described embodiment, this utility model exists
This repeats no more.
In this specification, each embodiment is described by the way of progressive, and what each embodiment was stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.For method disclosed in embodiment
For, corresponding with chip disclosed in embodiment due to which, so description is fairly simple, related part is said referring to method part
It is bright.
Also, it should be noted that in this manual, such as first and second or the like relational terms be used merely to by
One entity or operation are made a distinction with another entity or operation, and are not necessarily required or implied these entities or operation
Between there is any this actual relation or order.And, term " including ", "comprising" or its any other variant are anticipated
Covering including for nonexcludability, so that a series of process, method, article or equipment including key elements not only includes that
A little key elements, but also including other key elements being not expressly set out, or also include for this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element for being limited by sentence "including a ...", does not arrange
Except also there is other identical element in including the process of the key element, method, article or equipment.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or use that this practicality is new
Type.Various modifications to these embodiments will be apparent for those skilled in the art, determined herein
The General Principle of justice can be realized in the case of without departing from spirit or scope of the present utility model in other embodiments.Cause
This, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (6)
1. a kind of dynamic regulating circuit, for Switching Power Supply, the dynamic regulating circuit includes load monitoring module and benchmark electricity
The given module of pressure, it is characterised in that the dynamic regulating circuit also includes：
Load feedback voltage initial value gives module, for when the output voltage of the Switching Power Supply is less than preset value, exporting one
Individual load feedback voltage initial value；
Isobarically Control module, for the base according to the load feedback voltage initial value and the given module output of the reference voltage
Quasi- voltage is calculated for controlling the interrupting time of the control pulse of power switch turn-on and turn-off, and then controls the Switching Power Supply
Output voltage, wherein, the power switch is used to control the energy transmission of the Switching Power Supply.
2. dynamic regulating circuit as claimed in claim 1, it is characterised in that the load feedback voltage initial value is specially described
The 30% of the maximum of load feedback voltage.
3. dynamic regulating circuit as claimed in claim 1, it is characterised in that the Isobarically Control module is specifically included：
First end is connected with the given module of the load feedback voltage initial value and the load monitoring module respectively, the second end point
First not be connected with the second end of second resistance, the first end of 3rd resistor and the inverting input of operational amplifier is electric
Resistance；
The second resistance that the given module of first end and the reference voltage is connected, wherein, the first resistor and described the
Voltage of the common port of two resistance in stable state is the DC operating points of the Switching Power Supply；
The computing that normal phase input end is connected with the first end of the first end and the second feedback resistance of the first feedback resistance respectively
Amplifier, wherein, the second end of first feedback resistance is connected with the Same Name of Ends of the auxiliary sideline circle of the transformator, described
The second end ground connection of the second feedback resistance；
Input is connected with the second end of the outfan and the 3rd resistor of the operational amplifier respectively, outfan with electricity
The voltage driver of the input connection of pressure sampling module；
The voltage sample module that outfan is connected with the inverting input of comparator；
In-phase input end and interrupting time calculate that voltage be connected, control pulse for generating controlling switch turn-on and turn-off is broken
The comparator of continuous time.
4. dynamic regulating circuit as claimed in claim 3, it is characterised in that the voltage sample module is specifically included：
First end is opened as the sampling that the input of the voltage sample module, the second end are connected with the first end of sampling capacitance
Close；
The sampling capacitance of the second end ground connection.
5. a kind of Switching Power Supply, it is characterised in that include the dynamic regulating circuit as described in any one of claim 1-4.
6. a kind of charge control system, it is characterised in that including Switching Power Supply as claimed in claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621088877.1U CN206060547U (en) | 2016-09-28 | 2016-09-28 | A kind of dynamic regulating circuit, system and Switching Power Supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621088877.1U CN206060547U (en) | 2016-09-28 | 2016-09-28 | A kind of dynamic regulating circuit, system and Switching Power Supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206060547U true CN206060547U (en) | 2017-03-29 |
Family
ID=58367772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621088877.1U Withdrawn - After Issue CN206060547U (en) | 2016-09-28 | 2016-09-28 | A kind of dynamic regulating circuit, system and Switching Power Supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206060547U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106411138A (en) * | 2016-09-28 | 2017-02-15 | 上海新进芯微电子有限公司 | Dynamic adjustment circuit, system and method and switching power supply |
| CN110677018A (en) * | 2019-10-31 | 2020-01-10 | 矽力杰半导体技术(杭州)有限公司 | Control circuit, control method and switching converter |
| TWI796869B (en) * | 2020-12-10 | 2023-03-21 | 美商茂力科技股份有限公司 | Adaptive constant on-time control circuit and switching converter and method thereof |
-
2016
- 2016-09-28 CN CN201621088877.1U patent/CN206060547U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106411138A (en) * | 2016-09-28 | 2017-02-15 | 上海新进芯微电子有限公司 | Dynamic adjustment circuit, system and method and switching power supply |
| CN106411138B (en) * | 2016-09-28 | 2019-02-26 | 上海新进芯微电子有限公司 | A kind of dynamic regulating circuit, system, method and Switching Power Supply |
| CN110677018A (en) * | 2019-10-31 | 2020-01-10 | 矽力杰半导体技术(杭州)有限公司 | Control circuit, control method and switching converter |
| TWI796869B (en) * | 2020-12-10 | 2023-03-21 | 美商茂力科技股份有限公司 | Adaptive constant on-time control circuit and switching converter and method thereof |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20170329 Effective date of abandoning: 20190226 |
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| AV01 | Patent right actively abandoned |