CN109120149A - Voltage raising and reducing charge pump, voltage management chip, device and method - Google Patents
Voltage raising and reducing charge pump, voltage management chip, device and method Download PDFInfo
- Publication number
- CN109120149A CN109120149A CN201811145022.1A CN201811145022A CN109120149A CN 109120149 A CN109120149 A CN 109120149A CN 201811145022 A CN201811145022 A CN 201811145022A CN 109120149 A CN109120149 A CN 109120149A
- Authority
- CN
- China
- Prior art keywords
- voltage
- switch
- charge pump
- phase sequence
- port
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000006837 decompression Effects 0.000 claims abstract description 108
- 238000000819 phase cycle Methods 0.000 claims description 122
- 238000007726 management method Methods 0.000 claims description 35
- 238000003491 array Methods 0.000 claims description 28
- 239000003990 capacitor Substances 0.000 claims description 26
- 230000005611 electricity Effects 0.000 claims description 17
- 239000013643 reference control Substances 0.000 claims description 5
- 230000000052 comparative effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 16
- 240000002853 Nelumbo nucifera Species 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000007723 die pressing method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 244000131316 Panax pseudoginseng Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
- H02M3/072—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps adapted to generate an output voltage whose value is lower than the input voltage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention discloses a kind of voltage raising and reducing charge pumps, voltage management chip, device and method, voltage raising and reducing charge pump only needs a charge-discharge circuit and five groups of switches, the function of boosting and decompression can be realized, simplify the structure of charge pump, it is greatly saved cost, reduces system power dissipation, improve system effectiveness, the technical issues of increasing the use and stand-by time of battery (group), can not working when low efficiency, supply voltage are low when overcoming high using supply voltage existing for linear voltage regulator in existing power supply management application.
Description
Technical field
The present invention relates to Analogous Integrated Electronic Circuits technical field more particularly to a kind of voltage raising and reducing charge pumps, voltage management core
Piece, device and method.
Background technique
Current motor drives industry, and much application is powered using battery (group), when battery (group) electricity abundance, output voltage
Height, with the decline of battery (group) storing electricity, supply voltage can also decline accordingly, it might even be possible to drop below 50%.
Existing voltage management chip realizes the reduced output voltage of DC to DC using linear voltage regulator, and there are two drawbacks: one
It is in battery (group) electricity abundance, the difference comparsion between input voltage and output voltage is big, and the loss of linear voltage regulator is big,
Efficiency is very low, and reduce battery (group) uses time and stand-by time；Second is that input voltage is low when battery (group) electricity is low
In output voltage, linear voltage regulator cannot provide enough output again.
As charge pump is set in the system for needing battery, such as cellular phone, pager, Bluetooth system and portable electronic
Standby extensive utilization, the output power and efficiency of charge pump are also developed.Mainly application includes that driving is used for hand to charge pump
White light LEDs and the digital processing unit of milliwatt range of machine backlight etc..But existing intelligent electric power management (power manager) is answered
In, need to use two kinds of charge pumps of boosting and decompression, each charge pump needs a winged capacitor and four groups of switches.
How the function of boosting and decompression was not only realized, but also the structure of charge pump is made simply to become existing intelligent power pipe
Technical problem urgently to be resolved in ought to using.
Summary of the invention
It is an object of the present invention to for the technical problems in the prior art, provide a kind of voltage raising and reducing charge pump,
Voltage management chip, device and method only need a small amount of component to can be achieved with the function of boosting and be depressured, and simplify the knot of charge pump
Structure reduces system power dissipation.
To achieve the above object, the present invention provides a kind of voltage raising and reducing charge pump, the voltage raising and reducing charge pump is used for
Reception boost mode control signal, which switches to boost mode or receives decompression mode control signal, switches to decompression mode；It is rising
When die pressing type, the voltage raising and reducing charge pump receives target boost voltage, carries out Bootstrap to the target boost voltage and obtains
It takes the second reference voltage and exports；In decompression mode, the voltage raising and reducing charge pump receives input supply voltage, to described defeated
Enter supply voltage to carry out decompression the first reference voltage of acquisition and export.
To achieve the above object, the present invention also provides a kind of voltage management chip, the voltage management chip includes this
The invention voltage raising and reducing charge pump.
To achieve the above object, the present invention also provides a kind of voltage management device, the voltage management device includes this
The invention voltage raising and reducing charge pump.
To achieve the above object, the present invention also provides a kind of voltage management method, described method includes following steps:
(1) voltage raising and reducing charge pump receives boost mode control signal and switches to boost mode, or receives decompression mode control letter
Number and switch to decompression mode；(2) in boost mode, the voltage raising and reducing charge pump receives target boost voltage, to described
Target boost voltage carries out Bootstrap, obtains the second reference voltage and exports；(3) in decompression mode, the voltage raising and reducing
Charge pump receives input supply voltage, is depressured to the input supply voltage, obtains the first reference voltage and exports.
The present invention has the advantages that the present invention by introducing voltage raising and reducing charge pump, when supply voltage is lower, rises
Pressure drop presses charge pump to carry out output voltage in boost mode progress Bootstrap, when supply voltage is higher, boosting drop
Pressure charge pump is depressured in decompression mode carrys out output voltage, overcomes in existing power supply management application using linear voltage stabilization
The technical issues of can not working when low efficiency, supply voltage are low when supply voltage existing for device is high；And boosting provided by the invention
Step-down charge pump only needs a charge-discharge circuit and five groups of switches, and the function of boosting and decompression can be realized, simplify charge
The structure of pump is greatly saved cost, reduces system power dissipation, improves system effectiveness, increases the use of battery (group)
And stand-by time.The present invention can also realize closed loop controlled buck control, and the duty ratio of signal can be controlled by control switch
To realize the size of adjustment output voltage.
Detailed description of the invention
Fig. 1, the configuration diagram of voltage raising and reducing charge pump of the present invention；
Fig. 2, the circuit diagram of an embodiment of voltage raising and reducing charge pump of the present invention；
Fig. 3 A, the circuit diagram of voltage raising and reducing charge pump when simplified boost mode；
Fig. 3 B is part of nodes waveform diagram in circuit shown in Fig. 3 A；
Fig. 4 A, the circuit diagram of voltage raising and reducing charge pump when simplified decompression mode；
Fig. 4 B is part of nodes waveform diagram in circuit shown in Fig. 4 A；
Fig. 5, the flow chart of voltage management method of the present invention.
Specific embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.This
Outside, present invention repeat reference numerals and/or reference letter in different examples, this repetition are for simplified and clear mesh
, the relationship between discussed various embodiments and/or setting itself is not indicated.
Voltage raising and reducing charge pump of the present invention, by receive boost mode control signal switch to boost mode or
It receives decompression mode control signal and switches to decompression mode；In boost mode, the voltage raising and reducing charge pump receives target liter
Piezoelectricity pressure carries out Bootstrap the second reference voltage of acquisition to the target boost voltage and exports；It is described in decompression mode
Voltage raising and reducing charge pump receives input supply voltage, carries out decompression to the input supply voltage and obtains the first reference voltage and defeated
Out.Wherein, input supply voltage is greater than target boost voltage, less than the pressure resistance of intelligent electric power management device；Target boost voltage
It such as can be the 5V voltage in intelligent power.
Voltage raising and reducing charge pump provided by the invention, when supply voltage is lower, voltage raising and reducing charge pump exists
Boost mode carries out Bootstrap and carrys out output voltage, and when supply voltage is higher, voltage raising and reducing charge pump is being depressured
Mode, which is depressured, carrys out output voltage, overcomes high using supply voltage existing for linear voltage regulator in existing power supply management application
When low efficiency, supply voltage it is low when the technical issues of can not working.
With reference to Fig. 1, the configuration diagram of voltage raising and reducing charge pump of the present invention.The voltage raising and reducing charge pump packet
Include ON-OFF control circuit 11, switch arrays 12 and charge-discharge circuit 13.
The ON-OFF control circuit (Switch Control circuit) 11, for passing through the voltage raising and reducing charge pump
The 4th port Port-D receive boost mode control signal switch to boost mode or receive decompression mode control signal cut
Decompression mode is shifted to, and for receiving a clock signal clk, according to the phase sequence time reference control of the clock signal clk
Make the switch state switched in the switch arrays 12.
In boost mode, the ON-OFF control circuit 11 controls the switch arrays 12 according to the phase sequence time reference
Switch carry out closing or opening, pass through the second port of the voltage raising and reducing charge pump to control the charge-discharge circuit 13
Port-B receives the target boost voltage V1 and carries out Bootstrap to the target boost voltage, obtains second base
Quasi- voltage V2 is exported from the third port Port-C of the voltage raising and reducing charge pump.
In decompression mode, the ON-OFF control circuit 11 controls the switch arrays 12 according to the phase sequence time reference
Switch carry out closing or opening, pass through the first port of the voltage raising and reducing charge pump to control the charge-discharge circuit 13
Port-A receives the input supply voltage VIN and is depressured to the input supply voltage VIN, obtains first base
Quasi- voltage V1 is exported from the second port Port-B.Wherein, target boost voltage V1 and the first reference voltage V1 can be same
One voltage value.
Voltage raising and reducing charge pump provided by the invention only needs a charge-discharge circuit and a switch arrays, can be realized
The function of boosting and decompression, simplifies the structure of charge pump, is greatly saved cost, reduces system power dissipation, improves and is
System efficiency, increases the use and stand-by time of battery (group).
The charge-discharge circuit 13 can realize the function (i.e. removal capacitor) of capacitor, such charge and discharge digitally
Circuit 13 can integrate in the chips.The charge-discharge circuit 13 also may include a capacitor, and capacitor passes through switch arrays
12 access voltage raising and reducing charge pumps.
Optionally, the voltage raising and reducing charge pump further includes clock generating unit 14；Clock generating unit 14 is for exporting
Clock signal clk, to provide the phase sequence time reference for controlling the switch state switched in the switch arrays.Clock generating unit
14 can be an oscillator (Oscillator).In other embodiments, clock signal clk can also be generated by external circuit.
Preferably, the voltage raising and reducing charge pump further includes first voltage comparator CP1；First voltage comparator CP1's
First input end is electrically connected to the second port Port-B of voltage raising and reducing charge pump, and the second input terminal is for receiving one with reference to electricity
VREF is pressed, and its output end is electrically connected to ON-OFF control circuit 11.First voltage comparator CP1 in decompression mode for receiving
First reference voltage V1 of second port Port-B acquisition is simultaneously compared with reference voltage VREF, and is based on the first comparison result
Output first control signal turns off the switch control circuit 11；And it is opened based on the output second control signal starting of the second comparison result
Control circuit 11 is closed, realizes closed-loop control, keeps the first reference voltage V1 and reference voltage VREF dynamic equal.Specifically,
When one reference voltage V1 is more than or equal to reference voltage VREF, first voltage comparator CP1 obtains the first comparison result；In the first base
When quasi- voltage V1 is less than reference voltage VREF, first voltage comparator CP1 obtains the second comparison result；By introducing first voltage
Comparator CP1, the present invention can also realize closed loop controlled buck control.
With reference to Fig. 2, Fig. 3 A-3B and Fig. 4 A-4B, wherein Fig. 2 is a reality of voltage raising and reducing charge pump of the present invention
The circuit diagram of example is applied, the circuit diagram of voltage raising and reducing charge pump when Fig. 3 A is simplified boost mode, Fig. 3 B is shown in Fig. 3 A
Part of nodes waveform diagram in circuit, the circuit diagram of voltage raising and reducing charge pump when Fig. 4 A is simplified decompression mode, figure
4B is part of nodes waveform diagram in circuit shown in Fig. 4 A.In the present embodiment, there are four ports for voltage raising and reducing charge pump tool
(pin), respectively first port Port-A, second port Port-B, third port Port-C and the 4th port Port-D；
The function of boosting and decompression can be realized by a charge-discharge circuit and five groups of switches in voltage raising and reducing charge pump.
Specifically, the ON-OFF control circuit 11, for the 4th port Port-D by the voltage raising and reducing charge pump
Reception boost mode control signal Low, which switches to boost mode or receives decompression mode control signal High, switches to decompression mould
Formula, and for receiving a clock signal clk, to control the switch according to the phase sequence time reference of the clock signal clk
The switch state switched in array 12.Wherein, by the way that input supply voltage VIN to be compared with a pattern switching voltage VTH,
And output boost mode control signal or decompression mode control signal based on comparative result.Specifically, working as input supply voltage
When VIN is less than pattern switching voltage VTH, output boost mode controls signal High；When input supply voltage VIN is more than or equal to mould
When formula switches voltage VTH, output buck mode control signal Low.
Specifically, switch arrays 12, including five groups of switch S1-S5: one end of first switch S1 is electrically connected to first port
Port-A, the other end are electrically connected to the first node P1 of switch arrays 12；One end of second switch S2 is electrically connected to first segment
Point P1, the other end are electrically connected to second port Port-B；One end of third switch S3 is grounded, and the other end is electrically connected to switch
The second node P2 of array 12；One end of 4th switch S4 is electrically connected to second node P2, and the other end is electrically connected to second end
Mouth Port-B；One end of 5th switch S0 is electrically connected to the first node P1, and the other end is electrically connected to the third port
Port-C。
Charge-discharge circuit 13 is serially connected between first node P1 and second node P2.Specifically, charge-discharge circuit 13 uses
Capacitor C1 carries out the charge and discharge of input voltage, and the top crown of capacitor C1 is electrically connected to first node P1, and bottom crown is electrically connected
It is connected to second node P2.
Specifically, clock generating unit 124 (selectable unit (SU)) can be an oscillator (Oscillator), oscillator output
High frequency clock CLK, to provide the phase sequence time reference of switch S0~S4.
In boost mode, ON-OFF control circuit 11 controls first switch S1 and disconnects always, while according to the phase sequence time
Benchmark controls the 5th switch S0, second switch S2, third switch S3, the 4th switch S4 and turns off or be closed, so that described fill
Discharge circuit 13 receives target boost voltage by the second port Port-B and boots to the target boost voltage
Boosting obtains the second reference voltage V2 and exports from the third port Port-C.That is, when supply voltage is low, voltage raising and reducing
Charge pump disconnects always in Bootstrap mode, switch S1, and target boost voltage V1 is inputted by the port Port-B, after boosting
Voltage V2 is exported by the end Port-C, and the circuit diagram of voltage raising and reducing charge pump is as shown in Figure 3A when simplified boost mode.
Specifically, the phase sequence time reference includes the first boosting phase sequence and the second boosting phase sequence.In first boosting
Phase sequence, the ON-OFF control circuit 11 control the second switch S2, third switch S3 closure, while controlling the 5th switch
S0, the 4th switch S4 are disconnected, so that described in the charge-discharge circuit 13 is serially connected in by the second switch S2, third switch S3
Between second port Port-B and ground terminal GND, charged with receiving the target boost voltage V1.In the second boosting phase
Sequence, the ON-OFF control circuit 11 control the second switch S2, third switch S3 disconnection, while controlling the 5th switch
S0, the 4th switch S4 closure, so that described in the charge-discharge circuit 13 is serially connected in by the 5th switch S0, the 4th switch S4
It is logical to carry out Bootstrap acquisition the second reference voltage V2 between second port Port-B and the third port Port-C
Cross the third port Port-C output.Wherein, the time of the first boosting phase sequence and the second boosting phase sequence is at the first preset ratio.
By changing the time scale of the first boosting phase sequence and the second boosting phase sequence, the switch control letter of adjustable control switch array
Number duty ratio, to obtain the output voltage after different size of boosting.
Preferably, the voltage raising and reducing charge pump further includes the second diode D2；The anode electricity of the second diode D2
It is connected to the 5th switch S0, the cathode of the second diode D2 is electrically connected to the third port Port-C, and described
Two diode D2 are for stopping the electric current of the third port Port-C to flow backward.
Preferably, the voltage raising and reducing charge pump further includes third diode D3, the anode electricity of the third diode D3
It is connected to the first switch S1, the cathode of the third diode D3 is electrically connected to the first node P1, and the described 3rd 2
Pole pipe D3 is for stopping the electric current of first node P1 (capacitor C1) to flow backward.
The node waveform shown in Fig. 3 B: in the first boosting phase sequence Phase11, switch S2 and S3 of clock signal clk
Closure, switch S0 and S4 are disconnected；Capacitor C1 top crown meets Port-B, bottom crown meets GND, and voltage difference thereon is V1；?
Two boosting phase sequence Phase12, switch S2 and S3 disconnections, switch S0 and S4 closure；Capacitor C1 top crown is connect by diode D1
Port-C, bottom crown meet Port-B, ignore the forward conduction voltage drop of diode D1, and the voltage difference on capacitor C1 is V2-V1.When
When the time of first boosting phase sequence Phase11 and the second boosting phase sequence Phase12 are equal, due to the voltage protection on capacitor C1
Constant, so there is V1=V2-V1, i.e. V2=2V1, i.e. output voltage V2 are one times of input voltage V1；First boosting phase sequence
The time scale of the boosting of Phase11 and second phase sequence Phase12 is different, and the target of the output voltage V2 after boosting and input is boosted
Multiple formed by voltage V1 is than different.Wherein, V2 voltage specific capacitance when diode D1 is for preventing the second boosting phase sequence Phase12
Electric current when device C1 top crown voltage is high flows backward.Wherein, the voltage not instead of input supply voltage VIN of Port-B input, mesh
The the first reference voltage V1 (such as 5V in intelligent power) for marking boosting, needs the voltage with the input of Port-A when decompression mode
(i.e. input supply voltage VIN) is distinguished.The voltage of Port-A input is the input supply voltage VIN of intelligent power, needs to be greater than
First reference voltage V1 of Port-B input, less than the pressure resistance of intelligent power.
With continued reference to Fig. 2, in decompression mode, the ON-OFF control circuit 11 controls the 5th switch S0 and breaks always
It opens, simultaneously according to the phase sequence time reference control first switch S1, second switch S2, third switch S3, the 4th switch S4
It turns off or is closed, so that the charge-discharge circuit 13 receives the input supply voltage by the first port Port-A
VIN is simultaneously depressured the input supply voltage VIN, and it is defeated from the second port Port-B to obtain the first reference voltage V1
Out.That is, voltage raising and reducing charge pump disconnects always in decompression mode, switch S0 when supply voltage is high, input power electricity
Pressure VIN is inputted by the port Port-A, and voltage V1 is exported by the end Port-B after decompression, voltage raising and reducing charge when simplified decompression mode
The circuit diagram of pump is as shown in Figure 4 A.
Specifically, the phase sequence time reference further includes the first decompression phase sequence and the second decompression phase sequence.In first drop
Phase sequence is pressed, the ON-OFF control circuit 11 controls the first switch S1, the 4th switch S4 closure, while controlling described second and opening
It closes S2, third switch S3 to disconnect, so that the charge-discharge circuit 13 is serially connected in institute by the first switch S1, the 4th switch S4
It states between first port Port-A and the second port Port-B, to receive the input by the first port Port-A
Supply voltage VIN discharges.It is described second decompression phase sequence, the ON-OFF control circuit 11 control the first switch S1,
4th switch S4 is disconnected, while controlling the second switch S2, third switch S3 closure, so that the charge-discharge circuit 13 passes through
The second switch S2, third switch S3 are serially connected between ground terminal GND and the second port Port-B, to carry out decompression acquisition
First reference voltage V1 is exported by the second port Port-B.Wherein, first decompression phase sequence and second decompression phase sequence when
Between at the first preset ratio.By changing the time scale of the first decompression phase sequence and the second decompression phase sequence, adjustable control is opened
The duty ratio for closing the switch control signal of array, to obtain the output voltage after different size of decompression.
The node waveform shown in Fig. 4 B: first in clock signal clk is depressured phase sequence Phase21, switch S1 and S4
Closure, switch S2 and S3 are disconnected, and capacitor C1 top crown meets Port-A by diode D3, and bottom crown meets Port-B, ignores two
The forward conduction voltage drop of pole pipe D3, the voltage difference on capacitor C1 are VIN-V1；Phase sequence Phase22, switch S1 are depressured second
It is disconnected with S4, switch S2 and S3 closure, capacitor C1 top crown meet Port-B, and bottom crown connects GND, the voltage difference on capacitor C1
For V1.When the time of the first decompression phase sequence Phase21 and the second decompression phase sequence Phase22 are equal, due on capacitor C1
Voltage protection is constant, so there is VIN-V1=V1, i.e. VIN=2V1, i.e. output voltage V1 are the half of input voltage VIN.First
The time scale for being depressured the decompression of phase sequence Phase21 and second phase sequence Phase22 is different, the output voltage V1's and input after decompression
Multiple formed by input supply voltage VIN is than different.Wherein, electricity when diode D3 is for preventing the first decompression phase sequence Phase21
Container C1 top crown voltage flows backward than electric current of VIN voltage when high.
With continued reference to Fig. 4 A, in decompression mode, the defeated of the second port PortB is received by voltage comparator CP1
It voltage VOUT (i.e. the first reference voltage V1) and is compared out with reference voltage VREF.When VOUT is higher than VREF, voltage ratio
Control circuit 11 is turned off the switch compared with device CP1 output first control signal (low level enable signal EN), is turned off S1~S4,
Referred to as third decompression phase sequence Phase23 (as shown in Figure 4 B).It is depressured phase sequence Phase23 in third, VOUT voltage can be decreased until
Lower than VREF voltage, voltage comparator CP1 output second control signal (the enable signal EN of high level) starts switch control electricity
Road 11, ON-OFF control circuit 11 are controlled according to clock signal clk according to above-mentioned the first decompression phase sequence and the second decompression phase sequence
The closure and shutdown of switch S1~S4.By closed-loop control, keep output voltage VO UT and reference voltage VREF dynamic equal.
The present invention also provides a kind of voltage management chip, the above-mentioned liter of the present invention is integrated in the voltage management chip
Press step-down charge pump.Wherein, the charge-discharge circuit of voltage raising and reducing charge pump is also integrated in voltage management chip, and passes through number
Mode realizes the function (i.e. removal capacitor) of capacitor.In other embodiments, the charge-discharge circuit of voltage raising and reducing charge pump can also
To include a capacitor, capacitor is arranged to be connect in voltage management chip exterior, and by the switch arrays of voltage raising and reducing charge pump
Enter voltage raising and reducing charge pump.Specifically, the voltage raising and reducing charge pump can be with reference to the above-mentioned Fig. 2 of the present invention, Fig. 3 A-3B, Fig. 4 A-
Described in 4B, repeated description is no longer done herein.
The present invention also provides a kind of voltage management device, the voltage management device includes the above-mentioned boosting drop of the present invention
Press charge pump.Specifically, the voltage raising and reducing charge pump can with reference to described in the above-mentioned Fig. 2 of the present invention, Fig. 3 A-3B, Fig. 4 A-4B,
Repeated description is no longer done herein.
Fig. 5, the flow chart of voltage management method of the present invention.The present invention also provides a kind of voltage management method,
Using the above-mentioned voltage raising and reducing charge pump of the present invention, described method includes following steps: S51: voltage raising and reducing charge pump, which receives, to be risen
Die pressing type control signal simultaneously switches to boost mode, or receives decompression mode control signal and switch to decompression mode；S52:
In boost mode, the voltage raising and reducing charge pump receives target boost voltage, carries out the target boost voltage from lifting
Pressure obtains the second reference voltage and exports；S53: in decompression mode, the voltage raising and reducing charge pump receives input power electricity
Pressure, is depressured the input supply voltage, obtains the first reference voltage and exports.
Please also refer to Fig. 2, Fig. 3 A-3B, it is preferred that step S52 further comprises: in boost mode, the boosting
Step-down charge pump receives clock signal clk, controls the voltage raising and reducing electricity according to the phase sequence time reference of the clock signal clk
The switch state switched in the switch arrays 12 of lotus pump, to control the charge-discharge circuit 13 of the voltage raising and reducing charge pump to target
Boost voltage V1 carries out Bootstrap, and acquisition is stated the second reference voltage V2 and exported.Specifically, in boost mode, switch control
Circuit 11 processed controls first switch S1 and disconnects always, while controlling the 5th switch S0, second switch according to the phase sequence time reference
S2, third switch S3, the 4th switch S4 are turned off or are closed, so that the charge-discharge circuit 13 passes through the second port
Port-B receive target boost voltage simultaneously to the target boost voltage carry out Bootstrap, obtain the second reference voltage V2 from
The third port Port-C output.That is, when supply voltage is low, voltage raising and reducing charge pump in Bootstrap mode,
Switch S1 is disconnected always, and target boost voltage V1 is inputted by the port Port-B, and voltage V2 is exported by the end Port-C after boosting, is simplified
Boost mode when voltage raising and reducing charge pump circuit diagram it is as shown in Figure 3A.
Preferably, the phase sequence time reference includes the first boosting phase sequence and the second boosting phase sequence.In first boosting
Phase sequence, the voltage raising and reducing charge pump control charge-discharge circuit 13 receive the target boost voltage V1 and charge；?
The second boosting phase sequence, the voltage raising and reducing charge pump obtain the second reference voltage V2 and export.Wherein, described first
The time of phase sequence of boosting and the second boosting phase sequence is at the first preset ratio.By changing the first boosting phase sequence and the second boosting
The time scale of phase sequence, the duty ratio of the switch control signal of adjustable control switch array 12, to obtain different size
Boosting after output voltage (the second reference voltage V2 exported is adjustable).Specifically, in the first boosting phase sequence, it is described
ON-OFF control circuit 11 controls the second switch S2, third switch S3 closure, while controlling the 5th switch S0, the 4th opening
It closes S4 to disconnect, so that the charge-discharge circuit 13 is serially connected in the second port by the second switch S2, third switch S3
Between Port-B and ground terminal GND, charged with receiving the target boost voltage V1.It is described in the second boosting phase sequence
ON-OFF control circuit 11 controls the second switch S2, third switch S3 disconnection, while controlling the 5th switch S0, the 4th opening
S4 closure is closed, so that the charge-discharge circuit 13 is serially connected in the second port by the 5th switch S0, the 4th switch S4
Between Port-B and the third port Port-C, the second reference voltage V2 is obtained by described the to carry out Bootstrap
Three port Port-C output.Wherein, the time of the first boosting phase sequence and the second boosting phase sequence is at the first preset ratio.Pass through change
The time scale of first boosting phase sequence and the second boosting phase sequence, the duty of the switch control signal of adjustable control switch array
Than to obtain the output voltage after different size of boosting.
Please also refer to Fig. 2, Fig. 4 A-4B, it is preferred that step S53 further comprises: in decompression mode, the boosting
Step-down charge pump receives clock signal clk, controls the voltage raising and reducing electricity according to the phase sequence time reference of the clock signal clk
The switch state switched in the switch arrays 12 of lotus pump, to control 13 pairs of charge-discharge circuit inputs of the voltage raising and reducing charge pump
Supply voltage VIN is depressured, and is obtained the first reference voltage V1 (the target boost voltage as under boost mode) and is exported.Tool
Body, in decompression mode, the ON-OFF control circuit 11 controls the 5th switch S0 and disconnects always, simultaneously according to the phase sequence
Time reference controls the first switch S1, second switch S2, third switch S3, the 4th switch S4 and turns off or be closed, and makes
The charge-discharge circuit 13 is obtained by the first port Port-A reception input supply voltage VIN and to the input
Supply voltage VIN is depressured, and is obtained the first reference voltage V1 and is exported from the second port Port-B.That is, when power supply electricity
When pressing high, voltage raising and reducing charge pump disconnects always in decompression mode, switch S0, and input supply voltage VIN is by the end Port-A
Mouthful input, voltage V1 is exported by the end Port-B after decompression, the circuit diagram of voltage raising and reducing charge pump when simplified decompression mode
As shown in Figure 4 A.
Preferably, the phase sequence time reference further includes the first decompression phase sequence and the second decompression phase sequence.In first drop
Phase sequence is pressed, the voltage raising and reducing charge pump controls the reception of the charge-discharge circuit 13 input supply voltage VIN and discharges；Institute
The second decompression phase sequence is stated, the voltage raising and reducing charge pump obtains the first reference voltage V1 and exports.Wherein, the first decompression phase
The time of sequence and the second decompression phase sequence is at the second preset ratio.Phase sequence is depressured by changing the first decompression phase sequence and second
Time scale, the duty ratio of the switch control signal of adjustable control switch array 12, to obtain different size of decompression
Output voltage afterwards (the first reference voltage V1 exported is adjustable).Specifically, in the first decompression phase sequence, the switch control
Circuit 11 processed controls the first switch S1, the 4th switch S4 closure, while it is disconnected to control the second switch S2, third switch S3
It opens, so that the charge-discharge circuit 13 is serially connected in the first port Port-A by the first switch S1, the 4th switch S4
Between the second port Port-B, carried out with receiving the input supply voltage VIN by the first port Port-A
Electric discharge.In the second decompression phase sequence, the ON-OFF control circuit 11 controls the first switch S1, the 4th switch S4 disconnection,
Simultaneously control the second switch S2, third switch S3 closure so that the charge-discharge circuit 13 pass through the second switch S2,
Third switch S3 is serially connected between ground terminal GND and the second port Port-B, obtains the first reference voltage V1 to carry out decompression
It is exported by the second port Port-B.Wherein, the time of the first decompression phase sequence and the second decompression phase sequence is at the first default ratio
Example.By changing the time scale of the first decompression phase sequence and the second decompression phase sequence, the switch control of adjustable control switch array
The duty ratio of signal processed, to obtain the output voltage after different size of decompression.
Please also refer to Fig. 4 A, it is preferred that step S53 further comprises: in decompression mode, the voltage raising and reducing charge
Pump compares its output voltage VO UT (i.e. a first reference voltage V1) and reference voltage VREF, and is exported based on the first comparison result
First control signal controls all switches in the switch arrays 12 and disconnects.Specifically, output is high when VOUT is higher than VREF
The enable signal EN of level is turned off S1~S4 of switch arrays 12, and referred to as third is depressured phase sequence Phase23 (such as Fig. 4 B institute
Show).The voltage raising and reducing charge pump is based further on the second comparison result output second control signal and controls the switch arrays
Switch in 12 realizes closed-loop control, makes the output electricity according to the first decompression phase sequence and the second decompression phase sequence work
Press VOUT and reference voltage VREF dynamic equal.Specifically, receiving institute by voltage comparator CP1 in decompression mode
It states the output voltage VO UT (i.e. the first reference voltage V1) of second port PortB and is compared with reference voltage VREF.When
When VOUT is higher than VREF, voltage comparator CP1 output first control signal (low level enable signal EN) turns off the switch control
Circuit 11, is turned off S1~S4, referred to as third decompression phase sequence Phase23 (as shown in Figure 4 B).Phase sequence is depressured in third
Phase23, VOUT voltage can be decreased until below VREF voltage, and voltage comparator CP1 output second control signal be (high level
Enable signal EN) control circuit 11 is started switch, ON-OFF control circuit 11 is according to clock signal clk according to the first above-mentioned decompression
Phase sequence and the second decompression phase sequence carry out the closure and shutdown of control switch S1~S4.By closed-loop control, make output voltage VO UT and
Reference voltage VREF dynamic is equal.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (22)
1. a kind of voltage raising and reducing charge pump, which is characterized in that the voltage raising and reducing charge pump is for receiving boost mode control letter
It number switches to boost mode or receives decompression mode control signal and switch to decompression mode；
In boost mode, the voltage raising and reducing charge pump receives target boost voltage, carries out certainly to the target boost voltage
Lifting pressure obtains the second reference voltage and exports；
In decompression mode, the voltage raising and reducing charge pump receives input supply voltage, drops to the input supply voltage
Pressure obtains the first reference voltage and exports.
2. voltage raising and reducing charge pump as described in claim 1, which is characterized in that by by the input supply voltage VIN with
One pattern switching voltage VTH is compared, and output boost mode control signal or decompression mode control based on comparative result
Signal.
3. voltage raising and reducing charge pump as described in claim 1, which is characterized in that the voltage raising and reducing charge pump includes switch control
Circuit, switch arrays and charge-discharge circuit processed；
The ON-OFF control circuit receives the boost mode for the 4th port by the voltage raising and reducing charge pump and controls
Signal, which switches to boost mode or receives the decompression mode control signal, switches to decompression mode, and for receiving for the moment
Clock signal, to control the switch state switched in the switch arrays according to the phase sequence time reference of the clock signal；
In boost mode, the ON-OFF control circuit according to the phase sequence time reference control the switches of the switch arrays into
Row closing or opening receives the target to control the charge-discharge circuit by the second port of the voltage raising and reducing charge pump
Boost voltage simultaneously carries out Bootstrap to the target boost voltage, obtains second reference voltage from the voltage raising and reducing
The third port of charge pump exports；
In decompression mode, the ON-OFF control circuit according to the phase sequence time reference control the switches of the switch arrays into
Row closing or opening receives the input to control the charge-discharge circuit by the first port of the voltage raising and reducing charge pump
Supply voltage is simultaneously depressured the input supply voltage, obtains first reference voltage and exports from the second port.
4. voltage raising and reducing charge pump as claimed in claim 3, which is characterized in that the voltage raising and reducing charge pump further includes clock
Generate unit；The clock generating unit is for exporting the clock signal, with what is switched in the offer control switch arrays
The phase sequence time reference of switch state.
5. voltage raising and reducing charge pump as claimed in claim 3, which is characterized in that the switch arrays, including five groups of switches:
One end of first switch is electrically connected to the first port, and the other end is electrically connected to the first segment of the switch arrays
Point；
One end of second switch is electrically connected to the first node, and the other end is electrically connected to the second port；
One end ground connection of third switch, the other end are electrically connected to the second node of the switch arrays；
One end of 4th switch is electrically connected to the second node, and the other end is electrically connected to the second port；
One end of 5th switch is electrically connected to the first node, and the other end is electrically connected to the third port；
The charge-discharge circuit is serially connected between the first node and the second node；
In boost mode, the ON-OFF control circuit controls the first switch and disconnects always, simultaneously according to the phase sequence time
Benchmark controls the 5th switch, second switch, third switch, the 4th switch and turns off or be closed, so that the charge and discharge
Circuit receives the target boost voltage by the second port and carries out Bootstrap to the target boost voltage, obtains
Second reference voltage is taken to export from the third port；
In decompression mode, ON-OFF control circuit control the 5th switch is disconnected, always simultaneously according to the phase sequence time
Benchmark controls the first switch, second switch, third switch, the 4th switch is turned off or is closed, so that the charge and discharge
Circuit receives the input supply voltage by the first port and is depressured to the input supply voltage, obtains institute
The first reference voltage is stated to export from the second port.
6. voltage raising and reducing charge pump as claimed in claim 5, which is characterized in that the phase sequence time reference includes the first boosting
Phase sequence and the second boosting phase sequence；
In the first boosting phase sequence, the ON-OFF control circuit controls the second switch, third closes the switch, and controls simultaneously
5th switch, the 4th switch disconnect, so that the charge-discharge circuit is serially connected in institute by the second switch, third switch
It states between second port and ground terminal, is charged with receiving the target boost voltage；
In the second boosting phase sequence, the ON-OFF control circuit controls the second switch, third switch disconnects, and controls simultaneously
5th switch, the 4th close the switch, so that the charge-discharge circuit is serially connected in institute by the 5th switch, the 4th switch
It states between second port and the third port, passes through the third end to carry out Bootstrap acquisition second reference voltage
Mouth output；
Wherein, the time of the first boosting phase sequence and the second boosting phase sequence is at the first preset ratio.
7. voltage raising and reducing charge pump as claimed in claim 5, which is characterized in that the voltage raising and reducing charge pump further includes second
Diode, the anode of second diode are electrically connected to the 5th switch, and the cathode of second diode is electrically connected to
The third port.
8. voltage raising and reducing charge pump as claimed in claim 5, which is characterized in that the voltage raising and reducing charge pump further includes third
Diode, the anode of the third diode are electrically connected to the first switch, and the cathode of the third diode is electrically connected to
The first node.
9. voltage raising and reducing charge pump as claimed in claim 5, which is characterized in that the phase sequence time reference further includes the first drop
Press phase sequence and the second decompression phase sequence；
In the first decompression phase sequence, the ON-OFF control circuit controls the first switch, the 4th closes the switch, and controls simultaneously
The second switch, third switch disconnect, so that the charge-discharge circuit is serially connected in institute by the first switch, the 4th switch
It states between first port and the second port, is discharged with receiving the input supply voltage by the first port；
In the second decompression phase sequence, the ON-OFF control circuit controls the first switch, the 4th switch disconnects, and controls simultaneously
The second switch, third close the switch, so that the charge-discharge circuit is serially connected in ground by the second switch, third switch
Between end and the second port, exported with carrying out decompression acquisition first reference voltage by the second port；
Wherein, the time of the first decompression phase sequence and the second decompression phase sequence is at the second preset ratio.
10. voltage raising and reducing charge pump as claimed in claim 3, which is characterized in that the voltage raising and reducing charge pump further includes
One voltage comparator；
The first input end of the first voltage comparator is electrically connected to the second port, and the second input terminal is for receiving one
Reference voltage, and its output end is electrically connected to the ON-OFF control circuit, the first voltage comparator is used in decompression mode
When receive first reference voltage that the second port obtains and be compared with the reference voltage, and based on the first ratio
Relatively result exports first control signal and closes the ON-OFF control circuit.
11. voltage raising and reducing charge pump as claimed in claim 10, which is characterized in that the first voltage comparator is further used
In starting the ON-OFF control circuit based on the second comparison result output second control signal, closed-loop control is realized, make described the
One reference voltage and reference voltage dynamic are equal.
12. voltage raising and reducing charge pump as claimed in claim 5, which is characterized in that the charge-discharge circuit includes a capacitor,
The top crown of the capacitor is electrically connected to the first node, and the bottom crown of the capacitor is electrically connected to second section
Point.
13. a kind of voltage management chip, which is characterized in that the voltage management chip includes claim 1-11 any one institute
The voltage raising and reducing charge pump stated.
14. voltage management chip as claimed in claim 13, which is characterized in that the charge-discharge circuit includes a capacitor,
The capacitor is arranged in the voltage management chip exterior, and accesses institute by the switch arrays of the voltage raising and reducing charge pump
State voltage raising and reducing charge pump.
15. a kind of voltage management device, which is characterized in that the voltage management device includes claim 1-11 any one institute
The voltage raising and reducing charge pump stated.
16. a kind of voltage management method, which is characterized in that described method includes following steps:
(1) voltage raising and reducing charge pump receives boost mode control signal and switches to boost mode, or receives decompression mode control
Signal processed simultaneously switches to decompression mode；
(2) in boost mode, the voltage raising and reducing charge pump receives target boost voltage, carries out to the target boost voltage
Bootstrap obtains the second reference voltage and exports；
(3) in decompression mode, the voltage raising and reducing charge pump receives input supply voltage, carries out to the input supply voltage
Decompression obtains the first reference voltage and exports.
17. voltage management method as claimed in claim 16, which is characterized in that step (2) further comprises: in boost mode
When, the voltage raising and reducing charge pump receives a clock signal, controls the liter according to the phase sequence time reference of the clock signal
The switch state switched in the switch arrays of step-down charge pump is pressed, to control the charge-discharge circuit pair of the voltage raising and reducing charge pump
The target boost voltage carries out Bootstrap, obtains second reference voltage and exports.
18. voltage management method as claimed in claim 17, which is characterized in that the phase sequence time reference includes the first boosting
Phase sequence and the second boosting phase sequence；
In the first boosting phase sequence, the voltage raising and reducing charge pump controls the charge-discharge circuit and receives the target boosting electricity
Pressure charges；
In the second boosting phase sequence, the voltage raising and reducing charge pump obtains second reference voltage and exports；
The time of the first boosting phase sequence and the second boosting phase sequence is at the first preset ratio.
19. voltage management method as claimed in claim 16, which is characterized in that step (3) further comprises: in decompression mode
When, the voltage raising and reducing charge pump receives a clock signal, controls the liter according to the phase sequence time reference of the clock signal
The switch state switched in the switch arrays of step-down charge pump is pressed, to control the charge-discharge circuit pair of the voltage raising and reducing charge pump
The input supply voltage is depressured, and is obtained first reference voltage and is exported.
20. voltage management method as claimed in claim 19, which is characterized in that the phase sequence time reference further includes the first drop
Press phase sequence and the second decompression phase sequence；
In the first decompression phase sequence, the voltage raising and reducing charge pump controls the charge-discharge circuit and receives the input power electricity
Pressure VIN discharges；
In the second decompression phase sequence, the voltage raising and reducing charge pump obtains first reference voltage and exports；
The time of the first decompression phase sequence and the second decompression phase sequence is at the second preset ratio.
21. voltage management method as claimed in claim 20, which is characterized in that step (3) further comprises: in decompression mode
When, the voltage raising and reducing charge pump compares first reference voltage and a reference voltage of its acquisition, and compares based on first
As a result output first control signal controls all switches in the switch arrays and disconnects.
22. voltage management method as claimed in claim 21, which is characterized in that step (3) further comprises: the boosting drop
Pressure charge pump is based further on the second comparison result output second control signal and controls switch in the switch arrays according to described
First decompression phase sequence and the second decompression phase sequence work, realize closed-loop control, make first reference voltage and the reference
Voltage dynamic is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811145022.1A CN109120149A (en) | 2018-09-29 | 2018-09-29 | Voltage raising and reducing charge pump, voltage management chip, device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811145022.1A CN109120149A (en) | 2018-09-29 | 2018-09-29 | Voltage raising and reducing charge pump, voltage management chip, device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109120149A true CN109120149A (en) | 2019-01-01 |
Family
ID=64857339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811145022.1A Pending CN109120149A (en) | 2018-09-29 | 2018-09-29 | Voltage raising and reducing charge pump, voltage management chip, device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109120149A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111769538A (en) * | 2020-07-15 | 2020-10-13 | 北京无线电测量研究所 | Phased array antenna subarray power supply circuit and electric appliance with same |
| CN112994451A (en) * | 2021-03-04 | 2021-06-18 | 西安微电子技术研究所 | Pre-stabilized voltage output circuit capable of realizing boosting, maintaining and reducing voltage and control method |
| CN113013956A (en) * | 2021-04-12 | 2021-06-22 | 维沃移动通信有限公司 | Charging and discharging circuit and electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1897425A (en) * | 2005-07-08 | 2007-01-17 | 美国凹凸微系有限公司 | Flexible buck converter to generate an output voltage higher or lower than an input voltage |
| CN102484423A (en) * | 2009-07-29 | 2012-05-30 | 株式会社理光 | Charge pump circuit and operation control method thereof |
| CN105896959A (en) * | 2015-02-15 | 2016-08-24 | 天工方案公司 | Interleaved Dual Output Charge Pump |
| CN208849668U (en) * | 2018-09-29 | 2019-05-10 | 上海晶丰明源半导体股份有限公司 | Voltage raising and reducing charge pump, voltage management chip and device |
-
2018
- 2018-09-29 CN CN201811145022.1A patent/CN109120149A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1897425A (en) * | 2005-07-08 | 2007-01-17 | 美国凹凸微系有限公司 | Flexible buck converter to generate an output voltage higher or lower than an input voltage |
| CN102484423A (en) * | 2009-07-29 | 2012-05-30 | 株式会社理光 | Charge pump circuit and operation control method thereof |
| CN105896959A (en) * | 2015-02-15 | 2016-08-24 | 天工方案公司 | Interleaved Dual Output Charge Pump |
| CN208849668U (en) * | 2018-09-29 | 2019-05-10 | 上海晶丰明源半导体股份有限公司 | Voltage raising and reducing charge pump, voltage management chip and device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111769538A (en) * | 2020-07-15 | 2020-10-13 | 北京无线电测量研究所 | Phased array antenna subarray power supply circuit and electric appliance with same |
| CN112994451A (en) * | 2021-03-04 | 2021-06-18 | 西安微电子技术研究所 | Pre-stabilized voltage output circuit capable of realizing boosting, maintaining and reducing voltage and control method |
| CN113013956A (en) * | 2021-04-12 | 2021-06-22 | 维沃移动通信有限公司 | Charging and discharging circuit and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1676355B1 (en) | Integrated device providing current-regulated charge pump driver with capacitor-proportional current | |
| CN205490148U (en) | Multi -mode source transformation ware | |
| CN105915046B (en) | A kind of control electrical appliances for electric charge pump | |
| CN109120149A (en) | Voltage raising and reducing charge pump, voltage management chip, device and method | |
| CN109039028A (en) | Control circuit and power supply adaptor applied to power supply adaptor | |
| CN103107697A (en) | Current regulating device and regulating method thereof | |
| US9608566B2 (en) | Charge pump circuit | |
| CN102290992A (en) | DC-DC boost converter circuit and method for driving the same | |
| CN102891598A (en) | Step-up dc-dc converter | |
| CN109245528A (en) | Intelligent power management system and voltage management method | |
| CN110071630A (en) | A kind of conversion circuit and implementation method of seamless switching decompression and straight-through operating mode | |
| CN105337502B (en) | A kind of low consumption circuit energy acquisition circuit | |
| CN208849671U (en) | Intelligent power management system | |
| CN109845081A (en) | Boostrap circuit for DC/DC converter | |
| CN208849668U (en) | Voltage raising and reducing charge pump, voltage management chip and device | |
| CN109617413A (en) | Boost chip and its mode switching circuit | |
| CN100566104C (en) | Has forward direction and back converter circuit to control | |
| CN104410259B (en) | A kind of charge pump multiphase interleaving technology based on striding capacitance multistep discharge and recharge | |
| CN109391251A (en) | The driving circuit and device of avalanche photodide | |
| CN110048607A (en) | A kind of conversion circuit and implementation method of seamless switching boosting and straight-through operating mode | |
| EP1594216B1 (en) | Use of charge pump with active discharge function | |
| George et al. | A reconfigurable buck-boost switched capacitor converter with adaptive gain and discrete frequency scaling control | |
| CN107800295A (en) | A kind of type of voltage step-up/down converter and its method of work and terminal device | |
| US8680824B2 (en) | Inverter circuit with a driver gate receiving a voltage lower than zero and related method for supplying an inverted voltage | |
| CN218071309U (en) | Charge pump circuit for lithium battery protection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |