CN109245528A - Intelligent power management system and voltage management method - Google Patents
Intelligent power management system and voltage management method Download PDFInfo
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- CN109245528A CN109245528A CN201811145203.4A CN201811145203A CN109245528A CN 109245528 A CN109245528 A CN 109245528A CN 201811145203 A CN201811145203 A CN 201811145203A CN 109245528 A CN109245528 A CN 109245528A
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- 238000007726 management method Methods 0.000 title claims abstract description 73
- 230000006837 decompression Effects 0.000 claims description 99
- 238000000819 phase cycle Methods 0.000 claims description 71
- 238000006243 chemical reaction Methods 0.000 claims description 31
- 230000005611 electricity Effects 0.000 claims description 20
- 239000003990 capacitor Substances 0.000 claims description 19
- 238000003491 array Methods 0.000 claims description 17
- 238000007723 die pressing method Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 239000013643 reference control Substances 0.000 claims description 4
- 240000002853 Nelumbo nucifera Species 0.000 claims description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims description 2
- 230000011664 signaling Effects 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 21
- 241000208340 Araliaceae Species 0.000 description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 235000008434 ginseng Nutrition 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000004065 semiconductor Substances 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
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
-
- 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 intelligent power management system and voltage management methods.By carrying out detection comparison to supply voltage, intelligent selection output, it can efficient output two-way voltage reference simultaneously: having the low-voltage power supply benchmark and gate driving reference voltage all the way of certain current capacity all the way, overcome supply voltage present in existing power supply management application it is high when low efficiency, supply voltage it is low when the technical issues of can not working, it is greatly reduced system power dissipation, system effectiveness is improved, the use and stand-by time of battery (group) are increased.
Description
Technical field
The present invention relates to Analogous Integrated Electronic Circuits technical field more particularly to a kind of intelligent power management systems and voltage management
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%.
In motor driven field, the voltage range fluctuation of battery (group) power supply is bigger, needs to optimize power supply pipe for different voltages
Reason.Existing power-supply management system exports the low voltage benchmark of 5V using LDO (low pressure difference linear voltage regulator), and there are two
A drawback: first is that in battery (group) electricity abundance, supply voltage is high, the difference comparsion between input voltage and output voltage
Greatly, LDO power consumption is big, low efficiency, and reduce battery (group) uses time and stand-by time；Second is that low in battery (group) electricity
When, supply voltage is low, and input voltage is lower than output voltage, and LDO cannot provide enough output again.
Gate driving (gate driver) chip intelligent power-supply management system (Smart Power Manager), being used for will
Input supply voltage be converted to suitable driving power metal-oxide-semiconductor or IGBT gate driving reference voltage VG (VG is generally 10~
15V), and as the output voltage of gate driving (gate driving reference voltage VG), its voltage stabilization and driving capability are needed not
Greatly.Grid drive chip intelligent power management system is also integrated with the DC voltage benchmark V5V of 5V all the way simultaneously, gives host system
Controller or MCU power supply, greatly simplify system complexity, improve easy expenditure and reliability.
But in existing grid drive chip intelligent power management system application, still remain following problem: in battery
When (group) supply voltage is high, the difference comparsion between input voltage and output voltage is big, and LDO power consumption is big, efficiency is very low, reduces
Battery (group) uses time and stand-by time；Battery (group) supply voltage be lower than gate driving reference voltage when, LDO again not
Enough gate driving reference voltage output can be provided.Therefore, existing intelligent power management system urgently improves.
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 intelligent electric power management system
System and voltage management method, can optimize power management, while can provide stable output voltage for different voltages, real
Now efficiently output.
To achieve the above object, the present invention provides a kind of intelligent power management system, the intelligent power management systems
Including DC/DC conversion module and charge pump circuit；The intelligent power management system is used for input supply voltage and a mould
Formula switching voltage is compared, and output boost mode control signal or decompression mode control signal based on comparative result；Institute
DC/DC conversion module is stated for receiving the boost mode control signal and controlling signal output first according to the boost mode
Reference voltage, or receive the decompression mode control signal and signal is controlled according to the decompression mode and export the second benchmark electricity
Pressure；The charge pump circuit boosts with defeated to first reference voltage for controlling signal according to the boost mode
Second reference voltage out, or signal is controlled according to the decompression mode, the input supply voltage is depressured to export
State the first reference voltage.
To achieve the above object, the present invention also provides a kind of voltage management methods, which is characterized in that the method includes
Following steps: (1) input supply voltage and pattern switching voltage are received；(2) input supply voltage and the mould
Formula switches voltage, and based on the first comparison result output boost mode control signal and executes step (3), or based on the second ratio
Compared with result output buck mode control signal and execute step (4)；(3) signal is controlled according to the boost mode, controls DC/DC
Conversion module exports the first reference voltage, and control charge pump circuit boosts to first reference voltage to obtain the
Two reference voltages simultaneously export；(4) signal is controlled according to the decompression mode, controls DC/DC conversion module output described the
Two reference voltages, and the control charge pump circuit are depressured the input supply voltage to obtain first benchmark
Voltage simultaneously exports.
The present invention has the advantages that intelligent power management system of the present invention, work when supply voltage is lower
Make to carry out Bootstrap in boost mode to the first reference voltage (target boost voltage) and carry out output voltage；Supply voltage compared with
Work is depressured input supply voltage and carrys out output voltage in decompression mode when high.The system passes through to supply voltage
It carries out detection comparison, intelligent selection output, energy while efficient output two-way voltage reference: having certain current capacity all the way
Low-voltage power supply benchmark and all the way gate driving reference voltage, overcome existing power supply management application present in supply voltage it is high when
The technical issues of low efficiency, supply voltage can not work when low is greatly reduced system power dissipation, improves system effectiveness, increases
The use and stand-by time of battery (group).
Detailed description of the invention
Fig. 1, the configuration diagram of intelligent power management system first embodiment of the present invention；
Fig. 2, the circuit diagram of intelligent power management system first embodiment 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 configuration diagram of intelligent power management system second embodiment of the present invention；
Fig. 6, the operating mode schematic diagram of intelligent power management system second embodiment of the present invention；
Fig. 7, the circuit diagram of intelligent power management system second embodiment of the present invention；
Fig. 8, 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.
Intelligent power management system of the present invention, by comparing input supply voltage and a pattern switching voltage
Compared with, and output boost mode control signal or decompression mode control signal based on comparative result；It is connect by DC/DC conversion module
It receives the boost mode control signal and signal is controlled according to the boost mode and export the first reference voltage, or described in reception
Decompression mode, which controls signal and controls signal according to the decompression mode, exports the second reference voltage；By charge pump circuit according to
The boost mode control signal boosts to export the second reference voltage, or according to described to first reference voltage
Decompression mode control signal is depressured the input supply voltage to export first reference voltage.Wherein, input electricity
Source voltage and pattern switching voltage are positive value.Input supply voltage is greater than the first reference voltage, is less than intelligent electric power management system
The pressure resistance of system；First reference voltage can be for example the 5V voltage in intelligent power.
The intelligent power management system can also compare input supply voltage and mould by a first voltage comparator
Formula switches voltage, and according to the comparison result of input supply voltage and pattern switching voltage output boost mode control signal or
Decompression mode controls signal.Specifically, the output of first voltage comparator rises when input supply voltage is less than pattern switching voltage
Die pressing type controls signal；When input supply voltage is more than or equal to pattern switching voltage, first voltage comparator output buck mould
Formula controls signal.
Intelligent power management system of the present invention, work is in boost mode when supply voltage is lower, to the
One reference voltage (target boost voltage) carries out Bootstrap and carrys out output voltage；It works and is being depressured when supply voltage is higher
Mode is depressured input supply voltage and carrys out output voltage.That is, the system is by carrying out detection comparison to supply voltage,
Intelligent selection output, energy while efficient output two-way voltage reference: there is the low-voltage power supply benchmark of certain current capacity all the way
(for example, 5V) and all the way gate driving reference voltage (for example, 10~15V) overcome present in existing power supply management application
The technical issues of can not working when low efficiency, supply voltage are low when supply voltage is high, is greatly reduced system power dissipation, improves system
System efficiency, increases the use and stand-by time of battery (group).
With reference to Fig. 1, the configuration diagram of intelligent power management system first embodiment of the present invention.
As shown in Figure 1, in the present embodiment, the intelligent power management system includes first voltage comparator CP1.First
The first input end of voltage comparator is for receiving input supply voltage VIN, and the second input terminal is for reception pattern switching electricity
VTH is pressed, output end is used to export boost mode control according to the comparison result of input supply voltage VIN and pattern switching voltage VTH
Signal High or decompression mode processed control signal Low.Specifically, when input supply voltage VIN is less than pattern switching voltage VTH
When, first voltage comparator exports boost mode and controls signal High；When input supply voltage VIN is more than or equal to pattern switching electricity
When pressing VTH, first voltage comparator output buck mode control signal Low.
In the present embodiment, the DC/DC conversion module includes one the oneth DC/DC converter 11.First DC/DC converter
11 first input end is for receiving boost mode control signal High or decompression mode control signal Low, the second input
End is for receiving input supply voltage VIN, and its output end is electrically connected to the first reference voltage by a first switch S11 and exports
VL is held, for exporting according to boost mode control signal High the first reference voltage V1 of output to first reference voltage
VL is held, output end further passes through a second switch S12 and is electrically connected to the second reference voltage output end VG, for according to
Decompression mode controls signal Low and exports the second reference voltage V2 to the second reference voltage output end VG.Wherein, the first benchmark
Voltage V1 can be DC voltage, such as 5V, controller or MCU power supply to system；Second reference voltage V2 can be grid
Pole driving voltage, such as 10~15V, the output voltage as grid drive chip.First DC/DC converter 11 can be a line
Property voltage-stablizer.
In the present embodiment, the charge pump circuit includes voltage raising and reducing charge pump 12, and voltage raising and reducing charge pump 12 has
Four ports (pin), respectively first port Port-A, second port Port-B, third port Port-C and the 4th port
Port-D；The switch arrays 122 that voltage raising and reducing charge pump 12 is made up of a charge-discharge circuit 123 and five groups of switches
The function of realizing boosting and decompression, simplifies the structure of charge pump, is greatly saved cost, reduces system power dissipation.Wherein,
4th port PortD of voltage raising and reducing charge pump 12 for receive boost mode control signal High switch to boost mode or
It receives decompression mode control signal Low and switches to decompression mode；In boost mode, voltage raising and reducing charge pump 12 by its second
Port PortB receives the first reference voltage V1 (target boost voltage) of the first DC/DC converter 11 output, to the first benchmark electricity
It presses V1 to carry out Bootstrap and obtains the second reference voltage V2, exported by its third port PortC；In decompression mode, boosting
Step-down charge pump 12 receives input supply voltage VIN by its first port PortA, is depressured to input supply voltage VIN
The first reference voltage V1 is obtained, is exported by its second port PortB.
Specifically, the voltage raising and reducing charge pump 12 includes ON-OFF control circuit 121, switch arrays 122 and charge and discharge
Circuit 123.
The ON-OFF control circuit (Switch Control circuit) 121, for passing through the voltage raising and reducing charge
4th port Port-D of pump 12 receives boost mode control signal High and switches to boost mode or receive decompression mode control
Signal Low processed switches to decompression mode, and for receiving a clock signal clk, according to the phase sequence of the clock signal clk
Time reference controls the switch state switched in the switch arrays 122.
In boost mode, the ON-OFF control circuit 121 controls the switch arrays according to the phase sequence time reference
122 switch carries out closing or opening, to control the charge-discharge circuit 123 by the second of the voltage raising and reducing charge pump 12
Port Port-B receives the first reference voltage V1 and carries out Bootstrap to the first reference voltage V1, obtains the second reference voltage
V2 is exported from the third port Port-C of the voltage raising and reducing charge pump 12.Wherein, in boost mode, charge-discharge circuit 123 is connect
The the first reference voltage V1 received is target boost voltage.
In decompression mode, the ON-OFF control circuit 121 controls the switch arrays according to the phase sequence time reference
122 switch carries out closing or opening, to control the charge-discharge circuit 123 by the first of the voltage raising and reducing charge pump 12
Port Port-A receives input supply voltage VIN and is depressured to input supply voltage VIN, obtains the first reference voltage V1
It is exported from the second port Port-B of the voltage raising and reducing charge pump 12.
The charge-discharge circuit 123 can realize the function (i.e. removal capacitor) of capacitor, such charge and discharge digitally
Circuit 123 can integrate in the chips.The charge-discharge circuit 123 also may include a capacitor, and capacitor passes through switch
Array 122 accesses voltage raising and reducing charge pump 12.
Optionally, the voltage raising and reducing charge pump further includes clock generating unit 124；Clock generating unit 124 is for defeated
Clock signal clk out, to provide the phase sequence time reference for controlling the switch state switched in the switch arrays 122.Clock produces
Raw unit 124 can be an oscillator (Oscillator).In other embodiments, clock signal clk can also be by external electrical
Road generates.
Preferably, the voltage raising and reducing charge pump 12 further includes second voltage comparator CP2；Second voltage comparator CP2
First input end be electrically connected to the second port Port-B of voltage raising and reducing charge pump 12, the second input terminal is for receiving a ginseng
Voltage VREF is examined, and its output end is electrically connected to ON-OFF control circuit 121.Second voltage comparator CP2 is used in decompression mode
When receive second port Port-B obtain the first reference voltage V1 and be compared with reference voltage VREF, and based on first ratio
Relatively result output first control signal turns off the switch control circuit 121；And based on the second comparison result output the second control letter
Control circuit 121 number is started switch, realizes closed-loop control, keeps the first reference voltage V1 and reference voltage VREF dynamic equal.Tool
Body, when the first reference voltage V1 is more than or equal to reference voltage VREF, second voltage comparator CP2 obtains first and compares knot
Fruit；When the first reference voltage V1 is less than reference voltage VREF, second voltage comparator CP2 obtains the second comparison result；Pass through
Second voltage comparator CP2 is introduced, 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 intelligent power management system first of the present invention
The circuit diagram of embodiment, the circuit diagram of voltage raising and reducing charge pump when Fig. 3 A is simplified boost mode, Fig. 3 B is Fig. 3 A institute
Show 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,
Fig. 4 B is part of nodes waveform diagram in circuit shown in Fig. 4 A.
Specifically, the ON-OFF control circuit (Switch Control) 121, for passing through the voltage raising and reducing charge pump
The 4th port Port-D receive boost mode control signal Low switch to boost mode or receive decompression mode control signal
High switches to decompression mode, and for receiving a clock signal clk, according to the phase sequence time of the clock signal clk
Benchmark controls the switch state switched in the switch arrays 122.
Specifically, switch arrays 122, 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 122；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 122；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 123 is serially connected between first node P1 and second node P2.Specifically, charge-discharge circuit 123 is adopted
Electricity container C1 carries out the charge and discharge of input voltage, and the top crown of capacitor C1 is electrically connected to first node P1, bottom crown electricity
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 121 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 123 receives target boost voltage by the second port Port-B and carries out certainly to the target boost voltage
Lifting pressure obtains the second reference voltage V2 and exports from the third port Port-C.That is, when supply voltage is low, boosting drop
Press charge pump in Bootstrap mode, switch S1 is disconnected always, and the first reference voltage V1 is inputted by the port Port-B, boosting
The second reference voltage V2 is exported by the end Port-C afterwards, and the circuit diagram of voltage raising and reducing charge pump is as schemed when simplified boost mode
Shown in 3A.
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 121 controls the second switch S2, third switch S3 closure, while controlling the described 5th and opening
It closes S0, the 4th switch S4 to disconnect, so that the charge-discharge circuit 123 is serially connected in by the second switch S2, third switch S3
Between the second port Port-B and ground terminal GND, charged with receiving the first reference voltage V1.At described second liter
Phase sequence is pressed, the ON-OFF control circuit 121 controls the second switch S2, third switch S3 disconnection, while controlling the described 5th
Switch S0, the 4th switch S4 closure, so that the charge-discharge circuit 123 is concatenated by the 5th switch S0, the 4th switch S4
Between the second port Port-B and the third port Port-C, the second benchmark electricity is obtained to carry out Bootstrap
Pressure V2 is exported by the third port Port-C.Wherein, the time of the first boosting phase sequence and the second boosting phase sequence is pre- at first
If ratio.By changing the time scale of the first boosting phase sequence and the second boosting phase sequence, adjustable control switch array is opened
The duty ratio for closing control signal, 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 D2
Port-C, bottom crown meet Port-B, ignore the forward conduction voltage drop of diode D2, 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, the second reference voltage V2 of the output after boosting and input
The first reference voltage V1 formed by multiple than different.Wherein, V2 when diode D2 is for preventing the second boosting phase sequence Phase12
Electric current when voltage specific capacitance device C1 top crown voltage is high flows backward.Wherein, the voltage of Port-B input is not input supply voltage
VIN, but the first reference voltage V1 (such as 5V in intelligent power) of target boosting, need and Port-A when decompression mode
The voltage (i.e. input supply voltage VIN) of input is distinguished.The voltage of Port-A input is the input supply voltage of intelligent power
VIN needs to be greater than the 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 121 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 123 receives the input power electricity by the first port Port-A
Pressure VIN is simultaneously depressured the input supply voltage VIN, obtains the first reference voltage V1 from the second port Port-B
Output.That is, voltage raising and reducing charge pump disconnects always in decompression mode, switch S0, input power when supply voltage is high
Voltage VIN is inputted by the port Port-A, and voltage V1 is exported by the end Port-B after decompression, voltage raising and reducing electricity when simplified decompression mode
The circuit diagram of lotus 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 121 controls the first switch S1, the 4th switch S4 closure, while controlling described second
Switch S2, third switch S3 are disconnected, so that the charge-discharge circuit 123 is concatenated by the first switch S1, the 4th switch S4
Between the first port Port-A and the second port Port-B, described in being received by the first port Port-A
Input supply voltage VIN discharges.In the second decompression phase sequence, the ON-OFF control circuit 121 controls described first and opens
It closes S1, the 4th switch S4 to disconnect, while controlling the second switch S2, third switch S3 closure, so that the charge-discharge circuit
123 are serially connected between ground terminal GND and the second port Port-B by the second switch S2, third switch S3, to carry out
Decompression obtains the first reference voltage V1 and is exported by the second port Port-B.Wherein, the first decompression phase sequence and the second decompression
The time of phase sequence is at the first preset ratio.By changing the time scale of the first decompression phase sequence and the second decompression phase sequence, can adjust
The duty ratio for saving the switch control signal of control switch 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 second port PortB is received by second voltage comparator CP2
Output voltage VO UT (i.e. the first reference voltage V1) and be compared with reference voltage VREF.When VOUT is higher than VREF, the
Two voltage comparator CP2 output first control signal (low level enable signal EN) turn off the switch control circuit 121, make S1~
S4 is turned off, referred to as third decompression phase sequence Phase23 (as shown in Figure 4 B).Phase sequence Phase23, VOUT voltage meeting are depressured in third
It is decreased until below VREF voltage, second voltage comparator CP2 output second control signal (the enable signal EN of high level) is opened
Dynamic ON-OFF control circuit 121, ON-OFF control circuit 121 is according to clock signal clk according to the first above-mentioned decompression phase sequence and second
Decompression phase sequence carrys 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.
Voltage raising and reducing charge pump described in the present embodiment, it is only necessary to which a charge-discharge circuit and five groups of switches can be realized
The function of boosting and decompression, simplifies the structure of charge pump.In other embodiments, the charge pump circuit can be using boosting
Charge pump adds the combined circuit formed of step-down charge pump: receiving boost mode by boosting charge pump and controls signal and DC/
First reference voltage of DC conversion module output, boosts to the first reference voltage, obtains the second reference voltage and exports；It is logical
It crosses step-down charge pump and receives decompression mode control signal and input supply voltage, input supply voltage is depressured, is obtained
First reference voltage simultaneously exports；Boosting charge pump and step-down charge pump all can be include a capacitor and four switches
Combining form specifically refers to existing charge pump set-up mode, and details are not described herein again.
With reference to Fig. 5-Fig. 6, wherein Fig. 5 is that the framework of intelligent power management system second embodiment of the present invention shows
It is intended to, Fig. 6 is the operating mode schematic diagram of intelligent power management system second embodiment of the present invention.With reality shown in Fig. 1
Apply example the difference is that, in the present embodiment, the DC/DC conversion module include one the oneth DC/DC converter 51 and one
2nd DC/DC converter 52.The charge pump circuit uses voltage raising and reducing charge pump 12, and voltage raising and reducing charge pump 12 can refer to
Described in the above-mentioned Fig. 1 of the present invention, repeated description is no longer done herein.In other embodiments, the charge pump circuit can also be adopted
The circuit of the formation combined by boosting charge pump plus step-down charge pump no longer does repeated description herein.Wherein, the first DC/DC
Converter 51 and the 2nd DC/DC converter 52 can use linear voltage regulator.
Wherein, the first input end of the first DC/DC converter 51 is for receiving the boost mode control signal
High, the second input terminal is for receiving the input supply voltage VIN, and to be electrically connected to the first reference voltage defeated for its output end
Outlet VL exports the first reference voltage V1 to first reference voltage output end for controlling signal according to the boost mode
VL.For the first input end of the 2nd DC/DC converter 52 for receiving the decompression mode control signal Low, second is defeated
Enter end for receiving the input supply voltage VIN, and its output end is electrically connected to the second reference voltage output end VG, is used for root
The second reference voltage V2 to the second reference voltage output end VG is exported according to decompression mode control signal.In the present embodiment
In, in boost mode, voltage raising and reducing charge pump 12 receives the output of the first DC/DC converter 51 by its second port PortB
The first reference voltage V1 (target boost voltage).
Preferably, boost mode control signal High and decompression mode control signal Low is reciprocal signal, that is, works as liter
When die pressing type control signal High is high level enable signal, decompression mode signal is the low level signal of reverse phase.Make in this way,
When first DC/DC converter 51 works, the 2nd DC/DC converter 52 does not work；When 2nd DC/DC converter 52 works, first
DC/DC converter 51 does not work, and can reduce chip power-consumption.
Preferably, the intelligent power management system further includes first diode D1, the anode of the first diode D1
It is electrically connected the output end of the 2nd DC/DC converter 52, the cathode of the first diode D1 is electrically connected to second base
Quasi- voltage output end VG；The first diode D1 is used for the electric current when end VG voltage being prevented to be higher than VIN voltage and flows backward.
As shown in fig. 6, the operating mode of intelligent power management system are as follows: first voltage comparator CP1 compares input power
Voltage VIN and pattern switching voltage VTH；When input supply voltage VIN is low, system exports boost mode and controls signal
High exports the first reference voltage V1 (such as low-voltage power supply reference voltage of 5V) by the first DC/DC converter 51, simultaneously
Voltage raising and reducing charge pump 12 by the first reference voltage V1 carry out boosting output the second reference voltage V2 (such as 10-15V grid drive
Dynamic reference voltage)；When input supply voltage VIN is higher, system output buck mode control signal Low passes through second
DC/DC converter 52 exports the second reference voltage V2, while input supply voltage VIN drops in voltage raising and reducing charge pump 12
The first reference voltage V1 of pressure output.By combining two DC/DC converters and voltage raising and reducing charge pump, single line is overcome
The system of property voltage-stablizer low efficiency when supply voltage is high, the shortcomings that can not boosting when supply voltage is low, is greatly reduced
System power dissipation improves system effectiveness, increases the use and stand-by time of battery (group).
With reference to Fig. 7, the circuit diagram of intelligent power management system second embodiment of the present invention.Implement with shown in Fig. 2
Example the difference is that, in the present embodiment, the DC/DC conversion module includes one the oneth DC/DC converter 51 and one the
Two DC/DC converters 52；When input supply voltage VIN is lower than pattern switching voltage VTH, system exports boost mode control letter
Number High (such as high level enable signal) opens the first DC/DC converter 51 (simultaneously closing off the 2nd DC/DC converter 52), leads to
Cross the first directly output the first reference voltage V1 (such as low-voltage power supply reference voltage of 5V) of DC/DC converter 51；When input electricity
When source voltage VIN is higher than pattern switching voltage VTH, system output buck mode control signal Low (such as the enabled letter of low level
Number) the 2nd DC/DC converter 52 (simultaneously closing off the first DC/DC converter 51) is opened, directly by the 2nd DC/DC converter 52
Export the second reference voltage V2 (such as gate driving reference voltage of 10-15V).Due to DC/DC converter input voltage and
Output voltage differs very little, therefore efficiency is very high.The charge pump circuit uses voltage raising and reducing charge pump 12, voltage raising and reducing charge pump
12 can no longer do repeated description with reference to described in the above-mentioned Fig. 2 of the present invention, Fig. 3 A-3B, Fig. 4 A-4B herein.In other embodiments
In, the charge pump circuit can also add the combined circuit formed of step-down charge pump using boosting charge pump, no longer do herein
Repeatability description.
With reference to Fig. 8, the flow chart of voltage management method of the present invention.The present invention also provides a kind of voltage management sides
Method, using the above-mentioned intelligent power management system of the present invention, described method includes following steps: S81: receiving input supply voltage
And pattern switching voltage；S82: compare input supply voltage and pattern switching voltage, and risen based on the output of the first comparison result
Die pressing type control signal simultaneously executes step S83, or based on the second comparison result output buck mode control signal and executes step
Rapid S84；S83: signal is controlled according to the boost mode, control DC/DC conversion module exports the first reference voltage, and control
Charge pump circuit boosts to the first reference voltage to obtain the second reference voltage and export；S84: according to the decompression mode
Control signal, control DC/DC conversion module export the second reference voltage, and control charge pump circuit to input supply voltage into
Row decompression is to obtain the first reference voltage and export.Specifically, when input supply voltage VIN is less than pattern switching voltage VTH,
System exports boost mode and controls signal High；When input supply voltage VIN is more than or equal to pattern switching voltage VTH, system
Output buck mode control signal Low.
Please also refer to Fig. 1, it is preferred that the DC/DC conversion module may include one the oneth DC/DC converter 11.Then,
Control DC/DC conversion module described in step S83 exports the first reference voltage: the first DC/DC converter
11, which receive boost mode, controls signal High and input supply voltage VIN, and controls signal High output according to boost mode
First reference voltage V1；It is further that the DC/DC conversion module of control described in step S84 exports the second reference voltage V2
It include: the first DC/DC converter 11 reception decompression mode control signal Low and input supply voltage VIN, and according to drop
Die pressing type controls signal Low and exports the second reference voltage V2.Wherein, the first reference voltage V1 can be low-voltage power supply DC reference
Voltage, such as 5V, controller or MCU power supply to system；Second reference voltage V2 can be gate driving reference voltage, one
As be 10~15V, the output voltage as grid drive chip.First DC/DC converter 11 can be a linear voltage regulator.
Please also refer to Fig. 5-6, it is preferred that the DC/DC conversion module includes one the oneth DC/DC converter 51 and one the
Two DC/DC converters 52.Then, the first reference voltage of the output of control DC/DC conversion module described in step S83 further comprises:
The first DC/DC converter 51 receives boost mode and controls signal High and input supply voltage VIN, and according to boosting mould
Formula controls signal High and exports the first reference voltage V1；The DC/DC conversion module of control described in step S84 exports institute
Stating the second reference voltage V2 further comprises: the 2nd DC/DC converter 52 receives decompression mode control signal Low and defeated
Enter supply voltage VIN, and signal Low is controlled according to decompression mode and exports the second reference voltage V2.
Preferably, boost mode control signal High and decompression mode control signal Low is reciprocal signal, that is, works as liter
When die pressing type control signal High is high level enable signal, decompression mode signal is the low level signal of reverse phase.Make in this way,
When first DC/DC converter 51 works, the 2nd DC/DC converter 52 does not work；When 2nd DC/DC converter 52 works, first
DC/DC converter 51 does not work, and can reduce chip power-consumption.
Please also refer to Fig. 2, Fig. 3 A-3B, it is preferred that step S83 further comprises: a clock signal clk is received, with root
The charge pump circuit 12 is controlled according to the phase sequence time reference of the clock signal clk to rise the first reference voltage V1
Pressure is to obtain the second reference voltage V2 and export.Specifically, the control of ON-OFF control circuit 11 first is opened in boost mode
It closes S1 to disconnect always, while controlling the 5th switch S0, second switch S2, third switch S3, the 4th according to the phase sequence time reference
Switch S4 is turned off or is closed, so that the charge-discharge circuit 13 receives the first benchmark electricity by the second port Port-B
It presses V1 (target boost voltage) simultaneously to carry out Bootstrap to the first reference voltage V1, obtains the second reference voltage V2 from described the
Three port Port-C output.That is, voltage raising and reducing charge pump is in Bootstrap mode, switch S1 when supply voltage is low
Always it disconnects, target boost voltage V1 is inputted by the port Port-B, and voltage V2 is exported by the end Port-C after boosting, simplified boosting
The circuit diagram of voltage raising and reducing charge pump is as shown in Figure 3A when mode.
Please also refer to Fig. 2, Fig. 4 A-4B, it is preferred that step S83 further comprises: a clock signal clk is received, with root
The charge pump circuit 12 is controlled according to the phase sequence time reference of the clock signal clk to carry out the input supply voltage VIN
Decompression is to obtain the first reference voltage V1 and export.Specifically, the ON-OFF control circuit 11 controls in decompression mode
The 5th switch S0 disconnects always, according to the phase sequence time reference controls the first switch S1, second switch S2, the simultaneously
Three switch S3, the 4th switch S4 are turned off or are closed, so that the charge-discharge circuit 13 passes through the first port Port-A
Receive the input supply voltage VIN and the input supply voltage VIN be depressured, obtain the first reference voltage V1 from
The second port Port-B output.That is, voltage raising and reducing charge pump is in decompression mode, switch when supply voltage is high
S0 is disconnected always, and input supply voltage VIN is inputted by the port Port-A, and voltage V1 is exported by the end Port-B after decompression, is simplified
The circuit diagram of voltage raising and reducing charge pump is as shown in Figure 4 A when decompression mode.
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 (24)
1. a kind of intelligent power management system, which is characterized in that the intelligent power management system include DC/DC conversion module with
And charge pump circuit；
The intelligent power management system is based on comparing for input supply voltage to be compared with a pattern switching voltage
As a result output boost mode control signal or decompression mode control signal；
The DC/DC conversion module is defeated for receiving the boost mode control signal and controlling signal according to the boost mode
First reference voltage out, or receive the decompression mode control signal and signal output second is controlled according to the decompression mode
Reference voltage；
The charge pump circuit boosts with defeated to first reference voltage for controlling signal according to the boost mode
Second reference voltage out, or signal is controlled according to the decompression mode, the input supply voltage is depressured to export
State the first reference voltage.
2. intelligent power management system as described in claim 1, which is characterized in that the intelligent power management system is further
Including first voltage comparator；
The first input end of the first voltage comparator is for receiving the input supply voltage, and the second input terminal is for connecing
The pattern switching voltage is received, output end is used for the comparison result according to the input supply voltage and the pattern switching voltage
It exports boost mode control signal or decompression mode controls signal.
3. intelligent power management system as described in claim 1, which is characterized in that the DC/DC conversion module includes one the
One DC/DC converter；
The first input end of the first DC/DC converter is for receiving the boost mode control signal or the decompression mould
Formula controls signal, and the second input terminal is for receiving the input supply voltage, and its output end is electrically connected by a first switch
It is connected to the first reference voltage output end, exports the first reference voltage to described first for controlling signal according to the boost mode
Reference voltage output end, output end further pass through a second switch and are electrically connected to the second reference voltage output end, are used for root
The second reference voltage is exported to second reference voltage output end according to decompression mode control signal.
4. intelligent power management system as described in claim 1, which is characterized in that the DC/DC conversion module includes one the
One DC/DC converter and one the 2nd DC/DC converter；
The first input end of the first DC/DC converter is for receiving the boost mode control signal, the second input terminal
For receiving the input supply voltage, and its output end is electrically connected to the first reference voltage output end, for according to the liter
Die pressing type controls signal and exports the first reference voltage to first reference voltage output end；
The first input end of the 2nd DC/DC converter is for receiving the decompression mode control signal, the second input terminal
For receiving the input supply voltage, and its output end is electrically connected to the second reference voltage output end, for according to the drop
Die pressing type controls signal and exports the second reference voltage to second reference voltage output end.
5. intelligent power management system as described in claim 3 or 4, which is characterized in that boost mode control signal and
The decompression mode control signal is reciprocal signal.
6. intelligent power management system as claimed in claim 4, which is characterized in that the intelligent power management system further includes
First diode, the anode of the first diode are electrically connected the output end of the 2nd DC/DC converter, the diode
Cathode is electrically connected to second reference voltage output end.
7. intelligent power management system as described in claim 1, which is characterized in that the charge pump circuit further comprises rising
Press charge pump and step-down charge pump；
The boosting charge pump is used to receive the described of boost mode control signal and DC/DC conversion module output
First reference voltage boosts to first reference voltage, obtains second reference voltage and exports；
The step-down charge pump is for receiving the decompression mode control signal and the input supply voltage, to the input
Supply voltage is depressured, and is obtained first reference voltage and is exported.
8. intelligent power management system as described in claim 1, which is characterized in that the charge pump circuit includes voltage raising and reducing
Charge pump；4th port of the voltage raising and reducing charge pump switches to boost mode for receiving the boost mode control signal
Or it receives the decompression mode control signal and switches to decompression mode；
In boost mode, the voltage raising and reducing charge pump receives what the DC/DC conversion module exported by its second port
First reference voltage carries out Bootstrap to first reference voltage and obtains second reference voltage, by its
The output of three ports；
In decompression mode, the voltage raising and reducing charge pump receives the input supply voltage by its first port, to described
Input supply voltage carries out decompression and obtains first reference voltage, is exported by its second port.
9. intelligent power management system as claimed in claim 8, which is characterized in that the voltage raising and reducing charge pump includes switch
Control circuit, switch arrays and charge-discharge circuit；
The ON-OFF control circuit switches to boosting mould for receiving the boost mode control signal by the 4th port
Formula or the reception decompression mode control signal switch to decompression mode, and for receiving a clock signal, according to institute
The phase sequence time reference for stating clock signal controls the switch state switched in the switch arrays；
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 first reference voltage and to institute to control the charge-discharge circuit by the second port
It states the first reference voltage and carries out Bootstrap, obtain second reference voltage and exported from the third port；
In decompression mode, the ON-OFF control circuit controls the switch root of the switch arrays according to the phase sequence time reference
Closing or opening is carried out according to the phase sequence time reference, is passed through described in first port reception with controlling the charge-discharge circuit
Input supply voltage is simultaneously depressured the input supply voltage, obtains first reference voltage from the second port
Output.
10. intelligent power management system as claimed in claim 9, which is characterized in that the voltage raising and reducing charge pump further includes
Clock generating unit；The clock generating unit is opened for exporting the clock signal with providing to control in the switch arrays
The phase sequence time reference of the switch state of pass.
11. intelligent power management system as claimed in claim 9, which is characterized in that the switch arrays, including five groups opened
It closes:
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 first reference voltage by the second port and carries out Bootstrap to first reference 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.
12. intelligent power management system as claimed in claim 11, which is characterized in that the phase sequence time reference includes first
Phase sequence of boosting 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 first reference 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.
13. intelligent power management system as claimed in claim 11, 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
It is connected to the third port.
14. intelligent power management system as claimed in claim 11, 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
It is connected to the first node.
15. intelligent power management system as claimed in claim 11, which is characterized in that the phase sequence time reference further includes
One decompression 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.
16. intelligent power management system as claimed in claim 9, which is characterized in that the voltage raising and reducing charge pump further includes
Second voltage comparator；
The first input end of the second 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 second 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.
17. intelligent power management system as claimed in claim 16, which is characterized in that the second voltage comparator is further
For starting the ON-OFF control circuit based on the second comparison result output second control signal, realizes closed-loop control, make described
First reference voltage and reference voltage dynamic are equal.
18. intelligent power management system as claimed in claim 11, which is characterized in that the charge-discharge circuit includes a capacitor
Device, the top crown of the capacitor are electrically connected to the first node, and the bottom crown of the capacitor is electrically connected to described second
Node.
19. a kind of voltage management method, which is characterized in that described method includes following steps:
(1) input supply voltage and pattern switching voltage are received；
(2) input supply voltage and the pattern switching voltage, and boost mode is exported based on the first comparison result
Control signal simultaneously executes step (3), or based on the second comparison result output buck mode control signal and executes step (4)；
(3) signal is controlled according to the boost mode, control DC/DC conversion module exports the first reference voltage, and control electricity
Lotus pump circuit boosts to first reference voltage to obtain the second reference voltage and export；
(4) signal is controlled according to the decompression mode, controls the DC/DC conversion module and exports second reference voltage, with
And the control charge pump circuit is depressured the input supply voltage to obtain first reference voltage and export.
20. voltage management method as claimed in claim 19, which is characterized in that step (3) further comprises: receiving a clock
Signal carries out first reference voltage with controlling the charge pump circuit according to the phase sequence time reference of the clock signal
Boosting is to obtain second reference voltage and export.
21. voltage management method as claimed in claim 19, which is characterized in that step (4) further comprises: receiving a clock
Signal carries out the input supply voltage with controlling the charge pump circuit according to the phase sequence time reference of the clock signal
Decompression is to obtain first reference voltage and export.
22. voltage management method as claimed in claim 19, which is characterized in that the DC/DC conversion module includes one first
DC/DC converter；
Control DC/DC conversion module described in step (3) exports the first reference voltage: the first DC/DC turns
Parallel operation receives the boost mode control signal and the input supply voltage, and defeated according to boost mode control signal
First reference voltage out；
The DC/DC conversion module of control described in step (4) exports second reference voltage: described first
DC/DC converter receives the decompression mode control signal and the input supply voltage, and according to the decompression mode control
Signal processed exports second reference voltage.
23. voltage management method as claimed in claim 19, which is characterized in that the DC/DC conversion module includes one first
DC/DC converter and one the 2nd DC/DC converter；
Control DC/DC conversion module described in step (3) exports the first reference voltage: the first DC/DC turns
Parallel operation receives boost mode control signal and the input supply voltage, and controls signal according to the boost mode and export institute
State the first reference voltage；
The DC/DC conversion module of control described in step (4) exports second reference voltage: described second
DC/DC converter receives decompression mode control signal and the input supply voltage, and is controlled and believed according to the decompression mode
Number output second reference voltage.
24. voltage management method as claimed in claim 23, which is characterized in that the boost mode control signal and the drop
It is reciprocal signal that die pressing type, which controls signal,.
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| CN201811145203.4A CN109245528A (en) | 2018-09-29 | 2018-09-29 | Intelligent power management system and voltage management method |
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| CN110658468A (en) * | 2019-09-17 | 2020-01-07 | 安徽容知日新科技股份有限公司 | Battery state detection device |
| CN113824315A (en) * | 2021-10-20 | 2021-12-21 | 京东方科技集团股份有限公司 | Power supply generation circuit and display device |
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