CN209014942U - A kind of lower electric sequential control circuit and power circuit - Google Patents
A kind of lower electric sequential control circuit and power circuit Download PDFInfo
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- CN209014942U CN209014942U CN201821877783.1U CN201821877783U CN209014942U CN 209014942 U CN209014942 U CN 209014942U CN 201821877783 U CN201821877783 U CN 201821877783U CN 209014942 U CN209014942 U CN 209014942U
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Abstract
The utility model embodiment discloses a kind of lower electric sequential control circuit and power circuit.Wherein, which includes: the first energy-storage module；Second energy-storage module；Charge-discharge circuit, it is electrically connected with the feeder ear of lower electric sequential control circuit, it is electrically connected with the first end of the first energy-storage module, it is electrically connected with the first end of the second energy-storage module, for when feeder ear powers off, the voltage decreasing rate when first end of the first energy-storage module of control is discharged to be greater than the voltage decreasing rate when first end electric discharge of the second energy-storage module；Detection circuit, first end are electrically connected with the first end of the first energy-storage module, and second end is electrically connected with the first end of the second energy-storage module；At least two delay circuits, the control terminal of any delay circuit are electrically connected with the output end of detection circuit, and the output end of any delay circuit is electrically connected with the corresponding output end of lower electric sequential control circuit.The technical solution of the utility model embodiment electric timing requirements under can meeting in system cut-off.
Description
Technical field
The utility model relates to technical field of power management more particularly to a kind of lower electric sequential control circuits and power supply electricity
Road.
Background technique
With the development that electronic technology is maked rapid progress, the function applied to the circuit control system in electronic equipment is increasingly rich
Rich and complicated, the circuit of use and load become more diverse, and the supply voltage of various circuits or load requirement is different, because
This is often in a circuit control system there are a variety of power supply modules, this requires that each power supply module need it is stringent under
Electric timing not only will affect the reliability of circuit control system, or even will cause circuit control system device if lower electricity timing is improper
The permanent damage of part.For example, signal processor can be calculated and be handled to various control signals, usual signal processor
The multiple and different power conversion chip power supply of the need of work of kernel and peripheral hardware, and the output voltage grade of each power conversion chip
It is not quite similar.The power conversion chip can be Switching Power Supply conversion chip or linear power supply conversion chip.
Currently, the lower electric timing of each power supply module is by electricity in circuit control system normal shutdown in circuit control system
What the logic circuit in path control system was realized.It is external when circuit control system however in existing circuit control system
When the unexpected abnormal power-down of power supply, circuit control system is substantially at uncontrollable state, each power supply module in circuit control system
Almost power-off simultaneously or cannot it is anticipated that timing under electricity, the irreversible failure such as cause signal processor locked.
Utility model content
The utility model embodiment provides a kind of lower electric sequential control circuit and power circuit, can expire in system cut-off
The electric timing requirements of foot.
In a first aspect, the utility model embodiment provides a kind of lower electric sequential control circuit, comprising:
First energy-storage module；
Second energy-storage module；
Charge-discharge circuit is electrically connected with the feeder ear of lower electric sequential control circuit, the first end electricity with the first energy-storage module
Connection, is electrically connected with the first end of the second energy-storage module, for controlling the first end of the first energy-storage module in feeder ear power-off
Voltage decreasing rate when electric discharge is greater than the voltage decreasing rate when first end electric discharge of the second energy-storage module；
Detection circuit, the first end of detection circuit are electrically connected with the first end of the first energy-storage module, and the second of detection circuit
End is electrically connected with the first end of the second energy-storage module；
At least two delay circuits correspond, any delay at least two output ends of lower electric sequential control circuit
The control terminal of circuit is electrically connected with the output end of detection circuit, the output end of any delay circuit and lower electric sequential control circuit
Corresponding output end electrical connection；
Detection circuit is used for when the pressure difference for monitoring the first end of the second energy-storage module and the first end of the first energy-storage module
When reaching preset threshold, output control signal；
Delay circuit is under the influence of control signals, after postponing preset time, enable signal to be forbidden in output.
Further, control circuit includes: first switch tube and first resistor,
Wherein, the control terminal of first switch tube is electrically connected with the first end of detection circuit, the first end of first switch tube with
The second end of detection circuit is electrically connected；
The first end of first resistor and the second end of first switch tube are electrically connected with the output end of detection circuit, the
The second end of one resistance is grounded.
Further, charge-discharge circuit includes second resistance, wherein the first end of second resistance and the first energy storage mould
The first end of block is electrically connected with the feeder ear of lower electric sequential control circuit；The second end of second resistance and the second energy-storage module
First end electrical connection；The second end of first energy-storage module and the second end of the second energy-storage module are grounded.
Further, charge-discharge circuit includes first diode, the anode of first diode, and the first of the first energy-storage module
It holds and is electrically connected with the feeder ear of lower electric sequential control circuit；The cathode of first diode and the first end of the second energy-storage module are electrically connected
It connects；The second end of first energy-storage module and the second end of the second energy-storage module are grounded.
Further, charge-discharge circuit further includes 3rd resistor, and 3rd resistor is in parallel with the second energy-storage module.
Further, detection circuit further includes the 4th resistance, and the control terminal of first switch tube is through the 4th resistance and detection electricity
The first end on road is electrically connected.
Further, detection circuit further includes the 5th resistance, and the first end of first resistor is through the 5th resistance and first switch
The second end of pipe is electrically connected.
Further, first switch tube is PNP triode or PMOS tube.
Further, the first energy-storage module is first capacitor, and the second energy-storage module is the second capacitor.
Further, any delay circuit includes third capacitor, second switch and the 6th resistance,
Wherein, the first end of second switch is through the 6th resistance eutral grounding；The second end and third capacitor of second switch
First end be electrically connected with the output end of delay circuit；The control terminal of second switch and the control terminal of delay circuit are electrically connected
It connects；The second end of third capacitor is grounded.
It further, further include the first power-switching circuit and at least two the 7th resistance, wherein the first power supply conversion electricity
The feeder ear on road is electrically connected with the feeder ear of lower electric sequential control circuit；At least two the 7th resistance and at least two delay circuits
It corresponds, the first end of the third capacitor of any delay circuit is defeated through corresponding 7th resistance and the first power-switching circuit
Outlet electrical connection.
Second aspect, the utility model embodiment additionally provide a kind of power circuit, including at least two power supplys conversion electricity
The lower electric sequential control circuit that road and the utility model any embodiment provide, at least two outputs of lower electricity sequential control circuit
End is corresponded at least two power-switching circuits, output end and the corresponding power-switching circuit of lower electricity sequential control circuit
Enable end electrical connection；The first end of first energy-storage module is electrically connected with the feeder ear of at least two power-switching circuits, the electricity
The feeder ear of source circuit is electrically connected with the feeder ear of lower electric sequential control circuit.
It further, further include third switch, the feeder ear of power circuit passes through third switch and lower electric timing control electricity
The feeder ear on road is electrically connected.
The technical solution of the utility model embodiment passes through the first energy-storage module of setting, the second energy-storage module, charge and discharge electricity
Road, detection circuit and at least two delay circuits, wherein the feeder ear of charge-discharge circuit and lower electric sequential control circuit is electrically connected
It connects, charge-discharge circuit is electrically connected with the first end of the first energy-storage module, the first end electricity of charge-discharge circuit and the second energy-storage module
Connection, in feeder ear power-off, the voltage decreasing rate when first end of the first energy-storage module of control is discharged to be greater than second
Voltage decreasing rate when the first end electric discharge of energy-storage module；The first end of detection circuit and the first end of the first energy-storage module electricity
Connection, the second end of detection circuit are electrically connected with the first end of the second energy-storage module；At least two delay circuits and lower electric timing
At least two output ends of control circuit correspond, and the control terminal of any delay circuit and the output end of detection circuit are electrically connected
It connects, the output end of any delay circuit is electrically connected with the corresponding output end of lower electric sequential control circuit；Detection circuit is for working as
When monitoring that the pressure difference of the first end of the second energy-storage module and the first end of the first energy-storage module reaches preset threshold, output control
Signal；Delay circuit is under the influence of control signals, after postponing preset time, enable signal to be forbidden in output, so that being
Meet lower electric timing requirements when system power-off.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of lower electric sequential control circuit provided by the embodiment of the utility model；
Fig. 2 is the structural schematic diagram of another lower electric sequential control circuit provided by the embodiment of the utility model；
Fig. 3 is the structural schematic diagram of another lower electric sequential control circuit provided by the embodiment of the utility model；
Fig. 4 is the structural schematic diagram of another lower electric sequential control circuit provided by the embodiment of the utility model；
Fig. 5 is a kind of lower electric clock signal waveform diagram provided by the embodiment of the utility model；
Fig. 6 is a kind of structural schematic diagram of power circuit provided by the embodiment of the utility model；
Fig. 7 is the structural schematic diagram of another power circuit provided by the embodiment of the utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.It is understood that herein
Described specific embodiment is used only for explaining the utility model, rather than the restriction to the utility model.It further needs exist for
It is bright, part relevant to the utility model is illustrated only for ease of description, in attached drawing rather than entire infrastructure.
The utility model embodiment provides a kind of lower electric sequential control circuit.Fig. 1 is provided by the embodiment of the utility model
A kind of structural schematic diagram of lower electric sequential control circuit.The lower electric sequential control circuit 100 includes: the first energy-storage module 110, the
Two energy-storage modules 120, charge-discharge circuit 130, detection circuit 140 and at least two delay circuits 150.
Wherein, charge-discharge circuit 130 is electrically connected with the feeder ear Vi of lower electric sequential control circuit 100, charge-discharge circuit 130
It is electrically connected with the first end N11 of the first energy-storage module 110, the first end N21 of charge-discharge circuit 130 and the second energy-storage module 120
Electrical connection, charge-discharge circuit 130 is used in feeder ear Vi power-off, when the first end N11 of the first energy-storage module 110 of control discharges
Voltage decreasing rate be greater than the second energy-storage module 120 first end N21 electric discharge when voltage decreasing rate；Detection circuit 140
First end N41 be electrically connected with the first end N11 of the first energy-storage module 110, the second end N42 of detection circuit 140 and second storage
The first end N21 electrical connection of energy module 120；At least two delay circuits 150 and at least two of lower electric sequential control circuit 100
Output end Out1 is corresponded, and the control terminal Ctr1 of any delay circuit 150 is electrically connected with the output end Out2 of detection circuit 140
It connects, the output end Out3 of any delay circuit 150 is electrically connected with the corresponding output end Out1 of lower electric sequential control circuit 100；
Detection circuit 140 is used for the first end N11 as the first end N21 and the first energy-storage module 110 for monitoring the second energy-storage module 120
Pressure difference when reaching preset threshold, output control signal；Delay circuit 150 is under the influence of control signals, delay to be default
After time, enable signal is forbidden in output.
Wherein, the first energy-storage module 110 may include capacitor.Second energy-storage module 120 may include capacitor.The detection circuit
130 may include switching tube or relay.At least two delay circuits 150 delay initial time it is identical, but postpone it is default when
Between it is not exactly the same, so as to correspond at least two be electrically connected at least two output end Out1 of lower electric sequential control circuit
The lower electric moment of a power-switching circuit is different, to meet required lower electric timing.Charge-discharge circuit 130 is also used in feeder ear
When Vi normal power supply, the pressure difference of the first end N21 of the second energy-storage module 120 and the first end N11 of the first energy-storage module 110 are controlled
It less than preset threshold, such as can be zero.The control signal can be high level signal or low level signal.Detection circuit 140 is used
It is less than in the pressure difference of the first end N11 as the first end N21 and the first energy-storage module 110 for monitoring the second energy-storage module 120 pre-
If when threshold value, exporting the second control signal opposite with control signal logic.Delay circuit 150 is also used in second control signal
Under the action of, stop output and forbids enable signal.This forbids enable signal to can be high level signal or low level signal.First
The first end of energy-storage module 110 can be electrically connected with the feeder ear of at least two power-switching circuits, so that in lower electric timing control
When the feeder ear Vi power-off of circuit, the first energy-storage module 110 is powered at least two power-switching circuits, to complete lower electric mistake
Journey.
Concrete operating principle: in the feeder ear Vi normal power supply of lower electric sequential control circuit 100, the first energy-storage module
110 are charged by charge-discharge circuit 130, and the voltage stabilization of the first end N11 of the first energy-storage module 110 is to lower electric timing control
The voltage value of the feeder ear Vi of circuit；Second energy-storage module 120 is charged by charge-discharge circuit 130, and the second energy storage mould
The voltage stabilization of the first end N21 of block 120 to lower electric sequential control circuit feeder ear Vi voltage value, so when second
The pressure difference of the first end N11 of the first end N21 of energy-storage module 120 and the first energy-storage module 110 is zero, and detection circuit 140 will be defeated
The second control signal opposite with control signal logic out, delay circuit 150 stop output under the action of second control signal
Forbid enable signal.In the feeder ear Vi power-off of lower electric sequential control circuit 100, the first energy-storage module 110 passes through charge and discharge
Circuit 130 starts to discharge, and the second energy-storage module 120 starts to discharge by charge-discharge circuit 130, and controls the first energy-storage module
Voltage decreasing rate when 110 first end N11 electric discharge is greater than the voltage when first end N21 electric discharge of the second energy-storage module 120
Fall off rate, then the pressure difference of the first end N11 of the first end N21 of the second energy-storage module 120 and the first energy-storage module 110 will gradually
Increase, until reaching preset threshold, output is controlled signal, effect of the delay circuit 150 in control signal by detection circuit 140
Under, after postponing preset time, enable signal is forbidden in output, and then makes the enable end of at least two power-switching circuits under
Electric sequence is sequentially received forbid enable signal after stop working, i.e., lower electricity, with the lower electric timing needed for meeting.
The technical solution of the present embodiment passes through the first energy-storage module of setting, the second energy-storage module, charge-discharge circuit, detection electricity
Road and at least two delay circuits, wherein charge-discharge circuit is electrically connected with the feeder ear of lower electric sequential control circuit, charge and discharge electricity
Road is electrically connected with the first end of the first energy-storage module, and charge-discharge circuit is electrically connected with the first end of the second energy-storage module, is used for
When feeder ear powers off, the voltage decreasing rate when first end electric discharge of the first energy-storage module of control is greater than the of the second energy-storage module
Voltage decreasing rate when one end is discharged；The first end of detection circuit is electrically connected with the first end of the first energy-storage module, detection electricity
The second end on road is electrically connected with the first end of the second energy-storage module；At least two delay circuits and lower electric sequential control circuit are extremely
Few two output ends correspond, and the control terminal of any delay circuit is electrically connected with the output end of detection circuit, any deferred telegram
The output end on road is electrically connected with the corresponding output end of lower electric sequential control circuit；Detection circuit, which is used to work as, monitors the second energy storage
When the pressure difference of the first end of module and the first end of the first energy-storage module reaches preset threshold, output control signal；Delay circuit
For under the influence of control signals, after postponing preset time, exporting and forbidding enable signal, so that under meeting in system cut-off
Electric timing requirements.
The utility model embodiment provides another lower electric sequential control circuit.Fig. 2 provides for the utility model embodiment
Another lower electric sequential control circuit structural schematic diagram.On the basis of the above embodiments, charge-discharge circuit 130 includes the
Two resistance R2, wherein the first end N11 of the first end of second resistance R2 and the first energy-storage module 110 with lower electric timing control
The feeder ear Vi of circuit processed is electrically connected；The second end of second resistance R2 is electrically connected with the first end N21 of the second energy-storage module 120；
The second end N22 of the second end N12 of first energy-storage module 110 and the second energy-storage module 120 is grounded.
Wherein, Fig. 2 illustratively draws the case where the first energy-storage module 110 is first capacitor C1.Fig. 2 is illustratively drawn
The case where second energy-storage module 120 is the second capacitor C2.Fig. 2 illustratively draws the feeder ear of lower electric sequential control circuit 100
The case where Vi is electrically connected with the feeder ear V2 of at least two power-switching circuits 200.At least two power-switching circuit 200 can
It is equivalent to a biggish resistance.
It should be noted that in the feeder ear Vi normal power supply of lower electric sequential control circuit 100, the first energy-storage module
The voltage of the first end N21 of the voltage of 110 first end N11 and the second energy-storage module 120, stable to lower electric timing control
The voltage value of the feeder ear Vi of circuit processed, so when the second energy-storage module 120 first end N21 and the first energy-storage module
The voltage of 110 first end N11 is equal, pressure difference zero.In the feeder ear Vi power-off of lower electric sequential control circuit 100, the
One energy-storage module 110 and the second energy-storage module 120 start to discharge, the first end N21 of the second energy-storage module 120 and the first energy storage
The pressure difference of the first end N11 of module 110 isWherein, V1For the first energy-storage module
The voltage-to-ground of 110 first end N11, V2For the voltage-to-ground of the first end N21 of the second energy-storage module 120, C1For first capacitor
The capacitance of C1, C2For the capacitance of the second capacitor C2, R2For the resistance value of second resistance R2, RloadFor at least two power-switching circuits
200 equivalent impedance, VsFor lower electric sequential control circuit feeder ear Vi normal power supply when voltage value, the first energy storage mould
The voltage decreasing rate of the first end N11 of block 110 by least two power-switching circuits 200 equivalent impedance and first capacitor C1
It codetermines, time constant Rload*C1；The voltage decreasing rate of the first end N21 of second energy-storage module 120 is mainly by second
Resistance R2 and the second capacitor C2 is determined, when the first end N21 of the second energy-storage module 120 and the first end of the first energy-storage module 110
After the pressure difference of N11 increases to preset threshold, output is controlled signal by the output end Out2 of detection circuit 140；Delay circuit 150 exists
Under the action of the control signal of control terminal Ctr1 input, after postponing preset time, enable signal is forbidden in output.It wherein, can basis
Need to be arranged the resistance value of second resistance R2, to adjust the voltage decreasing rate of the first end N21 of the second energy-storage module 120, to prevent
Only circuit is by external interference false triggering.
The utility model embodiment provides another lower electric sequential control circuit.Fig. 3 provides for the utility model embodiment
Another lower electric sequential control circuit structural schematic diagram.On the basis of the above embodiments, charge-discharge circuit 130 includes the
One diode D1, the anode of first diode D1, the first end N11 of the first energy-storage module 110 and lower electric sequential control circuit
Feeder ear Vi electrical connection；The cathode of first diode D1 is electrically connected with the first end N21 of the second energy-storage module 120；First energy storage
The second end N22 of the second end N12 of module 110 and the second energy-storage module 120 is grounded.
Wherein, when the feeder ear Vi of lower electric sequential control circuit 100 becomes normal power supply from powering off, first diode D1
The voltage of the first end N21 of conducting, the voltage of the first end N11 of the first energy-storage module 110 and the second energy-storage module 120,
The gradually voltage value of the feeder ear Vi of stable to lower electric sequential control circuit 100, so when the second energy-storage module 120 the
One end N21 is approximately equal with the voltage of first end N11 of the first energy-storage module 110, and pressure difference is approximately zero.In lower electric timing control
When the feeder ear Vi power-off of circuit 100 processed, the first energy-storage module 110 provides electric energy at least two power-switching circuits 200, i.e.,
Electric discharge, and first diode D1 will be turned off, the second energy-storage module 120 hardly discharges, the first end of the second energy-storage module 120
The pressure difference of N21 and the first end N11 of the first energy-storage module 110 isWherein, V1For the first storage
The voltage-to-ground of the first end N11 of energy module 110, V2For the voltage-to-ground of the first end N21 of the second energy-storage module 120, C1It is
The capacitance of one capacitor C1, RloadFor the equivalent impedance of at least two power-switching circuits 200, VsFor lower electric sequential control circuit
Voltage value when feeder ear Vi normal power supply, the voltage decreasing rate of the first end N11 of the first energy-storage module 110 is by least
The equivalent impedance and first capacitor C1 co-determination of two power-switching circuits 200, time constant Rload*C1；Second energy storage mould
The voltage decreasing rate of the first end N21 of block 120 is approximately zero, first end N21 and the first energy storage when the second energy-storage module 120
After the pressure difference of the first end N11 of module 110 increases to preset threshold, the output end Out2 of detection circuit 140 believes output control
Number；Delay circuit 150 is under the action of the control signal that control terminal Ctr1 is inputted, and after postponing preset time, output is forbidden enabling
Signal.Optionally, charge-discharge circuit may also include the 8th resistance, in parallel with first diode, and the 8th electricity can be set as needed
The resistance value of resistance, to adjust the voltage decreasing rate of the first end of the second energy-storage module, to prevent circuit by external interference false triggering.
The utility model embodiment provides another lower electric sequential control circuit.Fig. 4 provides for the utility model embodiment
Another lower electric sequential control circuit structural schematic diagram.On the basis of the above embodiments, charge-discharge circuit 130 further includes
3rd resistor R3,3rd resistor R3 are in parallel with the second energy-storage module 120.
Wherein, in the feeder ear Vi normal power supply of lower electric sequential control circuit, first diode D1 conducting, the first energy storage
When the voltage of the first end N21 of the voltage of the first end N11 of module 110 and the second energy-storage module 120, stable to lower electricity
The voltage value of the feeder ear Vi of sequence control circuit, so when the second energy-storage module 120 first end N21 and the first energy storage mould
The voltage of the first end N11 of block 110 is approximately equal, and pressure difference is approximately zero, and the electric current that 3rd resistor R3 flows through at this time is not zero
(there is additional static current consumption).In the feeder ear Vi power-off of lower electric sequential control circuit, the first energy-storage module 110
Start to discharge with the second energy-storage module 120, first diode D1 shutdown, the first end N21 and first of the second energy-storage module 120
The pressure difference of the first end N11 of energy-storage module 110 isWherein, V1For the first energy storage
The voltage-to-ground of the first end N11 of module 110, V2For the voltage-to-ground of the first end N21 of the second energy-storage module 120, C1It is first
The capacitance of capacitor C1, C2For the capacitance of the second capacitor C2, R3For the resistance value of 3rd resistor R3, RloadFor the conversion of at least two power supplys
The equivalent impedance of circuit 200, VsFor lower electric sequential control circuit feeder ear Vi normal power supply when voltage value, the first storage
The voltage decreasing rate of the first end N11 of energy module 110 is by the equivalent impedance of at least two power-switching circuits 200 and the first electricity
Hold C1 to codetermine, time constant Rload*C1；The voltage decreasing rate of the first end N21 of second energy-storage module 120 mainly by
3rd resistor R3 and the second capacitor C2 determine, when the second energy-storage module 120 first end N21 and the first energy-storage module 110 the
After the pressure difference of one end N11 increases to preset threshold, output is controlled signal by the output end Out2 of detection circuit 140；Delay circuit
150 under the action of the control signal of control terminal Ctr1 input, and after postponing preset time, enable signal is forbidden in output.Wherein, may be used
The resistance value of 3rd resistor R3 is set as needed, to adjust the voltage decreasing rate of the first end N21 of the second energy-storage module 120,
To prevent circuit by external interference false triggering.
It should be noted that feeder ear of the charge-discharge circuit 130 provided in Fig. 2 and Fig. 3 in lower electric sequential control circuit
When Vi normal power supply, without additional static current consumption, that is, the electric current for flowing through second resistance R2 or first diode D1 is zero.
The utility model embodiment provides another lower electric sequential control circuit.On the basis of the above embodiments, continue
Referring to fig. 2, detection circuit 140 includes: first switch tube Q1 and first resistor R1.
Wherein, the first end N41 of the control terminal with detection circuit 140 of first switch tube Q1 is electrically connected, first switch tube Q1
First end be electrically connected with the second end N42 of detection circuit 140；The first end of first resistor R1 and first switch tube Q1's
Second end is electrically connected with the output end Out2 of detection circuit 140, the second end ground connection of first resistor R1.
Wherein, optionally, first switch tube Q1 is PNP triode or PMOS tube.Fig. 2 illustratively draws first switch tube
The case where Q1 is PNP triode.In the feeder ear Vi normal power supply of lower electric sequential control circuit, the second energy-storage module 120
The pressure difference very little of the first end N11 of first end N21 and the first energy-storage module 110 is less than preset threshold, is less than first switch tube Q1
On state threshold voltage absolute value, therefore between the first end and second end of first switch tube Q1 be off state, first resistor
The voltage-to-ground of the first end of R1 is zero, therefore the output end Out2 of detection circuit 140 will export a low level signal, is equivalent to
Two control signals, delay circuit 150 stop output and forbid enable signal under the action of second control signal；Fig. 5 is that this is practical
A kind of lower electric clock signal waveform diagram that new embodiment provides.Wherein, horizontal axis indicates that time t, the longitudinal axis respectively indicate inspection
The signal s2 of the output end Out3 output of the signal s1 and two delay circuits 150 of the output end Out2 output of slowdown monitoring circuit 140
With signal s3, the delay time of the corresponding delay circuit of signal s2 is greater than the delay time of the corresponding delay circuit of signal s3.Such as
Shown in Fig. 5, inscribed in t1 electric sequential control circuit feeder ear Vi power-off when, the first end N21 of the second energy-storage module 120 with
The pressure difference of the first end N11 of first energy-storage module 110 is gradually increased, and reaches preset threshold at the t2 moment, is greater than or equal to first
The absolute value of the on state threshold voltage of switching tube Q1, therefore first switch tube Q1 will be connected, the first end of first resistor R1 is over the ground
Voltage close to the second energy-storage module 120 first end N21 voltage, therefore will to export one high by the output end Out2 of detection circuit 140
Level signal (referring to signal s1 in Fig. 5) is equivalent to control signal, and delay circuit 150 under the influence of control signals, prohibit by output
Only enable signal is (referring to signal s2 in Fig. 5 and signal s3, so that two power-switching circuits corresponding with two delay circuits point
Electricity is not inscribed at t4 moment and t3).
Optionally, on the basis of the above embodiments, with continued reference to Fig. 3 or Fig. 4, detection circuit 140 further includes the 4th electricity
R4 is hindered, the control terminal of first switch tube Q1 is electrically connected through the 4th resistance R4 with the first end N41 of detection circuit 140.Wherein, the 4th
Resistance R4 plays metering function.
Optionally, on the basis of the above embodiments, with continued reference to Fig. 3 or Fig. 4, detection circuit 140 further includes the 5th electricity
R5 is hindered, the first end of first resistor R1 is electrically connected through the 5th resistance R5 with the second end of first switch tube Q1.Wherein, first resistor
R1 and the 5th resistance R5 constitutes potential-divider network, to reduce the output end Out2 of detection circuit 140 in first switch tube Q1 conducting
Voltage, with voltage class ranges needed for meeting late-class circuit.
The utility model embodiment provides another lower electric sequential control circuit.On the basis of the above embodiments, continue
Referring to fig. 2, Fig. 3 or Fig. 4, any delay circuit 150 include third capacitor C3, second switch Q2 and the 6th resistance R6.
Wherein, optionally, as shown in Fig. 2, the first end of second switch Q2 is grounded through the 6th resistance R6；Second switch
The second end of Q2 and the first end of third capacitor C3 are electrically connected with the output end Out3 of delay circuit 150；Second switch
The control terminal of Q2 is electrically connected with the control terminal Ctr1 of delay circuit 150；The second end of third capacitor C3 is grounded.Optionally, such as Fig. 3
It is shown, the first end ground connection of second switch Q2；The second end of second switch Q2 is through the 6th resistance R6 and delay circuit 150
The output end Out3 of output end Out3 electrical connection, delay circuit 150 is grounded through third capacitor C3；The control terminal of second switch Q2
It is electrically connected with the control terminal Ctr1 of delay circuit 150.Second switch Q2 can be metal-oxide-semiconductor or triode.Fig. 2 and Fig. 3 example
Property draw second switch Q2 be NMOS tube the case where.It should be noted that being between the electrical node with same tag
It is electrically connected, such as N1, N2 and N3, such as indicates between the terminal of N1 label to be electrically connected, indicate the electrical node of N2 label
Between for be electrically connected, indicate N3 label electrical node between for be electrically connected.
Wherein, second switch Q2 is connected under the action of controlling signal (such as can be high level signal), so that the
Three capacitor C3 start electric discharge (then the voltage of the output end Out3 of delay circuit 150 will gradually decrease, referring to Fig. 5, signal s2 and letter
Number s3 is begun to decline after the t2 moment), the velocity of discharge is determined by third capacitor C3 and the 6th resistance R6, i.e. decision delay time,
Until that is, enabled letter is forbidden in output when third capacitor C3 is discharged to lower than the second preset threshold (being equivalent to a low level signal)
Number.Delay time constant (i.e. the product of the capacitance of third capacitor C3 and the resistance value of the 6th resistance R6) is bigger, and delay time is longer.
Second switch Q2 is turned off under the action of the second control signal opposite with control signal logic, i.e., third capacitor C3 is not put
The voltage of electricity, the both ends third capacitor C3 is higher than the second preset threshold (being equivalent to a high level signal), that is, stops output and forbid making
It can signal.It can set equal for the 6th resistance value R6 of each delay circuit 150, according to the requirement of delay time, third is set
The capacitance of capacitor C3.
Optionally, on the basis of the above embodiments, with continued reference to Fig. 2, which further includes first
Power-switching circuit 160 and at least two the 7th resistance R7, wherein the feeder ear V1 of the first power-switching circuit 160 and lower electricity
The feeder ear Vi of sequential control circuit 100 is electrically connected；At least two the 7th resistance R7 and at least two delay circuit 150 1 are a pair of
It answers, the first end of the third capacitor C3 of any delay circuit 150 is through corresponding 7th resistance R7 and the first power-switching circuit 160
Output end Out4 electrical connection.
Wherein, in the feeder ear Vi normal power supply of lower electric sequential control circuit 100, second switch Q2 shutdown, third
Capacitor C3 both end voltage is stablized to the output voltage of the output end Out4 of the first power-switching circuit 160, that is, it is default to be higher than second
Threshold value (is equivalent to a high level signal), that is, stops output and forbid enable signal.The resistance value of 6th resistance R6 is much smaller than the 7th electricity
Hinder the resistance value of R7.In the feeder ear Vi power-off of lower electric sequential control circuit 100, second switch Q2 conducting, no matter the first electricity
Whether power-switching circuit 160 stops working, resistance value due to the resistance value of the 6th resistance R6 less than the 7th resistance R7, therefore third capacitor
The partial pressure that voltage at the end of C3 electric discharge is the 6th resistance R6, value very little (it is low can be equivalent to one less than the second preset threshold
Level signal), to guarantee that enable signal is forbidden in output after the delay circuit 150 delay preset time.It should be noted that first
Power-switching circuit can be one at least two power-switching circuits.
It should be noted that lower electric sequential control circuit provided by the embodiment of the utility model only needs the MOS of signal rank
Pipe, triode and capacitance resistance ware, it is at low cost.
The utility model embodiment provides a kind of power circuit.Fig. 6 is a kind of power supply provided by the embodiment of the utility model
The structural schematic diagram of circuit.The power circuit 10 includes that at least two power-switching circuits 200 and the utility model are arbitrarily implemented
The lower electric sequential control circuit 100 that example provides, at least two output end Out1 and at least two of lower electricity sequential control circuit 100
Power-switching circuit 200 corresponds, output end Out1 and the corresponding power-switching circuit of lower electricity sequential control circuit 100
200 enable end EN electrical connection；The power supply of the first end N11 of first energy-storage module 110 and at least two power-switching circuits 200
V2 electrical connection is held, the feeder ear V3 of the power circuit 10 is electrically connected with the feeder ear Vi of lower electric sequential control circuit.
Wherein, any power-switching circuit 200 can be switching power circuit or linear power source circuit.When power supply converts electricity
It when the enable end EN on road 200 receives enable signal, then starts to work, the voltage that feeder ear V2 is inputted is boosted or decompression is made
With, be converted into required voltage, with for late-class circuit power supply.The late-class circuit may include signal processor kernel and its peripheral hardware
Circuit etc., for example, the signal processor can be field programmable gate array (Field-Programmable Gate Array,
FPGA) or micro-control unit (Microcontroller Unit, MCU), which may include following at least one: mould
Number converter, digital analog converter and flash memory etc..Forbid enabled letter when the enable end EN of power-switching circuit 200 is received
Number when, then stop working, output voltage zero.
Power circuit provided by the embodiment of the utility model includes the lower electric sequential control circuit in above-described embodiment, therefore
Power circuit provided by the embodiment of the utility model also has beneficial effect described in above-described embodiment, no longer superfluous herein
It states.
The utility model embodiment provides another power circuit.Fig. 7 be it is provided by the embodiment of the utility model another
The structural schematic diagram of power circuit.On the basis of the above embodiments, which further includes third switch 300, power supply
The feeder ear V3 of circuit is electrically connected by third switch 300 with the feeder ear Vi of lower electric sequential control circuit 100.
Wherein, which can be self-locking button switch.Instantly the feeder ear Vi of electric sequential control circuit is normal
When power supply, even if third switch 300 is disconnected, which is able to satisfy lower electric timing requirements.
Note that above are only the preferred embodiment and institute's application technology principle of the utility model.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, is able to carry out for a person skilled in the art various bright
Aobvious variation is readjusted, be combined with each other and is substituted without departing from the protection scope of the utility model.Therefore, although passing through
Above embodiments are described in further detail the utility model, but the utility model is not limited only to the above implementation
Example can also include more other equivalent embodiments in the case where not departing from the utility model design, and the utility model
Range is determined by the scope of the appended claims.
Claims (13)
1. a kind of lower electric sequential control circuit characterized by comprising
First energy-storage module；
Second energy-storage module；
Charge-discharge circuit is electrically connected with the feeder ear of lower electric sequential control circuit, the first end electricity with first energy-storage module
Connection, is electrically connected with the first end of second energy-storage module, for controlling first energy storage in feeder ear power-off
Voltage decreasing rate when the first end electric discharge of module is greater than the voltage decline when first end electric discharge of second energy-storage module
Rate；
Detection circuit, the first end of the detection circuit are electrically connected with the first end of first energy-storage module, the detection electricity
The second end on road is electrically connected with the first end of second energy-storage module；
At least two delay circuits are corresponded at least two output ends of the lower electric sequential control circuit, any described
The control terminal of delay circuit is electrically connected with the output end of the detection circuit, the output end of any delay circuit and it is described under
The corresponding output end of electric sequential control circuit is electrically connected；
The detection circuit is used for first when the first end and first energy-storage module that monitor second energy-storage module
When the pressure difference at end reaches preset threshold, output control signal；
The delay circuit is used under the action of the control signal, and after postponing preset time, enable signal is forbidden in output.
2. lower electric sequential control circuit according to claim 1, which is characterized in that the detection circuit includes: first to open
Pipe and first resistor are closed,
Wherein, the control terminal of the first switch tube is electrically connected with the first end of the detection circuit, the first switch tube
First end is electrically connected with the second end of the detection circuit；
The second end of the first end of the first resistor and the first switch tube is electric with the output end of the detection circuit
Connection, the second end ground connection of the first resistor.
3. lower electric sequential control circuit according to claim 1, which is characterized in that the charge-discharge circuit includes the second electricity
Resistance, wherein the first end of the second resistance and the first end of first energy-storage module with the lower electric timing control
The feeder ear of circuit is electrically connected；The second end of the second resistance is electrically connected with the first end of second energy-storage module；It is described
The second end of first energy-storage module and the second end of the second energy-storage module are grounded.
4. lower electric sequential control circuit according to claim 1, which is characterized in that the charge-discharge circuit includes the one or two
Pole pipe, the anode of the first diode, the confession of the first end of first energy-storage module and the lower electric sequential control circuit
Electric end electrical connection；The cathode of first diode is electrically connected with the first end of second energy-storage module；First energy-storage module
Second end and the second end of the second energy-storage module be grounded.
5. lower electric sequential control circuit according to claim 4, which is characterized in that the charge-discharge circuit further includes third
Resistance, the 3rd resistor are in parallel with second energy-storage module.
6. lower electric sequential control circuit according to claim 2, which is characterized in that the detection circuit further includes the 4th electricity
Resistance, the control terminal of the first switch tube are electrically connected through the 4th resistance with the first end of the detection circuit.
7. lower electric sequential control circuit according to claim 2, which is characterized in that the detection circuit further includes the 5th electricity
Resistance, the first end of the first resistor are electrically connected through the 5th resistance with the second end of the first switch tube.
8. lower electric sequential control circuit according to claim 2, which is characterized in that the first switch tube is tri- pole PNP
Pipe or PMOS tube.
9. lower electric sequential control circuit according to claim 1, which is characterized in that first energy-storage module is the first electricity
Hold, second energy-storage module is the second capacitor.
10. lower electric sequential control circuit according to claim 1, which is characterized in that any delay circuit includes the
Three capacitors, second switch and the 6th resistance,
Wherein, the first end of the second switch is through the 6th resistance eutral grounding；The second end of the second switch, and
The first end of the third capacitor is electrically connected with the output end of the delay circuit；The control terminal of the second switch and institute
State the control terminal electrical connection of delay circuit；The second end of the third capacitor is grounded.
11. lower electric sequential control circuit according to claim 10, which is characterized in that further include the first power-switching circuit
With at least two the 7th resistance, wherein the feeder ear of first power-switching circuit and the lower electric sequential control circuit
Feeder ear electrical connection；At least two the 7th resistance and at least two delay circuit correspond, any delay
The first end of the third capacitor of circuit is electrically connected through corresponding 7th resistance with the output end of first power-switching circuit.
12. a kind of power circuit, which is characterized in that any described including at least two power-switching circuits and claim 1-11
Lower electric sequential control circuit, at least two output ends and at least two power supply of the lower electric sequential control circuit convert
Circuit corresponds, and the output end of the lower electric sequential control circuit is electrically connected with the enable end of corresponding power-switching circuit；
The first end of first energy-storage module is electrically connected with the feeder ear of at least two power-switching circuit, the power circuit
Feeder ear is electrically connected with the feeder ear of the lower electric sequential control circuit.
13. power circuit according to claim 12, which is characterized in that it further include third switch, the power circuit
Feeder ear is switched by the third and is electrically connected with the feeder ear of the lower electric sequential control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821877783.1U CN209014942U (en) | 2018-11-14 | 2018-11-14 | A kind of lower electric sequential control circuit and power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821877783.1U CN209014942U (en) | 2018-11-14 | 2018-11-14 | A kind of lower electric sequential control circuit and power circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209014942U true CN209014942U (en) | 2019-06-21 |
Family
ID=66842492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821877783.1U Active CN209014942U (en) | 2018-11-14 | 2018-11-14 | A kind of lower electric sequential control circuit and power circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209014942U (en) |
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2018
- 2018-11-14 CN CN201821877783.1U patent/CN209014942U/en active Active
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