CN109951083A - Multiple-channel output isolated DC power supply and overload protection and load regulation compensation circuit - Google Patents
Multiple-channel output isolated DC power supply and overload protection and load regulation compensation circuit Download PDFInfo
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Abstract
The present invention discloses a kind of multiple-channel output isolated DC power supply and its overload protecting circuit and load regulation compensation circuit, and the multiple-channel output isolated DC power supply is mainly made of prime isolation power conversion circuit, rear class multichannel power switch circuit, multichannel overload protecting circuit, load regulation compensation circuit and digital control circuit；The multiple-channel output isolated DC power supply realizes that the extension of output channel quantity, every road output can be achieved independent on-off and control and have independent overload protection function by increasing power switch circuit, and every road power supply reliability is high；The load regulation compensation circuit that the present invention designs, can effectively reduce the load regulation of each road output, and the road Shi Ge power supply quality is consistent.
Description
Technical field
The present invention relates to a kind of multiple-channel output isolated DC power supplys, belong to power electronic technique and electrical technology field.
Background technique
Power supply is all kinds of airborne, vehicle-mounted or household electricity equipment important components, increasingly multiple with electrical equipment
The requirement of hydridization, grade and number of channels to power source supplying voltage is continuously increased, and the demand of multiple-output electric power increases, simultaneously
Requirement to each road output voltage quality and reliability is continuously improved.
The multiple-output electric power developed at present is more to realize often through the method for multiple windings is arranged in transformer secondary
Road output；However use the multiple-output electric power of transformer secondary multiple secondary winding is general only to carry out closed loop control to main output voltage
System, and other each road outputs are then exported as bypass；Although main road output voltage can have preferable stability, bypass output
Voltage often has that precision is low, is not suitable for requiring output channel quantity more and the higher field of each road power supply quality
It closes；The multiple-output electric power output channel realized based on transformer secondary multiple secondary winding studied at present mainly within 3 tunnels,
And with the increase of output number, the efficiency and power density of power supply will be decreased obviously；In addition, if exporting any road load hair
Short trouble has been given birth to, the overload fault defencive function of power supply will turn off primary side power tube, and cause other each road outputs to be turned off, from
And the operation of multiple load equipments is influenced, reliability is low.
Summary of the invention
The technical problems to be solved by the invention are that it is defeated to provide a kind of multichannel for the defects of foregoing background and deficiency
Isolated DC power supply and its overload protecting circuit and load regulation compensation circuit out, not only can easily realize output channel number
The extension of amount, and the output of each road all has lesser load regulation, furthermore every road has the control of independent on-off and overload fault
Defencive function, when overload fault occurs for any road output, only disengagement failure road is exported, so that it is normal to can guarantee that other each roads are continued
Operation, high reliablity.
In order to solve the above-mentioned technical problem, the present invention specifically adopts the following technical scheme that
A kind of multiple-channel output isolated DC power supply, characterized by comprising: isolation power conversion circuit, multichannel power switch
Circuit, multichannel overload protecting circuit, dsp controller and communicating circuit, load regulation compensation circuit；The multichannel power switch
Circuit includes multiple power switch circuits, and the multichannel overload protecting circuit includes multiple overload protecting circuits, the multiple function
Rate switching circuit and the multiple overload protecting circuit correspond；The output of the isolation power conversion circuit is adjusted as load
The input of whole rate compensation circuit, the output voltage of load regulation compensation circuit exported all the way as isolation power conversion circuit
Sampled signal is connected to dsp controller and communicating circuit, and driving signal is obtained after dsp controller is handled and is applied to isolation function
Rate translation circuit, input of the another output of load regulation compensation circuit as multichannel power switch circuit, dsp controller
The control signal that extraneous input is received with communicating circuit is applied to multichannel power switch circuit and realizes the multiple power after processing
The independent on-off of switching circuit controls, and the current detecting amount of power switch circuit is separately input to corresponding overload protecting circuit,
The overload protection control signal of overload protecting circuit output inputs corresponding power switch circuit respectively.
A kind of multichannel overload protecting circuit is applied to multiple-channel output isolated DC power supply, the multiple-channel output isolated DC
Power supply includes the power switch circuit of multiple independent on-off controls, it is characterised in that multichannel overload protecting circuit includes multiple overloads
Circuit is protected, overload protecting circuit and power switch circuit correspond；The overload protecting circuit includes: output electric current measure
Circuit, short-circuit comparison circuit, overcurrent delay circuit, overcurrent comparison circuit, current sense resistor in multichannel power tube switching circuit
Pressure drop is input to output current detection circuit, and the output of output current detection circuit is input to short-circuit comparison circuit and overcurrent delay
Circuit, the output of overcurrent delay circuit are input to overcurrent comparison circuit, and overcurrent short circuit comparison circuit is defeated with overcurrent comparison circuit
Corresponding power switch circuit is input to as overload protection control signal out.
A kind of load regulation compensation circuit is applied to multiple-channel output isolated DC power supply, characterized by comprising: electric current
Detection circuit, non-isolated booster circuit, reference circuit, conditioning circuit, power supply voltage regulator circuit, the isolation power conversion of DC power supply
The output of circuit is supplied respectively as the input of current detection circuit, power voltage regulator circuit, non-isolated booster circuit and conditioning circuit
The output of electric voltage regulator circuit is connected in the feeder ear of current detection circuit, and the output of non-isolated booster circuit is connected in the sum of conditioning circuit
The output of the feeder ear of reference circuit, reference circuit inputs conditioning circuit；The input conditioning electricity of output all the way of current detection circuit
Road, input of the another output as multichannel power switch circuit；The output of conditioning circuit is as isolation power conversion circuit
Output voltage sampled signal.
It is had the beneficial effect that using bring after technical solution of the present invention:
(1) extension of power supply output channel quantity can be easily realized；
(2) difference without main road and bypass, every road have independent on-off control ability；
(3) every road output has independent overload protection ability, and it is normal that any road generation overload fault does not influence other each roads
Work；
(4) load regulation of each road output can be effectively reduced, the road Shi Mei power supply quality is consistent；
(5) realize that simply high reliablity is at low cost.
Detailed description of the invention
Fig. 1 is the functional block diagram of multiple-channel output isolated DC power supply of the invention；
Fig. 2 is the functional block diagram of multiple-output electric power overload protecting circuit of the invention；
Fig. 3 is the functional block diagram of multi-output power source loads regulation compensation circuit of the invention；
Fig. 4 is one specific embodiment circuit diagram of multiple-channel output isolated DC power supply of the invention；
Fig. 5 is one specific embodiment circuit diagram of multiple-output electric power overload protecting circuit of the invention；
Fig. 6 is one specific embodiment circuit diagram of multi-output power source loads regulation compensation circuit of the invention；
Specific embodiment
Some key technologies according to the present invention are discussed in detail, with reference to the accompanying drawing to support claim elements；For
The objectives, technical solutions, and advantages of the present invention are more clearly understood, with reference to the accompanying drawings and embodiments, to the present invention carry out into
One step is described in detail.
Embodiment 1
Fig. 1 is the functional block diagram of multiple-channel output isolated DC power supply；Direct-flow input signal VinThrough power conversion circuit 1 is isolated
Afterwards, output signal VoTo load regulation compensation circuit 5,5 output signal V of load regulation compensation circuito' open to multichannel power
Powered-down 2 input terminal of road.Multichannel power switch circuit 2 includes n power switch circuit, and each power switch circuit rear end is corresponding all the way
Independent output Vo1~Von.Multichannel overload protecting circuit 3 includes n overload protecting circuit, overload protecting circuit and power switch
Circuit corresponds.Power switch circuit current detecting amount Vs1~VsnInput corresponding overload protecting circuit, overload protecting circuit
The short-circuit protection signal V of outputshort1~Vshort5With overcurrent protection signal Vover1~Vover5It is input to corresponding power tube switch
Circuit carries out overload protection.Control signal CMD1~n that each power switch circuit is exported by dsp controller and communicating circuit 4 into
The independent on-off control of row；Load regulation compensation circuit 5 can be adjusted by the output electric current of detection isolation power conversion circuit 1
The load regulation of the output voltage of whole converter, the road Shi Mei power output effectively reduces.
Fig. 2 is the functional block diagram of multiple-output electric power overload protecting circuit；By taking the first via as an example, the electricity of power switch circuit
Flow detection resistance pressure drop Vs1It is input to output current detection circuit 6,6 output electric current measure amount LCS of output current detection circuit is defeated
Enter to short-circuit comparison circuit 7 and overcurrent delay circuit 8, the output of overcurrent delay circuit 8 and is input to overcurrent after certain time-delay
The short trouble of comparison circuit 9, short circuit relatively circuit output protects signal Vshort1With the over current fault of overcurrent comparison circuit output
Protect signal Vover1It is input to corresponding power switch circuit and realizes independent overload protection.
Fig. 4 is the specific implementation of multiple-channel output isolated DC power supply of the invention, realizes 5 based on half-bridge logical link control (LLC) resonant circuit
Road independently exports；Half-bridge logical link control (LLC) resonant circuit is as isolation power conversion circuit 1, and half-bridge logical link control (LLC) resonant circuit rear end is through overload tune
It is connected to that 5 roads are independent and identical power switch circuit after whole rate compensation circuit 3；Fig. 5 is multiple-output electric power mistake of the invention
The specific implementation of protection circuit wherein all the way is carried, the overload protection of every road output is realized by amplifier and comparator and is applied to function
The driving circuit of rate switching circuit.
By taking the first via as an example, power switch circuit is by a current sense resistor Rsense1, power tube S1And it is corresponding only
Vertical driving circuit is constituted；Extraneous switch control signal is only by being applied to 5 tunnel of rear class after dsp controller and the processing of communicating circuit 4
Vertical driving circuit realizes the independent on-off control of 5 tunnels output；The corresponding each road of driving circuit of 5 road power switch circuit of rear class is equal
Identical and mutual independence, schematic circuit as shown in figure 5, driving circuit is made of totem-pote circuit and RC feed circuit, control by DSP
Device output switch control signal CMD1 processed be applied to totem front end with door, control power tube S1On-off, wherein resistance Rup、
Rdown、Rg、RfWith capacitor CfSize determine power tube S1Switching speed, detection resistance Rsense1On pressure drop put by ratio
Big device A1 obtains current detection value LCS, when LCS is greater than reference voltage Ref1, judges that over current fault occurs for output, at this time capacitor
CaIt discharging, the output voltage of amplifier A2 is declined by given pace, when output is less than reference voltage Ref2, comparator COM1
Output Vover1Low level is become from high level, and be applied to totem front end with door, control power tube S1Shutdown, cut off
Flow failure；And when current detection value is greater than reference voltage Ref3, judge that short trouble occurs for output, at this time comparator COM2
Export Vshort1Low level is become from high level, controls triode T3It is open-minded, due to T3One end is connected to power tube S1Source electrode, separately
Diode D is passed through in one end1It is connected to power tube S1Grid, therefore T3Opening rear power tube gate source voltage will be rapid by a negative pressure
Become diode turn-on voltage, to make power tube S1It rapidly switches off, cuts off load short circuits failure；But since rear class power is opened
The presence of detection resistance and power tube conducting resistance in powered-down road will lead to each road output loading regulation and increase.
Fig. 3 is the functional block diagram of load regulation compensation circuit of the invention, which can solve due to rear class power
The problem of load regulation caused by switching circuit increases；Current detection circuit 10 is serially connected in isolation power conversion circuit first
Between 1 and multichannel power switch circuit 2, which uses the output V of power supply voltage regulator circuit 14c1It is powered,
It detects the output electric current of converter and is converted into voltage Vh, by current detecting amount VhIt is connected to conditioning circuit 13 as input quantity,
Conditioning circuit 13 by non-isolated booster circuit 11 output Vc2It is powered, Vc2It needs to be greater than Vo, the generation of reference circuit 12 one
Fixed reference voltage VxIt is connected to conditioning circuit 13 as input quantity, conditioning circuit exports offset voltage VsenseAs isolation power
The output voltage sampled value of translation circuit 1；When power take-off load current increases, if being compensated without load regulation,
Depending on prime output voltage VoIt is held essentially constant under pressure stabilizing control, at this time since power conversion circuit 1 is isolated to load in prime
Between there are certain resistance, including current sense resistor, power tube conducting resistance and trace resistances etc., load voltage can be made to subtract
It is small；And when the effect of load regulation compensation circuit, if certain road output load current increases, conditioning circuit output voltage at this time
VsenseIt will reduce, the output voltage for adjusting isolation power conversion circuit 1 increases, if voltage increase just compensates road load electricity
The variation of pressure, can the road Shi Gai load voltage be basically unchanged, the load regulation of each road output is effectively reduced.
Fig. 6 is the specific implementation of multiple-channel output isolated DC power supply load regulation rate compensation circuit of the invention；Such as Fig. 6 institute
Show, linear voltage regulator U2 (model LP2950 is selected in figure), capacitor C1And C2Voltage stabilizing power supplying circuit 14 is formed, isolation power becomes
Change the output V of circuit 1oIt is connected in capacitor C1One end and linear voltage regulator U2 input terminal, capacitor C1The other end ground connection, linearly
The output of voltage-stablizer U2 is connected in capacitor C2One end, capacitor C2The other end ground connection；Current detecting chip U1, capacitor C3And capacitor
C4Current detection circuit 10 is formed, the output V of power conversion circuit 1 is isolatedoIt is connected in the current input terminal of current detecting chip U1,
The current output terminal V of current detecting chip U1o' connection multichannel power switch circuit 2, U2, which is exported, is connected in capacitor C3One end and electricity
Flow the feeder ear Vcc, capacitor C of detection chip U13The other end ground connection, the filtering termination capacitor C of current detecting chip U14One
End, capacitor C4Other end ground connection, the detection of current detecting chip U1 exports VhInput as conditioning circuit 13；Non-isolated liter
Press chip U3 (model ADP1612ARMZ-R7 is selected in figure), capacitor C5, capacitor C6, resistance R8, resistance R9, resistance R10, inductance
L1With diode D2Non-isolated booster circuit 11 is formed, the output V of power conversion circuit 1 is isolatedoIt is connected in non-isolated boost chip U3
Input terminal and inductance L1One end, inductance L1Another termination U3 the end SW and diode D2Anode, capacitor C5One end connect
In the end SS of U3, capacitor C5The other end ground connection, resistance R8One end be connected in the end COMP of U3, resistance R8Another termination capacitor
C6One end, capacitor C6The other end ground connection, resistance R9A termination and the end FB of U3 and resistance R10One end, resistance R9It is another
One end ground connection, resistance R10Another terminating diode D2Cathode, diode D2Cathode be connected to the positive power supply of conditioning circuit 8
The feeder ear at end and reference circuit 12；Voltage reference chip U4 (model LM236H-2.5 is selected in figure), resistance R5, resistance R6、
Resistance R7, capacitor C7, diode D3With diode D4Form reference circuit 12, resistance R5An end be connected to diode D2Cathode,
Resistance R5Another be terminated at capacitor C7One end, diode D3Anode and voltage reference chip U4 (+) end, capacitor C7
The other end and voltage reference chip U4 (-) end be grounded, diode D3Cathode meet R6One end, R6Another termination voltage
The end ADJ of fiducial chip U4 and R7One end, R7Another terminating diode D4Anode, diode D4Cathode ground connection；Fortune
Calculate amplifier U5, resistance R1, resistance R2, resistance R3With resistance R4Form conditioning circuit 13, the detection output of current detecting chip U1
It is terminated at resistance R1One end, resistance R1It is another be terminated at amplifier U5 negative terminal input and resistance R2One end, resistance R2's
The output of another output end for being terminated at amplifier U5, isolation power conversion circuit 1 is terminated at resistance R4One end, resistance R4It is another
One end is connected to anode input and the resistance R of amplifier U53One end, resistance R3It is another be terminated at benchmark U4 (+) end, amplifier
Output voltage of the output of U5 as load regulation compensation circuit 5, the i.e. output voltage of prime isolation power conversion circuit are adopted
Sample signal.
The compensation principle of load regulation compensation circuit is as follows:
Current detection circuit output voltage VhIt can be expressed asWherein k is current detection accuracy, IoIt is preceding
The output electric current of grade isolation power conversion circuit, if output to the equivalent resistance that each road loads of isolation power conversion circuit is about
Rall, then first via output voltage Vo1It can be expressed as (Vo-RallVh/k+RallVc1/ 2k), and conditioning circuit output voltage Vsense
It can be expressed asThen by the design of circuit parameter, make Vo1And VsenseIn expression formula
Vo、VhAnd VxCoefficient it is equal, then conditioning circuit output voltage VsenseVariable quantity and actual load voltage due to load current become
Variable quantity caused by changing is identical, then is controlled by the output pressure stabilizing that power conversion circuit is isolated in prime, V may be implementedsensePerseverance
It is fixed, that is, realize the constant of each road load voltage.
The above examples only illustrate the technical idea of the present invention, and this does not limit the scope of protection of the present invention, all
According to the technical idea provided by the invention, any changes made on the basis of the technical scheme each falls within the scope of the present invention
Within.
Claims (10)
1. a kind of multiple-channel output isolated DC power supply, characterized by comprising: isolation power conversion circuit (1), multichannel power are opened
Powered-down road (2), multichannel overload protecting circuit (3), dsp controller and communicating circuit (4), load regulation compensation circuit (5)；Institute
Stating multichannel power switch circuit (2) includes multiple power switch circuits, and the multichannel overload protecting circuit (3) includes multiple overloads
Circuit is protected, the multiple power switch circuit and the multiple overload protecting circuit correspond；The isolation power conversion
Input of the output of circuit (1) as load regulation compensation circuit (5), the output all the way of load regulation compensation circuit (5)
Output voltage sampled signal as isolation power conversion circuit (1) is connected to dsp controller and communicating circuit (4), by DSP
Controller processing after obtain driving signal be applied to isolation power conversion circuit (1), load regulation compensation circuit (5) it is another
Road exports the input as multichannel power switch circuit (2), and dsp controller and communicating circuit (4) receive the control of extraneous input
Signal is applied to the independent on-off control that multichannel power switch circuit (2) realize the multiple power switch circuit, function after processing
The current detecting amount of rate switching circuit is separately input to corresponding overload protecting circuit, the overload protection of overload protecting circuit output
Control signal inputs corresponding power switch circuit respectively.
2. multiple-channel output isolated DC power supply as described in claim 1, it is characterised in that the overload protecting circuit includes: defeated
Current detection circuit (6), short-circuit comparison circuit (7), overcurrent delay circuit (8), overcurrent comparison circuit (9) out, multichannel power tube
Current sense resistor pressure drop is input to output current detection circuit (6) in switching circuit (2), output current detection circuit (6)
It is input to short-circuit comparison circuit (7) and overcurrent delay circuit (8), the output of overcurrent delay circuit (8) is input to overcurrent ratio
Compared with circuit (9), the output of overcurrent short circuit comparison circuit (7) and overcurrent comparison circuit (9) is as overload protection control signal input
To corresponding power switch circuit.
3. multiple-channel output isolated DC power supply as claimed in claim 2, it is characterised in that the output current detection circuit
It (6) include operational amplifier A1, resistance Ra, resistance Rb, resistance RcWith resistance Rd, the electric current inspection of multichannel power tube switching circuit (2)
Measuring resistance both ends are connected to resistance R respectivelyaWith resistance RbOne end, resistance RaWith resistance RbIt is another to be terminated at operational amplifier A1 input
End, input of the output of operational amplifier A1 as short-circuit comparison circuit (7) and overcurrent delay circuit (8).
4. multiple-channel output isolated DC power supply as claimed in claim 2 or claim 3, it is characterised in that the overcurrent delay circuit
It (8) include operational amplifier A2, resistance ReWith capacitor Ca, the input of output current detection circuit (6) is connected to resistance ReOne end, electricity
Hinder ReAnother input terminal for being terminated at operational amplifier A2 and capacitor CaOne end, capacitor CaOne end is connected to the defeated of operational amplifier A2
Outlet, the output of operational amplifier A2 are terminated at the input terminal of overcurrent comparison circuit (9).
5. multiple-channel output isolated DC power supply as described in claim 1, it is characterised in that the load regulation compensation circuit
(5) include: current detection circuit (10), non-isolated booster circuit (11), reference circuit (12), conditioning circuit (13), power surely
The output of power conversion circuit (1) is isolated respectively as current detection circuit (10), power supply voltage regulator circuit in volt circuit (14)
(14), the input of non-isolated booster circuit (11) and conditioning circuit (13), the output of power supply voltage regulator circuit (14) are connected in electric current inspection
The feeder ear of slowdown monitoring circuit (10), the output of non-isolated booster circuit (11) are connected in conditioning circuit (13) and reference circuit (12)
The output of feeder ear, reference circuit (12) inputs conditioning circuit (13)；The output all the way of current detection circuit (10) inputs conditioning
Circuit (13), input of the another output as multichannel power switch circuit (2)；The output of conditioning circuit (13) is as isolation function
The output voltage sampled signal of rate translation circuit (1).
6. multiple-channel output isolated DC power supply as claimed in claim 5, it is characterised in that current detection circuit (10) packet
Include current detecting chip U1, capacitor C3With capacitor C4, isolation power conversion circuit (1), which exports, is connected in current detecting chip U1 electric current
Input terminal, the output of current detecting chip U1 electric current are connected to multichannel power switch circuit (2), and power supply voltage regulator circuit (14) output is connected in
Capacitor C3One end and current detecting chip U1 feeder ear Vcc, capacitor C3Other end ground connection, current detecting chip U1 filter end warp
Capacitor C4The detection output of ground connection, current detecting chip U1 is inputted as conditioning circuit (13).
7. multiple-channel output isolated DC power supply as claimed in claim 5, it is characterised in that the non-isolated booster circuit (11)
Including non-isolated boost chip U3, capacitor C5, capacitor C6, resistance R8, resistance R9, resistance R10, inductance L1With diode D2, function is isolated
The output of rate translation circuit (1) is connected in non-isolated boost chip U3 input terminal and inductance L1One end, inductance L1Other end connection is non-
The end SW of isolation boosting chip U3 and diode D2Anode, capacitor C5One end is connected in the end SS of U3, capacitor C5Other end ground connection,
Resistance R8One end is connected in the end COMP of non-isolated boost chip U3, resistance R8Another termination capacitor C6One end, capacitor C6Another termination
Ground, resistance R9One end is connected in the end FB and the resistance R of non-isolated boost chip U310One end, resistance R9Other end ground connection, resistance R10
Another terminating diode D2Cathode, diode D2Cathode is connected to the positive feeder ear and reference circuit (12) of conditioning circuit (14)
Feeder ear.
8. multiple-channel output isolated DC power supply as claimed in claim 5, it is characterised in that the conditioning circuit (13) includes fortune
Calculate amplifier U5, resistance R1, resistance R2, resistance R3With resistance R4, the detection output of current detection circuit (10) is connected to resistance R1
One end, resistance R1Another negative terminal input for being terminated at amplifier U5 and resistance R2One end, resistance R2It is another to be terminated at the defeated of amplifier U5
The output of outlet, isolation power conversion circuit (1) is terminated at resistance R4One end, resistance R4Another anode for being terminated at amplifier U5 is defeated
Enter and resistance R3One end, resistance R3Another output end for being terminated at reference circuit (12), the output of amplifier U5 is as adjustment of load
The output of rate compensation circuit (5).
9. a kind of multichannel overload protecting circuit is applied to multiple-channel output isolated DC power supply, the multiple-channel output isolated DC electricity
Source includes the power switch circuit of multiple independent on-off controls, it is characterised in that multichannel overload protecting circuit includes that multiple overloads are protected
Protection circuit, overload protecting circuit and power switch circuit correspond；The overload protecting circuit includes: output electric current measure electricity
Road (6), short-circuit comparison circuit (7), overcurrent delay circuit (8), overcurrent comparison circuit (9), in multichannel power tube switching circuit (2)
Current sense resistor pressure drop is input to output current detection circuit (6), and the output of output current detection circuit (6) is input to short circuit
Comparison circuit (7) and overcurrent delay circuit (8), the output of overcurrent delay circuit (8) are input to overcurrent comparison circuit (9), overcurrent
Short-circuit comparison circuit (7) is input to corresponding power as overload protection control signal with the output of overcurrent comparison circuit (9) and opens
Powered-down road.
10. a kind of load regulation compensation circuit is applied to multiple-channel output isolated DC power supply, characterized by comprising: electric current
Detection circuit (10), non-isolated booster circuit (11), reference circuit (12), conditioning circuit (13), power supply voltage regulator circuit (14), directly
Galvanic electricity source isolation power conversion circuit output respectively as current detection circuit (10), power supply voltage regulator circuit (14), it is non-every
The output of input from booster circuit (11) and conditioning circuit (13), power supply voltage regulator circuit (14) is connected in current detection circuit (10)
Feeder ear, the output of non-isolated booster circuit (11) is connected in conditioning circuit (13) and reference circuit (12) feeder ears, base
The output of quasi- circuit (12) inputs conditioning circuit (13)；The output all the way of current detection circuit (10) inputs conditioning circuit (13),
Input of the another output as multichannel power switch circuit (2)；The output of conditioning circuit (13) is as isolation power conversion electricity
The output voltage sampled signal on road.
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| CN201910261288.0A CN109951083B (en) | 2019-04-02 | 2019-04-02 | Multi-output isolation direct-current power supply and overload protection and load regulation compensation circuit |
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| CN112383028A (en) * | 2020-12-07 | 2021-02-19 | 安徽江淮汽车集团股份有限公司 | Multi-path power supply circuit, device and automatic driving vehicle |
| CN112436480A (en) * | 2021-01-27 | 2021-03-02 | 江西云本数字科技有限公司 | Door electric switch protection system |
| CN113035123A (en) * | 2021-02-02 | 2021-06-25 | 深圳精智达技术股份有限公司 | Multi-path homologous independent compensation driving power supply device |
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Cited By (3)
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| CN112383028A (en) * | 2020-12-07 | 2021-02-19 | 安徽江淮汽车集团股份有限公司 | Multi-path power supply circuit, device and automatic driving vehicle |
| CN112436480A (en) * | 2021-01-27 | 2021-03-02 | 江西云本数字科技有限公司 | Door electric switch protection system |
| CN113035123A (en) * | 2021-02-02 | 2021-06-25 | 深圳精智达技术股份有限公司 | Multi-path homologous independent compensation driving power supply device |
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| CN109951083B (en) | 2021-06-22 |
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