CN109756123A - A kind of multiple-channel output AC-battery power source module - Google Patents
A kind of multiple-channel output AC-battery power source module Download PDFInfo
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- CN109756123A CN109756123A CN201910231447.2A CN201910231447A CN109756123A CN 109756123 A CN109756123 A CN 109756123A CN 201910231447 A CN201910231447 A CN 201910231447A CN 109756123 A CN109756123 A CN 109756123A
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Abstract
This disclosure relates to a kind of multiple-channel output AC-battery power source module, first voltage is depressured as second voltage by switch power module, purpose is the characteristic of switch power module high conversion efficiency to be utilized, it is lost so that reducing during being depressured first voltage for second voltage, to improve the efficiency of power module, secondly, second voltage after decompression is less than first voltage, in secondary decompression, it is depressured second voltage as the input voltage of linear voltage decreasing module again, reduce the difference between linear voltage decreasing module input voltage and output voltage, to reduce the loss of linear voltage decreasing module, further improve the efficiency of power module, simultaneously because the low ripple characteristic of linear voltage decreasing module, so that the output of power module also has the characteristic of low ripple.
Description
Technical field
This disclosure relates to power technique fields, and in particular, to a kind of multiple-channel output AC-battery power source module.
Background technique
In the prior art, the power module of radio station power supply requires the advantages that high-efficient, ripple is low, small in size, still
The high conversion efficiency that existing power module has, but ripple is larger；Some power module ripples also are small, but efficiency
Low, calorific value is larger, and volume is larger, cannot take into account the characteristic of high efficiency and low ripple, therefore existing power module cannot
Meets the needs of radio station power supply well.
Summary of the invention
To solve the above problems, purpose of this disclosure is to provide a kind of multiple-channel output AC-battery power source modules.
To achieve the goals above, the disclosure provides a kind of hybrid switch power module, comprising: switch power module and line
Property voltage reduction module, the switch power module includes multiple-channel output, the linear voltage decreasing module and the switch power module
The connection of one or more output end, the switch power module is for being depressured first voltage for second voltage, the linear drop
Die block is used to for the second voltage be depressured as tertiary voltage, and the first voltage is electric for the input of the switch power module
Pressure.
Optionally, the switch power module includes controller, feedback control loop, controllable switch, transformer, the transformer
Including armature winding, the first secondary windings and second subprime winding, the second subprime winding be it is multiple, the armature winding with
The controllable switch connection, the controller are connect with the controllable switch and the feedback control loop, the feedback control loop and institute
The output end connection for stating the first secondary windings, for obtaining the current output voltage of first secondary windings, the controller
Control signal is generated according to the difference of the current output voltage and the second voltage, for controlling leading for the controllable switch
Logical duration, makes the current output voltage second voltage；
The controller passes through institute when the current output voltage for controlling first secondary windings is the second voltage
It states second subprime winding and the first voltage is reduced to corresponding second voltage.
Optionally, the controllable switch includes NMOS tube M1, the Same Name of Ends of the armature winding, different name end respectively with it is described
The input anode of switch power module is connected with the drain electrode of the NMOS tube M1, the source electrode of the NMOS tube M1, grid respectively with
The input negative terminal of the switch power module is connected with the controller；
The feedback control loop includes first resistor R1, second resistance R2, reference voltage source U2 and photoisolator U1, described
The first resistor R1 and second resistance R2 is connected in series, and the first resistor R1 is connecting the output of the switch power module just
End, the second resistance R2 connect the output negative terminal of the switch power module, the reference end of the reference voltage source U2 and institute
State second resistance R2 connection, the anode of the reference voltage source U2, cathode respectively with the output negative terminal of the switch power module
It is connected with the cathode of the photoisolator U1, the output of the anode and the switch power module of the photoisolator U1 is just
End connection, the collector of the photoisolator U1, emitter are defeated with the controller and the switch power module respectively
Negative terminal connects out.
Optionally, the controller includes LM5022 chip, and the transformer includes auxiliary winding, the auxiliary winding with
The end VCC of the LM5022 chip connects, and the end VCC is connected in parallel to several capacitors.
Optionally, the linear voltage decreasing module includes filter circuit and linear voltage decreasing device, and the filter circuit is in parallel respectively
In the input terminal and output end of the linear voltage decreasing device.
Optionally, the linear voltage decreasing device includes fixed output buck device or the adjustable reducing transformer of output.
Optionally, the linear voltage decreasing device includes TPS76701 linear voltage decreasing device, MIC5233 linear voltage decreasing device.
Through the above technical solutions, including: switch power module and linear voltage decreasing module, the switch power module includes
Multiple-channel output, the linear voltage decreasing module are connect with one or more output end of the switch power module, the switch electricity
Source module is used to for first voltage be depressured as second voltage, and it is that the linear voltage decreasing module, which is used to for the second voltage being depressured,
Three voltages, the first voltage are the input voltage of the switch power module.
First voltage is depressured as second voltage by switch power module, it is therefore an objective to the conversion of Yao Liyong switch power module
High-efficient characteristic, so that being depressured by first voltage to reduce during second voltage and being lost, to improve power module
Efficiency, secondly, decompression after second voltage be less than first voltage, in secondary decompression, using second voltage as linear voltage decreasing
The input voltage of module is depressured again, reduces the difference between linear voltage decreasing module input voltage and output voltage, with
Reduce the loss of linear voltage decreasing module, the efficiency of power module is further improved, simultaneously because linear voltage decreasing module is low
Ripple characteristics, so that the output of power module also has the characteristic of low ripple.
Other feature and advantage of the disclosure will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is and to constitute part of specification for providing further understanding of the disclosure, with following tool
Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:
Fig. 1 is a kind of block diagram of multiple-channel output AC-battery power source module shown according to an exemplary embodiment；
Fig. 2 is the block diagram of switch power module described in the disclosure shown according to an exemplary embodiment；
Fig. 3 is a kind of circuit diagram of multiple-channel output AC-battery power source module shown according to an exemplary embodiment.
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to the disclosure.It should be understood that this place is retouched
The specific embodiment stated is only used for describing and explaining the disclosure, is not limited to the disclosure.
To solve the problems, such as that the transfer efficiency of the power module of radio station power supply and ripple cannot be taken into account in the prior art, this public affairs
It opens and a kind of multiple-channel output AC-battery power source module is provided, first voltage is depressured as second voltage, purpose by switch power module
It is the characteristic of switch power module high conversion efficiency to be utilized, so that being depressured first voltage to subtract during second voltage
Small loss, to improve the efficiency of power module, secondly, the second voltage after decompression is less than first voltage, in secondary decompression,
Be depressured second voltage as the input voltage of linear voltage decreasing module again, reduce linear voltage decreasing module input voltage and
Difference between output voltage further improves the efficiency of power module, simultaneously to reduce the loss of linear voltage decreasing module
Due to the low ripple characteristic of linear voltage decreasing module, so that the output of power module also has the characteristic of low ripple.
Content of this disclosure is described in detail below by specific embodiment.
Fig. 1 is a kind of block diagram of multiple-channel output AC-battery power source module shown according to an exemplary embodiment, such as Fig. 1 institute
Show, which includes: switch power module and linear voltage decreasing module, which includes multiple-channel output, the line
Property voltage reduction module and the switch power module all the way or multi-channel output is connect, which is used for the first electricity
Pressure drop pressure is second voltage, which is used to for the second voltage be depressured as tertiary voltage, and the first voltage is is somebody's turn to do
The input voltage of switch power module.
In this embodiment, first voltage is depressured as second voltage by switch power module, it is therefore an objective to utilize switch
The characteristic of power module high conversion efficiency is lost so that reducing during being depressured first voltage for second voltage, to
The efficiency of power module is improved, secondly, the second voltage after decompression is less than first voltage, in secondary decompression, by second voltage
Input voltage as linear voltage decreasing module is depressured again, reduce linear voltage decreasing module input voltage and output voltage it
Between difference further improve the efficiency of power module to reduce the loss of linear voltage decreasing module, simultaneously because linear drop
The low ripple characteristic of die block, so that the output of power module also has the characteristic of low ripple.
Linear voltage decreasing module can be connect with the multi-channel output of switch power module, and the multichannel to realize power module is defeated
Function out, to meet the needs of radio station is to power module multiple-channel output.
As shown in Fig. 2, the switch power module may include controller, feedback control loop, controllable switch, transformer, the transformation
Device includes armature winding, the first secondary windings and second subprime winding, the second subprime winding be it is multiple, the armature winding with should
Controllable switch connection, the controller are connect with the controllable switch and the feedback control loop, the feedback control loop and first secondary windings
Output end connection, for obtaining the current output voltage of first secondary windings, the controller is according to the current output voltage
Generating control signal with the difference of the second voltage makes the current output voltage for controlling the conducting duration of the controllable switch
For the second voltage.
Due to the directly proportional relationship of the number of turns and voltage of the first secondary windings and second subprime winding, in controller
When the current output voltage for controlling first secondary windings is the second voltage, by the second subprime winding by the first voltage
Decompression is corresponding second voltage.
With continued reference to Fig. 2, which may include NMOS tube M1, the Same Name of Ends of the armature winding, different name end respectively with
The input anode of the switch power module is connected with the drain electrode of NMOS tube M1, the source electrode of NMOS tube M1, grid respectively with this
The input negative terminal of switch power module is connected with the controller；The feedback control loop includes first resistor R1, second resistance R2, benchmark
Voltage source U2 and photoisolator U1, first resistor R1 and second resistance R2 are connected in series, and first resistor R1 connection should
The output plus terminal of switch power module, second resistance R2 connect the output negative terminal of the switch power module, the reference voltage source
The reference end of U2 is connect with second resistance R2, the anode of reference voltage source U2, cathode respectively with the switch power module
Output negative terminal is connected with the cathode of photoisolator U1, the output of the anode and the switch power module of photoisolator U1
Anode connection, collector, the emitter of photoisolator U1 are negative with the output of the controller and the switch power module respectively
End connection.
In Fig. 2, the grid of NMOS tube M1 is expressed as G, and source electrode is expressed as S, and drain electrode is expressed as D, Same Name of Ends and different name end
For the opposite connecting pin of transformer, for two connecting pins convenient for differentiating transformer, Fig. 2 acceptance of the bid shows the of the same name of transformer
End, correspondingly, the other end of same winding is the different name end of transformer.
Reference voltage source U2 is used to obtain the end voltage of second resistance R2, and the end voltage and benchmark of second resistance R2 is electric
The reference voltage of the reference end of potential source U2 is compared, and obtains voltage difference, which is fed back to control by photoisolator U1
Device, controller determine the difference of second voltage and current output voltage according to the voltage difference, to determine the control signal of output.
Optionally, referring to Fig. 2, which includes filter circuit and linear voltage decreasing device, filter circuit difference
It is connected in parallel on the input terminal and output end of the linear voltage decreasing device, is respectively used to filter out the input terminal of linear voltage decreasing module and output end
Noise.
The input terminal of switch power module also can connect input filter circuit, filter out power supply by input filter circuit
The noise jamming of input, input filter circuit may include the filter elements such as common mode inductance, filter and differential mode inductance, the input
The output end of filter circuit can be connected with linear voltage decreasing module, be depressured by linear voltage decreasing module to first voltage, and defeated
Out.
In conclusion the linear voltage decreasing module can with switch power module all the way or multi-channel output is connect, can also
To be connected directly between the input terminal of switch power module, to meet the needs of equipment is to different input powers.Illustratively, such as Fig. 3
Shown, which may include the output of 5 tunnels, and the input voltage of AC-battery power source module can be 9~18V, wherein 1 tunnel
Output is connected to the input terminal of switch power module by linear voltage decreasing module, which may include MIC5233 line
Property reducing transformer, resistance R5 and resistance R6 are regulating resistors, can realize the output of 4V by adjusting resistance R5 and resistance R6.2 roads are defeated
It is connected to the output end of the first secondary windings out, the output of 3 tunnels, the output of 4 tunnels and the output of 5 tunnels are separately connected by linear voltage decreasing module
In the output end of second subprime winding.
Wherein, 2 tunnels output can not access linear voltage reduction module, and main function is the adjustment effect by feedback control loop,
Make current output voltage stablize in tertiary voltage, while make 3 tunnels output, 4 tunnels output and 5 tunnels output in second subprime winding it is defeated
Voltage stabilization is in corresponding tertiary voltage out.In the output of 2 tunnels, the tertiary voltage of output may include 8V, switch power module
Controller may include LM5022 chip, which includes auxiliary winding, and the end VCC of the auxiliary winding and the LM5022 chip connects
It connects, which is connected in parallel to several capacitors, capacitor C29, capacitor C31 and capacitor C33, auxiliary winding and capacitor C29, capacitor
The combinational circuit of C31 and capacitor C33 can be realized to the end VCC of LM5022 chip and provides stable supply voltage.
LM5022 chip has a function ends such as the end overcurrent protection CS, the end under-voltage protection UVLO, the end soft start SS, therefore can be with
Corresponding peripheral circuit is set by above functions end, realize the overcurrent protection of switch power module, under-voltage protection and soft is opened
Functions, the design disclosure of each functional circuit such as dynamic are not described further this.
In the output of 3 tunnels, linear voltage decreasing module is using MIC5233 linear voltage decreasing device, MIC5233 linear voltage decreasing device
Adjustable reducing transformer is exported, by setting regulating resistor R8 and R9, it can be achieved that the output of -8V.
In the output of 4 tunnels and the output of 5 tunnels, linear voltage decreasing module is using TPS76701 linear voltage decreasing device, TPS76701
Linear voltage decreasing device is the adjustable reducing transformer of output, in the output of 4 tunnels, by adjusting regulating resistor R3 and R50, it can be achieved that 5V's is defeated
Out.In the output of 5 tunnels, the output of 3.3V can be realized by adjusting regulating resistor R31 and R51.
The AC-battery power source module can also include control switch, can control AC-battery power source by control switch and be in normal
Working condition stops working.The circuit diagram of control switch is as shown in figure 3, using triode Q1 as switch element, triode Q1
Emitter ground connection, collector connect LM5022 chip under-voltage protection side UVLO.The end ON/OFF is trigger button, external signal
It is inputted from the end ON/OFF, such as when triggering the end ON/OFF to make input is high level, triode Q1 conducting, under-voltage protection side UVLO
Ground connection, LM5022 chip is without output, then AC-battery power source module from service；When input is low level, triode Q1 is not turned on,
LM5022 chip works normally, then AC-battery power source module is normal operating conditions.
The preferred embodiment of the disclosure is described in detail in conjunction with attached drawing above, still, the disclosure is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure
Monotropic type, these simple variants belong to the protection scope of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the disclosure to it is various can
No further explanation will be given for the combination of energy.
In addition, any combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally
Disclosed thought equally should be considered as disclosure disclosure of that.
Claims (7)
1. a kind of multiple-channel output AC-battery power source module characterized by comprising switch power module and linear voltage decreasing module, institute
Stating switch power module includes multiple-channel output, one or more output of the linear voltage decreasing module and the switch power module
End connection, the switch power module are used to for first voltage be depressured as second voltage, and the linear voltage decreasing module is for by institute
Stating second voltage decompression is tertiary voltage, and the first voltage is the input voltage of the switch power module.
2. multiple-channel output AC-battery power source module according to claim 1, which is characterized in that the switch power module includes
Controller, feedback control loop, controllable switch, transformer, the transformer include armature winding, the first secondary windings and second subprime
Winding, the second subprime winding be it is multiple, the armature winding is connect with the controllable switch, the controller with it is described can
Control switch is connected with the feedback control loop, and the feedback control loop is connect with the output end of first secondary windings, for obtaining
The current output voltage of first secondary windings, the controller is according to the current output voltage and the second voltage
Difference, which generates control signal, makes the current output voltage described second for controlling the conducting duration of the controllable switch
Voltage；
The controller passes through described the when the current output voltage for controlling first secondary windings is the second voltage
The first voltage is reduced to corresponding second voltage by secondary stage winding.
3. multiple-channel output AC-battery power source module according to claim 2, which is characterized in that the controllable switch includes NMOS
Pipe M1, the Same Name of Ends of the armature winding, different name end respectively with the input anode of the switch power module and the NMOS tube
The drain electrode of M1 connects, the source electrode of the NMOS tube M1, grid respectively with the input negative terminal of the switch power module and the control
Device connection processed；
The feedback control loop includes first resistor R1, second resistance R2, reference voltage source U2 and photoisolator U1, and described first
The resistance R1 and second resistance R2 is connected in series, and the first resistor R1 connects the output plus terminal of the switch power module,
The second resistance R2 connects the output negative terminal of the switch power module, the reference end of the reference voltage source U2 and described the
Two resistance R2 connections, the anode of the reference voltage source U2, cathode respectively with the output negative terminal of the switch power module and institute
The cathode connection of photoisolator U1 is stated, the anode of the photoisolator U1 and the output plus terminal of the switch power module connect
It connects, collector, the emitter of the photoisolator U1 is negative with the output of the controller and the switch power module respectively
End connection.
4. multiple-channel output AC-battery power source module according to claim 3, which is characterized in that the controller includes LM5022
Chip, the transformer include auxiliary winding, and the auxiliary winding is connect with the end VCC of the LM5022 chip, the end VCC
It is connected in parallel to several capacitors.
5. multiple-channel output AC-battery power source module according to claim 1, which is characterized in that the linear voltage decreasing module includes
Filter circuit and linear voltage decreasing device, the filter circuit are connected in parallel on the input terminal and output end of the linear voltage decreasing device respectively.
6. multiple-channel output AC-battery power source module according to claim 5, which is characterized in that the linear voltage decreasing device includes solid
Determine output buck device or the adjustable reducing transformer of output.
7. multiple-channel output AC-battery power source module according to claim 6, which is characterized in that the linear voltage decreasing device includes
TPS76701 linear voltage decreasing device, MIC5233 linear voltage decreasing device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910231447.2A CN109756123A (en) | 2019-03-26 | 2019-03-26 | A kind of multiple-channel output AC-battery power source module |
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| CN201910231447.2A CN109756123A (en) | 2019-03-26 | 2019-03-26 | A kind of multiple-channel output AC-battery power source module |
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| CN113315392A (en) * | 2021-05-13 | 2021-08-27 | 苏州美恩斯电子科技有限公司 | Chopping voltage reduction method and device for linear power supply |
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