CN207321129U - A kind of low BLDC motor power circuits of small stand-by power consumption - Google Patents
A kind of low BLDC motor power circuits of small stand-by power consumption Download PDFInfo
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- CN207321129U CN207321129U CN201721376962.2U CN201721376962U CN207321129U CN 207321129 U CN207321129 U CN 207321129U CN 201721376962 U CN201721376962 U CN 201721376962U CN 207321129 U CN207321129 U CN 207321129U
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Abstract
The utility model provides a kind of small stand-by power consumption low BLDC motor power circuits, including BLDC motor switch power module and+15VDC electronic switch modules；Wherein：The BLDC motor switch power module includes voltage stabilizing output module, power management module, transformer T1, diode D3 and capacitance EC2；+ 15VDC the electronic switch modules include triode Q9, resistance R43, resistance R41, resistance R37 and optocoupler OP4.The low BLDC motor power circuits of small stand-by power consumption provided by the utility model, one group of winding is saved by+15VDC power supplys and one group of winding of power management module IC power sharings；The size of transformer is reduced, has saved cost and resource；By+15VDC electronic switch modules, making BLDC motors ,+15VDC power supplys can turn off, and save the stand-by power consumption of+15VDC power supplys when standby.
Description
Technical field
It the utility model is related to BLDC power circuit design fields, the low BLDC of more particularly to a kind of small stand-by power consumption
Motor power circuit.
Background technology
BLDC motor interfaces include 5 ports：+ 310VDC ends, PGND ends ,+15VDC ends, VSP ends, FG ends；
PGND ends are as public power, it is desirable to which this 5 lines will be using PGND as publicly；
+ 310VDC ends：The major impetus supply power supply of BLDC motors；
+ 15VDC ends：BLDC motor internals control IC supply power supplys；General stand-by power consumption 0.4W or so；
VSP ends：The speed electric of BLDC motors is supplied to by application control circuit；
FG ends：The rotational speed pulse signal of BLDC motors output, supply control circuit are made rotating speed detecting and are used.
It is typically all using Switching Power Supply at present on the premise of requiring application control circuit to use security isolation power supply
Mode；It is to export rectified filtering by the independent one group of secondary windings of switch transformer to provide later that+15VDC is generally mostly, its is defeated
Still the ground of primary+310VDC is still connected to the power supply gone out, could meet requirement altogether；Because+15VDC requirements
Number of winding turns is more, on the one hand, occupies the winding space of switch transformer skeleton, increases product space demand；On the other hand,
Increase in transformer framework size, add pcb board size, make that the production cost increases, while also result in the resource of pcb board
Waste.In addition, higher and higher feelings are required to the stand-by power consumption of product to the social problem of energy-saving and emission-reduction for the world today
Under shape, in 0.4W or so, opposite is bigger, how to reduce BLDC motor+15VDC power supplys for the stand-by power consumptions of+15VDC power supplys
Stand-by power consumption will be particularly important.
Utility model content
To solve the problems, such as to mention in above-mentioned background technology, it is low that the utility model provides a kind of small stand-by power consumption
BLDC motor power circuits, including BLDC motor switch power module and+15VDC electronic switch modules；Wherein：
The BLDC motor switch power module includes voltage stabilizing output module, power management module, transformer T1, diode
D3 and capacitance EC2；Described voltage stabilizing output module one end connects alternating current, and the other end is connected to 4 ends and 2 ends of the transformer T1；
1 end of the transformer T1 is connected with diode D3 anodes；The diode D3 cathodes are connected with capacitance EC2 one end；The electricity
Hold the EC2 other ends and 3 ends of transformer T1 are grounded；The diode D3 cathodes also export mould with power management module and voltage stabilizing
Block connects；The power management module is connected with voltage stabilizing output module；
+ 15VDC the electronic switch modules include triode Q9, resistance R43, resistance R41, resistance R37 and optocoupler OP4；
Described triode Q9 emitters and resistance R43 one end is connected with diode D3 cathodes；The triode Q9 base stages and resistance R43
The other end is connected with resistance R41 one end；+ 15VDC the ends of the triode Q9 collectors and interface module connect；The resistance
The R41 other ends and optocoupler OP4 collectors；Connected between the optocoupler OP4 anodes and the first power supply by resistance R37；The light
Coupling OP4 cathodes are connected with MCU；The optocoupler OP4 emitters ground connection.
Further, the voltage stabilizing output module includes fuse F1, varistor VAR1, thermistor NTC1, rectification
Bridge DB1, common mode inductance L2, diode D2, capacitance X1, capacitance X2, capacitance C2, capacitance C3, capacitance C15, capacitance EC1, resistance R3,
Resistance R4, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11 and resistance R12；
The firewire of described fuse F1 one end and alternating current connects；The fuse F1 other ends, varistor VAR1 one end,
Capacitance X1 one end, resistance R3 one end are connected with 1 end of common mode inductance L2；3 ends of the common mode inductance L2, resistance R4 one end,
The capacitance X1 other ends, the varistor VAR1 other ends are connected with the zero curve of alternating current；The resistance R3 other ends and resistance R4 are another
One end connects；
2 ends of the common mode inductance L2 with 4 ends of common mode inductance L2 are connected to rectifier bridge DB1 two exchange input
End；Capacitance X2 is connected between two ac input ends of rectifier bridge DB1；The anode and thermistor of the rectifier bridge DB1
NTC1 one end connects；The thermistor NTC1 other ends, capacitance EC1 one end, resistance R7 one end, resistance R9 one end, resistance R11
One end, capacitance C2 one end, capacitance C3 one end are connected with 4 ends of transformer T1；The resistance R7 other ends and resistance R8 one end
Connection；The resistance R9 other ends are connected with resistance R10 one end；The rectifier bridge DB1 cathodes, the capacitance EC1 other ends, resistance R8 are another
End is grounded；The capacitance C2 other ends are connected with resistance R12 one end；The resistance R11 other ends, the resistance R12 other ends are equal
It is connected with diode D2 cathodes；The resistance R10 other ends, diode D2 anodes, transformer T1 2 ends with power management mould
Block connects；The capacitance C3 other ends are connected with capacitance C15 one end；The capacitance C15 other ends ground connection.
Further, the power management module includes power supply chip IC2, resistance R5, resistance R6, resistance RJ1, resistance
RJ2 and capacitance C1；
1 pin of the power supply chip IC2 is connected with capacitance C1 one end；2 pins of the power supply chip IC2 and resistance R6
One end connects；3 pins of the power supply chip IC2 are connected with resistance R5 one end；4 pins of power supply chip IC2 and resistance RJ1 mono-
End is connected with resistance RJ2 one end；5 pins of the power supply chip IC2 and 6 pins of power supply chip IC2 with transformer T1 2
End connection；7 pins of the power supply chip IC2 and 8 pins of power supply chip IC2 are connected with 3 ends of transformer T1；The electricity
The resistance R5 other ends, the resistance R6 other ends are connected with diode D3 cathodes；The capacitance C1 other ends, the resistance RJ1 other ends and
The resistance RJ2 other ends are grounded.
Further, the BLDC motor switch power module includes secondary output module；The secondary output module bag
Include diode D4, resistance R13, capacitance C4, capacitance EC3, capacitance EC4 and inductance L4；The diode D4 anodes and resistance R13 mono-
End is connected with 8 ends of transformer T1；The resistance R13 other ends are connected with capacitance C4 one end；The capacitance C4 other ends, electricity
Hold EC3 one end, inductance L4 one end is connected with diode D4 cathodes；The inductance L4 other ends are connected with capacitance EC4 one end；Institute
5 ends for stating the capacitance EC4 other ends, the capacitance EC3 other ends and transformer T1 are grounded.
Further, the BLDC motor switch power module includes feedback module；The feedback module includes resistance
R14, resistance R15, resistance R16, resistance RJ3, resistance RJ6, resistance RJ7, capacitance C5, integrated chip IC3, optocoupler OP1；
Described resistance R15 one end is connected with diode D4 cathodes；The resistance R15 other ends and optocoupler OP1 anodes, resistance
R14 one end connects；The resistance R14 other ends, capacitance C5 one end, integrated chip IC3 cathodes are connected with optocoupler OP1 cathodes；
The capacitance C5 other ends are connected with resistance R16 one end；The optocoupler OP1 collectors are connected with 1 pin of power supply chip IC2；
The optocoupler OP1 emitters ground connection；The R ends of the integrated chip IC3, resistance RJ6 one end, resistance RJ7 one end, resistance R16 are another
One end is connected with resistance RJ3 one end；The tie point of the inductance L4 and capacitance EC4 are connected with the resistance RJ3 other ends；The collection
It is grounded into 3 anode of chip IC, the resistance RJ6 other ends, the resistance RJ7 other ends.
Further, the model EF20-2.2mH of the transformer T1.
Further, the model OB2338-DIP8 of the power supply chip IC2.
Further, the model F7/SOD123-FL of the diode D3；Capacitance EC2 is polar capacitor.
Further, the model EL817C of the optocoupler OP4；The model S8050 of the triode Q9.
The low BLDC motor power circuits of small stand-by power consumption provided by the utility model, pass through+15VDC power supplys and electricity
Source control module I C power shares one group of winding to save one group of winding；The size of transformer is reduced, so as to reduce pcb board
Size, has saved cost and resource；By+15VDC electronic switch modules, the mesh that isolation control+15VDC power supplys export is realized
, so that when BLDC motors are standby ,+15VDC power supplys can be turned off, so as to save the power consumption of 0.4W；The utility model carries
It is small compared to existing power circuit for the low BLDC motor power circuits of small stand-by power consumption, occupy little space；
Also, more energy conservation and environmental protection.
Brief description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, drawings in the following description are
Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is the low BLDC motor power circuit schematic diagrames of small stand-by power consumption provided by the utility model；
Fig. 2 is the circuit diagram of the low BLDC motor power circuits of small stand-by power consumption；
Fig. 3 is interface module schematic diagram.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, those of ordinary skill in the art's all other embodiments obtained without creative efforts, belongs to
The scope of the utility model protection.
, it is necessary to explanation in the description of the utility model, term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than instruction
Or imply that signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For the limitation to the utility model." connection " the either similar word such as " connected " and non-limiting connection with physics or machinery,
But electrical connection, light connects etc. can be included, it is either directly or indirect.
As shown in Figure 1, the utility model embodiment provides a kind of small stand-by power consumption low BLDC motor power circuits,
Including BLDC motor switch power module and+15VDC electronic switch modules；
When it is implemented, BLDC motor switch power module includes voltage stabilizing output module, power management module, transformer
T1, diode D3 and capacitance EC2；Capacitance EC2 is polar capacitor；Voltage stabilizing output module one end connects alternating current, and the other end is connected to
4 ends and 2 ends of transformer T1 primary coils；Transformer T1 uses EF20-2.2mH type transformers；4 ends of transformer T1 and interface
+ 310VDC ends the connection (as shown in Figure 3) of module；1 end of transformer T1 is connected with diode D3 anodes；Diode D3 cathodes with
Capacitance EC2 positive terminals connect；Capacitance EC2 negative pole ends and 3 ends of transformer T1 are grounded；Diode D3 cathodes also with power management
Module is connected with voltage stabilizing output module；Power management module is connected with voltage stabilizing output module；Due to the work of transformer T1 maximums
Voltage need to be less than 20VDC, the upper voltage limit according to input power at the same time under the conditions of 1.2 times of complete machine maximum load current, this
The number of turn for the transformer T1 that utility model provides is 22 circles, the maximum output voltage of transformer T1 is controlled in 16.5VDC；And
Diode D3 and capacitance EC2 composition+15VDC power supplys and the public power supply circuit of power management module, make+15VDC power supplys and electricity
Source control module I C power shares one group of winding, and the output loading capability of this winding is much larger than power supply chip IC2's for 100mA
Operating current 1.6mA, and the operating current of+15VDC power supplys of BLDC motors<40mA, it is achieved thereby that sharing winding.This reality
With the circuit of new offer one group of winding is saved compared to traditional BLDC motor power circuits；So as to reduce transformer
Size, so as to reduce pcb board size, has saved cost and resource.
In addition ,+15VDC electronic switch modules include triode Q9, resistance R43, resistance R41, resistance R37 and optocoupler OP4；
Triode Q9 emitters and resistance R43 one end are connected with diode D3 cathodes；Triode Q9 base stages and the resistance R43 other ends are equal
It is connected with resistance R41 one end；The connection (as shown in Figure 3) of+15VDC ends of triode Q9 collectors and interface module；Resistance R41 is another
One end and optocoupler OP4 collectors；Connected between optocoupler OP4 anodes and the first power supply that voltage is+5V by resistance R37；Optocoupler
The exterior control MCU connections of OP4 cathodes and motor；Optocoupler OP4 emitters are grounded；When starting motor work, control signal CTL-
15VDC is low level, the controlled output low levels of optocoupler OP4, and PNP type triode Q9 conductings, BLDC motors obtain+15VDC power supplys；
When motor is standby, control signal CTL-15VDC is high level, and optocoupler OP4 is controlled to close output, and triode Q9 ends, then+
15VDC power supplys disconnect；The purpose of isolation control+15VDC power supplys output is realized by optocoupler OP4 and triode Q9.
By sealing in+15VDC electronic switch modules in BLDC motor switch power modules, when standby, by close+
The mode of 15VDC electronic switch modules disconnects the connection with BLDC motors, so that BLDC motors+15VDC electricity when saving standby
The power consumption for the 0.4W that source is brought.
The low BLDC motor power circuits of small stand-by power consumption that the utility model embodiment provides, pass through+15VDC electricity
One group of winding is saved with one group of winding of power management module IC power sharings in source；The size of transformer is reduced, so as to reduce
Pcb board size, has saved cost and resource；By+15VDC electronic switch modules, isolation control+15VDC power supplys are realized
The purpose of output, so that when BLDC motors are standby, can turn off+15VDC power supplys, so as to save the power consumption of 0.4W；This reality
There is provided small stand-by power consumption low BLDC motor power circuits with new embodiment, compared to existing power circuit, volume
It is small, occupy little space；Also, more energy conservation and environmental protection.
Preferably, the voltage stabilizing output module includes fuse F1, varistor VAR1, thermistor NTC1, rectifier bridge
DB1, common mode inductance L2, diode D2, capacitance X1, capacitance X2, capacitance C2, capacitance C3, capacitance C15, capacitance EC1, resistance R3, electricity
Hinder R4, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11 and resistance R12；
Specifically, as shown in Fig. 2, the firewire of described fuse F1 one end and alternating current connects；The fuse F1 other ends,
Varistor VAR1 one end, capacitance X1 one end, resistance R3 one end are connected with 1 end of common mode inductance L2；The common mode inductance L2
3 ends, resistance R4 one end, the capacitance X1 other ends, the varistor VAR1 other ends be connected with the zero curve of alternating current；The resistance R3
The other end is connected with the resistance R4 other ends；Capacitance EC1 is polar capacitor；
2 ends of the common mode inductance L2 with 4 ends of common mode inductance L2 are connected to rectifier bridge DB1 two exchange input
End；Capacitance X2 is connected between two ac input ends of rectifier bridge DB1；The anode and thermistor of the rectifier bridge DB1
NTC1 one end connects；The thermistor NTC1 other ends, capacitance EC1 positive terminals, resistance R7 one end, resistance R9 one end, resistance
R11 one end, capacitance C2 one end, capacitance C3 one end are connected with 4 ends of transformer T1；The resistance R7 other ends and resistance R8 mono-
End connection；The resistance R9 other ends are connected with resistance R10 one end；The rectifier bridge DB1 cathodes, capacitance EC1 negative pole ends, resistance R8 are another
One end is grounded；The capacitance C2 other ends are connected with resistance R12 one end；The resistance R11 other ends, the resistance R12 other ends
It is connected with diode D2 cathodes；The resistance R10 other ends, diode D2 anodes, transformer T1 2 ends and power management
Module connects；The capacitance C3 other ends are connected with capacitance C15 one end；The capacitance C15 other ends ground connection；Above-mentioned rectifier bridge
The model KBP210 of DB1；The model 20mH/UU9.8 of common mode inductance L2；The model F7/SOD123-FL of diode D2；
Electric main is converted into the+310VDC of BLDC motors needs by voltage stabilizing output module, and whole circuit structure is simple and practical, is whole
Power circuit provides stable voltage, ensures the normal work of power circuit.
Preferably, the power management module includes power supply chip IC2, resistance R5, resistance R6, resistance RJ1, resistance RJ2
With capacitance C1；
1 pin of the power supply chip IC2 is connected with capacitance C1 one end；2 pins of the power supply chip IC2 and resistance R6
One end connects；3 pins of the power supply chip IC2 are connected with resistance R5 one end；4 pins of power supply chip IC2 and resistance RJ1 mono-
End is connected with resistance RJ2 one end；5 pins of the power supply chip IC2 and 6 pins of power supply chip IC2 with transformer T1 2
End connection；7 pins of the power supply chip IC2 and 8 pins of power supply chip IC2 are connected with 3 ends of transformer T1；The electricity
The resistance R5 other ends, the resistance R6 other ends are connected with diode D3 cathodes；The capacitance C1 other ends, the resistance RJ1 other ends and
The resistance RJ2 other ends are grounded；The model OB2338-DIP8 of power supply chip IC2.
Preferably, the BLDC motor switch power module includes secondary output module；The secondary output module includes
Diode D4, resistance R13, capacitance C4, capacitance EC3, capacitance EC4 and inductance L4；Capacitance EC3 and capacitance EC4 is polar capacitor；
The diode D4 anodes are connected with resistance R13 one end with 8 ends of transformer T1；The resistance R13 other ends and capacitance C4
One end connects；The capacitance C4 other ends, capacitance EC3 positive terminals, inductance L4 one end are connected with diode D4 cathodes；The electricity
The sense L4 other ends are connected with capacitance EC4 positive terminals；5 ends of the capacitance EC4 negative pole ends, capacitance EC3 negative pole ends and transformer T1
It is grounded；The model SR3100 of diode D4.
Preferably, the BLDC motor switch power module includes feedback module；The feedback module include resistance R14,
Resistance R15, resistance R16, resistance RJ3, resistance RJ6, resistance RJ7, capacitance C5, integrated chip IC3, optocoupler OP1；
Described resistance R15 one end is connected with diode D4 cathodes；The resistance R15 other ends and optocoupler OP1 anodes, resistance
R14 one end connects；The resistance R14 other ends, capacitance C5 one end, integrated chip IC3 cathodes are connected with optocoupler OP1 cathodes；
The capacitance C5 other ends are connected with resistance R16 one end；The optocoupler OP1 collectors are connected with 1 pin of power supply chip IC2；
The optocoupler OP1 emitters ground connection；The R ends of the integrated chip IC3, resistance RJ6 one end, resistance RJ7 one end, resistance R16 are another
One end is connected with resistance RJ3 one end；The tie point of the inductance L4 and capacitance EC4 are connected with the resistance RJ3 other ends；The collection
It is grounded into 3 anode of chip IC, the resistance RJ6 other ends, the resistance RJ7 other ends；The model EL817C of above-mentioned optocoupler OP1；Collection
Into the model CJ431/SOT-23 of chip IC 3；
Output voltage signal is fed back to power management module by feedback module；Power management module is exported according to feedback signal
Voltage, so as to ensure that whole switch power module safe and stable operation.
Preferably, the model EF20-2.2mH of the transformer T1.
Preferably, the model OB2338-DIP8 of the power supply chip IC2.
Preferably, the model F7/SOD123-FL of the diode D3；Capacitance EC2 is polar capacitor.
Preferably, the model EL817C of the optocoupler OP4；The model S8050 of the triode Q9.
Although more herein used such as transformer, diode, triode, capacitance, resistance, optocoupler, inductance, guarantor
The terms such as dangerous silk, rectifier bridge, thermistor, varistor, common mode inductance, power supply chip, integrated chip, but be not precluded from using
The possibility of other terms.The use of these terms is merely for the convenience of describing and explaining the nature of the invention；
It is all contrary to the spirit of the present invention that they, which are construed to any one of the additional limitations,.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, those of ordinary skill in the art should
Understand：It can still modify the technical solution described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical solution of type.
Claims (9)
1. the low BLDC motor power circuits of a kind of small stand-by power consumption, it is characterised in that including BLDC motor switch power supplys
Module and+15VDC electronic switch modules；Wherein：
The BLDC motor switch power module include voltage stabilizing output module, power management module, transformer T1, diode D3 and
Capacitance EC2；Described voltage stabilizing output module one end connects alternating current, and the other end is connected to 4 ends and 2 ends of the transformer T1；It is described
1 end of transformer T1 is connected with diode D3 anodes；The diode D3 cathodes are connected with capacitance EC2 one end；The capacitance EC2
3 ends of the other end and transformer T1 are grounded；The diode D3 cathodes also connect with power management module and voltage stabilizing output module
Connect；The power management module is connected with voltage stabilizing output module；
+ 15VDC the electronic switch modules include triode Q9, resistance R43, resistance R41, resistance R37 and optocoupler OP4；It is described
Triode Q9 emitters and resistance R43 one end are connected with diode D3 cathodes；The triode Q9 base stages and resistance R43 are another
End is connected with resistance R41 one end；+ 15VDC the ends of the triode Q9 collectors and interface module connect；The resistance R41
The other end and optocoupler OP4 collectors；Connected between the optocoupler OP4 anodes and the first power supply by resistance R37；The optocoupler
OP4 cathodes are connected with MCU；The optocoupler OP4 emitters ground connection.
2. the low BLDC motor power circuits of small stand-by power consumption according to claim 1, it is characterised in that：It is described steady
Output module is pressed to include fuse F1, varistor VAR1, thermistor NTC1, rectifier bridge DB1, common mode inductance L2, diode
D2, capacitance X1, capacitance X2, capacitance C2, capacitance C3, capacitance C15, capacitance EC1, resistance R3, resistance R4, resistance R7, resistance R8, electricity
Hinder R9, resistance R10, resistance R11 and resistance R12；
The firewire of described fuse F1 one end and alternating current connects；The fuse F1 other ends, varistor VAR1 one end, capacitance
X1 one end, resistance R3 one end are connected with 1 end of common mode inductance L2；3 ends of the common mode inductance L2, resistance R4 one end, capacitance
The X1 other ends, the varistor VAR1 other ends are connected with the zero curve of alternating current；The resistance R3 other ends and the resistance R4 other ends
Connection；
2 ends of the common mode inductance L2 and 4 ends of common mode inductance L2 are connected to two ac input ends of rectifier bridge DB1；
Capacitance X2 is connected between two ac input ends of rectifier bridge DB1；The anode of the rectifier bridge DB1 and thermistor NTC1 mono-
End connection；The thermistor NTC1 other ends, capacitance EC1 one end, resistance R7 one end, resistance R9 one end, resistance R11 one end,
Capacitance C2 one end, capacitance C3 one end are connected with 4 ends of transformer T1；The resistance R7 other ends are connected with resistance R8 one end；
The resistance R9 other ends are connected with resistance R10 one end；The rectifier bridge DB1 cathodes, the capacitance EC1 other ends, the resistance R8 other ends are equal
Ground connection；The capacitance C2 other ends are connected with resistance R12 one end；The resistance R11 other ends, the resistance R12 other ends are with two
Pole pipe D2 cathodes connect；The resistance R10 other ends, diode D2 anodes, 2 ends of transformer T1 connect with power management module
Connect；The capacitance C3 other ends are connected with capacitance C15 one end；The capacitance C15 other ends ground connection.
3. the low BLDC motor power circuits of small stand-by power consumption according to claim 2, it is characterised in that：The electricity
Source control module includes power supply chip IC2, resistance R5, resistance R6, resistance RJ1, resistance RJ2 and capacitance C1；
1 pin of the power supply chip IC2 is connected with capacitance C1 one end；2 pins of the power supply chip IC2 and resistance R6 one end
Connection；3 pins of the power supply chip IC2 are connected with resistance R5 one end；4 pins of power supply chip IC2 and resistance RJ1 one end and
Resistance RJ2 one end connects；2 ends of 5 pins of the power supply chip IC2 and 6 pins of power supply chip IC2 with transformer T1 connect
Connect；7 pins of the power supply chip IC2 and 8 pins of power supply chip IC2 are connected with 3 ends of transformer T1；The resistance R5
The other end, the resistance R6 other ends are connected with diode D3 cathodes；The capacitance C1 other ends, the resistance RJ1 other ends and the resistance
The RJ2 other ends are grounded.
4. the low BLDC motor power circuits of small stand-by power consumption according to claim 3, it is characterised in that：It is described
BLDC motor switch power module includes secondary output module；The secondary output module includes diode D4, resistance R13, electricity
Hold C4, capacitance EC3, capacitance EC4 and inductance L4；The diode D4 anodes connect with 8 ends of the resistance R13 one end with transformer T1
Connect；The resistance R13 other ends are connected with capacitance C4 one end；The capacitance C4 other ends, capacitance EC3 one end, inductance L4 one end
It is connected with diode D4 cathodes；The inductance L4 other ends are connected with capacitance EC4 one end；The capacitance EC4 other ends, capacitance
5 ends of the EC3 other ends and transformer T1 are grounded.
5. the low BLDC motor power circuits of small stand-by power consumption according to claim 4, it is characterised in that：It is described
BLDC motor switch power module includes feedback module；The feedback module includes resistance R14, resistance R15, resistance R16, resistance
RJ3, resistance RJ6, resistance RJ7, capacitance C5, integrated chip IC3, optocoupler OP1；
Described resistance R15 one end is connected with diode D4 cathodes；The resistance R15 other ends and optocoupler OP1 anodes, resistance R14
One end connects；The resistance R14 other ends, capacitance C5 one end, integrated chip IC3 cathodes are connected with optocoupler OP1 cathodes；It is described
The capacitance C5 other ends are connected with resistance R16 one end；The optocoupler OP1 collectors are connected with 1 pin of power supply chip IC2；It is described
Optocoupler OP1 emitters are grounded；The R ends of the integrated chip IC3, resistance RJ6 one end, resistance RJ7 one end, the resistance R16 other ends
It is connected with resistance RJ3 one end；The tie point of the inductance L4 and capacitance EC4 are connected with the resistance RJ3 other ends；The integrated core
Piece IC3 anodes, the resistance RJ6 other ends, the resistance RJ7 other ends are grounded.
6. the low BLDC motor power circuits of small stand-by power consumption according to claim 1, it is characterised in that：The change
The model EF20-2.2mH of depressor T1.
7. according to the low BLDC motor power circuits of the small stand-by power consumption of claim 3-5 any one of them, its feature exists
In：The model OB2338-DIP8 of the power supply chip IC2.
8. the low BLDC motor power circuits of small stand-by power consumption according to claim 1, it is characterised in that：Described two
The model F7/SOD123-FL of pole pipe D3；Capacitance EC2 is polar capacitor.
9. the low BLDC motor power circuits of small stand-by power consumption according to claim 1, it is characterised in that：The light
The model EL817C of coupling OP4；The model S8050 of the triode Q9.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108448899A (en) * | 2018-03-31 | 2018-08-24 | 厦门芯阳科技股份有限公司 | A kind of drop sheet and energy saving BLDC motors isolated power supply structure |
| CN110176883A (en) * | 2019-06-04 | 2019-08-27 | 珠海格力电器股份有限公司 | DC motor control circuit |
-
2017
- 2017-10-24 CN CN201721376962.2U patent/CN207321129U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108448899A (en) * | 2018-03-31 | 2018-08-24 | 厦门芯阳科技股份有限公司 | A kind of drop sheet and energy saving BLDC motors isolated power supply structure |
| CN110176883A (en) * | 2019-06-04 | 2019-08-27 | 珠海格力电器股份有限公司 | DC motor control circuit |
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