CN208971374U - Electric power management circuit - Google Patents
Electric power management circuit Download PDFInfo
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- CN208971374U CN208971374U CN201820802113.7U CN201820802113U CN208971374U CN 208971374 U CN208971374 U CN 208971374U CN 201820802113 U CN201820802113 U CN 201820802113U CN 208971374 U CN208971374 U CN 208971374U
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Abstract
The utility model provides a kind of electric power management circuit, including input port, output port, input rectifying filter unit, HF power conversion unit, filtering high-frequency rectifier unit, PWM pulse width control unit, power tube driving unit, output sampling unit and output current limiting control unit；The input port, input rectifying filter unit, HF power conversion unit, filtering high-frequency rectifier unit and the output port are sequentially connected；The PWM pulse width control unit is connect with the control terminal of the HF power conversion unit by the power tube driving unit to adjust the output power of the HF power conversion unit, the output sampling unit is connect with output port, and output current limiting control unit is connect with output sampling unit and PWM pulse width control unit respectively.
Description
Technical field
The utility model relates to circuit fields, and in particular to a kind of electric power management circuit.
Background technique
Electric power management circuit in the prior art is all using PWM pulse-width controlled chip direct voltage output to main switch
The control terminal of triode adjusts output electric current or voltage swing by controlling the duty ratio of the main switch triode.But
There are driving voltage deficiency in such a way that PWM pulse-width controlled chip directly exports control voltage to main switch triode, master is opened
There is delay in the switch for closing triode, cause control not accurate.
Therefore, the prior art is defective, needs to improve.
Utility model content
The utility model embodiment provides a kind of electric power management circuit, has control accurately beneficial effect.
The utility model embodiment provides a kind of electric power management circuit, including input port, output port, input rectifying
It is filter unit, HF power conversion unit, filtering high-frequency rectifier unit, PWM pulse width control unit, power tube driving unit, defeated
Sampling unit, internal auxiliary power supply, output current limiting control unit and output voltage control unit out；
The input port, input rectifying filter unit, HF power conversion unit, filtering high-frequency rectifier unit and this is defeated
Exit port is sequentially connected；The PWM pulse width control unit passes through the control of the power tube driving unit and the HF power conversion unit
End processed is connected to adjust the output power of the HF power conversion unit, which connect with output port, is exported
Current limited Control unit is connect with output sampling unit and PWM pulse width control unit respectively；One end of the internal auxiliary power supply with
Input rectifying filter unit connection, the other end of the internal auxiliary power supply are connect with the PWM pulse width control unit；
The output voltage control unit is connect with the PWM pulse width control unit to control the output voltage of the output port；
The internal auxiliary power supply includes control chip, the 21st capacitor, the 8th resistance, the 4th diode, the 4th transformation
Device mould group, the 5th diode, the 22nd capacitor, switch S1, the 6th diode, the 23rd capacitor, optocoupler and the 9th electricity
Resistance；4th transformer mould group has a primary side winding and third vice-side winding and the 4th vice-side winding；
One end of 21st capacitor and voltage input end, one end of the 8th resistance and the 4th transformer mould group
Primary side winding anode connection, the other end, the 4th diode of the other end of the 21st capacitor and the 8th resistance
Cathode connection, the 4th diode anode connect with the negative terminal of the primary side winding of the 4th transformer mould group, the four or two
Pole pipe is also connect with the control chip with the common node of the primary side winding of the 4th transformer mould group, the 4th transformer mould group
The anode of anode and the 5th diode of third vice-side winding connect, the cathode and the voltage output end of the 5th diode
Connection, the negativing ending grounding of the third vice-side winding of the 4th transformer mould group, one end and the five or two of the 22nd capacitor
The cathode of pole pipe connects, and the other end ground connection of the 22nd capacitor, one end of the switch is connect with voltage output end VCC1,
The other end of the switch is grounded, the negativing ending grounding of the 4th vice-side winding of the 4th transformer mould group, the 4th transformer mould group
The anode of anode and the 6th diode of the 4th vice-side winding connect, the cathode of the 6th diode is electric with the 23rd
One end of appearance connects, and the other end ground connection of the 23rd capacitor, the VDD pin of the control chip and the input terminal of the optocoupler connect
Connect, the feedback pin FB of the control chip is connect with the voltage output end of the optocoupler, the light emitting diode of the optocoupler anode with
One end of 9th resistance connects, and the other end of the 9th resistance is connect with the voltage output end, the light emitting diode of the optocoupler
Cathode ground connection.
In electric power management circuit described in the utility model, described output voltage control unit include slide rheostat,
22nd resistance and the 27th capacitor, the PWM pulse width control unit include chip IC 1；
One end and one end of the 27th capacitor of 22nd resistance and the IN+ pin of the chip IC 1 are connect, separately
One end ground connection；
One end of 22nd resistance is connect with the IN+ pin of the chip IC 1, the cunning of the other end and the slide rheostat
Moved end connection, a termination the of the slide rheostat, the other end is connect with the Vref pin of the chip IC 1.
In electric power management circuit described in the utility model, the input rectifying filter unit include NTC thermistor,
Fuse, third capacitor, EMI filter circuit and current rectifying and wave filtering circuit；
The anode of the input port is connect with one end of the fuse, the other end of the fuse and the EMI filter circuit
Input terminal connection, the cathode of the input port connect with one end of the NTC thermistor, the NTC thermistor it is another
End is connect with another input terminal of the EMI filter circuit, and two output ends of the EMI filter circuit are electric with the rectifying and wave-filtering respectively
Two input terminals on road connect, and the output end of the current rectifying and wave filtering circuit is connect with the HF power conversion unit.
In electric power management circuit described in the utility model, the EMI filter circuit include first capacitor, the second capacitor with
And common mode inductance；The current rectifying and wave filtering circuit includes first diode and the 4th capacitor；Two input terminals of the common mode inductance point
Do not connect with the fuse and the NTC thermistor, two output ends of the common mode inductance respectively with the first capacitor and
One end of second capacitor connects, the other end ground connection of the first capacitor and the second capacitor；Distinguish at the both ends of the first diode
It is connect with two output ends of two common mode inductances, the both ends of the 4th capacitor connect with the both ends of the first diode respectively
It connects, the both ends of the third capacitor are connect with the both ends of the common mode inductance respectively.
In electric power management circuit described in the utility model, which includes the 8th diode, the 9th
Diode, the tenth diode, the 11st diode, the 33rd capacitor, the 34th capacitor, third transformer mould group；This
Three transformer mould groups have a primary side winding, the first vice-side winding, the second vice-side winding, B1 and B2 terminal；B1 and B2 terminal point
It is not connect with PWM pulse width control unit, controls signal to receive it；The anode of 8th diode is negative with the tenth diode
Pole connection, the tenth diode anode with the 11st diode anode connect, the cathode of the 11st diode and be somebody's turn to do
The anode connection of 9th diode, the cathode of the 9th diode connect with the cathode of the 8th diode, the B1 terminal and this
The anode connection of the cathode and the 9th diode of 11st diode, the 33rd capacitor and the 34th capacitor
Both ends are separately connected, which connect with the anode of the 8th diode and with the cathode of the tenth diode, and the 8th
The anode of diode and primary side winding with the common node of the cathode of the tenth diode also with the third transformer mould group
Negative terminal connection, the 33rd capacitor and the 34th capacitor one end connect with the B1 terminal, the 33rd capacitor and
The other end of 34th capacitor is connect with the anode of the primary side winding of the third transformer mould group；
First vice-side winding and the second vice-side winding are connect with the HF power conversion unit respectively.
In electric power management circuit described in the utility model, which includes the 5th capacitor, the 6th
Capacitor, first resistor, second resistance, the first field-effect tube, the second field-effect tube, the 7th capacitor, the 8th capacitor, the second transformation
Device, 3rd resistor, the 4th resistance, IN- terminal and IN+ terminal；
The anode of first vice-side winding of the third transformer mould group passes through the first resistor and first field-effect tube
The anode of grid connection, the second vice-side winding of the third transformer mould group passes through the second resistance and second field-effect tube
Grid connection；One end of 5th capacitor is connect with the IN+ terminal, the other end of the 5th capacitor and one end of the 6th capacitor
Connection, the other end of the 6th capacitor are connect with the IN- terminal.The negative terminal of first vice-side winding of the third transformer mould group with
One end of the primary side winding of second transformer connects, the common node and second transformation of the 5th capacitor and the 6th capacitor
The other end of the primary side winding of device connects, the input terminal of first field-effect tube and the IN+ terminal and the 5th capacitance connection,
The secondary side of the first of the input terminal and the third transformer mould group of the output end of first field-effect tube and second field-effect tube
The negative terminal of winding connects, the output end of second field-effect tube and the IN- terminal and the 6th capacitance connection, the 3rd resistor
One section connect with the input terminal of the IN+ terminal and first field-effect tube, the other end of the 3rd resistor with the 7th electricity
One end of appearance connects, and the other end of the 7th capacitor connect with one end of the 4th resistance, the other end of the 4th resistance and this
One end of 8th capacitor connects, and the other end of the 8th capacitor and the IN- terminal and the output end of second field-effect tube connect
It connects, the negative terminal of the first vice-side winding of the common node of the 7th capacitor and the 4th resistance and the third transformer mould group connects
It connects.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the electric power management circuit in the utility model embodiment.
Fig. 2 is the circuit diagram of the input rectifying filter unit of the electric power management circuit in the utility model embodiment.
Fig. 3 is the circuit diagram of a part of the electric power management circuit in the utility model embodiment.
Fig. 4 is another local circuit diagram of the electric power management circuit in the utility model embodiment.
Fig. 5 is the circuit diagram of the internal auxiliary power supply of the electric power management circuit in the utility model embodiment.
Specific embodiment
The embodiments of the present invention is described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein
Same or similar label indicates same or similar element or element with the same or similar functions from beginning to end.Lead to below
It crosses the embodiment being described with reference to the drawings to be exemplary, is only used for explaining the utility model, and should not be understood as practical to this
Novel limitation.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside",
The orientation or positional relationship of the instructions such as " clockwise ", " counterclockwise " be based on the orientation or positional relationship shown in the drawings, be only for
Convenient for description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have specifically
Orientation is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " first ",
" second " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicates indicated technology
The quantity of feature.Define " first " as a result, the feature of " second " can explicitly or implicitly include it is one or more
The feature.The meaning of " plurality " is two or more in the description of the present invention, unless otherwise clearly specific
It limits.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected or can mutually communicate；It can be directly connected, it can also be in
Between medium be indirectly connected, can be the connection inside two elements or the interaction relationship of two elements.For this field
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or it
"lower" may include that the first and second features directly contact, and also may include that the first and second features are not direct contacts but lead to
Cross the other characterisation contact between them.Moreover, fisrt feature includes above the second feature " above ", " above " and " above "
One feature is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.First is special
Sign is directly below and diagonally below the second feature including fisrt feature under the second feature " below ", " below " and " below ", or only
Indicate that first feature horizontal height is less than second feature.
Following disclosure provides many different embodiments or example is used to realize the different structure of the utility model.
In order to simplify the disclosure of the utility model, hereinafter the component of specific examples and setting are described.Certainly, they are only
Example, and purpose does not lie in limitation the utility model.In addition, the utility model can in different examples repeat reference numerals
And/or reference letter, this repetition are for purposes of simplicity and clarity, itself not indicate discussed various embodiments
And/or the relationship between setting.In addition, the example of various specific techniques and material that the utility model provides, but this
Field those of ordinary skill can be appreciated that the application of other techniques and/or the use of other materials.
Fig. 1 is please referred to, Fig. 1 is the structural schematic diagram of the electric power management circuit in an embodiment of the present invention, the power supply
Circuit is managed, including input port A, output port B, internal auxiliary power supply 10, input rectifying filter unit 20, high frequency power become
Change unit 30, filtering high-frequency rectifier unit 40, PWM pulse width control unit 50, power tube driving unit 60, output sampling unit
70, output current limiting control unit 80 and output voltage control unit 90.
Wherein, input port 10A, input rectifying filter unit 20, HF power conversion unit 30, filtering high-frequency rectifier
Unit 40 and output port 10B are sequentially connected.The PWM pulse width control unit 50 by the power tube driving unit 60 with
The control terminal of the HF power conversion unit 40 is connected to adjust the output power of the HF power conversion unit 30, which adopts
Sample unit 70 is connect with output port 10B, output current limiting control unit 80 respectively with output sampling unit 70 and PWM pulsewidth control
Unit 50 processed connects.The output voltage control unit 90 is connect with the PWM pulse width control unit 50.The internal auxiliary power supply 10
One end is connect with the input rectifying filter unit 20, the other end of the internal auxiliary power supply 10 and the PWM pulse width control unit 50
Connection.
Specifically, referring to figure 2., the input rectifying filter unit 20 include NTC thermistor RT1 wave resistance, fuse F1,
Third capacitor C3, EMI filter circuit 21 and current rectifying and wave filtering circuit 22.
Wherein, input port A anode connect with one end of fuse F1, the other end of fuse F1 and this
One input terminal of EMI filter circuit 21 connects, and the cathode of input port A is connect with one end of NTC thermistor RT1, should
The other end of NTC thermistor RT1 is connect with another input terminal of the EMI filter circuit 21, and the two of the EMI filter circuit 21
A output end is connect with two input terminals of the current rectifying and wave filtering circuit 22 respectively, the output end of the current rectifying and wave filtering circuit 22 with should
HF power conversion unit 30 connects.
Wherein, which includes first capacitor C1, the second capacitor C2 and common mode inductance T1.Rectification filter
Wave circuit 22 includes first diode D1 and the 4th capacitor C4.Two input terminals of common mode inductance T1 respectively with the insurance
Silk F1 and NTC thermistor RT1 connection, two output ends of two common mode inductance T1 respectively with first capacitor C1 with
And second capacitor C2 one end connection, the other end ground connection of first capacitor C1 and the second capacitor C2.First diode D1
Both ends connect respectively with two output ends of two common mode inductance T1.The both ends of 4th capacitor C4 are respectively with the one or two
The both ends of pole pipe D1 connect.The both ends of third capacitor C3 are connect with the both ends of common mode inductance T1 respectively.
Referring to figure 3., power tube driving unit 60 includes the 8th diode D8, the 9th diode D9, the tenth diode
D10, the 11st diode D11, the 33rd capacitor, the 34th capacitor, third transformer mould group T3.The third transformer mould
Group T3 has a primary side winding and two vice-side windings.Wherein, which connects with PWM pulse width control unit 50 respectively
It connects, controls signal to receive it.The anode of 8th diode D8 is connect with the cathode of the tenth diode D10, and the 12nd
The anode of pole pipe D10 is connect with the anode of the 11st diode D11, the cathode and the 9th 2 of the 11st diode D11
The anode connection of pole pipe D9, the cathode of the 9th diode are connect with the cathode of the 8th diode.The B1 terminal and the tenth
The anode connection of the cathode and the 9th diode D9 of one diode D11, the electricity of the 33rd capacitor C33 and the 34th
The both ends for holding C34 are separately connected, cathode of the B2 terminal with the anode of the 8th diode D8 and with the tenth diode D10
Connection, the anode of the 8th diode D8 and with the common node of the cathode of the tenth diode D10 also with the third transformation
The negative terminal connection of the primary side winding of device mould group, the 33rd capacitor C33 and the 34th one end capacitor C34 and the B1 terminal
The primary side winding of the other end and third transformer mould group of connection, the 33rd capacitor C33 and the 34th capacitor C34
Anode connection.
The HF power conversion unit 30 include the 5th capacitor C5, the 6th capacitor C6, first resistor R1, second resistance R2,
First field-effect tube Q1, the second field-effect tube Q2, the 7th capacitor C7 and the 8th capacitor C8, the second transformer T2,3rd resistor
R3, the 4th resistance R4.
The anode of the first vice-side winding of third transformer mould group T3 passes through first resistor R1 and first field-effect
The grid of pipe Q1 connects, the anode of the second vice-side winding of third transformer mould group T3 by second resistance R2 and this second
The grid of field-effect tube Q2 connects.IN+ the and IN- terminal is connect with IN+ the and IN- terminal in the Fig. 2 respectively, this
One end of five capacitors is connect with the IN+ terminal, and the other end of the 5th capacitor is connect with one end of the 6th capacitor C6, and the 6th
The other end of capacitor is connect with the IN- terminal.The negative terminal and second transformation of first vice-side winding of the third transformer mould group
One end of the primary side winding of device connects, the primary side of the common node and second transformer of the 5th capacitor and the 6th capacitor around
The other end connection of group, the input terminal and the IN+ terminal and the 5th capacitance connection of first field-effect tube Q1, this first
The first secondary side of the input terminal of the output end of effect pipe Q1 and second field-effect tube Q2 and third transformer mould group T3 around
The negative terminal connection of group, the output end and the IN- terminal and the 6th capacitance connection of second field-effect tube Q2.The 3rd resistor
One section connect with the input terminal of the IN+ terminal and first field-effect tube Q1, the other end of the 3rd resistor and the 7th
One end of capacitor connects, and the other end of the 7th capacitor is connect with one end of the 4th resistance, the other end of the 4th resistance and
One end of 8th capacitor connects, the output of the other end of the 8th capacitor and the IN- terminal and second field-effect tube Q2
End connection.The first vice-side winding of the common node of 7th capacitor and the 4th resistance and third transformer mould group T3
Negative terminal connection.
The filtering high-frequency rectifier unit 40 includes the 11st capacitor C11, the 12nd capacitor C12, the 5th resistance R5, the 6th
Resistance R6, the second diode D2, third diode D3, the first inductance L1, resistance RL1, resistance RL2, resistance RL3, resistance RL4,
13rd capacitor C13, the 14th capacitor C14, the 17th capacitor C17.
Wherein, the 11st capacitor of anode of the anode of the vice-side winding of second transformer T2 and second diode D2
One end connection, the cathode of second diode D2 and the OUT+ terminal are connected to the anode of output port, the 11st electricity
The other end for holding C11 is connect by the 5th resistance R5 with the cathode of second diode D2, the secondary side of second transformer T2
The negative terminal of winding is connect with one end of the anode of third diode D3 and the 12nd capacitor C12, the 12nd capacitor C12
The other end connect with the cathode of third diode D3 by the 6th resistance R6, the cathode of third diode D3 and this
The cathode of second diode D2 connects.
Between the anode and negative terminal of the vice-side winding of second transformer T2 have a lead end, the lead end and this first
One end of inductance connects, and the other end of first inductance L1 connect with one end of resistance RL1, the other end of resistance L1 and this
OUT- terminal is connected to the cathode of output port.Resistance RL2, resistance RL3, resistance RL4 both ends respectively with the resistance
The both ends of RL1 connect.One end of 13rd capacitor C13 is connect with the cathode of second diode D2, the 13rd capacitor C13
The other end connect with resistance RL1, the both ends of the 14th capacitor C14 are connect with the both ends of the 13rd capacitor C13 respectively.
One end of 17th capacitor C17 is connect with resistance RL1, the other end ground connection of the 17th capacitor C17.
Wherein, which is common voltage conversion circuit, is the prior art, will be from input rectifying
The voltage that the voltage that filter unit 20 obtains is converted to default specification provides the PWM pulse width control unit 50 use.The PWM pulsewidth
Control unit 50 is common PWM pulse width control circuit comprising a PWM pulse-width controlled chip and its peripheral circuit.
Wherein, which is used to detect the voltage and current information of the output port, and it is defeated then to feed back to this
Current limited Control unit 80 out, the output current limiting control unit 80 have comparing function, will be from the collected electric current of the output port
Signal is converted to voltage signal, and the voltage signal is compared with predeterminated voltage, so that it is pre- to be greater than this in the voltage signal
If judging that the output end current exceeds preset range when voltage, and comparison result is sent to the PWM pulse width control unit 50
PWM pulse-width controlled chip.The PWM pulse-width controlled HF power conversion unit 30 reduces output end current size.PWM pulsewidth
Control the model KA3525 of chip.5 foot of chip meets concussion capacitor C28.6 foot resistance R16 are the charging electricity for capacitor is arranged
Stream, the size of electric current determines the slope on capacitor, to determine the switching frequency of entire power supply.7 foot resistance R15 are electricity
The discharge resistance of appearance is the dead time for switching tube is arranged.Chip interior has comparator, on the voltage and 6 feet to 9 feet
Sawtooth wave compares, to generate the square wave of driving power pipe.
Output voltage control unit 90 is connect with the PWM pulse width control unit 50, with the output voltage of control output end mouthful.
Specifically, referring to figure 4., which includes slide rheostat VR1, the 22nd resistance R22
And the 27th capacitor C27.The PWM pulse width control unit 50 includes chip IC 1.One end of 22nd resistance R22 with should
One end of 27th capacitor C27 is connect with the IN+ pin of the chip IC 1, other end ground connection.22nd resistance R22's
One end is connect with the IN+ pin of the chip IC 1, and the other end is connect with the sliding end of slide rheostat VR1.The slide rheostat
A termination the of VR1, the other end is connect with the Vref pin of the chip IC 1.1,2,9 feet of IC1 are the operations inside chip IC 1
Amplifier.9 foot voltages are for comparing with the sawtooth wave on 6 feet.When the voltage signal that output voltage is fed back is higher than 2 feet
When, 9 foot voltages can reduce, and reduce the duty ratio for driving square wave, and output voltage follows reduction, to be that output voltage keeps permanent
It is fixed.VR1 is for adjusting output voltage.When adjusting VR1, voltage can follow variation on 2 feet of IC1, to make the output of power supply
Voltage follow variation.Slide rheostat VR1 can control output voltage by interface remote.
Referring to figure 5., which includes control chip IC 5, the 21st capacitor C21, the 8th resistance R8, the
Four diode D4, the 4th transformer mould group T4, the 5th diode D5, the 22nd capacitor C22, switch S1, the 6th diode
D6, the 23rd capacitor C23, the 24th capacitor C24, optocoupler U2, the 9th resistance R9 and the 7th zener diode D7, electricity
Press input terminal, voltage output end VCC1.4th transformer mould group T4 has a primary side winding and third vice-side winding and the
Four vice-side windings.
Wherein, one end and the 4th of one end of the 21st capacitor C21 and voltage input end, the 8th resistance R8
The anode of the primary side winding of transformer mould group T4 connects, and the other end of the 21st capacitor is another with the 8th resistance R8's
The cathode connection at end, the 4th diode D4, the anode of the 4th diode D4 and the primary side of the 4th transformer mould group T4 around
The negative terminal connection of group, the common node of the primary side winding of the 4th diode D4 and the 4th transformer mould group T4 also with the control
Chip IC 5 connects, and the anode of the third vice-side winding of the 4th transformer mould group T4 is connect with the anode of the 5th diode, should
The cathode of 5th diode is connect with voltage output end VCC1, the negative terminal of the third vice-side winding of the 4th transformer mould group T4
Ground connection.One end of 22nd capacitor C22 is connect with the cathode of the 5th diode D5, and the 22nd capacitor C22's is another
One end ground connection, one end of switch S1 are connect with voltage output end VCC1, the other end ground connection of switch S1.4th becomes
The negativing ending grounding of the 4th vice-side winding of depressor mould group T4, the anode of the 4th vice-side winding of the 4th transformer mould group T4 with should
The anode connection of 6th diode D6, the cathode of the 6th diode D6 connect with one end of the 23rd capacitor C23, this
The other end of 23 capacitor C23 is grounded.The VDD pin of the control chip IC 5 is connect with the input terminal of the optocoupler, the control core
The feedback pin FB of piece IC5 is connect with the voltage output end of optocoupler U2, the anode of the light emitting diode of optocoupler U2 with this
One end of nine resistance connects, and the other end of the 9th resistance is connect by zener diode D7 with voltage output end VCC1.
The cathode of the light emitting diode of optocoupler U2 is grounded.
Wherein, the model VIPER22A of the control chip.
In the description of this specification, reference term " embodiment ", " certain embodiments ", " schematically implementation
What the description of mode ", " example ", " specific example " or " some examples " etc. meant to describe in conjunction with the embodiment or example
Particular features, structures, materials, or characteristics are contained at least one embodiment or example of the utility model.In this explanation
In book, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, the specific spy of description
Sign, structure, material or feature can be combined in any suitable manner in any one or more embodiments or example.
Although above preferred embodiment is not used in conclusion the utility model is disclosed above with preferred embodiment
To limit the utility model, those skilled in the art can make without departing from the spirit and scope of the utility model
It is various to change and retouch, therefore the protection scope of the utility model subjects to the scope of the claims.
Claims (5)
1. a kind of electric power management circuit, which is characterized in that including input port, output port, input rectifying filter unit, high frequency
Power conversion unit, PWM pulse width control unit, power tube driving unit, exports sampling unit, is interior filtering high-frequency rectifier unit
Portion's accessory power supply, output current limiting control unit；
The input port, input rectifying filter unit, HF power conversion unit, filtering high-frequency rectifier unit and the output end
Mouth is sequentially connected；The PWM pulse width control unit passes through the control terminal of the power tube driving unit and the HF power conversion unit
It connects to adjust the output power of the HF power conversion unit, which connect with output port, output current limiting
Control unit is connect with output sampling unit and PWM pulse width control unit respectively；One end of the internal auxiliary power supply is defeated with this
Enter rectification filtering unit connection, the other end of the internal auxiliary power supply is connect with the PWM pulse width control unit；
The output voltage control unit is connect with the PWM pulse width control unit to control the output voltage of the output port.
2. electric power management circuit according to claim 1, which is characterized in that the input rectifying filter unit includes NTC
Thermistor, fuse, third capacitor, EMI filter circuit and current rectifying and wave filtering circuit；
The anode of the input port is connect with one end of the fuse, the other end of the fuse and the one of the EMI filter circuit
Input terminal connection, the cathode of the input port connect with one end of the NTC thermistor, the other end of the NTC thermistor and
Another input terminal of the EMI filter circuit connects, two output ends of the EMI filter circuit respectively with the current rectifying and wave filtering circuit
Two input terminal connections, the output end of the current rectifying and wave filtering circuit are connect with the HF power conversion unit.
3. electric power management circuit according to claim 2, which is characterized in that the EMI filter circuit includes first capacitor,
Two capacitors and common mode inductance；The current rectifying and wave filtering circuit includes first diode and the 4th capacitor；Two of the common mode inductance
Input terminal is connect with the fuse and the NTC thermistor respectively, two output ends of the common mode inductance respectively with this first
The other end ground connection of the connection of one end of capacitor and the second capacitor, the first capacitor and the second capacitor；The first diode
Both ends are connect with two output ends of two common mode inductances respectively, the both ends of the 4th capacitor respectively with the first diode
Both ends connection, the both ends of the third capacitor are connect with the both ends of the common mode inductance respectively.
4. electric power management circuit according to claim 3, which is characterized in that the power tube driving unit includes the eight or two pole
Pipe, the 9th diode, the tenth diode, the 11st diode, the 33rd capacitor, the 34th capacitor, third transformer mould
Group；The third transformer mould group has a primary side winding, the first vice-side winding, the second vice-side winding, B1 and B2 terminal；B1 and B2
Terminal is connect with PWM pulse width control unit respectively, controls signal to receive it；Anode and the 12nd pole of 8th diode
The cathode of pipe connects, and the anode of the tenth diode is connect with the anode of the 11st diode, and the 11st diode is born
Pole is connect with the anode of the 9th diode, and the cathode of the 9th diode is connect with the cathode of the 8th diode, the end B1
Son is connect with the anode of the cathode of the 11st diode and the 9th diode, the 33rd capacitor and the 34th
The both ends of capacitor are separately connected, which connect with the anode of the 8th diode and with the cathode of the tenth diode,
The anode of 8th diode and original with the common node of the cathode of the tenth diode also with the third transformer mould group
The negative terminal of side winding connects, and the 33rd capacitor and the 34th capacitor one end are connect with the B1 terminal, the 33rd electricity
Hold and the other end of the 34th capacitor is connect with the anode of the primary side winding of the third transformer mould group；
First vice-side winding and the second vice-side winding are connect with the HF power conversion unit respectively.
5. electric power management circuit according to claim 4, which is characterized in that the HF power conversion unit includes the 5th electricity
Appearance, the 6th capacitor, first resistor, second resistance, the first field-effect tube, the second field-effect tube, the 7th capacitor, the 8th capacitor,
Two transformers, 3rd resistor, the 4th resistance, IN- terminal and IN+ terminal；
The anode of first vice-side winding of the third transformer mould group passes through the grid of the first resistor and first field-effect tube
Connection, the anode of the second vice-side winding of the third transformer mould group pass through the grid of the second resistance and second field-effect tube
Connection；One end of 5th capacitor is connect with the IN+ terminal, and the other end of the 5th capacitor and one end of the 6th capacitor connect
It connects, the other end of the 6th capacitor is connect with the IN- terminal；The negative terminal of first vice-side winding of the third transformer mould group with should
One end of the primary side winding of second transformer connects, the common node and second transformer of the 5th capacitor and the 6th capacitor
Primary side winding other end connection, the input terminal of first field-effect tube and the IN+ terminal and the 5th capacitance connection should
First secondary side of the input terminal of the output end of the first field-effect tube and second field-effect tube and the third transformer mould group around
The negative terminal connection of group, the output end of second field-effect tube and the IN- terminal and the 6th capacitance connection, the 3rd resistor
One section connect with the input terminal of the IN+ terminal and first field-effect tube, the other end of the 3rd resistor and the 7th capacitor
One end connection, the other end of the 7th capacitor connect with one end of the 4th resistance, the other end of the 4th resistance with this
One end of eight capacitors connects, and the other end of the 8th capacitor is connect with the output end of the IN- terminal and second field-effect tube,
The common node of 7th capacitor and the 4th resistance is connect with the negative terminal of the first vice-side winding of the third transformer mould group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201820802113.7U CN208971374U (en) | 2018-05-28 | 2018-05-28 | Electric power management circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820802113.7U CN208971374U (en) | 2018-05-28 | 2018-05-28 | Electric power management circuit |
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| CN208971374U true CN208971374U (en) | 2019-06-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110827746A (en) * | 2019-11-05 | 2020-02-21 | 天津市英贝特航天科技有限公司 | CPCI power supply based on data acquisition and monitoring |
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2018
- 2018-05-28 CN CN201820802113.7U patent/CN208971374U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110827746A (en) * | 2019-11-05 | 2020-02-21 | 天津市英贝特航天科技有限公司 | CPCI power supply based on data acquisition and monitoring |
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