CN106059345A - Electromagnetic-interference filtering-type low-loss portable switch power supply of ripple suppression - Google Patents
Electromagnetic-interference filtering-type low-loss portable switch power supply of ripple suppression Download PDFInfo
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- CN106059345A CN106059345A CN201610643377.8A CN201610643377A CN106059345A CN 106059345 A CN106059345 A CN 106059345A CN 201610643377 A CN201610643377 A CN 201610643377A CN 106059345 A CN106059345 A CN 106059345A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses an electromagnetic-interference filtering-type low-loss portable switch power supply of ripple suppression. The power supply is mainly formed by a control chip U2, a transformer T1, a transformer T2, a diode rectifier U1, a voltage-stabilizing diode D1, a polarity capacitor C1, a resistor R2, a diode D5, a corrugated peak suppression circuit, a flyback-type conversion circuit, an electromagnetic interference filtering circuit, a high impedance voltage output circuit and the like, wherein the high impedance voltage output circuit is connected to a dotted terminal and a non-dotted terminal of a secondary inductance coil of the transformer T2 respectively. By using the power supply of the invention, conduction losses of a current and current losses caused by a circuit can be effectively reduced; a pulse width can be adjusted; a saturation state of magnetic intensity of a magnetic assembly can be effectively avoided; and current losses caused by the power supply can be effectively reduced and output current stability can be effectively increased.
Description
Technical field
The present invention relates to field of aluminum electrolysis, the EMI Filtering type low-loss specifically referring to the suppression of a kind of ripple is portable
Switching Power Supply.
Background technology
The rise of portable Switching Power Supply and develop into modern electronics industry and be filled with one fresh blood, and through long
The portable Switching Power Supply of Time evolution become people life in use electronic product must obligato ingredient, thus,
The performance of portable Switching Power Supply the most stably becomes for the most stable important factor of the duty of electronic product.Along with
The development of electronic product, people couple, portable Switching Power Supply is also got in the requirement of the aspects such as performance, reliability, safety
Come the highest.But, existing portable Switching Power Supply exist self to the too high problem of current loss, and cause load capacity
Low；Further, existing portable Switching Power Supply there is also the problem that output electric current is unstable, thus can not meet wanting of people
Ask.
Therefore it provides one can reduce current loss, the portable Switching Power Supply that can export again stable electric current becomes
It it is the task of top priority.
Summary of the invention
It is an object of the invention to overcome existing portable Switching Power Supply too high to the loss of electric current because there is self, defeated
Go out the defect that electric current is unstable, it is provided that the EMI Filtering portable Switching Power Supply of type low-loss of a kind of ripple suppression.
The purpose of the present invention realizes by following technical scheme: the EMI Filtering type low-loss of a kind of ripple suppression is portable
Formula Switching Power Supply, mainly by control chip U2, transformator T1, transformator T2, diode rectifier U1, P pole after resistance R1 with
The Zener diode that the cathode output end of diode rectifier U1 is connected, N pole is connected with the VIN pin of control chip U2
D1, after positive pole is connected with the positive pole of diode rectifier U1, negative pole is connected with the cathode output end of diode rectifier U1
The polar capacitor C1 of ground connection, one end is connected with the positive pole of polar capacitor C1, the other end is connected with the negative pole of polar capacitor C1
Resistance R2, be serially connected in one of them input of diode rectifier U1 and transformator T1 secondary inductance coil Same Name of Ends it
Between the Same Name of Ends of limit former with transformator T2, switch S, N pole inductance coil be connected, P pole after resistance R11 with control chip U2
The diode D5 that is connected of VOUT pin, positive pole P pole with diode D5 after resistance R12 is connected, the pole of minus earth
Property electric capacity C6, the ripple spike being serially connected in the cathode output end of diode rectifier U1 and the VC pin positive pole of control chip U2 presses down
Circuit processed, the inverse-excitation type change-over circuit being connected with ON/OF pin and the GND pin of control chip U2 respectively, it is serially connected in control
Electromagnetic interference filter circuit between FB pin and the inverse-excitation type change-over circuit of chip U2, and electric with transformator T2 secondary respectively
The high impedance voltage output circuit composition that the Same Name of Ends of sense coil is connected with non-same polarity；The former limit inductance of described transformator T2
The non-same polarity ground connection of coil；The LX pin of described control chip U2 is connected with BST pin；Described diode rectifier U1's
Another input is connected with the non-same polarity of transformator T1 secondary inductance coil.
Described ripple peak restrained electricity routing amplifier P, audion VT7, audion VT8, audion VT9, N pole is through resistance
The diode D14 that after R32, the positive pole with amplifier P is connected, P pole is connected with the cathode output end of diode rectifier U1,
The polarity that negative pole is connected with the emitter stage of audion VT7, positive pole is connected with the N pole of diode D14 after critesistor RT
Electric capacity C15, P pole colelctor electrode with audion VT7 after resistance R29 is connected, N pole after resistance R31 with the output of amplifier P
The diode D13 that is connected of end, negative pole is connected with the base stage of audion VT7, positive pole after resistance R30 with the N of diode D13
Polar capacitor C16, the P pole that pole is connected is connected with the emitter stage of audion VT9, the diode D15 of N pole ground connection, positive pole warp
The pole that after adjustable resistance R33, the negative pole with amplifier P is connected, negative pole is connected with the N pole of diode D15 after resistance R36
Property electric capacity C17, positive pole is connected with the base stage of audion VT9, negative pole after resistance R34 with the adjustable end phase of adjustable resistance R33
The polar capacitor C18 connected, one end is connected with the colelctor electrode of audion VT9, the other end is connected with the colelctor electrode of audion VT8
Meeting the adjustable resistance R38 of rear ground connection, one end is connected with the emitter stage of audion VT8, the other end is connected with the negative pole of amplifier P
The inductance L3 connect, and positive pole base stage with audion VT8 after resistance R37 is connected, negative pole after resistance R35 with amplifier
The polar capacitor C19 composition that the outfan of P is connected；The base stage of described audion VT7 also positive pole with amplifier P is connected；
The negative pole of described polar capacitor C19 be also connected with the VC pin of control chip U2 after ground connection.
Further, described electromagnetic interference filter circuit by field effect transistor MOS2, field effect transistor MOS3, audion VT5, three
Pole pipe VT6, negative pole drain electrode with field effect transistor MOS2 after inductance coil DL is connected, the FB pin of positive pole and control chip U2
The polar capacitor C10 being connected, negative pole negative pole with polar capacitor C10 after resistance R20 is connected, and positive pole is after resistance R21
Polar capacitor C11, the N pole being connected with the drain electrode of field effect transistor MOS2 negative pole with polar capacitor C10 after resistance R22 is connected
Connect, diode D9 that P pole emitter stage with audion VT5 after resistance R26 is connected, positive pole after resistance R24 with diode
The P pole of D9 is connected, negative pole base stage with audion VT6 after adjustable resistance R25 is connected polar capacitor C12, P pole and pole
The diode D10 that negative pole is connected, N pole is connected with the grid of field effect transistor MOS3 of property electric capacity C12, negative pole and audion
The emitter stage of VT5 be connected after the polar capacitor that is connected with the source electrode of field effect transistor MOS3 after resistance R27 of ground connection, positive pole
C13, positive pole is connected with the colelctor electrode of audion VT6, the leakage of polar capacitor C14, the P pole of minus earth and field effect transistor MOS3
Diode D11, the P pole that pole is connected, N pole is connected with the negative pole of polar capacitor C14 is connected with the colelctor electrode of audion VT6
Connect, Zener diode D12 that N pole positive pole with polar capacitor C11 after resistance R23 is connected, and one end and voltage stabilizing two pole
The N pole of pipe D12 is connected, the resistance R28 of other end ground connection composition；The negative pole of described polar capacitor C10 is also with diode D10's
P pole is connected；The colelctor electrode of described audion VT5 is also connected with the grid of field effect transistor MOS3, its base stage is also electric with polarity
The positive pole holding C13 is connected；The emitter stage of described audion VT6 is also connected with the grid of field effect transistor MOS2；Described voltage stabilizing
The N pole of diode D12 is also connected with inverse-excitation type change-over circuit.
Described inverse-excitation type change-over circuit is connected with the colelctor electrode of audion VT1 by audion VT1, audion VT2, negative pole
Connect, polar capacitor C3, P pole that positive pole is connected with the ON/OF pin of control chip U2 after resistance R4 is with polar capacitor C3's
The diode D2 that positive pole is connected, N pole is connected with the colelctor electrode of audion VT1, positive pole after resistance R3 with the P of diode D2
Pole is connected, the polar capacitor C2 of minus earth, and one end is connected with the positive pole of polar capacitor C2, the other end and audion VT2
The inductance L1 that is connected of colelctor electrode, positive pole colelctor electrode with audion VT2 after resistance R6 is connected, negative pole is after resistance R8
Polar capacitor C5, the N pole being connected with the emitter stage of audion VT2 base stage with audion VT1 after adjustable resistance R5 is connected
Connect, diode D3 that P negative pole with polar capacitor C5 after resistance R7 is connected, negative pole is connected with the emitter stage of audion VT1
Connect, polar capacitor C4 that positive pole is connected with the base stage of audion VT2, one end is connected with the negative pole of polar capacitor C4, another
The resistance R9 that is connected with the positive pole of polar capacitor C4 of end, and P pole is connected with the negative pole of polar capacitor C5, N pole is through adjustable
The diode D4 composition that after resistance R10, emitter stage with audion VT1 is connected；The N pole of described diode D3 also with audion
The colelctor electrode of VT2 is connected；The adjustable end of described adjustable resistance R10 is connected with the N pole of Zener diode D12；Described two poles
The N pole of pipe D4 be connected with the GND pin of control chip U2 after ground connection.
Described high impedance voltage output circuit is by field effect transistor MOS1, audion VT3, audion VT4, positive pole and transformator
The polarity that the non-same polarity of T2 secondary inductance coil is connected, negative pole emitter stage with audion VT3 after resistance R14 is connected
Electric capacity C7, P pole negative pole with polar capacitor C7 after resistance R13 is connected, N pole is connected with the emitter stage of audion VT3
Diode D6, P pole is connected with the negative pole of polar capacitor C7, N pole base stage with audion VT3 after resistance R16 is connected
Diode D7, positive pole is connected with the Same Name of Ends of transformator T2 secondary inductance coil, the drain electrode phase of negative pole and field effect transistor MOS1
The polar capacitor C8 of ground connection after connection, positive pole emitter stage with audion VT3 after resistance R15 is connected, negative pole is through resistance R17
The polar capacitor C9 that colelctor electrode with audion VT3 is connected afterwards, one end is connected with the negative pole of polar capacitor C9, the other end with
The adjustable resistance R18 that the emitter stage of audion VT4 is connected, and P pole base stage with audion VT4 after resistance R19 is connected
Connect, diode D8 that N pole is connected with the grid of field effect transistor MOS1 after inductance L2 composition；The grid of described field effect transistor MOS1
Pole also has the colelctor electrode of audion VT4 to be connected, its source electrode is connected with the colelctor electrode of audion VT3；The N of described diode D8
The grid of pole and field effect transistor MOS1 is collectively forming the outfan of high impedance voltage output circuit.
For the practical effect of the present invention, described process chip U2 the most preferentially have employed the integrated chip of MAX5035
Realize.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) current loss that the present invention can effectively reduce the conduction loss of electric current and circuit is caused, and the present invention
Pulse-width can also be adjusted, can effectively avoid the magnetic intensity of the magnet assembly of the present invention that saturation occurs, from
And ensure that the present invention can effectively reduce self loss to electric current, can effectively improve load capacity of the present invention, well
Meet the requirement of people.
(2) harmonic wave in input voltage can be eliminated or suppress by the present invention, and can be to wave produced by the present invention self
Energising pressure and wave galvanization suppress, thus improve the present invention and export the stability of electric current.
(3) the strong electromagnetic electric wave in circuit can be eliminated or suppress by the present invention, makes the current waveform in circuit
Held stationary, can effectively reduce the current loss in circuit, thus improve the load capacity of the present invention.
(4) unusual fluctuations of output electric current can be suppressed by the present invention, makes the intensity of output electric current keep stable, thus
Improve the present invention and export the stability of electric current.
(5) the process chip U2 of the present invention the most preferentially have employed the integrated chip of MAX5035 and realizes, this chip and periphery electricity
Road combines, and can effectively guarantee that the present invention reduces self reliability to current loss.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is the electrical block diagram of the electromagnetic interference filter circuit of the present invention.
Fig. 3 is the electrical block diagram of the ripple peak restrained circuit of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to
This.
Embodiment
As it is shown in figure 1, the present invention is mainly by control chip U2, transformator T1, transformator T2, diode rectifier U1, electricity
Resistance R1, resistance R2, resistance R11, resistance R12, switch S, polar capacitor C1, polar capacitor C6, Zener diode D1, diode
D5, ripple peak restrained circuit, electromagnetic interference filter circuit, inverse-excitation type change-over circuit, and high impedance voltage output circuit group
Become.
During connection, the P pole of Zener diode D1 cathode output end with diode rectifier U1 after resistance R1 is connected,
N pole is connected with the VIN pin of control chip U2.The positive pole of polar capacitor C1 is connected with the positive pole of diode rectifier U1,
Negative pole be connected with the cathode output end of diode rectifier U1 after ground connection.The positive pole phase of one end of resistance R2 and polar capacitor C1
Connecting, the other end is connected with the negative pole of polar capacitor C1.
Meanwhile, switch S is serially connected in one of them input and the transformator T1 secondary inductance coil of diode rectifier U1
Same Name of Ends between.The Same Name of Ends of limit former with transformator T2, the N pole inductance coil of diode D5 is connected, and P pole is after resistance R11
It is connected with the VOUT pin of control chip U2.The positive pole of polar capacitor C6 P with diode D5 after resistance R12 is extremely connected
Connect, minus earth.Ripple peak restrained circuit is serially connected in the cathode output end of diode rectifier U1 and the VC of control chip U2
Pin positive pole.Inverse-excitation type change-over circuit is connected with ON/OF pin and the GND pin of control chip U2 respectively.Electromagnetic interference is filtered
Wave circuit is serially connected between the FB pin of control chip U2 and inverse-excitation type change-over circuit.High impedance voltage output circuit respectively with change
The Same Name of Ends of depressor T2 secondary inductance coil is connected with non-same polarity.
The non-same polarity ground connection of the former limit inductance coil of described transformator T2；The LX pin of described control chip U2 and BST
Pin is connected；The non-same polarity phase of another input of described diode rectifier U1 and transformator T1 secondary inductance coil
Connect.During enforcement, the Same Name of Ends of described transformator T1 former limit inductance coil and non-same polarity are collectively forming the input of the present invention
End is also connected with civil power.For the practical effect of the present invention, described process chip U2 the most preferentially have employed MAX5035
Integrated chip realizes.
Further, described inverse-excitation type change-over circuit is by audion VT1, audion VT2, resistance R3, resistance R4, adjustable electric
Resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, adjustable resistance R10, polar capacitor C2, polar capacitor C3, polar capacitor
C4, polar capacitor C5, inductance L1, diode D2, diode D3, and diode D4 form.
During connection, the negative pole of polar capacitor C3 is connected with the colelctor electrode of audion VT1, positive pole after resistance R4 with control
The ON/OF pin of chip U2 is connected.The P pole of diode D2 is connected with the positive pole of polar capacitor C3, N pole and audion VT1
Colelctor electrode be connected.The positive pole of polar capacitor C2 P pole with diode D2 after resistance R3 is connected, minus earth.Inductance
One end of L1 is connected with the positive pole of polar capacitor C2, and the other end is connected with the colelctor electrode of audion VT2.
Wherein, the positive pole of polar capacitor C5 colelctor electrode with audion VT2 after resistance R6 is connected, and negative pole is through resistance R8
Emitter stage with audion VT2 is connected afterwards.The N pole of diode D3 base stage with audion VT1 after adjustable resistance R5 is connected
Connecing, P negative pole with polar capacitor C5 after resistance R7 is connected.
Meanwhile, the negative pole of polar capacitor C4 is connected with the emitter stage of audion VT1, positive pole and the base stage of audion VT2
It is connected.One end of resistance R9 is connected with the negative pole of polar capacitor C4, and the other end is connected with the positive pole of polar capacitor C4.Two
The P pole of pole pipe D4 is connected with the negative pole of polar capacitor C5, and N pole emitter stage with audion VT1 after adjustable resistance R10 is connected
Connect.
The N pole of described diode D3 also colelctor electrode with audion VT2 is connected；The adjustable end of described adjustable resistance R10
It is connected with the N pole of Zener diode D12；The N pole of described diode D4 is connected with the GND pin of control chip U2 and is followed by
Ground.
Further, described high impedance voltage output circuit by field effect transistor MOS1, audion VT3, audion VT4,
Resistance R13, resistance R14, resistance R15, resistance R16, resistance R17, adjustable resistance R18, resistance R19, inductance L2, polar capacitor
C7, polar capacitor C8, polar capacitor C9, diode D6, diode D7, and diode D8 form.
During connection, the positive pole of polar capacitor C7 is connected with the non-same polarity of transformator T2 secondary inductance coil, negative pole warp
After resistance R14, the emitter stage with audion VT3 is connected.The P pole of diode D6 after resistance R13 with the negative pole of polar capacitor C7
Being connected, N pole is connected with the emitter stage of audion VT3.The P pole of diode D7 is connected with the negative pole of polar capacitor C7, N pole
After resistance R16, the base stage with audion VT3 is connected.The positive pole of polar capacitor C8 is same with transformator T2 secondary inductance coil
Name end be connected, negative pole be connected with the drain electrode of field effect transistor MOS1 after ground connection.
Meanwhile, the positive pole of polar capacitor C9 emitter stage with audion VT3 after resistance R15 is connected, and negative pole is through resistance
After R17, the colelctor electrode with audion VT3 is connected.One end of adjustable resistance R18 is connected with the negative pole of polar capacitor C9, another
End is connected with the emitter stage of audion VT4.The P pole of diode D8 base stage with audion VT4 after resistance R19 is connected, N
Pole grid with field effect transistor MOS1 after inductance L2 is connected.
The grid of described field effect transistor MOS1 also has the colelctor electrode of audion VT4 to be connected, and its source electrode is with audion VT3's
Colelctor electrode is connected；The N pole of described diode D8 and the grid of field effect transistor MOS1 are collectively forming high impedance voltage output circuit
Outfan.During enforcement, the outfan of this high impedance voltage output circuit is then connected with electronic product.
As in figure 2 it is shown, described electromagnetic interference filter circuit is by field effect transistor MOS2, field effect transistor MOS3, audion VT5,
Audion VT6, resistance R20, resistance R21, resistance R22, resistance R23, resistance R24, adjustable resistance R25, resistance R26, resistance
R27, resistance R28, inductance coil DL, polar capacitor C10, polar capacitor C11, polar capacitor C12, polar capacitor C13, polarity electricity
Hold C14, diode D9, diode D10, diode D11, and Zener diode D12 composition.
During connection, the drain electrode with field effect transistor MOS2 after inductance coil DL of the negative pole of polar capacitor C10 is connected, positive pole
It is connected with the FB pin of control chip U2.The negative pole of polar capacitor C11 after resistance R20 with the negative pole phase of polar capacitor C10
Connecting, positive pole drain electrode with field effect transistor MOS2 after resistance R21 is connected.The N pole of diode D9 after resistance R22 with polarity
The negative pole of electric capacity C10 is connected, and P pole emitter stage with audion VT5 after resistance R26 is connected.The positive pole of polar capacitor C12
After resistance R24, the P pole with diode D9 is connected, and negative pole base stage with audion VT6 after adjustable resistance R25 is connected.
Meanwhile, the P pole of diode D10 is connected with the negative pole of polar capacitor C12, N pole and the grid of field effect transistor MOS3
It is connected.The negative pole of polar capacitor C13 be connected with the emitter stage of audion VT5 after ground connection, positive pole after resistance R27 with field imitate
Should the source electrode of pipe MOS3 be connected.The positive pole of polar capacitor C14 is connected with the colelctor electrode of audion VT6, minus earth.Two poles
The P pole of pipe D11 is connected with the drain electrode of field effect transistor MOS3, and N pole is connected with the negative pole of polar capacitor C14.Zener diode
The P pole of D12 is connected with the colelctor electrode of audion VT6, and N pole positive pole with polar capacitor C11 after resistance R23 is connected.Electricity
One end of resistance R28 is connected with the N pole of Zener diode D12, other end ground connection.
The negative pole of described polar capacitor C10 is also connected with the P pole of diode D10；The colelctor electrode of described audion VT5 is also
Being connected with the grid of field effect transistor MOS3, its base stage also positive pole with polar capacitor C13 is connected；Described audion VT6's
Emitter stage is also connected with the grid of field effect transistor MOS2；The N pole of described Zener diode D12 also with inverse-excitation type change-over circuit phase
Connect.
As it is shown on figure 3, described ripple peak restrained electricity routing amplifier P, audion VT7, audion VT8, audion
VT9, resistance R29, resistance R30, resistance R31, resistance R32, adjustable resistance R33, resistance R34, resistance R35, resistance R36, resistance
R37, adjustable resistance R38, critesistor RT, inductance L3, polar capacitor C15, polar capacitor C16, polar capacitor C17, polarity electricity
Hold C18, polar capacitor C19, diode D13, diode D14, and diode D15 composition.
During connection, the N pole of diode D14 positive pole with amplifier P after resistance R32 is connected, P pole and diode rectification
The cathode output end of device U1 is connected.The negative pole of polar capacitor C15 is connected with the emitter stage of audion VT7, and positive pole is through temperature-sensitive
After resistance RT, the N pole with diode D14 is connected.The P pole of diode D13 after resistance R29 with the colelctor electrode phase of audion VT7
Connecting, N pole outfan with amplifier P after resistance R31 is connected.
Wherein, the negative pole of polar capacitor C16 is connected with the base stage of audion VT7, positive pole after resistance R30 with diode
The N pole of D13 is connected.The P pole of diode D15 is connected with the emitter stage of audion VT9, N pole ground connection.Polar capacitor C17's
Positive pole negative pole with amplifier P after adjustable resistance R33 is connected, and negative pole N with diode D15 after resistance R36 is extremely connected
Connect.The positive pole of polar capacitor C18 is connected with the base stage of audion VT9, negative pole after resistance R34 with adjustable resistance R33 can
Tune end is connected.
Meanwhile, one end of adjustable resistance R38 is connected with the colelctor electrode of audion VT9, the other end and the collection of audion VT8
Electrode be connected after ground connection.One end of inductance L3 is connected with the emitter stage of audion VT8, the other end and the negative pole of amplifier P
It is connected.The positive pole of polar capacitor C19 base stage with audion VT8 after resistance R37 is connected, negative pole after resistance R35 with
The outfan of amplifier P is connected.The base stage of described audion VT7 also positive pole with amplifier P is connected；Described polar capacitor
The negative pole of C19 be also connected with the VC pin of control chip U2 after ground connection.
During operation, the inverse-excitation type change-over circuit of the present invention can effectively reduce the conduction loss of electric current and circuit caused
Current loss, and this circuit can also pulse-width be adjusted, and can effectively avoid the magnetic of the magnet assembly of the present invention
There is saturation in intensity, ensures that the present invention can effectively reduce self loss to electric current, is effectively improved the present invention
Load capacity.Meanwhile, the unusual fluctuations of output electric current can be suppressed by the high impedance voltage output circuit of the present invention, makes defeated
The intensity going out electric current keeps stable；Wherein, harmonic wave in input voltage can be eliminated by the ripple peak restrained circuit of the present invention
Or suppression, and wave energising pressure produced by the present invention self and wave galvanization can be suppressed.Thus it is defeated to improve the present invention
Go out the stability of electric current, well meet the requirement of people.
Meanwhile, the strong electromagnetic electric wave in circuit can be eliminated or press down by the electromagnetic interference filter circuit of the present invention
System, makes the current waveform held stationary in circuit, can effectively reduce the current loss in circuit, thus improve the present invention's
Load capacity.The process chip U2 of the present invention the most preferentially uses has overvoltage protection, overcurrent protection and steady performance
The integrated chip of MAX5035 realizes, and this chip combines with peripheral circuit, can effectively guarantee that the present invention reduces self to electric current
The reliability of loss.
As it has been described above, just can well realize the present invention.
Claims (6)
1. the EMI Filtering portable Switching Power Supply of type low-loss of a ripple suppression, it is characterised in that main by controlling
Chip U2, transformator T1, transformator T2, diode rectifier U1, P pole is defeated with the positive pole of diode rectifier U1 after resistance R1
Go out the Zener diode D1 that end is connected, N pole is connected, positive pole and diode rectifier U1 with the VIN pin of control chip U2
Positive pole be connected, negative pole be connected with the cathode output end of diode rectifier U1 after the polar capacitor C1 of ground connection, one end with
The resistance R2 that the positive pole of polar capacitor C1 is connected, the other end is connected with the negative pole of polar capacitor C1, is serially connected in diode whole
Switch S, N pole between one of them input and the Same Name of Ends of transformator T1 secondary inductance coil of stream device U1 and transformator T2
The diode that the Same Name of Ends of former limit inductance coil is connected, P pole is connected with the VOUT pin of control chip U2 after resistance R11
D5, positive pole P pole with diode D5 after resistance R12 is connected, the polar capacitor C6 of minus earth, is serially connected in diode rectification
The ripple peak restrained circuit of the VC pin positive pole of the cathode output end of device U1 and control chip U2, respectively with control chip U2's
The inverse-excitation type change-over circuit that ON/OF pin is connected with GND pin, the FB pin being serially connected in control chip U2 is changed with inverse-excitation type
Electromagnetic interference filter circuit between circuit, and respectively with Same Name of Ends and the non-same polarity phase of transformator T2 secondary inductance coil
The high impedance voltage output circuit composition connected；The non-same polarity ground connection of the former limit inductance coil of described transformator T2；Described control
The LX pin of coremaking sheet U2 is connected with BST pin；Another input of described diode rectifier U1 is secondary with transformator T1
The non-same polarity of limit inductance coil is connected.
The EMI Filtering portable Switching Power Supply of type low-loss of a kind of ripple the most according to claim 1 suppression, its
Being characterised by, described ripple peak restrained electricity routing amplifier P, audion VT7, audion VT8, audion VT9, N pole is through electricity
Be connected with the positive pole of amplifier P after resistance R32, diode that P pole is connected with the cathode output end of diode rectifier U1
D14, negative pole is connected with the emitter stage of audion VT7, positive pole is connected with the N pole of diode D14 after critesistor RT
Polar capacitor C15, P pole colelctor electrode with audion VT7 after resistance R29 is connected, N pole after resistance R31 with amplifier P's
The diode D13 that outfan is connected, negative pole is connected with the base stage of audion VT7, positive pole after resistance R30 with diode
Polar capacitor C16, the P pole that the N pole of D13 is connected is connected with the emitter stage of audion VT9, the diode D15 of N pole ground connection,
Positive pole negative pole with amplifier P after adjustable resistance R33 is connected, negative pole N with diode D15 after resistance R36 is extremely connected
The polar capacitor C17 connect, positive pole is connected with the base stage of audion VT9, negative pole after resistance R34 with adjustable resistance R33 can
Adjusting the polar capacitor C18 that is connected of end, one end is connected with the colelctor electrode of audion VT9, the other end and the current collection of audion VT8
Pole be connected after the adjustable resistance R38 of ground connection, one end is connected with the emitter stage of audion VT8, the other end is negative with amplifier P's
The inductance L3 that pole is connected, and positive pole base stage with audion VT8 after resistance R37 is connected, negative pole after resistance R35 with
The polar capacitor C19 composition that the outfan of amplifier P is connected；The base stage of described audion VT7 also with the positive pole phase of amplifier P
Connect；The negative pole of described polar capacitor C19 be also connected with the VC pin of control chip U2 after ground connection.
The EMI Filtering portable Switching Power Supply of type low-loss of a kind of ripple the most according to claim 2 suppression, its
Be characterised by, described electromagnetic interference filter circuit by field effect transistor MOS2, field effect transistor MOS3, audion VT5, audion VT6,
Negative pole drain electrode with field effect transistor MOS2 after inductance coil DL is connected, positive pole is connected with the FB pin of control chip U2
Polar capacitor C10, negative pole negative pole with polar capacitor C10 after resistance R20 is connected, positive pole after resistance R21 with field effect
Polar capacitor C11, the N pole that the drain electrode of pipe MOS2 is connected negative pole with polar capacitor C10 after resistance R22 is connected, P pole warp
The diode D9 that after resistance R26, emitter stage with audion VT5 is connected, positive pole after resistance R24 with the P pole phase of diode D9
Connect, polar capacitor C12, P pole that negative pole base stage with audion VT6 after adjustable resistance R25 is connected and polar capacitor C12
The diode D10 that negative pole is connected, N pole is connected with the grid of field effect transistor MOS3, the emitter stage of negative pole and audion VT5
The polar capacitor C13 that after being connected, ground connection, positive pole are connected with the source electrode of field effect transistor MOS3 after resistance R27, positive pole and three
The colelctor electrode of pole pipe VT6 is connected, polar capacitor C14, the P pole of minus earth is connected with the drain electrode of field effect transistor MOS3, N pole
Diode D11, the P pole being connected with the negative pole of polar capacitor C14 is connected with the colelctor electrode of audion VT6, N pole is through resistance
The Zener diode D12 that after R23, positive pole with polar capacitor C11 is connected, and the N pole phase of one end and Zener diode D12
Connect, the resistance R28 of other end ground connection forms；The negative pole of described polar capacitor C10 is also connected with the P pole of diode D10；Institute
The colelctor electrode stating audion VT5 is also connected with the grid of field effect transistor MOS3, its base stage also with the positive pole phase of polar capacitor C13
Connect；The emitter stage of described audion VT6 is also connected with the grid of field effect transistor MOS2；The N pole of described Zener diode D12
Also it is connected with inverse-excitation type change-over circuit.
The EMI Filtering portable Switching Power Supply of type low-loss of a kind of ripple the most according to claim 3 suppression, its
Being characterised by, described inverse-excitation type change-over circuit is connected with the colelctor electrode of audion VT1 by audion VT1, audion VT2, negative pole
Connect, polar capacitor C3, P pole that positive pole is connected with the ON/OF pin of control chip U2 after resistance R4 is with polar capacitor C3's
The diode D2 that positive pole is connected, N pole is connected with the colelctor electrode of audion VT1, positive pole after resistance R3 with the P of diode D2
Pole is connected, the polar capacitor C2 of minus earth, and one end is connected with the positive pole of polar capacitor C2, the other end and audion VT2
The inductance L1 that is connected of colelctor electrode, positive pole colelctor electrode with audion VT2 after resistance R6 is connected, negative pole is after resistance R8
Polar capacitor C5, the N pole being connected with the emitter stage of audion VT2 base stage with audion VT1 after adjustable resistance R5 is connected
Connect, diode D3 that P negative pole with polar capacitor C5 after resistance R7 is connected, negative pole is connected with the emitter stage of audion VT1
Connect, polar capacitor C4 that positive pole is connected with the base stage of audion VT2, one end is connected with the negative pole of polar capacitor C4, another
The resistance R9 that is connected with the positive pole of polar capacitor C4 of end, and P pole is connected with the negative pole of polar capacitor C5, N pole is through adjustable
The diode D4 composition that after resistance R10, emitter stage with audion VT1 is connected；The N pole of described diode D3 also with audion
The colelctor electrode of VT2 is connected；The adjustable end of described adjustable resistance R10 is connected with the N pole of Zener diode D12；Described two poles
The N pole of pipe D4 be connected with the GND pin of control chip U2 after ground connection.
The EMI Filtering portable Switching Power Supply of type low-loss of a kind of ripple the most according to claim 4 suppression, its
Being characterised by, described high impedance voltage output circuit is by field effect transistor MOS1, audion VT3, audion VT4, positive pole and transformation
The pole that the non-same polarity of device T2 secondary inductance coil is connected, negative pole emitter stage with audion VT3 after resistance R14 is connected
Property electric capacity C7, P pole negative pole with polar capacitor C7 after resistance R13 is connected, N pole is connected with the emitter stage of audion VT3
Diode D6, P pole be connected with the negative pole of polar capacitor C7, N pole base stage with audion VT3 after resistance R16 is connected
Diode D7, positive pole is connected with the Same Name of Ends of transformator T2 secondary inductance coil, the drain electrode of negative pole and field effect transistor MOS1
The polar capacitor C8 of ground connection after being connected, positive pole emitter stage with audion VT3 after resistance R15 is connected, negative pole is through resistance
The polar capacitor C9 that after R17, colelctor electrode with audion VT3 is connected, one end is connected with the negative pole of polar capacitor C9, another
The adjustable resistance R18 that is connected with the emitter stage of audion VT4 of end, and P pole after resistance R19 with the base stage of audion VT4
Be connected, diode D8 that N pole is connected with the grid of field effect transistor MOS1 after inductance L2 composition；Described field effect transistor MOS1
Grid also have the colelctor electrode of audion VT4 to be connected, its source electrode is connected with the colelctor electrode of audion VT3；Described diode
The N pole of D8 and the grid of field effect transistor MOS1 are collectively forming the outfan of high impedance voltage output circuit.
The EMI Filtering portable Switching Power Supply of type low-loss of a kind of ripple the most according to claim 5 suppression, its
Being characterised by, described control chip U2 is the integrated chip of MAX5035.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610643377.8A CN106059345A (en) | 2016-08-08 | 2016-08-08 | Electromagnetic-interference filtering-type low-loss portable switch power supply of ripple suppression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610643377.8A CN106059345A (en) | 2016-08-08 | 2016-08-08 | Electromagnetic-interference filtering-type low-loss portable switch power supply of ripple suppression |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106059345A true CN106059345A (en) | 2016-10-26 |
Family
ID=57480649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610643377.8A Pending CN106059345A (en) | 2016-08-08 | 2016-08-08 | Electromagnetic-interference filtering-type low-loss portable switch power supply of ripple suppression |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106059345A (en) |
-
2016
- 2016-08-08 CN CN201610643377.8A patent/CN106059345A/en active Pending
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