CN106253685A - A kind of portable Switching Power Supply of low-loss - Google Patents
A kind of portable Switching Power Supply of low-loss Download PDFInfo
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- CN106253685A CN106253685A CN201610644762.4A CN201610644762A CN106253685A CN 106253685 A CN106253685 A CN 106253685A CN 201610644762 A CN201610644762 A CN 201610644762A CN 106253685 A CN106253685 A CN 106253685A
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- polar capacitor
- diode
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Classifications
-
- 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
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33561—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having more than one ouput with independent control
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
- H02M3/33592—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer having a synchronous rectifier circuit or a synchronous freewheeling circuit at the secondary side of an isolation transformer
-
- 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
- H02M1/0054—Transistor switching losses
-
- 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
- H02M1/325—Means for protecting converters other than automatic disconnection with means for allowing continuous operation despite a fault, i.e. fault tolerant converters
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a kind of portable Switching Power Supply of low-loss, it is characterized in that, mainly by control chip U2, transformator T1, transformator T2, diode rectifier U1, Zener diode D1, polar capacitor C1, resistance R2, the compositions such as diode D5, the inverse-excitation type change-over circuit being connected with the ON/OF pin of control chip U2 and FB pin and GND pin respectively, and the high impedance voltage output circuit being connected with Same Name of Ends and the non-same polarity of transformator T2 secondary inductance coil respectively.The current loss that the present invention can effectively reduce the conduction loss of electric current and circuit is caused, and the present invention can also pulse-width be adjusted, there is saturation in the magnetic intensity that can effectively avoid the magnet assembly of the present invention, ensure that the present invention can effectively reduce self loss to electric current, can effectively improve outputting current steadily of the present invention.
Description
Technical field
The present invention relates to field of aluminum electrolysis, specifically refer to a kind of portable Switching Power Supply of low-loss.
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 a kind of portable Switching Power Supply of low-loss.
The purpose of the present invention realizes by following technical scheme: a kind of portable Switching Power Supply of low-loss, mainly by controlling core
Sheet U2, transformator T1, transformator T2, diode rectifier U1, P pole exports with the positive pole of diode rectifier U1 after resistance R1
The Zener diode D1 that end is connected, N pole is connected with the VIN pin of control chip U2, positive pole is with diode rectifier U1's
The polar capacitor C1 of ground connection, one end and pole after positive pole is connected, negative pole is connected with the cathode output end of diode rectifier U1
The resistance R2 that positive pole is connected, the other end is connected with the negative pole of polar capacitor C1 of property electric capacity C1, is serially connected in diode rectification
Switch S, N pole between one of them input and the Same Name of Ends of transformator T1 secondary inductance coil of device U1 is former with transformator T2
The diode that the Same Name of Ends of 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, respectively with control chip U2
The inverse-excitation type change-over circuit that is connected with FB pin and GND pin of ON/OF pin, and respectively with transformator T2 secondary electricity
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 VC pin of described control chip U2 is connected with the cathode output end of diode rectifier U1,
Its LX pin is connected with BST pin；Another input of described diode rectifier U1 and transformator T1 secondary inductance line
The non-same polarity of circle is connected.
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 VT1 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 FB pin of control chip U2；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 MOS, 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, negative pole is connected with the drain electrode of field effect transistor MOS
Meeting the polar capacitor C8 of rear ground connection, positive pole emitter stage with audion VT3 after resistance R15 is connected, negative pole is after resistance R17
The polar capacitor C9 being connected with the colelctor electrode of audion VT3, one end is connected with the negative pole of polar capacitor C9, the other end and three
The adjustable resistance R18 that the emitter stage of pole pipe VT4 is connected, and P pole base stage with audion VT4 after resistance R19 is connected,
The diode D8 composition that N pole is connected with the grid of field effect transistor MOS after inductance L2；The grid of described field effect transistor MOS is also
The colelctor electrode having audion VT4 is connected, its source electrode is connected with the colelctor electrode of audion VT3；The N pole of described diode D8 with
The grid of field effect transistor MOS 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) 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.
(3) 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.
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, inverse-excitation type change-over circuit, and high impedance voltage output circuit composition.
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.Inverse-excitation type change-over circuit is connected with the ON/OF pin of control chip U2 and FB pin and GND pin respectively
Connect.High impedance voltage output circuit is connected with Same Name of Ends and the non-same polarity of transformator T2 secondary inductance coil respectively.
The non-same polarity ground connection of the former limit inductance coil of described transformator T2；The VC pin of described control chip U2 and two poles
The cathode output end of pipe commutator U1 is connected, and its LX pin is connected with BST pin；Another of described diode rectifier U1
Individual input is connected with the non-same polarity of transformator T1 secondary inductance coil.During enforcement, described transformator T1 former limit inductance
The Same Name of Ends of coil is collectively forming the input of the present invention and is connected with civil power with non-same polarity.Actual for the present invention makes
By effect, described process chip U2 the most preferentially have employed the integrated chip of MAX5035 and 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 VT1 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 FB pin of control chip U2；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 is by field effect transistor MOS, audion VT3, audion VT4, electricity
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 MOS 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 MOS after inductance L2 is connected.
The grid of described field effect transistor MOS 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 MOS 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.
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, thus improves the present invention and export the stability of electric current, well meets the requirement of people.
Meanwhile, the process chip U2 of the present invention the most preferentially uses that to have overvoltage protection, overcurrent protection and stable performance etc. excellent
The integrated chip of MAX5035 of point realizes, and this chip combines with peripheral circuit, can effectively guarantee that the present invention reduces self right
The reliability of current loss.
As it has been described above, just can well realize the present invention.
Claims (4)
1. the portable Switching Power Supply of low-loss, it is characterised in that main by control chip U2, transformator T1, transformator T2,
Diode rectifier U1, P pole cathode output end with diode rectifier U1 after resistance R1 is connected, N pole and control chip
The Zener diode D1 that the VIN pin of U2 is connected, positive pole is connected with the positive pole of diode rectifier U1, negative pole and diode
The cathode output end of commutator U1 be connected after the polar capacitor C1 of ground connection, one end is connected with the positive pole of polar capacitor C1, separately
The resistance R2 that one end is connected with the negative pole of polar capacitor C1, is serially connected in one of them input and the change of diode rectifier U1
The Same Name of Ends of limit former with transformator T2, switch S, the N pole inductance coil between the Same Name of Ends of depressor T1 secondary inductance coil is connected
Connect, diode D5 that P pole is connected with the VOUT pin of control chip U2 after resistance R11, positive pole after resistance R12 with two poles
The P pole of pipe D5 is connected, the polar capacitor C6 of minus earth, respectively with the ON/OF pin of control chip U2 and FB pin and
The inverse-excitation type change-over circuit that GND pin is connected, and respectively with the Same Name of Ends of transformator T2 secondary inductance coil and non-of the same name
The high impedance voltage output circuit composition that end is connected；The non-same polarity ground connection of the former limit inductance coil of described transformator T2；Institute
The cathode output end of the VC pin and diode rectifier U1 of stating control chip U2 is connected, its LX pin is connected with BST pin
Connect；Another input of described diode rectifier U1 is connected with the non-same polarity of transformator T1 secondary inductance coil.
A kind of portable Switching Power Supply of low-loss the most according to claim 1, it is characterised in that described inverse-excitation type conversion electricity
Route audion VT1, audion VT2, negative pole is connected with the colelctor electrode of audion VT1, positive pole after resistance R4 with control core
Polar capacitor C3, the P pole that the ON/OF pin of sheet U2 is connected is connected with the positive pole of polar capacitor C3, N pole and audion VT1
The diode D2 that is connected of colelctor electrode, positive pole P pole with diode D2 after resistance R3 is connected, the polarity electricity of minus earth
Hold C2, the inductance L1 that one end is connected, the other end is connected with the colelctor electrode of audion VT2 with the positive pole of polar capacitor C2, just
Pole colelctor electrode with audion VT2 after resistance R6 is connected, negative pole emitter stage with audion VT1 after resistance R8 is connected
Polar capacitor C5, N pole base stage with audion VT1 after adjustable resistance R5 be connected, P after resistance R7 with polar capacitor C5
The diode D3 that is connected of negative pole, negative pole is connected with the emitter stage of audion VT1, the base stage phase of positive pole and audion VT2
The polar capacitor C4 connected, one end is connected with the negative pole of polar capacitor C4, the other end is connected with the positive pole of polar capacitor C4
Resistance R9, and P pole is connected with the negative pole of polar capacitor C5, N pole after adjustable resistance R10 with the transmitting of audion VT1
The diode D4 composition that pole is connected；The N pole of described diode D3 also colelctor electrode with audion VT2 is connected；Described adjustable
The adjustable end of resistance R10 is connected with the FB pin of control chip U2；The N pole of described diode D4 and the GND of control chip U2
Pin be connected after ground connection.
A kind of portable Switching Power Supply of low-loss the most according to claim 2, it is characterised in that described high impedance voltage is defeated
Go out the circuit non-same polarity by field effect transistor MOS, audion VT3, audion VT4, positive pole and transformator T2 secondary inductance coil
Be connected, polar capacitor C7, P pole that negative pole emitter stage with audion VT3 after resistance R14 is connected after resistance R13 with
Diode D6, the P pole that the negative pole of polar capacitor C7 is connected, N pole is connected with the emitter stage of audion VT3 and polar capacitor C7
The diode D7 that negative pole is connected, N pole base stage with audion VT3 after resistance R16 is connected, positive pole is secondary with transformator T2
The polar capacitor C8 of ground connection, positive pole after the Same Name of Ends of limit inductance coil is connected, negative pole is connected with the drain electrode of field effect transistor MOS
After resistance R15, the emitter stage with audion VT3 is connected, negative pole colelctor electrode with audion VT3 after resistance R17 is connected
Polar capacitor C9, one end is connected with the negative pole of polar capacitor C9, the other end is connected with the emitter stage of audion VT4 can
Adjust resistance R18, and P pole base stage with audion VT4 after resistance R19 is connected, N pole after inductance L2 with field effect transistor
The diode D8 composition that the grid of MOS is connected；The grid of described field effect transistor MOS also has the colelctor electrode of audion VT4 to be connected
Connect, its source electrode is connected with the colelctor electrode of audion VT3；The N pole of described diode D8 and the common shape of grid of field effect transistor MOS
Become the outfan of high impedance voltage output circuit.
A kind of portable Switching Power Supply of low-loss the most according to claim 3, it is characterised in that described control chip U2 is
The integrated chip of MAX5035.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610644762.4A CN106253685A (en) | 2016-08-08 | 2016-08-08 | A kind of portable Switching Power Supply of low-loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610644762.4A CN106253685A (en) | 2016-08-08 | 2016-08-08 | A kind of portable Switching Power Supply of low-loss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106253685A true CN106253685A (en) | 2016-12-21 |
Family
ID=58079272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610644762.4A Pending CN106253685A (en) | 2016-08-08 | 2016-08-08 | A kind of portable Switching Power Supply of low-loss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106253685A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113252126A (en) * | 2021-05-21 | 2021-08-13 | 中国水利水电科学研究院 | Terminal system capable of identifying personal water consumption |
-
2016
- 2016-08-08 CN CN201610644762.4A patent/CN106253685A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113252126A (en) * | 2021-05-21 | 2021-08-13 | 中国水利水电科学研究院 | Terminal system capable of identifying personal water consumption |
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Application publication date: 20161221 |