CN209593259U - A kind of inverse-excitation type DC-DC power source device - Google Patents
A kind of inverse-excitation type DC-DC power source device Download PDFInfo
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- CN209593259U CN209593259U CN201920455822.7U CN201920455822U CN209593259U CN 209593259 U CN209593259 U CN 209593259U CN 201920455822 U CN201920455822 U CN 201920455822U CN 209593259 U CN209593259 U CN 209593259U
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Abstract
The utility model provides a kind of inverse-excitation type DC-DC power source device, belong to power switch technology, the device includes the round cap and circular shell being detachably connected, and the power circuit of internal setting, three mutually independent separate cavities of the recessed formation in the upper surface of shell, it is connected between separate cavities by wire casing, the utility model dispenses power circuit using shielding case, the power circuit that encapsulation is completed, which is put into different cavitys, can be realized shielding, reduce circuit overall output voltage ripple and work noise, the program includes the governor circuit and loop compensation circuit based on LM5032 chip for core, the stability of electric power output voltage can be effectively improved, the stability margin of power module not only can be improved, and the problems such as being able to solve Switching Power Supply output oscillation.
Description
Technical field
The utility model belongs to power switch technology more particularly to a kind of inverse-excitation type DC-DC power source device.
Background technique
DC-DC power source device is a kind of electricity that the electric energy of a voltage value is become to another voltage value in DC circuit
Can device, use microelectric technique, small-sized surface mount integrated circuit and miniature electronic component are assembled integrally and
It constitutes.At this stage, DC-DC power source device is widely used in power electronics, military project, scientific research, industrial control equipment, communication apparatus, instrument instrument
The communications fields such as table, switching equipment, access device, mobile communication, router and Industry Control, automotive electronics, aerospace etc.
Field.
It is more and more widely used along with Switching Power Supply, the performance and job stability for Switching Power Supply require more next
It is higher.In the prior art, the power module of domestic mainstream power supply manufacturer production lacks effective shield shell and loop compensation electricity
Road, lead to problems such as power module exist output oscillation, export it is unstable, especially under high frequency operating condition, power module it is defeated
Acutely, job stability and reliability are to be improved for oscillation out.
Utility model content
The utility model dispenses power circuit using shielding case, and the power circuit that encapsulation is completed is put into different cavitys
Shielding can be realized, reduce circuit overall output voltage ripple and work noise, it is core that the program, which includes based on LM5032 chip,
The governor circuit and loop compensation circuit of the heart, can effectively improve the stability of electric power output voltage, electricity not only can be improved
The stability margin of source module, and it is able to solve the problems such as Switching Power Supply output is vibrated.
In order to achieve the above objectives, the embodiments of the present invention adopt the following technical scheme that
A kind of inverse-excitation type DC-DC power source device, which is characterized in that including the round cap being detachably connected and toroidal shell
The power circuit being arranged inside body and circular shell, in which: the upper surface of circular shell by milling cutter mill out three it is independent every
From chamber: i.e. the first separate cavities, the second separate cavities and third separate cavities offer internal wire casing, the first separate cavities between separate cavities
External wire casing is offered with the side of third separate cavities, the bottom of separate cavities is provided with circuit mounting hole, the side of circular shell
Edge is provided with lid mounting hole；
Power circuit includes the input circuit, transformer circuit and output circuit being electrically connected to each other, and input circuit passes through peace
Dress screw is mounted on inside the first separate cavities, and wired row is externally arranged by external wire casing in input circuit, and transformer circuit passes through
Installation screw is mounted on inside the second separate cavities, and output circuit is mounted on inside third separate cavities by installing screw, output electricity
Wired row is externally arranged by external wire casing in road；
External input terminals pass sequentially through input circuit, transformer circuit connects external output end with output circuit, input electricity
Road is controlled for input filter and metal-oxide-semiconductor, and transformer circuit is used for boost or depressurization, and output circuit is for exporting filtering.
It is further preferential, by multiple screw connections between round cap and circular shell, the first separate cavities, second every
It is the cuboid cavity with fillet from chamber and third separate cavities.
Further preferential, transformer circuit includes two groups of transformers of coaxial arrangement: i.e. the first transformer group and second
Transformer group.
Further preferential, input circuit includes input filter circuit, power switch circuit and governor circuit, in which:
Input filter circuit includes first capacitor, the second capacitor and BUS node, and first capacitor and the second capacitor are both connected to
Between input anode and input cathode, input anode connects the first transformer group primary Same Name of Ends by BUS node；
Governor circuit includes LM5032 chip circuit, LM5032 chip include OUT1 pin, CS1 pin, COMP1 pin,
OUT2 pin, CS2 pin, COMP2 pin, VIN pin and VCC pin；
Power switch circuit includes first switch circuit and second switch circuit；First switch circuit include third capacitor and
First metal-oxide-semiconductor, third capacitance connection is between the first transformer group primary Same Name of Ends and input cathode, the source of the first metal-oxide-semiconductor
Pole connects the first transformer group primary different name end, and the grid of the first metal-oxide-semiconductor is drawn by the OUT1 that second resistance connects governor circuit
The drain electrode of foot, the first metal-oxide-semiconductor connects input cathode by 3rd resistor, and the drain electrode of the first metal-oxide-semiconductor is connected by the 4th resistance
The CS1 pin of governor circuit, CS1 pin connect BUS node by the 5th resistance；Second switch circuit include the 4th capacitor and
Second metal-oxide-semiconductor, the 4th capacitance connection is between the second transformer group primary Same Name of Ends and input cathode, the source of the second metal-oxide-semiconductor
Pole connects the second transformer group primary different name end, and the grid of the second metal-oxide-semiconductor is drawn by the OUT2 that the 6th resistance connects governor circuit
The drain electrode of foot, the second metal-oxide-semiconductor connects input cathode by the 7th resistance, and the drain electrode of the second metal-oxide-semiconductor is connected by the 8th resistance
The CS2 pin of governor circuit, CS2 pin connect BUS node by the 9th resistance.
Further preferential, output circuit includes output filter circuit, in which: output filter circuit includes the first output filter
Wave circuit and the second output filter circuit, the first output filter circuit include first diode, the 5th capacitor, the 6th capacitor,
Ten resistance, the first inductance, VS node and COM node, the anode and cathode of first diode are separately connected the first transformer group time
Grade different name end and VS node, third inductance connect in VS node and output head anode, and the 5th capacitor connects in VS node and COM node
Between, the 6th capacitor and the tenth resistance connect between output head anode and COM node, and COM node connects the first transformer group
Secondary Same Name of Ends；Second output filter circuit includes the second diode, the 7th capacitor, the 8th capacitor, eleventh resistor and second
Inductance, the second transformer group secondary different name end of anode connection of the second diode, the cathode of the second diode connect COM node,
7th capacitor connects between COM node and the second transformer group secondary Same Name of Ends, and the 8th capacitor and eleventh resistor connect in COM
Between node and negative pole of output end, the second inductance is connect between the second transformer group secondary Same Name of Ends and negative pole of output end.
Further preferential, output circuit further includes feed circuit, in which:
Feed circuit includes the first feed circuit and the second feed circuit, and the first feed circuit includes twelfth resistor, the
13 resistance, the 14th resistance, the 15th resistance, the 16th resistance, the 4th diode, the 9th capacitor, the tenth capacitor and first
Photoelectrical coupler, output head anode pass sequentially through twelfth resistor, thirteenth resistor connection COM node, the 14th resistance and the
13 resistor coupled in parallel, the anode connection VS node of the first photoelectrical coupler, the cathode of the first photoelectrical coupler pass through the 15th electricity
The cathode of resistance the 4th diode of connection, the anode connection COM node of the 4th diode, the cathode of the 4th diode pass sequentially through
9th capacitor, thirteenth resistor connect COM node, and the 16th resistance has been sequentially connected in series between COMP1 pin and input cathode
With the tenth capacitor；Second feed circuit includes the 17th resistance, the 18th resistance, the 19th resistance, the 20th resistance, the 20th
One resistance, the 5th diode, the 11st capacitor, the 12nd capacitor and the second photoelectrical coupler, COM node pass sequentially through the 17th
Resistance, the 18th resistance connect negative pole of output end, the 19th resistance and the 18th resistor coupled in parallel, the anode of the second photoelectrical coupler
COM node is connected, the cathode of the first photoelectrical coupler connects the cathode of the 5th diode, the 5th diode by the 20th resistance
Anode connection negative pole of output end, the cathode of the 5th diode pass sequentially through the 11st capacitor, the 18th resistance connection output end
Cathode has been sequentially connected in series the 21st resistance and the 12nd capacitor between COMP2 pin and input cathode.
A kind of inverse-excitation type DC-DC power source device of the utility model has the advantages that
(1) it by circular shell inside division at multiple individual cavities, is connected to, will be encapsulated by cabling channel between each cavity
The circuit of completion, which is put into different cavitys, can be realized shielding, can be connected by winding displacement between power circuit, different units
Between be isolated using baffle, above-mentioned mounting means improves packaging efficiency and shield effectiveness, reach reduce overall output electricity
Emboss the effect of wave.
(2) it is the governor circuit and loop compensation circuit of core based on LM5032 chip by setting, can effectively mentions
The stability of high electric power output voltage reduces ripple in output voltage, and the stability margin of power module not only can be improved, and
And the problems such as being able to solve Switching Power Supply output oscillation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the internal space layout schematic diagram of the utility model；
Fig. 3 is the internal wiring schematic diagram of the utility model；
Fig. 4 is the power circuit connection schematic diagram of the utility model；
Fig. 5 is the utility model feed circuit connection schematic diagram.
In figure, 1- circle cap, 2- circular shell, the first separate cavities of 201-, the second separate cavities of 202-, the isolation of 203- third
Wire casing, the outside 205- wire casing, 206- circuit mounting hole, 207- lid mounting hole, 3- install screw, 4- power supply inside chamber, 204-
Circuit, 401- input circuit, 402- transformer circuit, 403- output circuit, 5- winding displacement.
Specific embodiment
Shown in reference to the accompanying drawings, the utility model is further described:
As shown in Figure 1 to Figure 3, a kind of inverse-excitation type DC-DC power source device, including the round cap 1 and circle being detachably connected
The power circuit 4 being arranged inside shape shell 2 and circular shell 2.
Specifically, the upper surface of circular shell 2 mills out three independent separate cavities by milling cutter: i.e. the first separate cavities 201,
Two separate cavities 202 and third separate cavities 203, offer between separate cavities internal wire casing 204, the first separate cavities 201 and third every
Side from chamber 203 offers external wire casing 205.
For the communication between internal circuit, external wire casing 205 is inputted or is connected for external power supply internal wire casing 204
Load.
As shown in Fig. 2, round cap 1 and circular shell 2 can be aluminum substrate, and separate cavities are to pass through milling machine in this implementation
It being process, the bottom of separate cavities is provided with circuit mounting hole 206, and the edge of circular shell 2 is provided with lid mounting hole 207,
It is connected between round cap 1 and circular shell 2 by multiple screws 3, installation is as can be seen from the figure also equipped on circuit board
Hole, it is therefore an objective to, can be by round cap 1 and the unified fixation of circular shell 2 and PCB plate using screw 3 to simplify installation.From
As can be seen that the first separate cavities 201, the second separate cavities 202 and third separate cavities 203 are that the cuboid with fillet is empty in figure
Chamber, for installing different PCB circuit boards.
It should be noted that this circular shield shell is especially suitable for missile-borne power supply requirement.
As shown in figure 3, power circuit 4 includes the input circuit 401 being electrically connected to each other, transformer circuit 402 and output electricity
Road 403, input circuit 401 are mounted on inside the first separate cavities 201 by installing screw 3, and input circuit 401 passes through external wire casing
205 are externally arranged wired row 5, and for line row 5 for connecting external power supply, transformer circuit 402 is mounted on the by installing screw 3
Inside two separate cavities 202, output circuit 403 is mounted on inside third separate cavities 203 by installing screw 3, output circuit 403
Wired row 5 is externally set by external wire casing 205, line row 5 is for connecting load circuit；External input terminals pass sequentially through defeated
Enter circuit 401, transformer circuit 402 and output circuit 403 and connect external output end, input circuit 401 for input filter and
Metal-oxide-semiconductor control, transformer circuit 402 are used for boost or depressurization, and output circuit 403 is for exporting filtering.
Specifically, after input circuit 401, transformer circuit 402 and output circuit 403 can first pass through encapsulating, then install
Into separate cavities, can be connected by winding displacement 5 between input circuit 401, transformer circuit 402 and output circuit 403.Meanwhile
Input circuit 401, transformer circuit 402 and output circuit 403 first can be installed into isolation cabin, after winding displacement connects, then into
Row entirety encapsulating.
It should be noted that external wire casing 205 and internal wire casing 204 need filled rubber circle or foaming agent etc. after wiring
It is sealed.
As shown in figure 4, transformer circuit 402 includes two groups of transformers of coaxial arrangement: i.e. the first transformer group and second
Transformer group.In figure, input circuit 401 includes input filter circuit, power switch circuit and governor circuit, in which: input filter
Wave circuit includes first capacitor, the second capacitor and BUS node, first capacitor and the second capacitor be both connected to input anode with it is defeated
Enter to hold between cathode, input anode connects the first transformer group primary Same Name of Ends by BUS node；Governor circuit includes
LM5032 chip circuit, LM5032 chip include OUT1 pin, CS1 pin, COMP1 pin, OUT2 pin, CS2 pin,
COMP2 pin, VIN pin and VCC pin；Power switch circuit includes first switch circuit and second switch circuit；First opens
Powered-down road includes third capacitor and the first metal-oxide-semiconductor, and third capacitance connection is negative in the first transformer group primary Same Name of Ends and input terminal
Between pole, the source electrode of the first metal-oxide-semiconductor connects the first transformer group primary different name end, and the grid of the first metal-oxide-semiconductor passes through second resistance
The OUT1 pin of governor circuit is connected, the drain electrode of the first metal-oxide-semiconductor connects input cathode, the first MOS pipe by 3rd resistor
Drain electrode by the 4th resistance connect governor circuit CS1 pin, CS1 pin by the 5th resistance connect BUS node；Second opens
Powered-down road includes the 4th capacitor and the second metal-oxide-semiconductor, and the 4th capacitance connection is negative in the second transformer group primary Same Name of Ends and input terminal
Between pole, the source electrode of the 2nd MOS pipe connects the second transformer group primary different name end, and the grid of the second metal-oxide-semiconductor passes through the 6th resistance
The OUT2 pin of governor circuit is connected, the drain electrode of the second metal-oxide-semiconductor connects input cathode by the 7th resistance, the second metal-oxide-semiconductor
Drain electrode connects the CS2 pin of governor circuit by the 8th resistance, and CS2 pin connects BUS node by the 9th resistance.
It should be noted that metal-oxide-semiconductor Q1 and Q2 be mainly control T grade of transformer around on-off, change transformer T1, T2
The energy of middle storage, transformer T1, T2 are mainly the transmission for completing electric energy from primary to secondary, two diodes of secondary circuit
D1, D2 play rectification and afterflow respectively, guarantee power module stable work and output；Output filter circuit mainly includes
Capacitor and inductance can filter out the ripple in output direct current, achieve the purpose that stablize output；Governor circuit using with
LM50232 chip is the circuit of core, mainly to power switch tube drives and control, while carrying out short circuit etc. to power module
Protection.
In actual work, noise is typically entered when power module importation does not meet the first inductance L1 and the second inductance L2
It is larger, it will lead to that power module output noise is big, influence the use of rear end equipment.Specifically, the first photoelectrical coupler 401401
TLP280 chip is selected with the second photoelectrical coupler 402402, first diode D1 and the second diode D2 select TL431 type two
Pole pipe, the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 select FDMC86160 type metal-oxide-semiconductor.
As shown in figure 4, output circuit 403 includes output filter circuit, in which: output filter circuit includes the first output filter
Wave circuit and the second output filter circuit, the first output filter circuit include first diode, the 5th capacitor, the 6th capacitor,
Ten resistance, the first inductance, VS node and COM node, the anode and cathode of first diode are separately connected the first transformer group time
Grade different name end and VS node, third inductance connect in VS node and output head anode, the 5th capacitor connect VS node and COM node it
Between, the 6th capacitor and the tenth resistance connect between output head anode and COM node, COM node connection the first transformer group time
Grade Same Name of Ends；Second output filter circuit includes the second diode, the 7th capacitor, the 8th capacitor, eleventh resistor and the second electricity
Sense, the second transformer group secondary different name end of anode connection of the second diode, the cathode of the second diode connect COM node, the
Seven capacitors connect between COM node and the second transformer group secondary Same Name of Ends, and the 8th capacitor and eleventh resistor connect and save in COM
Between point and negative pole of output end, the second inductance is connect between the second transformer group secondary Same Name of Ends and negative pole of output end.
As shown in figure 5, output circuit 403 further includes feed circuit, in which: feed circuit includes the first feed circuit and the
Two feed circuits, the first feed circuit include twelfth resistor, thirteenth resistor, the 14th resistance, the 15th resistance, the 16th
Resistance, the 4th diode, the 9th capacitor, the tenth capacitor and the first photoelectrical coupler, output head anode pass sequentially through the 12nd electricity
Resistance, thirteenth resistor connect COM node, and the 14th resistance is in parallel with thirteenth resistor, the anode connection of the first photoelectrical coupler
VS node, the cathode of the first photoelectrical coupler connect the cathode of the 4th diode by the 15th resistance, and the 4th diode is just
Pole connects COM node, and the cathode of the 4th diode passes sequentially through the 9th capacitor, thirteenth resistor connection COM node, and COMP1 draws
The 16th resistance and the tenth capacitor have been sequentially connected in series between foot and input cathode；Second feed circuit include the 17th resistance,
18th resistance, the 19th resistance, the 20th resistance, the 21st resistance, the 5th diode, the 11st capacitor, the 12nd electricity
Appearance and the second photoelectrical coupler, COM node passes sequentially through the 17th resistance, the 18th resistance connects negative pole of output end, and the 19th
Resistance and the 18th resistor coupled in parallel, the anode connection COM node of the second photoelectrical coupler, the cathode of the first photoelectrical coupler pass through
20th resistance connects the cathode of the 5th diode, the anode connection negative pole of output end of the 5th diode, and the 5th diode is born
Pole passes sequentially through the 11st capacitor, the 18th resistance connection negative pole of output end, successively goes here and there between COMP2 pin and input cathode
It is associated with the 21st resistance and the 12nd capacitor.
Specifically, signal is fed back to governor circuit by winding displacement 5 by feed circuit.
In actual work: the program can be effectively solved Switching Power Supply output oscillation by increased feedback compensation circuit
Unstable problem, practical to test power module, comparison increases the output wave of power module before and after feedback compensation circuit
Shape obtains increase feedback compensation circuit after power module output stablize, work that can be more reliable and more stable.
It should be further noted that as shown in figure 5, the present embodiment passes through increased first loop compensation circuit and second
Loop compensation circuit compensates for the closed-loop pole of system, while increasing the stability margin of circuit, higher compared to having before increasing
Stability, be able to use the working frequency of wider range, the problems such as the output oscillation of effective solution Switching Power Supply, improve electricity
The job stability of source module, wherein the first loop compensation circuit includes the 13rd capacitor and the 22nd resistance, the second loop
Compensation circuit includes the 14th capacitor and the 23rd resistance.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement；And these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (6)
1. a kind of inverse-excitation type DC-DC power source device, which is characterized in that including the round cap (1) being detachably connected and toroidal shell
The power circuit (4) being arranged inside body (2) and circular shell (2), in which:
The upper surface of the circular shell (2) mills out three independent separate cavities by milling cutter: i.e. the first separate cavities (201), second
Separate cavities (202) and third separate cavities (203) offer internal wire casing (204) between separate cavities, the first separate cavities (201) and
The side of third separate cavities (203) offers external wire casing (205), and the bottom of separate cavities is provided with circuit mounting hole (206),
The edge of circular shell (2) is provided with lid mounting hole (207)；
The power circuit (4) includes the input circuit (401), transformer circuit (402) and output circuit being electrically connected to each other
(403), the input circuit (401) is mounted on the first separate cavities (201) inside, input circuit (401) by installing screw (3)
Externally it is arranged wired row (5) by external wire casing (205), the transformer circuit (402) is mounted on the by installing screw (3)
Two separate cavities (202) are internal, and the output circuit (403) is mounted on third separate cavities (203) inside by installing screw (3),
Wired row (5) are externally arranged by external wire casing (205) in output circuit (403)；
It is external defeated that external input terminals pass sequentially through input circuit (401), transformer circuit (402) and output circuit (403) connection
Outlet, the input circuit (401) control for input filter and metal-oxide-semiconductor, and the transformer circuit (402) is for boosting or dropping
Pressure, the output circuit (403) is for exporting filtering.
2. inverse-excitation type DC-DC power source device according to claim 1, which is characterized in that the circle cap (1) and circle
It is connected between shell (2) by multiple screws (3), first separate cavities (201), the second separate cavities (202) and third isolation
Chamber (203) is the cuboid cavity with fillet.
3. inverse-excitation type DC-DC power source device according to claim 2, which is characterized in that transformer circuit (402) packet
Include two groups of transformers of coaxial arrangement: i.e. the first transformer group and the second transformer group.
4. inverse-excitation type DC-DC power source device according to claim 3, which is characterized in that the input circuit (401) includes
Input filter circuit, power switch circuit and governor circuit, in which:
The input filter circuit includes first capacitor, the second capacitor and BUS node, and the first capacitor and the second capacitor connect
It connects between input anode and input cathode, the input anode is primary by BUS node connection the first transformer group
Same Name of Ends；
The governor circuit includes LM5032 chip circuit, and the LM5032 chip includes that OUT1 pin, CS1 pin, COMP1 draw
Foot, OUT2 pin, CS2 pin, COMP2 pin, VIN pin and VCC pin；
The power switch circuit includes first switch circuit and second switch circuit；The first switch circuit includes third electricity
Appearance and the first metal-oxide-semiconductor, the third capacitance connection is between the first transformer group primary Same Name of Ends and input cathode, institute
The source electrode for stating the first metal-oxide-semiconductor connects the first transformer group primary different name end, and the grid of first metal-oxide-semiconductor is connected by second resistance
Connecing the OUT1 pin of governor circuit, the drain electrode of first metal-oxide-semiconductor connects input cathode by 3rd resistor, and described first
The drain electrode of metal-oxide-semiconductor connects the CS1 pin of governor circuit by the 4th resistance, and the CS1 pin connects BUS section by the 5th resistance
Point；The second switch circuit includes the 4th capacitor and the second metal-oxide-semiconductor, and the 4th capacitance connection is in the second transformer group
Between primary Same Name of Ends and input cathode, the source electrode of second metal-oxide-semiconductor connects the second transformer group primary different name end, described
The grid of second metal-oxide-semiconductor connects the OUT2 pin of governor circuit by the 6th resistance, and the drain electrode of second metal-oxide-semiconductor passes through the 7th
Resistance connects input cathode, and the drain electrode of second metal-oxide-semiconductor connects the CS2 pin of governor circuit by the 8th resistance, described
CS2 pin connects BUS node by the 9th resistance.
5. inverse-excitation type DC-DC power source device according to claim 4, which is characterized in that the output circuit (403) includes
Output filter circuit, in which:
The output filter circuit includes the first output filter circuit and the second output filter circuit, the first output filtered electrical
Road includes first diode, the 5th capacitor, the 6th capacitor, the tenth resistance, the first inductance, VS node and COM node, and described first
The anode and cathode of diode are separately connected the first transformer group secondary different name end and VS node, and third inductance connects to be saved in the VS
Point and output head anode, the 5th capacitor connect between the VS node and COM node, the 6th capacitor and the tenth resistance
It connects between the output head anode and COM node, the COM node connects the first transformer group secondary Same Name of Ends；It is described
Second output filter circuit includes the second diode, the 7th capacitor, the 8th capacitor, eleventh resistor and the second inductance, and described the
The second transformer group secondary different name end of anode connection of two diodes, the cathode connection COM node of the second diode, the described 7th
Capacitor connects between the COM node and the second transformer group secondary Same Name of Ends, and the 8th capacitor and eleventh resistor connect
Between the COM node and negative pole of output end, second inductance is connect in the second transformer group secondary Same Name of Ends and output end
Between cathode.
6. inverse-excitation type DC-DC power source device according to claim 5, which is characterized in that the output circuit (403) is also wrapped
Include feed circuit, in which:
The feed circuit includes the first feed circuit and the second feed circuit, and first feed circuit includes the 12nd electricity
Resistance, thirteenth resistor, the 14th resistance, the 15th resistance, the 16th resistance, the 4th diode, the 9th capacitor, the tenth capacitor and
First photoelectrical coupler, the output head anode pass sequentially through twelfth resistor, thirteenth resistor connection COM node, and described the
14 resistance are in parallel with thirteenth resistor, the anode connection VS node of first photoelectrical coupler, first photoelectric coupling
The cathode of device connects the cathode of the 4th diode, the anode connection COM node of the 4th diode, institute by the 15th resistance
The cathode for stating the 4th diode passes sequentially through the 9th capacitor, thirteenth resistor connection COM node, and COMP1 pin and input terminal are negative
The 16th resistance and the tenth capacitor have been sequentially connected in series between pole；Second feed circuit includes the 17th resistance, the 18th electricity
Resistance, the 19th resistance, the 20th resistance, the 21st resistance, the 5th diode, the 11st capacitor, the 12nd capacitor and second
Photoelectrical coupler, the COM node passes sequentially through the 17th resistance, the 18th resistance connects negative pole of output end, and the described 19th
Resistance and the 18th resistor coupled in parallel, the anode connection COM node of second photoelectrical coupler, first photoelectrical coupler
Cathode connects the cathode of the 5th diode, the anode connection negative pole of output end of the 5th diode, institute by the 20th resistance
The cathode for stating the 5th diode passes sequentially through the 11st capacitor, the 18th resistance connection negative pole of output end, COMP2 pin and input
The 21st resistance and the 12nd capacitor have been sequentially connected in series between the cathode of end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920455822.7U CN209593259U (en) | 2019-04-05 | 2019-04-05 | A kind of inverse-excitation type DC-DC power source device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920455822.7U CN209593259U (en) | 2019-04-05 | 2019-04-05 | A kind of inverse-excitation type DC-DC power source device |
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| Publication Number | Publication Date |
|---|---|
| CN209593259U true CN209593259U (en) | 2019-11-05 |
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| CN201920455822.7U Active CN209593259U (en) | 2019-04-05 | 2019-04-05 | A kind of inverse-excitation type DC-DC power source device |
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