CN103337953A - Switching power supply equipment for PWM control mode - Google Patents
Switching power supply equipment for PWM control mode Download PDFInfo
- Publication number
- CN103337953A CN103337953A CN2013102442331A CN201310244233A CN103337953A CN 103337953 A CN103337953 A CN 103337953A CN 2013102442331 A CN2013102442331 A CN 2013102442331A CN 201310244233 A CN201310244233 A CN 201310244233A CN 103337953 A CN103337953 A CN 103337953A
- Authority
- CN
- China
- Prior art keywords
- output
- power supply
- box body
- equipment box
- pwm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention relates to switching power supply equipment for a PWM (Pulse-Width Modulation) control mode, which comprises an equipment box body, wherein a box cover is arranged on the equipment box body. The equipment is characterized in that a plug-in-type control circuit board with a slot is arranged in the equipment box body; a power conversion device is connected onto the slot; an output end of the power conversion device is connected with a DC/DC output device; an output end of the DC/DC output device is connected with an output voltage detection device; the DC/DC output device is connected with an output interface, meanwhile an output end of the output voltage detection device is connected with a main control device; an output end of the main control device is connected with an input end of an adjusting device; an output end of the adjusting device is connected with a PWM control device; an output end of the PWM control device is connected with an assistant input end of the power conversion device. Therefore, the problem of the requirement of the stability of the working condition of the wide range output switch power supply can be solved and optimized; meanwhile the switch frequency is changed; when the switch frequency is reduced, the equipment can reduce the switch loss of the switch power supply to improve the working efficiency of the switch power supply.
Description
Technical field
The present invention relates to a kind of switch power supply equipment, relate in particular to a kind of pwm pattern switch power supply equipment.
Background technology
Switching Power Supply is because user's requirement and the requirement of highly compatible now, generally require the output voltage range of Switching Power Supply wideer, therefore in traditional control mode, when the big electric current of output small voltage, because all there is the problem of minimum pulse width in general control chip, so concussion can appear in power supply.Like this, the steady operation that is unfavorable for the electricity consumption device.
Summary of the invention
Purpose of the present invention is exactly in order to solve the above-mentioned problems in the prior art, and a kind of pwm pattern switch power supply equipment is provided.
Purpose of the present invention is achieved through the following technical solutions:
A kind of pwm pattern switch power supply equipment, include the equipment box body, the equipment box body is provided with lid, wherein: be provided with the plug-in type control circuit board in the described equipment box body, described plug-in type control circuit board is provided with slot, be connected with power conversion unit on the described slot, DC the DC output device, the output voltage checkout gear, main control unit, adjusting device, the PWM control device, be connected with input interface on the described power conversion unit, the output of described power conversion unit be connected with DC the input of DC output device, described DC the output of DC output device connect the input of output voltage checkout gear, described DC be connected with output interface on the DC output device, the output of described output voltage checkout gear connects the input of main control unit, the output of described main control unit is connected with the input of adjusting device, the output of described adjusting device connects the input of PWM control device, and the output of described PWM control device connects the auxiliary input of power conversion unit.
Above-mentioned a kind of pwm pattern switch power supply equipment, wherein: described power conversion unit be Switching Power Supply with DC the DC power conversion unit, described main control unit is Switching Power Supply CPU main control unit.
Further, above-mentioned a kind of pwm pattern switch power supply equipment, wherein: be provided with screw hole in the described equipment box body, described plug-in type control circuit board is provided with location hole, and described plug-in type control circuit board is connected with equipment box body screw.
Further, above-mentioned a kind of pwm pattern switch power supply equipment, wherein: be provided with holding tank in the described equipment box body.
Further, above-mentioned a kind of pwm pattern switch power supply equipment, wherein: be provided with reinforcement in the described equipment box body.
Further, above-mentioned a kind of pwm pattern switch power supply equipment, wherein: be provided with fin in the described equipment box body.
Again further, above-mentioned a kind of pwm pattern switch power supply equipment, wherein: described equipment box body is provided with louvre.
The advantage of technical solution of the present invention is mainly reflected in: rely on the cooperation of each device, can solve and optimize the stability problem of the operating state that requires wide region output Switching Power Supply.Simultaneously, changed switching frequency, when switching frequency reduced, the switching loss that can reduce Switching Power Supply improved the operating efficiency of Switching Power Supply.Moreover simple structure of the present invention has preferable firm degree and radiating effect.
Purpose of the present invention, advantage and characteristics will illustrate by the non-limitative illustration of following preferential embodiment and explain that these embodiment only provide as an example with reference to accompanying drawing.
Description of drawings
Fig. 1 is the organigram that this pwm pattern is used switch power supply equipment.
Fig. 2 is the circuit theory diagrams that this pwm pattern is used switch power supply equipment.
| 1 | The |
2 | The plug-in type |
| 3 | |
4 | DC the |
| 5 | The output |
6 | |
| 7 | Adjusting |
8 | The |
| 9 | |
10 | |
| 11 | |
12 | |
| 13 | |
14 | Louvre |
。
Embodiment
A kind of pwm pattern switch power supply equipment as shown in Figure 1, 2, include equipment box body 1, equipment box body 1 is provided with lid, its special feature is: be provided with plug-in type control circuit board 2 in the equipment box body 1 of the present invention, plug-in type control circuit board 2 is provided with slot, slot be connected with power conversion unit 3, DC DC output device 4, output voltage checkout gear 5, main control unit 6, adjusting device 7, PWM control device 8.Specifically, be connected with input interface 9 on the power conversion unit 3, the output of power conversion unit 3 be connected with DC the input of DC output device 4.Simultaneously, DC the output of DC output device 4 connect the input of output voltage checkout gear 5, DC be connected with output interface 10 on the DC output device 4.Connect the input of main control unit 6 at the output of output voltage checkout gear 5, the output of main control unit 6 is connected with the input of adjusting device 7.And the output of adjusting device 7 connects the input of PWM control device 8, and the output of PWM control device 8 connects the auxiliary input of power conversion unit 3.
With regard to the present invention's one preferred implementation, in order effectively to adapt to common pwm pattern, meet the use needs of most Switching Power Supplies, power conversion unit 3 for Switching Power Supply with DC DC power conversion unit 3.Corresponding is that main control unit 6 is Switching Power Supply CPU main control unit 6 with it.
With regard to the present invention's one preferred implementation, the installation location of considering plug-in type control circuit board 2 is firm, can not occur rocking, and is provided with screw hole in the equipment box body 1, plug-in type control circuit board 2 is provided with location hole, realizes that plug-in type control circuit board 2 is connected with equipment box body 1 screw.
Further, for unnecessary displacement appears in the device that prevents from installing, can not influence real work because of loosening, in equipment box body 1, be provided with holding tank 11.Like this, each assembly can be placed in the holding tank 11.Simultaneously, in order to strengthen the firm degree of integral body of the present invention, in equipment box body 1, be provided with reinforcement 12.
And, consider that each assembly generates heat easily when telling processing, in order to improve useful life, effectively dispel the heat, in equipment box body 1, be provided with fin 13.Corresponding equipment box body 1 is provided with louvre 14.
As shown in Figure 2, in conjunction with circuit theory diagrams of the present invention, circuit is made up of U1, U2, C1, C2, C3, C4, R1, R2, R3, R4, R5, R6.When circuit working, take output voltage by the sample circuit that R3, R4 form, giving U2 (CPU control chip) control chip 5 pin (ADC sample pin) makes CPU obtain output voltage values, the parameter that obtains according to formula 1 and formula 2 is regulated relation then, sends controlled quentity controlled variable by 12 pin (PWM1 output pin), 13 pin (PWM2 output pin) of U2 (CPU control chip) respectively; This two-way controlled quentity controlled variable wherein 12 pin (PWM1 output pin) of one road U2 (CPU control chip) is controlled the purpose that Q2 has reached adjusting U1 (PWM power supply control chip) 1 pin (COMP) voltage through the filter circuit of R6 and C4 composition, this 1 pin (COMP) is height according to 1 pin (COMP) voltage in the function of U1 (PWM power supply control chip), the size of control U1 (PWM power supply control chip) 6 pin (OUT) output duty cycle; 13 pin (PWM2 output pin) of another road U2 (CPU control chip) have reached adjusting U1 (PWM power supply control chip) 3 pin (CT) to the purpose of capacitor C 1 charging speed through the filter circuit control Q1 of R5 and C3 composition, and this 3 pin (CT) is to be controlled the size of U1 (PWM power supply control chip) 6 pin (OUT) output frequency the charging interval of C1 electric capacity charging according to 3 pin (CT) in the function of U1 (PWM power supply control chip).Therefore, can reach the adjusting duty purpose of frequency when.
By above-mentioned character express as can be seen, behind employing the present invention, rely on the cooperation of each device, can solve and optimize the stability problem of the operating state that requires wide region output Switching Power Supply.Simultaneously, changed switching frequency, when switching frequency reduced, the switching loss that can reduce Switching Power Supply improved the operating efficiency of Switching Power Supply.Moreover simple structure of the present invention has preferable firm degree and radiating effect.
Certainly, more than only be concrete exemplary applications of the present invention, protection scope of the present invention is not constituted any limitation.In addition to the implementation, the present invention can also have other execution mode.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop within the present invention's scope required for protection.
Claims (7)
1. pwm pattern switch power supply equipment, include the equipment box body, the equipment box body is provided with lid, it is characterized in that: be provided with the plug-in type control circuit board in the described equipment box body, described plug-in type control circuit board is provided with slot, be connected with power conversion unit on the described slot, DC the DC output device, the output voltage checkout gear, main control unit, adjusting device, the PWM control device, be connected with input interface on the described power conversion unit, the output of described power conversion unit be connected with DC the input of DC output device, described DC the output of DC output device connect the input of output voltage checkout gear, described DC be connected with output interface on the DC output device, the output of described output voltage checkout gear connects the input of main control unit, the output of described main control unit is connected with the input of adjusting device, the output of described adjusting device connects the input of PWM control device, and the output of described PWM control device connects the auxiliary input of power conversion unit.
2. a kind of pwm pattern switch power supply equipment according to claim 1 is characterized in that: described power conversion unit be Switching Power Supply with DC the DC power conversion unit, described main control unit is Switching Power Supply CPU main control unit.
3. a kind of pwm pattern switch power supply equipment according to claim 1, it is characterized in that: be provided with screw hole in the described equipment box body, described plug-in type control circuit board is provided with location hole, and described plug-in type control circuit board is connected with equipment box body screw.
4. a kind of pwm pattern switch power supply equipment according to claim 1 is characterized in that: be provided with holding tank in the described equipment box body.
5. a kind of pwm pattern switch power supply equipment according to claim 1 is characterized in that: be provided with reinforcement in the described equipment box body.
6. a kind of pwm pattern switch power supply equipment according to claim 1 is characterized in that: be provided with fin in the described equipment box body.
7. a kind of pwm pattern switch power supply equipment according to claim 1, it is characterized in that: described equipment box body is provided with louvre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102442331A CN103337953A (en) | 2013-06-20 | 2013-06-20 | Switching power supply equipment for PWM control mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102442331A CN103337953A (en) | 2013-06-20 | 2013-06-20 | Switching power supply equipment for PWM control mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103337953A true CN103337953A (en) | 2013-10-02 |
Family
ID=49246071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102442331A Pending CN103337953A (en) | 2013-06-20 | 2013-06-20 | Switching power supply equipment for PWM control mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103337953A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200522495A (en) * | 2003-12-31 | 2005-07-01 | Delta Electronics Inc | Switching power supply utilizing oscillator frequency tuner to enhance load driving capability under peak load condition |
| US7298361B2 (en) * | 2004-12-07 | 2007-11-20 | Rung-Tsung Lin | Non-contact electric inductance circuit for power source |
| CN101196276A (en) * | 2007-09-21 | 2008-06-11 | 广州市雅江光电设备有限公司 | Program controlled mixed color LED light projector |
| CN203423619U (en) * | 2013-06-20 | 2014-02-05 | 张家港市华为电子有限公司 | Switching power supply device for PWM control mode |
-
2013
- 2013-06-20 CN CN2013102442331A patent/CN103337953A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200522495A (en) * | 2003-12-31 | 2005-07-01 | Delta Electronics Inc | Switching power supply utilizing oscillator frequency tuner to enhance load driving capability under peak load condition |
| US7298361B2 (en) * | 2004-12-07 | 2007-11-20 | Rung-Tsung Lin | Non-contact electric inductance circuit for power source |
| CN101196276A (en) * | 2007-09-21 | 2008-06-11 | 广州市雅江光电设备有限公司 | Program controlled mixed color LED light projector |
| CN203423619U (en) * | 2013-06-20 | 2014-02-05 | 张家港市华为电子有限公司 | Switching power supply device for PWM control mode |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202190212U (en) | Overvoltage control circuit, low-power-consumption power circuit and television | |
| CN104362773B (en) | wireless electric energy transmission device | |
| CN203423619U (en) | Switching power supply device for PWM control mode | |
| CN103337953A (en) | Switching power supply equipment for PWM control mode | |
| CN103312163A (en) | PFM (Pulse Frequency Modulation) switching circuit of switch power supply | |
| CN204652223U (en) | A kind of single-ended flyback small-power switching power-supply | |
| CN104953847A (en) | Isolated DC/DC (direct current/direct current) power supply module adopting ultra-wide input range and ultra-low output voltage | |
| CN203423617U (en) | High voltage input DC-DC power start-up device | |
| CN204442180U (en) | A kind of underloading interval puts initialization circuit | |
| CN203984247U (en) | A kind of Novel DC multilevel decompression voltage stabilizing circuit | |
| CN203250233U (en) | Direct current voltage reduction circuit and electronic products | |
| CN202634270U (en) | DC voltage stabilizing power supply circuit | |
| CN202331349U (en) | Motherboard power supply with peripheral component interconnect (PCI) plug | |
| CN206237300U (en) | Switching power circuit | |
| CN202772859U (en) | Multi-mode, multi-range time relay | |
| CN204721215U (en) | DC-DC change-over circuit | |
| CN204349790U (en) | A kind of DC power output voltage regulating circuit | |
| CN205247309U (en) | Computer power supply | |
| CN202513815U (en) | Power module design supporting 15 amperes (As) | |
| CN203086340U (en) | DC-to-DC voltage-stabilizing output circuit and air-condition remote controller based on DC-to-DC voltage-stabilizing output circuit | |
| CN202818099U (en) | High-efficiency switch power supply frequency modulation circuit | |
| CN103048941A (en) | Alternating-current standby switching circuit and standby controlling device | |
| CN202617000U (en) | Step-up and step-down type conversion circuit capable of identifying in-phase control voltage | |
| CN103337954A (en) | Energy-saving control device for forward driving switch power supply | |
| CN106329910A (en) | High-precision controllable power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20131002 |