CN205123604U - Online integrated integration monolithic formula switching power supply - Google Patents
Online integrated integration monolithic formula switching power supply Download PDFInfo
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- CN205123604U CN205123604U CN201520888108.9U CN201520888108U CN205123604U CN 205123604 U CN205123604 U CN 205123604U CN 201520888108 U CN201520888108 U CN 201520888108U CN 205123604 U CN205123604 U CN 205123604U
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Abstract
The utility model discloses an online integrated integration monolithic formula switching power supply, the power includes NULL, direct current steady voltage output, NULL is in order through frequency transformer, rectification filter circuit, integrated switch chopper and output filter circuit to direct current output. Utilize frequency transformer to keep apart and step down, utilize integrated switch chopper adjustment output voltage. Utilize the electric current extension circuit with the output current dilatation. The integrated switch chopper adopts switch copped wave step -down principle control technique. It adopts firm online frequency transformer adjustment technique to exchange the reduction voltage circuit. The electric current extension circuit adopts triode amplification prinple technique. It is strong that it has an electric wire netting adaptability, characteristics such as the output voltage scope is wide, conversion efficiency is high, circuit structure is simple, output current is big, environment adaptability is strong.
Description
Technical field
The utility model relates to online integrated one chip switching power supply.
Background technology
Switching mode chopper voltage stabilizer is the one of series regulator.He utilizes Correctional tube HF switch principle, regulated output voltage is realized by the switch conduction and energy storage original paper that adjust transistor, through triode amplification dilatation output current, break the restriction of the conventional one-piece switching current upper limit, powerful for electrical domain in being widely used in.Compare discrete switching power supply component circuit structure simple, cost is lower.
Utility model content
The utility model technical issues that need to address are just the defect overcoming prior art, provide a kind of online integrated one chip switching power supply that is integrated, intensifying current type.
For solving the problem, the utility model adopts following technical scheme:
Online integrated one chip switching power supply, described stabilized voltage power supply comprises the Industrial Frequency Transformer, current rectifying and wave filtering circuit, integrated switch chopper and the output filter circuit that connect successively; Described stabilized voltage power supply utilizes Industrial Frequency Transformer isolated buck, integrated switch chopper is utilized to adjust output voltage, utilize electric current extension circuit by output current dilatation, described integrated switch chopper adopts switch chopping depressuring, described ac buck circuit adopts firm online Industrial Frequency Transformer, and described electric current extension circuit adopts triode to amplify.
Power frequency ac voltage after described Industrial Frequency Transformer step-down, through rectifier bridge rectification, becomes the direct current of pulsation, carries out, after filtering, entering switch chopper through filter capacitor group;
Described switch chopper comprises Correctional tube, described Correctional tube is operated on off state, the VADJ end of described switch chopper has the divider resistance of output, for sampling to output voltage, described divider resistance connects chip control circuit, chip control circuit, to after sampled signal process, controls output voltage by the duty cycle of switching changing Correctional tube, realizes voltage relatively stable.
Direct current after dilatation exports and supplies as load after filter capacitor filtering.
The online integrated one chip switching power supply of the utility model, input adopts Industrial Frequency Transformer step-down, and direct current exports and adopts integrated switch chopper burning voltage.Utilize electric current extension circuit by output current dilatation.Entity embedding all-metal closed structure is adopted to improve adaptive capacity to environment.
The course of work of the present utility model is: alternating current 220V input first carries out isolated buck through Industrial Frequency Transformer, to meet the low-voltage power supply requirement of rear class chopper chip, pulsating direct current is converted to through current rectifying and wave filtering circuit, export, through triode amplification dilatation output current through integrated switch chopper burning voltage again.Wherein, integrated switch chopper adopts resistor divider to realize feedback circuit and carry out output voltage adjustment, input voltage is changed or load change time output voltage simultaneous adaptation adjustment, achieve the relative stability of output voltage.Electric current extension circuit adopts triode amplification principle to be amplified by output current.
It is large that the utility model has output current, the features such as conversion efficiency is high, and circuit structure is simple, reliability is high, electrical network is adaptable.
The utility model has the following advantages compared with traditional linear power supply:
1, online mode of operation, directly accesses utility grid work.
2, output current is large, and conversion efficiency is high.
3, all-metal sealing, entity embedding, resistance to harsh environment for use.
4, power supply grid is compatible strong.
Accompanying drawing explanation
Fig. 1 is the utility model schematic block circuit diagram.
Fig. 2 is input power frequency step-down and current rectifying and wave filtering circuit schematic diagram;
Fig. 3 is switch copped wave and electric current dilatation partial schematic diagram;
Fig. 4 is output filter circuit schematic diagram.
Embodiment
As shown in Figure 1 to 4, the online integrated one chip switching power supply of the utility model, first AC-input voltage enters Industrial Frequency Transformer, and Industrial Frequency Transformer adopts electrical network Design of Compatibility, overload capacity is strong, and power supply complete machine grid adaptability is significantly promoted.
Power frequency ac voltage after Industrial Frequency Transformer step-down, through rectifier bridge rectification, becomes the direct current of pulsation, carries out, after filtering, entering switch chopper through filter capacitor group.
The Correctional tube of switch chopper inside is operated on off state, VADJ end is sampled to output voltage by the divider resistance of output, then chip control circuit is fed back to, chip control circuit is to after sampled signal process, control output voltage by the duty cycle of switching changing Correctional tube, realize voltage relatively stable.
Direct current after dilatation exports supply load after filter capacitor filtering.
Last it is noted that obviously, above-described embodiment is only for the utility model example is clearly described, and the restriction not to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And thus the apparent change of extending out or variation be still among protection range of the present utility model.
Claims (4)
1. an online integrated one chip switching power supply, is characterized in that: described stabilized voltage power supply comprises the Industrial Frequency Transformer, current rectifying and wave filtering circuit, integrated switch chopper and the output filter circuit that connect successively; Described stabilized voltage power supply utilizes Industrial Frequency Transformer isolated buck, integrated switch chopper is utilized to adjust output voltage, utilize electric current extension circuit by output current dilatation, described integrated switch chopper adopts switch chopping depressuring, ac buck circuit adopts firm online Industrial Frequency Transformer, and described electric current extension circuit adopts triode to amplify.
2. online integrated one chip switching power supply according to claim 1, it is characterized in that: the power frequency ac voltage after described Industrial Frequency Transformer step-down is through rectifier bridge rectification, become the direct current of pulsation, carry out, after filtering, entering switch chopper through filter capacitor group.
3. online integrated one chip switching power supply according to claim 2, it is characterized in that: described switch chopper comprises Correctional tube, described Correctional tube is operated on off state, the VADJ end of described switch chopper has the divider resistance of output, for sampling to output voltage, described divider resistance connects chip control circuit, and chip control circuit is to after sampled signal process, control output voltage by the duty cycle of switching changing Correctional tube, realize voltage relatively stable.
4. online integrated one chip switching power supply according to claim 3, is characterized in that: the direct current after dilatation exports and supplies as load after filter capacitor filtering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520888108.9U CN205123604U (en) | 2015-11-09 | 2015-11-09 | Online integrated integration monolithic formula switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520888108.9U CN205123604U (en) | 2015-11-09 | 2015-11-09 | Online integrated integration monolithic formula switching power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205123604U true CN205123604U (en) | 2016-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520888108.9U Active CN205123604U (en) | 2015-11-09 | 2015-11-09 | Online integrated integration monolithic formula switching power supply |
Country Status (1)
| Country | Link |
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| CN (1) | CN205123604U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105720843A (en) * | 2016-04-12 | 2016-06-29 | 北京联合大学 | Method and device for improving utilization efficiency of power frequency alternating current energy |
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2015
- 2015-11-09 CN CN201520888108.9U patent/CN205123604U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105720843A (en) * | 2016-04-12 | 2016-06-29 | 北京联合大学 | Method and device for improving utilization efficiency of power frequency alternating current energy |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |