CN201674406U - High-power switching power supply device - Google Patents
High-power switching power supply device Download PDFInfo
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- CN201674406U CN201674406U CN2010201869986U CN201020186998U CN201674406U CN 201674406 U CN201674406 U CN 201674406U CN 2010201869986 U CN2010201869986 U CN 2010201869986U CN 201020186998 U CN201020186998 U CN 201020186998U CN 201674406 U CN201674406 U CN 201674406U
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- power supply
- mosfet
- switching power
- direct current
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Abstract
A high-power switching power supply device adopts the PWM pulse-width closed-loop control technique. Power frequency voltage is converted into direct current via a rectifier bridge, higher harmonics of the direct current are eliminated by a differential-mode and common-mode filter circuit, and then the direct current is converted into alternating current via an MOSFET inverter tube. During the whole process, a main board control chip controls on and off of a switching power supply via an MOSFET switching tube, adjusts voltage via a digital potentiometer, and controls a grid electrode of the MOSFET inverter tube via a pulse width modulation chip, an optical coupler and a driver so as to convert the direct current into alternating current. The high-power switching power supply device has the advantages that the switching power supply device is light in weight and low in price, can improve power factors on the premise of inputting power frequency voltage, sufficiently eliminates higher harmonics of the input current, is convenient and easy in adjustment, can not change along with load impedance, and can keep stable power supply voltage.
Description
Technical field:
The utility model belongs to a kind of waveform that improves, and power is big, lightweight powerful switching power unit technical field.
Background technology:
Switching Power Supply miscellaneous in the market is a lot, under the power-frequency voltage input, the Switching Power Supply of the high-power steady operation for a long time of energy also has a lot, but preponderance (weigh at least also want 5Kg such as general computer ups power), output voltage also is difficult for regulating, and ripple is bigger, and voltage is not very stable, the Switching Power Supply that addresses these problems at present improve aspect waveform, the weight reduction unsatisfactory.
Summary of the invention:
The technical problems to be solved in the utility model is exactly to overcome the above defective that prior art exists, and proposes the great-power switching voltage regulator that a kind of output current can reach 5A; It can finish coarse adjustment by accurate adjustable resistance, digital potentiometer is finished fine setting, and shortage in weight 2Kg, includes control protection electric circuit in the device, when any problem appears in device, all can cut off the electricity supply quickly and safely, thereby reach the purpose of protecting power supply and people.
Technical problem of the present utility model is solved by following scheme.
A kind of powerful switching power unit is characterized in that, mainboard control chip MSP430 is connected with respectively: digital potentiometer MCP41010-I/SN, pulse width modulating chip SA8382, protection control chip 555, and button input and demonstration output; Wherein digital potentiometer MCP41010-I/SN connects pwm chip; Pulse width modulating chip SA8382 connects optocoupler TLP250, P521 and driving element IR2101; Protection control chip 555 connects difference protection chip 74HC05 and MOSFET inversion pipe IRFP460; MOSFET inversion pipe IRFP460 is connected with driving element IR2101 respectively, and is connected with the LRC filter circuit with protective circuit by direct current, and by exchanging controllable voltage output; By the 220V alternating current through the LC filter through rectifier bridge BU808 to the switch mosfet pipe to protective circuit and the RLC filter circuit be connected to MOSFET inversion pipe IRFP460; Protection control chip 555 is connected with optocoupler TLP250, P521; Pwm chip KA3525 is connected with the switch mosfet pipe.
Working method is to carry out rectification earlier, add the MOSFET pipe in this course and control break-make, the grid of MOSFET pipe (the G utmost point) is by mainboard control chip, digital potentiometer, the control of accurate adjustable resistance, and accurate adjustable resistance carries out coarse adjustment earlier, and 256 gears in the digital potentiometer are finely tuned.After carry out inversion, the direct current of rectification output is loaded into the drain electrode (the D utmost point) of MOSFET pipe in this course, the grid of MOSFET pipe (the G utmost point) is by controls such as mainboard control chip, pulse width modulating chip, optocoupler, driving elements, and what the source electrode of MOSFET pipe (the S utmost point) was exported then is that amplitude, frequency are all stablized adjustable alternating current.When switching power unit occurs when unusual; grid (the G utmost point) by MOSFET inversion pipe outputs signal to difference protection chip, protection control chip, mainboard control chip etc.; protection control chip instantaneous trip optocoupler; the mainboard control chip cuts off the switch mosfet pipe simultaneously by pwm chip, thereby reaches the purpose of protection switch power supply.The equal scalable of the amplitude of switch power source output voltage and frequency, coarse adjustment is controlled by accurate adjustable resistance, fine setting is regulated by the Keyboard Control plate that is connected the mainboard control chip, and amplitude and frequency all can show on charactron or LED, checks to intuitive and convenient the parameter of output voltage.
Further set forth the utility model content below in conjunction with drawings and Examples.
Description of drawings:
Fig. 1 is the structured flowchart of the utility model device;
Fig. 2 is galvanic partial rectification circuit diagram for alternating current is converted to;
Fig. 3 is converted to the part inverter circuit figure of alternating current for direct current.
Embodiment:
A kind of powerful switching power unit of the utility model, its connected mode is that mainboard control chip MSP430 is connected with respectively: digital potentiometer MCP41010-I/SN, pulse width modulating chip SA8382, protection control chip 555, and button input and demonstration output; Wherein digital potentiometer MCP41010-I/SN connects pwm chip; Pulse width modulating chip SA8382 connects optocoupler TLP250, P521 and driving element IR2101; Protection control chip 555 connects difference protection chip 74HC05 and MOSFET inversion pipe IRFP460; MOSFET inversion pipe IRFP460 is connected with driving element IR2101 respectively, and is connected with the LRC filter circuit with protective circuit by direct current, and by exchanging controllable voltage output; By the 220V alternating current through the LC filter through rectifier bridge BU808 to the switch mosfet pipe to protective circuit and the RLC filter circuit be connected to MOSFET inversion pipe IRFP460; Protection control chip 555 is connected with optocoupler TLP250, P521; Pwm chip KA3525 is connected with the switch mosfet pipe.The concrete johning knot composition of this switching power unit mainly comprises two circuit of rectification and inversion as shown in Figure 1.
The connected mode that rectification circuit is implemented as shown in Figure 2; operation principle is as follows: power-frequency voltage is passed through inductance L 1; capacitor C 1; the high order harmonic component of the main filtering alternating current of C2 filtering; carry out rectification by rectifier U1; connect coupling filter capacitor C5 after the rectification; afterwards by switch mosfet pipe Q1; Q2; the switch mosfet pipe is by mainboard control chip and pwm chip control; R1; R2 mainly plays metering function; by diode D1 voltage is protected, when overtension, D1 is oppositely breakdown again; at last by resistance R 3; R4, inductance L 2; capacitor C 3; C4; C6 carries out filtering.
The connected mode that inverter circuit is implemented as shown in Figure 3, the signal of grid (the G utmost point) is provided by mainboard control chip, pulse width modulating chip, optocoupler, driving element U1, four MOSFET pipes of Q1-Q4 are formed the H bridge and are used as symmetrical brachium pontis, deliver to the H bridge voltage+310V ,+310VG is added in respectively, and (signal is that two groups of amplitudes equate on the symmetry tubes of Q1 and Q4, Q2 and Q3, opposite polarity pulse signal), so just effectively avoided bridge tube conducting simultaneously up and down, be short-circuited.When quitting work, the grid of Q1 (the G utmost point) is by R1, R8, D1 discharge, drain electrode (the D utmost point) is discharged by R4, D5, source electrode (the S utmost point) passes through load discharge, the grid of Q2 (the G utmost point) is by R2, R3, D2 discharge, drain electrode (the D utmost point) by load discharge, source electrode (the S utmost point) is by R6 discharge, wherein Q3, Q4 control, discharge do not mark or illustrate, and be concrete consistent with Q1, Q2.Final switching power unit output voltage stabilizing adjustable signal OUT1 and OUT2.
Claims (1)
1. a powerful switching power unit is characterized in that, mainboard control chip MSP430 is connected with respectively: digital potentiometer MCP41010-I/SN, pulse width modulating chip SA8382, protection control chip 555, and button input and demonstration output; Wherein digital potentiometer MCP41010-I/SN connects pwm chip; Pulse width modulating chip SA8382 connects optocoupler TLP250, P521 and driving element IR2101; Protection control chip 555 connects difference protection chip 74HC05 and MOSFET inversion pipe IRFP460; MOSFET inversion pipe IRFP460 is connected with driving element IR2101 respectively, and is connected with the LRC filter circuit with protective circuit by direct current, and by exchanging controllable voltage output; By the 220V alternating current through the LC filter through rectifier bridge BU808 to the switch mosfet pipe to protective circuit and the RLC filter circuit be connected to MOSFET inversion pipe IRFP460; Protection control chip 555 is connected with optocoupler TLP250, P521; Pwm chip KA3525 is connected with the switch mosfet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201869986U CN201674406U (en) | 2010-05-12 | 2010-05-12 | High-power switching power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201869986U CN201674406U (en) | 2010-05-12 | 2010-05-12 | High-power switching power supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201674406U true CN201674406U (en) | 2010-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201869986U Expired - Lifetime CN201674406U (en) | 2010-05-12 | 2010-05-12 | High-power switching power supply device |
Country Status (1)
| Country | Link |
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| CN (1) | CN201674406U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103391013A (en) * | 2013-06-24 | 2013-11-13 | 北京电子工程总体研究所 | Missile test switch power supply with fault memorizing function |
| US20150015218A1 (en) * | 2013-07-11 | 2015-01-15 | Delta Electronics Power (Dong Guan) Co., Ltd. | Adjusting device of an output voltage of a switch power supply, an adjusting method thereof and an integrated chip |
| CN107515322A (en) * | 2017-10-25 | 2017-12-26 | 国网四川省电力公司电力科学研究院 | A kind of experiment power supply suitable for trichotomy Site Detection power distribution network transformer error |
| CN107612295A (en) * | 2017-10-16 | 2018-01-19 | 淮北市平祥感应炉有限公司 | A kind of button power controller |
-
2010
- 2010-05-12 CN CN2010201869986U patent/CN201674406U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103391013A (en) * | 2013-06-24 | 2013-11-13 | 北京电子工程总体研究所 | Missile test switch power supply with fault memorizing function |
| US20150015218A1 (en) * | 2013-07-11 | 2015-01-15 | Delta Electronics Power (Dong Guan) Co., Ltd. | Adjusting device of an output voltage of a switch power supply, an adjusting method thereof and an integrated chip |
| US9618585B2 (en) * | 2013-07-11 | 2017-04-11 | Delta Electronics Power (Dong Guan) Co., Ltd. | Adjusting device of an output voltage of a switch power supply, an adjusting method thereof and an integrated chip |
| CN107612295A (en) * | 2017-10-16 | 2018-01-19 | 淮北市平祥感应炉有限公司 | A kind of button power controller |
| CN107612295B (en) * | 2017-10-16 | 2019-04-19 | 淮北市平祥感应炉有限公司 | A kind of button power controller |
| CN107515322A (en) * | 2017-10-25 | 2017-12-26 | 国网四川省电力公司电力科学研究院 | A kind of experiment power supply suitable for trichotomy Site Detection power distribution network transformer error |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101215 |