CN103532394A - Continuously adjustable intelligent power module - Google Patents

Continuously adjustable intelligent power module Download PDF

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Publication number
CN103532394A
CN103532394A CN201310505338.8A CN201310505338A CN103532394A CN 103532394 A CN103532394 A CN 103532394A CN 201310505338 A CN201310505338 A CN 201310505338A CN 103532394 A CN103532394 A CN 103532394A
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CN
China
Prior art keywords
voltage
power module
output
programmable digital
digital potentiometer
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Pending
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CN201310505338.8A
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Chinese (zh)
Inventor
田波
郭威
谢斌
焦贵忠
郑宇�
方岚
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No 214 Institute of China North Industries Group Corp
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No 214 Institute of China North Industries Group Corp
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Priority to CN201310505338.8A priority Critical patent/CN103532394A/en
Publication of CN103532394A publication Critical patent/CN103532394A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a continuously adjustable intelligent power module which comprises a singlechip (2), wherein a rectifying, filtering and voltage-stabilizing circuit (1), a digit keyboard (3), a liquid crystal display (4) and a programmable digital potentiometer (R2) connected with the singlechip (2) are arranged on the periphery of the singlechip (2); the power module further comprises a boost pressure and counter pressure converting circuit (6) taking a DC-DC converter (5) as a body; an output end of the rectifying, filtering and voltage-stabilizing circuit (1) is taken as an input of the DC-DC converter (5); the DC-DC converter (5) can be connected with the programmable digital potentiometer (R2); a positive output end and a negative output end of the boost pressure and counter pressure converting circuit (6) are outputs of the power module; and a fixed resister (R1) is further connected between the negative output end of the boost pressure and counter pressure converting circuit (6) and the programmable digital potentiometer (R2). Rectified and filtered alternating voltage is subjected to boost pressure and counter pressure treatment, and the singlechip (2) and the programmable digital potentiometer (R2) are used for performing intelligent regulation on output voltage, so that continuously adjustable positive voltage and negative voltage output are realized.

Description

A kind of continuously adjustable intelligent power module
Technical field
The present invention relates to a kind of power module, specifically a kind of continuously adjustable intelligent power module.
Background technology
In contemporary electronic systems, the application of power module is very extensive, but existing power module, often output voltage has been designed to fixed value, cannot, according to user's actual user demand, adjust magnitude of voltage; At present, in published line related module patent, the patent No. is 201120486108.8 " a kind of multiple-output electric power module ", this patent of invention discloses a kind of multiple-output electric power module, but its output voltage is fixed value, can not be according to regulation voltage level, and negative voltage output cannot be provided; The patent No. is 200920204482.7 " a kind of power supply adaptor of adjustable voltage ", this patent of invention discloses a kind of power supply adaptor of adjustable voltage, although this power supply adaptor adjustable output voltage, but output voltage is selected a road output only in the voltage of eight kinds of fixing outputs, output voltage is not continuously adjustable, and negative voltage output cannot be provided.
Summary of the invention
The object of the present invention is to provide a kind of continuously adjustable intelligent power module, this power module adopts intelligent digitalized control, can need to regulate continuously output voltage according to user, and negative voltage output can be provided.
The technical solution adopted for the present invention to solve the technical problems is:
An intelligent power module, comprises single-chip microcomputer, and SCM peripheral is provided with coupled rectification filtering voltage stabilizing circuit, numeric keypad, LCDs and programmable digital potentiometer; The back-pressure change-over circuit that boosts that it is main body that described power module also comprises by DC-DC transducer, the output of rectification filtering voltage stabilizing circuit is as the input of DC-DC transducer, and DC-DC transducer is also connected with programmable digital potentiometer; The output that the positive output end of the back-pressure of boosting change-over circuit and negative output terminal are described power module, is also connected with fixed resistance between the negative output terminal of the back-pressure of boosting change-over circuit and programmable digital potentiometer.
Further, described DC-DC transducer adopts LT1617.
The positive output end of the back-pressure of boosting further, change-over circuit and secondary output are in series with respectively the first resettable fuse and the second resettable fuse.
In such scheme, rectification filtering voltage stabilizing circuit obtains the steady direct voltage without noise the alternating voltage of input by rectification, filtering and voltage stabilizing; DC-DC transducer is effectively exported the electric pressure converter of fixed voltage after changing input voltage, and the present invention forms voltage raising and reducing circuit by LT1617 as core parts; Digital programmable potentiometer gets final product the size of regulator potentiometer resistance according to different control signals; Resettable fuse is a kind of overcurrent Electronic Protection element, has overcurrent and overheating protection, automatically recovers dual-use function.
The invention has the beneficial effects as follows, the alternating voltage after rectifying and wave-filtering is boosted and processed with negative pressure, adopt single-chip microcomputer and programmable digital potentiometer to carry out intelligence to output voltage and regulate, realize continuously adjustable positive voltage and negative voltage output.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described:
Fig. 1 is schematic block circuit diagram of the present invention;
Fig. 2 is the back-pressure change-over circuit schematic diagram that boosts in the present invention.
Embodiment
As shown in Figure 1, outer coupled rectification filtering voltage stabilizing circuit 1, numeric keypad 3, the LCDs 4 and programmable digital potentiometer R2 of being arranged with of single-chip microcomputer 2; Described power module also comprises the back-pressure change-over circuit 6 that boosts consisting of for main body DC-DC transducer 5, and the output of rectification filtering voltage stabilizing circuit 1 is as the input Vin of DC-DC transducer 5, and DC-DC transducer 5 is also connected with programmable digital potentiometer R2; The positive output Vout+ that the positive output end of the back-pressure of boosting change-over circuit 6 and negative output terminal are described power module and negative output Vout-, be also connected with fixed resistance R1 between the negative output terminal of the back-pressure of boosting change-over circuit 6 and programmable digital potentiometer R2; Shown in Fig. 2, DC-DC transducer adopts LT1617, and the pin 5 of LT1617 is connected with the output of rectification filtering voltage stabilizing circuit 1, and pin 3 is connected with programmable digital potentiometer R2, between pin 1 and pin 5, is connected with inductance L 1; The ground connection that is connected with 2 pins of LT1617 by capacitor C 1, plays filter action to Vin; LT1617, inductance L 1, diode Z1 and capacitor C 4 are interconnected to constitute voltage up converting circuit, and the output of voltage up converting circuit is the positive output Vout+ of described power module; LT1617, inductance L 1, capacitor C 2, capacitor C 3, inductance L 2 and diode Z2 are interconnected to constitute back-pressure change-over circuit, and the output of back-pressure change-over circuit is the negative output Vout-of described power module; The output of voltage up converting circuit is also in series with the first resettable fuse F1, and the output of back-pressure change-over circuit is also in series with the second resettable fuse F2.
During work, rectification filtering voltage stabilizing circuit 1 obtains the alternating voltage of input steadily without the direct voltage of noise by rectification, filtering and voltage stabilizing, and this direct voltage is single-chip microcomputer 2 and LCDs 4 power supplies, and as the input of the back-pressure conversion circuit 6 of boosting, during the pliotron conducting of DT1617 inside, input voltage vin is inductance L 1 charging, and inductance L 1 converts electrical energy into magnetic field energy and stores, when the pliotron of DT1617 inside turn-offs, inductance L 1 is converted to electric field energy by the magnetic field energy of storage, and this energy offers output voltage V out+ after superposeing with input voltage, the stack that is converted to electric energy due to this voltage magnetic field energy that is input voltage and inductance forms afterwards, so output voltage V out+ is higher than input voltage vin, boost conversion process completes, the output voltage values of Vout+ is determined by the ratio of fixed resistance R1 and programmable digital potentiometer R2, diode Z1 is the main buffer action that rises in booster circuit, and when the pliotron in DT1617 inside is closed, the cathode voltage of diode Z1 forces down than negative electricity, and now diode Z1 oppositely ends, when the pliotron of DT1617 inside disconnects, the energy after two kinds of stacks is outwards powered by diode Z1, diode Z1 forward conduction now, and capacitor C 4 plays the effect of the Noise and Interference composition in filtering output voltage V out+, on the other hand, 2 electric discharges of 2 pairs of inductance L of capacitor C, inductance L 2 also converts electrical energy into magnetic field energy and stores, when the pliotron conducting of DT1617 inside, diode Z2 bears negative voltage and oppositely cut-off, and inductance L 1 and L2 convert electrical energy into magnetic field energy simultaneously and store, when the pliotron of DT1617 inside turn-offs, diode Z2 bears positive voltage and conducting, inductance L 1 is converted to electric energy by the magnetic field energy of storage, and this energy charges to capacitor C 2 by diode Z2 after superposeing with input voltage vin, inductance L 2 is converted to electric energy by the magnetic field energy of storage simultaneously, release energy and maintain output voltage V out-, when the pliotron in DT1617 inside turn-offs, inductance L 1 and L2 are converted to electric energy by the magnetic field energy of storage simultaneously, L1 charges to C2, L2 releases energy and maintains output voltage V out-, back-pressure transfer process completes, capacitor C 3 plays the effect of the Noise and Interference composition in filtering output voltage V out-, the pliotron of DT1617 inside continues the process of turn-on and turn-off always, the direct-flow positive voltage Vin of input is converted to output negative voltage Vout-, output voltage V out-is determined by the ratio of fixed resistance R1 and programmable digital potentiometer R2, output voltage V out+ and the Vout-of the back-pressure of boosting change-over circuit 6 meet formula: | Vout|=|Vref|*(R1/R2+1), thus, only need to be by the desired magnitude of voltage of numeric keypad 3 input, LCDs 4 can show inputted magnitude of voltage in real time, single-chip microcomputer 2 can calculate the resistance value that programmable digital potentiometer R2 should adjust according to described formula, and output signal adjusts programmable digital potentiometer R2, the output at the back-pressure change-over circuit 6 that boosts has just obtained our needed voltage Vout+ and Vout-so, under normal circumstances, the operating current of power module outlet is much smaller than the maximum overload electric current of the first resettable fuse F1 and the second resettable fuse F2, F1 and F2 normal operation, when being short-circuited or transship, the large electric current of F1 and F2 of flowing through makes its collection temperature rise, F1 and F2 are phase step type and adjourn high-impedance state, electric current is by rapid pinch off, thereby circuit is carried out fast, limit accurately and protect, its small electric current makes circuit always in guard mode, after fault is got rid of, its collection temperature drop is low, F1 and F2 revert to normal condition, compare without artificial replacing with traditional fuse.
The above, be only preferred embodiment of the present invention, not the present invention done to any pro forma restriction; Any those of ordinary skill in the art, do not departing from technical solution of the present invention scope situation, all can utilize method and the technology contents of above-mentioned announcement to make many possible changes and modification to technical solution of the present invention, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not depart from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, be equal to replacements, equivalence changes and modify, all still belong in the scope that technical solution of the present invention protects.

Claims (3)

1. a continuously adjustable intelligent power module, it is characterized in that, described power module comprises single-chip microcomputer (2), outer coupled rectification filtering voltage stabilizing circuit (1), numeric keypad (3), the LCDs (4) and programmable digital potentiometer (R2) of being arranged with of single-chip microcomputer (2); Described power module also comprises the back-pressure change-over circuit (6) that boosts consisting of for main body DC-DC transducer (5), the output of rectification filtering voltage stabilizing circuit (1) is as the input of DC-DC transducer (5), and DC-DC transducer (5) is also connected with programmable digital potentiometer (R2); The output that the positive output end of the back-pressure of boosting change-over circuit (6) and negative output terminal are described power module, is also connected with fixed resistance (R1) between the negative output terminal of the back-pressure of boosting change-over circuit (6) and programmable digital potentiometer (R2).
2. a kind of continuously adjustable intelligent power module according to claim 1, is characterized in that, described DC-DC transducer (5) adopts LT1617.
3. a kind of continuously adjustable intelligent power module according to claim 1 and 2, it is characterized in that, described in the boost positive output end of back-pressure change-over circuit (6) and secondary output be in series with respectively the first resettable fuse (F1) and the second resettable fuse (F2).
CN201310505338.8A 2013-10-24 2013-10-24 Continuously adjustable intelligent power module Pending CN103532394A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104967295A (en) * 2015-06-12 2015-10-07 深圳大学 Medium and small power voltage booster capable of adjusting positive and negative high voltage output
CN105116950A (en) * 2015-09-29 2015-12-02 广西职业技术学院 High-efficiency and low-ripple numerical control DC voltage stabilizing power source
CN106249791A (en) * 2016-08-26 2016-12-21 成都众乐泰科技有限公司 A kind of based on variable-resistance DC DC change-over circuit
CN107748589A (en) * 2017-10-18 2018-03-02 京东方科技集团股份有限公司 A kind of adjustable circuit of output voltage and its voltage adjusting method and display device
CN109884947A (en) * 2019-03-18 2019-06-14 吉林建筑大学 A kind of microorganism electrolysis power case
CN110190732A (en) * 2019-04-15 2019-08-30 华中科技大学 A kind of power supply and driving circuit of driving chip

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CN202978723U (en) * 2012-11-28 2013-06-05 滁州学院 Numerical-control stabilized power supply circuit

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104967295A (en) * 2015-06-12 2015-10-07 深圳大学 Medium and small power voltage booster capable of adjusting positive and negative high voltage output
CN105116950A (en) * 2015-09-29 2015-12-02 广西职业技术学院 High-efficiency and low-ripple numerical control DC voltage stabilizing power source
CN105116950B (en) * 2015-09-29 2017-03-29 广西职业技术学院 A kind of Digital DC Voltage-stabilized Power Source of high efficiency low ripple
CN106249791A (en) * 2016-08-26 2016-12-21 成都众乐泰科技有限公司 A kind of based on variable-resistance DC DC change-over circuit
CN107748589A (en) * 2017-10-18 2018-03-02 京东方科技集团股份有限公司 A kind of adjustable circuit of output voltage and its voltage adjusting method and display device
CN109884947A (en) * 2019-03-18 2019-06-14 吉林建筑大学 A kind of microorganism electrolysis power case
CN110190732A (en) * 2019-04-15 2019-08-30 华中科技大学 A kind of power supply and driving circuit of driving chip
CN110190732B (en) * 2019-04-15 2020-06-09 华中科技大学 Power supply and drive circuit of drive chip

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Application publication date: 20140122