CN203251457U - Multifunctional controller circuit with broad voltage range - Google Patents
Multifunctional controller circuit with broad voltage range Download PDFInfo
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- CN203251457U CN203251457U CN 201220332830 CN201220332830U CN203251457U CN 203251457 U CN203251457 U CN 203251457U CN 201220332830 CN201220332830 CN 201220332830 CN 201220332830 U CN201220332830 U CN 201220332830U CN 203251457 U CN203251457 U CN 203251457U
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Abstract
The utility model discloses a multifunctional controller circuit with a broad voltage range. The multifunctional controller circuit comprises a buck-boost converting circuit which can synchronously increase the voltage and linearly reduce the voltage, and the multifunctional controller circuit also comprises an input power source. A switch is connected between functional control terminals, function transformation is achieved by a slight-touch switch or a tight-lock switch, and different functional combinations can be selected through a specific pin. According to the utility model, one product can satisfy application requirements in different power supplying occasions and occasions with different functional requirements, so that clients can make a simple selection, and the cost is reduced.
Description
Technical field
The utility model belongs to electronic product control circuit field, relates to a kind of wide-voltage range control drive circuit.
Background technology
Under the overall situation of advocating at present efficient energy-saving, the LED flashlight more and more is subject to liking of people with its low-power, the characteristics of low pollution, high brightness and high life.In order to cater to the market demand, these LED flashlights have generally also configured some other functions, such as, energy-conservation, self-defence and function of emergency treatment, thus be referred to as high-end LED flashlight.Concrete function generally comprises the various functions such as entirely bright, half bright, 25% bright, quick-fried sudden strain of a muscle and SOS, and different according to the customer group, its function is selected, configuration has difference.The driving power of this high-end LED flashlight requires to be the bigger the better, and generally its power supply has a joint rechargeable battery, two joint rechargeable batteries or a joint 3.7V lithium battery.For different batteries, its drive circuit has different differences: a joint, two batteries belong to the Drive and Control Circuit of boosting; The rechargeable battery series-feds such as one joint 3.7V lithium battery or more piece ni-mh then need step-down and the two kinds of drive patterns that boost simultaneously.
Because these general meetings of high-end LED flashlight manufacturer are according to client's demand, produce multiple flashlight with different configuration specifications, thereby cause the flashlight under the various configuration specifications to possess different control circuits, and present employed circuit also exist various problems.Such as Fig. 1, this circuit topology is the driving of boosting, and low voltage power supply does not have problems, but when voltage is higher: Vin〉Vf (LED operating voltage)+Vd (switch tube voltage)+Vref (sample resistance voltage), existing problems; LED is in when flicker, because Vin is by inductance, the LED formation path that falls down to the ground, LED closes constantly, therefore must add switch (as shown in Figure 2) at LED.Need to add switch at LED equally when in like manner, DC-DC step-down chip is practical: shown in Fig. 3 topological structure.Therefore, in process of production, in the face of the different application demand, the producer can select different circuit: voltage increase and current constant chip+functional chip, single function step-down chip, step-down constant current chip+functional chip and other function combined chip.High-end LED flashlight usage, functional requirement are of a great variety, and therefore each consumption is not understood many yet, if by the standby stock of above-mentioned usage, not only purchase cost, production cost are also relatively high, and technique is various, can't realize that plurality of specifications is unified to produce.
Fig. 7 and Fig. 8 are that existing market DC-DC commonly used rises or the step-down chip is joined the modular circuit schematic diagram that functional chip is realized, this class usage usage comparison is flexible, but element, chip kind are many, more loaded down with trivial details.In addition, for some small size flashlights, because element is many, the PCB fabric swatch was very difficult when it was produced.
Therefore, need the flashlight that a kind of simply and easily single drive circuit of design is fit to different specifications badly.
The utility model content
The purpose of this utility model is to provide a kind of wide-voltage range multifunctional controller circuit, satisfies different powered battery demands and mode controlling mode, and reduction client product cost, warehousing pressure are also enhanced productivity.
For reaching above purpose, the solution that this patent adopts is:
A kind of LED control drives chip, it comprises logic control circuit Logic ctrol, drive circuit Driver, loop control circuit Loop ctrol, ternary control logic circuit Tri ctrol, error amplifier Erro, the first field effect transistor N1, the second field effect transistor N2, resistance R and rectifying tube P1, the normal phase input end of error amplifier Erro is the pin Rs end that LED control drives chip, its inverting input is connected with an end of resistance R, and its output is connected with loop control circuit Loop ctrol; The drain electrode of the other end of resistance R and the second field effect transistor N2 is joined, and resistance R is controlled the pin Cs end that drives chip with the drain electrode phase contact of the second field effect transistor N2 as LED; The source ground of the second field effect transistor N2, the grid of the second field effect transistor N2 is connected with loop control circuit Loop ctrol, a capacitor C in parallel between the drain electrode of the second field effect transistor N2 and the grid; Loop control circuit Loop ctrol also is connected with logic control circuit Logic ctrol with drive circuit Driver respectively; Drive circuit Driver is connected respectively with the grid of the first field effect transistor N1 and rectifying tube P1, and the drain electrode of rectifying tube P1 is the pin Vout end that LED control drives chip; The source electrode of rectifying tube P1 is connected with the drain electrode of the first field effect transistor N1, and tie point is as the switch drive pin SW as LED control driving chip, the source ground of the first field effect transistor N1; The input of logic control circuit Logic ctrol is as the pin En end of LED control driving chip; The output of logic control circuit Logic ctrol is connected with the input of ternary control logic circuit Tri ctrol, and the output of ternary control logic circuit Tri ctrol is as the pin Mod end of LED control driving chip.
A kind of wide-voltage range multifunctional controller circuit that uses above-mentioned LED control to drive chip, it comprises that battery, switch S 1, capacitor C in, electrochemical capacitor Cout, LED control drive chip, inductance L, LED lamp and current sampling resistor Rs, the positive pole of switch S 1 one ends and battery, the other end is connected with the end of capacitor C in, Cin other end ground connection; The other end of switch S 1 also with an end of inductance L, and the LED control Vin that drives chip be connected with the EN end; Another termination LED control of inductance L drives the switch drive end SW end of chip; The Vout end that LED control drives chip links to each other the other end ground connection of electrochemical capacitor Cout with the end of electrochemical capacitor Cout; The positive pole of LED lamp is connected with the Vout end that LED control drives chip, and the negative pole of LED lamp is connected with the Rs end that LED control drives chip; Current sampling resistor Rs one end is connected with the Rs end that LED control drives chip, and the other end is connected with the Cs end that LED control drives chip.
Further, the Mod end that described LED control drives chip is in ground connection, unsettled and when connecing the Vout state, respectively corresponding three kinds of mode combinations: two functions, three functions and five-function.
Described two functions are that LED lamp 100% is bright and 50% bright; Three functions refer to 100% bright, the 50% bright and quick-fried sudden strain of a muscle of LED lamp; Five-function refers to that the LED lamp is 100% bright, 50% bright, 25% bright, quick-fried sudden strain of a muscle and the bright method of SOS.
A kind of wide-voltage range multifunctional controller circuit that uses above-mentioned LED control to drive chip, it comprises that battery, switch S 1, capacitor C in, electrochemical capacitor Cout, LED control drive chip, inductance L, LED lamp and current sampling resistor Rs, the positive pole of switch S 1 one ends and battery, the other end is connected with the EN end that LED control drives chip, the positive pole of battery also is connected Cin other end ground connection with the end of Cin, an end of inductance L and the Vin end that LED control drives chip; Another termination LED control of inductance L drives the switch drive end SW end of chip; The Vout end that LED control drives chip links to each other the other end ground connection of electrochemical capacitor Cout with the end of electrochemical capacitor Cout; The positive pole of LED lamp is connected with the Vout end that LED control drives chip, and the negative pole of LED lamp is connected with the Rs end that LED control drives chip; Current sampling resistor Rs one end is connected with the Rs end that LED control drives chip, and the other end is connected with the Cs end that LED control drives chip.
Further, the Mod end that described LED control drives chip is in ground connection, unsettled and when connecing the Vout state, respectively corresponding three kinds of mode combinations: three functions, four functions or six functions.
Described three functions are 100% bright, the 50% bright and LED lamp shutoffs of LED lamp; Four functions refer to that the LED lamp is 100% bright, 50% bright, quick-fried sudden strain of a muscle and LED lamp turn-off; Six functions refer to that the LED lamp is 100% bright, 50% bright, 25% bright, quick-fried sudden strain of a muscle, the bright method of SOS and LED lamp turn-off.
Owing to having adopted above technical scheme, the beneficial effect that the utlity model has is: the client can only need a kind of chip IC of buying, can tackle different clients' application function demand; Only need seldom the kind pcb board during production, make by different components and parts pasters that PCB is general just can to satisfy whole plate production requirement, simplify and produce stock, save human cost.
Description of drawings
Fig. 1 is existing DC-DC Boost topology structure chart.
Fig. 2 is the DC-DC Boost topology structure chart of existing LED path belt switch.
Fig. 3 is the DC-DC buck topology structure chart of existing LED path belt switch.
Fig. 4 is boost chip and functional chip usage schematic diagram of existing DC-DC constant current.
Fig. 5 is the synchronous constant-current decompression chip of existing DC-DC and functional chip usage schematic diagram.
Fig. 6 is a tight lock-switch usage of embodiment of the utility model schematic diagram.
Fig. 7 is another embodiment touch-switch usage schematic diagram of the utility model.
Fig. 8 is the utility model LED control drive circuit schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing illustrated embodiment this patent is further described.
Wide-voltage range multifunctional controller circuit of the present utility model, shown in Fig. 4 (tight lock-switch usage), drive chip, inductance L, LED lamp and current sampling resistor Rs by battery (voltage is Vin), switch S 1, capacitor C in, electrochemical capacitor Cout, LED control and form.The positive pole of switch S 1 one ends and battery (drawing is shown as the Vin end), the other end is connected with the end of capacitor C in, Cin other end ground connection; The other end of switch S 1 also with the A of inductance L end, and the LED control Vin that drives chip be connected with the EN end; The B termination LED control of inductance L drives the switch drive end SW end of chip; The Vout end that LED control drives chip links to each other the other end ground connection of electrochemical capacitor Cout with the end of electrochemical capacitor Cout; The positive pole of LED lamp is connected with the Vout end that LED control drives chip, and the negative pole of LED lamp is connected with the Rs end that LED control drives chip; Current sampling resistor Rs one end is connected with the Rs end that LED control drives chip, and the other end is connected with the Cs end that LED control drives chip.LED control drives chip and also has earth terminal GND, wherein, EN end is pattern conversion and control end, and the Mod end is that control end is selected in the function combination: totally three kinds of mode combinations, ground connection, unsettled and connect the respectively corresponding three kinds of mode combinations of Vout: two functions, three functions and five-function.LED control drives chip and comprises logic control circuit Logic ctrol, drive circuit Driver, loop control circuit Loop ctrol, ternary control logic circuit Tri ctrol, error amplifier Erro, the first field effect transistor N1, the second field effect transistor N2, resistance R and rectifying tube P1.The normal phase input end of error amplifier Erro is the pin Rs end that LED control drives chip, and its inverting input is connected with an end of resistance R, and its output is connected with loop control circuit Loop ctrol; The drain electrode of the other end of resistance R and the second field effect transistor N2 is joined, and resistance R is controlled the pin Cs end that drives chip with the drain electrode phase contact of the second field effect transistor N2 as LED; The source ground of the second field effect transistor N2, the grid of the second field effect transistor N2 is connected with loop control circuit Loop ctrol, a capacitor C in parallel between the drain electrode of the second field effect transistor N2 and the grid; Loop control circuit Loop ctrol also is connected with logic control circuit Logic ctrol with drive circuit Driver respectively; Drive circuit Driver is connected respectively with the grid of the first field effect transistor N1 and rectifying tube P1, and the drain electrode of rectifying tube P1 is the pin Vout end that LED control drives chip; The source electrode of rectifying tube P1 is connected with the drain electrode of the first field effect transistor N1, and tie point is as the switch drive pin SW as LED control driving chip, the source ground of the first field effect transistor N1; The input of logic control circuit Logic ctrol is as the pin En end of LED control driving chip; The output of logic control circuit Logic ctrol is connected with the input of ternary control logic circuit Tri ctrol, and the output of ternary control logic circuit Tri ctrol is as the pin Mod end of LED control driving chip.When Vin＜Vf (LED operating voltage)+Vd (switch tube voltage)+Vref (sample resistance voltage), circuit working is in the mode of operation of boosting, the second field effect transistor N2 is as the complete conducting of power switch pipe, the first field effect transistor N1 charges to inductance L as the power drive pipe, rectifying tube P1 forward fills to Cout, the electricity reverse blocking, error amplifier Erro monitoring LED operating current, by loop control circuit LOOP ctrol, drive circuit Driver controls opening of the first field effect transistor N1, close duty and recently adjust output voltage V out, make it reach constant current driving requirement thereby reach monitoring LED electric current; As Vin〉during Vf+Vd+Vref, circuit working is at linear decompression mode, the second field effect transistor N2 adjusts the plumber as linearity and does, the first field effect transistor N1 turn-offed as power switch pipe and did not work this moment, rectifying tube P1 is as the complete conducting of power switch, error amplifier Erro monitors the LED operating current, controls the conducting internal resistance of the linear second field effect transistor N2 of adjustment of the second field effect transistor N2 grid voltage by loop control circuit LOOP ctrol, makes it be operated in the purpose of constant current driving condition thereby reach adjustment LED electric current.When whole circuit was closed, the second field effect transistor N2 turn-offed, and guarantees that the LED path is turned off, and this moment is in the situation that the higher LED of supply power voltage is not luminous.The difficult point of two kinds of mode circuits of this circuit is the judgement of voltage and the selection of mode of operation.
Shown in Fig. 5 (touch-switch usage), drive chip, inductance L, LED lamp and current sampling resistor Rs by battery (voltage is Vin), switch S 1, capacitor C in, electrochemical capacitor Cout, LED control and form.The positive pole of switch S 1 one ends and battery (drawing is shown as the Vin end), the other end is connected with the EN end that LED control drives chip, and the positive pole of battery also is connected Cin other end ground connection with the end of Cin, the A end of inductance L and the Vin end that LED control drives chip; The B termination LED control of inductance L drives the switch drive end SW end of chip; The Vout end that LED control drives chip links to each other the other end ground connection of electrochemical capacitor Cout with the end of electrochemical capacitor Cout; The positive pole of LED lamp is connected with the Vout end that LED control drives chip, and the negative pole of LED lamp is connected with the Rs end that LED control drives chip; Current sampling resistor Rs one end is connected with the Rs end that LED control drives chip, and the other end is connected with the Cs end that LED control drives chip.In the present embodiment, LED control drives the MOD end ground connection, unsettled or connect Vout, respectively corresponding three functions, four functions or six functions of chip; Touch switch can provide pulse signal, this triggering signal to make logic control Logicctrol go the practical function conversion by function combination and order that the Mod pin sets to the EN end.
Tight lock-switch refers to click switch closure, clicks the switch disconnection again, so repeatedly; Touch-switch refers to that then finger presses down the switch disconnection, switch closure when hand unclamps, from use function touch-switch usage than tight lock-switch with turn-off function of fado, otherwise circuit can not turn-off always: tight lock-switch three functions for example: 100% bright, 25% bright and quick-fried sudden strain of a muscle; Touch-switch three functions then become: 100% bright, 25% bright, quick-fried sudden strain of a muscle and shutoff.EN is the mode conversion function selecting side, take touch-switch three functions as example, provides signal by switch and selects in turn 100% bright, 25% bright, quick-fried sudden strain of a muscle and turn-off function.
Wherein, the functional definition of tight lock-switch usage refers to: two functions are that LED lamp 100% is bright and 50% bright, three functions refer to 100% bright, the 50% bright and quick-fried sudden strain of a muscle (frequency 5 – 12Hz) of LED lamp, and five-function refers to that the LED lamp is 100% bright, 50% bright, 25% bright, quick-fried sudden strain of a muscle and the bright method of SOS; The functional definition of touch-switch usage refers to: three functions are 100% bright, the 50% bright and LED lamp shutoffs of LED lamp, four functions refer to that the LED lamp is 100% bright, 50% bright, quick-fried sudden strain of a muscle and LED lamp turn-off, and six functions refer to that the LED lamp is 100% bright, 50% bright, 25% bright, quick-fried sudden strain of a muscle, the bright method of SOS and LED lamp turn-off.
That the pattern conversion designs pays particular attention to when using tight lock-switch.Switch disconnects Toff in time period time, and whole circuit is by the Cout capacitances to supply power, and actual maximum requirement of use habit pattern conversion Toff time continues about 8 seconds, and then switch is again closed.In time, Cout will keep certain voltage at whole Toff, otherwise the complete circuit state of Cout tele-release is reset, and circuit function can be got back to first state.Therefore at Toff in the time period, the circuit power consumption design is low especially.
The above-mentioned description to embodiment is can understand and use the utility model for ease of those skilled in the art.The person skilled in the art obviously can easily make various modifications to these embodiment, and needn't pass through performing creative labour being applied in the General Principle of this explanation among other embodiment.Therefore, the utility model is not limited to the embodiment here, and those skilled in the art should be within protection range of the present utility model for improvement and modification that the utility model is made according to announcement of the present utility model.
Claims (7)
1. a LED control drives chip, it is characterized in that: it comprises logic control circuit Logic ctrol, drive circuit Driver, loop control circuit Loop ctrol, ternary control logic circuit Tri ctrol, error amplifier Erro, the first field effect transistor N1, the second field effect transistor N2, resistance R and rectifying tube P1, the normal phase input end of error amplifier Erro is the pin Rs end that LED control drives chip, its inverting input is connected with an end of resistance R, and its output is connected with loop control circuit Loop ctrol; The drain electrode of the other end of resistance R and the second field effect transistor N2 is joined, and resistance R is controlled the pin Cs end that drives chip with the drain electrode phase contact of the second field effect transistor N2 as LED; The source ground of the second field effect transistor N2, the grid of the second field effect transistor N2 is connected with loop control circuit Loop ctrol, a capacitor C in parallel between the drain electrode of the second field effect transistor N2 and the grid; Loop control circuit Loop ctrol also is connected with logic control circuit Logic ctrol with drive circuit Driver respectively; Drive circuit Driver is connected respectively with the grid of the first field effect transistor N1 and rectifying tube P1, and the drain electrode of rectifying tube P1 is the pin Vout end that LED control drives chip; The source electrode of rectifying tube P1 is connected with the drain electrode of the first field effect transistor N1, and tie point is as the switch drive pin SW as LED control driving chip, the source ground of the first field effect transistor N1; The input of logic control circuit Logic ctrol is as the pin En end of LED control driving chip; The output of logic control circuit Logic ctrol is connected with the input of ternary control logic circuit Tri ctrol, and the output of ternary control logic circuit Tri ctrol is as the pin Mod end of LED control driving chip.
2. a right to use requires 1 described LED control to drive the wide-voltage range multifunctional controller circuit of chip, it is characterized in that: it comprises that battery, switch S 1, capacitor C in, electrochemical capacitor Cout, LED control drive chip, inductance L, LED lamp and current sampling resistor Rs, the positive pole of switch S 1 one ends and battery, the other end is connected with the end of capacitor C in, Cin other end ground connection; The other end of switch S 1 also with an end of inductance L, and the LED control Vin that drives chip be connected with the EN end; Another termination LED control of inductance L drives the switch drive end SW end of chip; The Vout end that LED control drives chip links to each other the other end ground connection of electrochemical capacitor Cout with the end of electrochemical capacitor Cout; The positive pole of LED lamp is connected with the Vout end that LED control drives chip, and the negative pole of LED lamp is connected with the Rs end that LED control drives chip; Current sampling resistor Rs one end is connected with the Rs end that LED control drives chip, and the other end is connected with the Cs end that LED control drives chip.
3. wide-voltage range multifunctional controller circuit as claimed in claim 2 is characterized in that: the Mod end that described LED control drives chip is in ground connection, unsettled and when connecing the Vout state, respectively corresponding three kinds of mode combinations: two functions, three functions and five-function.
4. wide-voltage range multifunctional controller circuit as claimed in claim 3 is characterized in that: described two functions are that LED lamp 100% is bright and 50% bright; Three functions refer to 100% bright, the 50% bright and quick-fried sudden strain of a muscle of LED lamp; Five-function refers to that the LED lamp is 100% bright, 50% bright, 25% bright, quick-fried sudden strain of a muscle and the bright method of SOS.
5. a right to use requires 1 described LED control to drive the wide-voltage range multifunctional controller circuit of chip, it is characterized in that: it comprises that battery, switch S 1, capacitor C in, electrochemical capacitor Cout, LED control drive chip, inductance L, LED lamp and current sampling resistor Rs, the positive pole of switch S 1 one ends and battery, the other end is connected with the EN end that LED control drives chip, the positive pole of battery also is connected Cin other end ground connection with the end of Cin, an end of inductance L and the Vin end that LED control drives chip; Another termination LED control of inductance L drives the switch drive end SW end of chip; The Vout end that LED control drives chip links to each other the other end ground connection of electrochemical capacitor Cout with the end of electrochemical capacitor Cout; The positive pole of LED lamp is connected with the Vout end that LED control drives chip, and the negative pole of LED lamp is connected with the Rs end that LED control drives chip; Current sampling resistor Rs one end is connected with the Rs end that LED control drives chip, and the other end is connected with the Cs end that LED control drives chip.
6. wide-voltage range multifunctional controller circuit as claimed in claim 5 is characterized in that: the Mod end that described LED control drives chip is in ground connection, unsettled and when connecing the Vout state, respectively corresponding three kinds of mode combinations: three functions, four functions or six functions.
7. wide-voltage range multifunctional controller circuit as claimed in claim 6 is characterized in that: described three functions are that the LED lamp is 100% bright, 50% bright and LED lamp turn-offs; Four functions refer to that the LED lamp is 100% bright, 50% bright, quick-fried sudden strain of a muscle and LED lamp turn-off; Six functions refer to that the LED lamp is 100% bright, 50% bright, 25% bright, quick-fried sudden strain of a muscle, the bright method of SOS and LED lamp turn-off.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220332830 CN203251457U (en) | 2012-07-10 | 2012-07-10 | Multifunctional controller circuit with broad voltage range |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220332830 CN203251457U (en) | 2012-07-10 | 2012-07-10 | Multifunctional controller circuit with broad voltage range |
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| CN203251457U true CN203251457U (en) | 2013-10-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167778A (en) * | 2014-07-24 | 2014-11-26 | 深圳天珑无线科技有限公司 | Power supply circuit |
| CN104768267A (en) * | 2014-01-02 | 2015-07-08 | 深圳市海洋王照明工程有限公司 | Wide- voltage and low-power LED constant-current driving circuit |
| CN107406033A (en) * | 2015-03-20 | 2017-11-28 | 罗姆股份有限公司 | Switch drive equipment, luminaire and vehicle |
-
2012
- 2012-07-10 CN CN 201220332830 patent/CN203251457U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104768267A (en) * | 2014-01-02 | 2015-07-08 | 深圳市海洋王照明工程有限公司 | Wide- voltage and low-power LED constant-current driving circuit |
| CN104167778A (en) * | 2014-07-24 | 2014-11-26 | 深圳天珑无线科技有限公司 | Power supply circuit |
| CN107406033A (en) * | 2015-03-20 | 2017-11-28 | 罗姆股份有限公司 | Switch drive equipment, luminaire and vehicle |
| US10728980B2 (en) | 2015-03-20 | 2020-07-28 | Rohm Co., Ltd. | Switch driving device, light-emitting device, and vehicle |
| CN107406033B (en) * | 2015-03-20 | 2021-02-23 | 罗姆股份有限公司 | Switch drive device, light emitting device, and vehicle |
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Granted publication date: 20131023 Termination date: 20150710 |
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