CN211508908U - Boost circuit, boost regulating circuit and printer - Google Patents
Boost circuit, boost regulating circuit and printer Download PDFInfo
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- CN211508908U CN211508908U CN202020283797.1U CN202020283797U CN211508908U CN 211508908 U CN211508908 U CN 211508908U CN 202020283797 U CN202020283797 U CN 202020283797U CN 211508908 U CN211508908 U CN 211508908U
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Abstract
The utility model belongs to the technical field of the printer, the technical problem of the unsatisfied high drive voltage shower nozzle demand of drive voltage of print head among the prior art has been solved. The utility model provides a boost circuit, boost regulating circuit and printer. The booster circuit comprises a first energy storage unit, a second energy storage unit and a switch module; the power supply end of the first energy storage unit is connected with a power supply, the output end of the second energy storage unit is connected with a load, when the switch module is closed, the power supply charges the first energy storage unit, and the second energy storage unit independently supplies power to the load; when the switch module is disconnected, the first energy storage unit is communicated with the second energy storage unit, the first energy storage unit charges the second energy storage unit, and meanwhile the first energy storage unit and the second energy storage unit simultaneously supply power to a load. The utility model discloses can obtain a stable, lasting step-up voltage.
Description
Technical Field
The utility model relates to a printer technical field especially relates to a boost circuit, boost regulator circuit and printer.
Background
The driving voltage value of the existing common nozzle is relatively small, while the driving voltage value of some types of nozzles such as a starlight 1024GS nozzle is relatively high, so that a booster circuit is needed to be arranged, and the starlight nozzle can be driven after the input voltage value is boosted.
In the prior art, there is a technology that a boost type DC-DC chip (i.e. a DC chopper circuit) is used to boost an input voltage and then drive a printer head requiring a high driving voltage, as shown in fig. 1, the boost circuit includes: the method comprises the following steps: the BOOST circuit comprises a main controller, a BOOST circuit, a filter circuit and a feedback circuit; the main controller 1 comprises a processor ARM and a programmable logic module FPGA/MCU, at least one digital pulse width regulator is arranged in the programmable logic module, the processing module receives a nozzle driving reference signal Vcom sent by an upper computer and sends the nozzle driving reference signal Vcom to the digital pulse width regulator of the programmable logic module, and a bandwidth modulation signal output by the digital pulse width regulator is processed by a booster circuit and a filter circuit in sequence and then outputs a nozzle waveform voltage driving signal VCOM; the feedback circuit collects a nozzle voltage driving signal VCOM output by the filter circuit and feeds back the VCOM to the main controller.
The booster circuit in the driving circuit is an amplifying circuit which amplifies a bandwidth modulation signal sent by a pulse width modulator in the main controller, thereby realizing the increase of voltage; the circuit is realized mainly by an operational amplifier, which can cause that a booster circuit adopting a common operational amplifier is difficult to realize high voltage and heavy current and can not completely meet the requirement of driving voltage of a starlight 1024GS sprayer; the cost is very high if a booster circuit of a special amplifier is used.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a boost circuit, boost regulating circuit and printer for solve among the prior art not satisfied high drive voltage shower nozzle demand's of print head's drive voltage technical problem.
The utility model adopts the technical proposal that:
the utility model provides a booster circuit, which comprises a first energy storage unit, a second energy storage unit and a switch module;
the power supply end of the first energy storage unit is connected with a power supply, the output end of the second energy storage unit is connected with a load, when the switch module is closed, the power supply charges the first energy storage unit, and the second energy storage unit independently supplies power to the load; when the switch module is disconnected, the first energy storage unit is communicated with the second energy storage unit, the first energy storage unit charges the second energy storage unit, and meanwhile the first energy storage unit and the second energy storage unit simultaneously supply power to a load.
Preferably, the first energy storage unit comprises a first inductor, the second energy storage unit comprises a capacitor bank, and the switch module comprises a first diode and a switch module;
the one end of first inductance inserts input power, and the other end of first inductance is inserted to the positive pole concurrent point of switch module's one end, first diode, and switch module's the other end and the one end of first resistance are connected, and the other end of first resistance and the one end concurrent point ground connection of electric capacity group, the other end of electric capacity group and the other end of first diode are connected, and the both ends of electric capacity group connect the load simultaneously.
Preferably, the switch module includes a first MOS transistor and a second diode, a gate of the first MOS transistor is connected to the enable power supply, a common node of a source of the first MOS transistor and a cathode of the second diode is connected to one end of the first inductor, and a drain of the first MOS transistor and an anode of the second diode are connected to one end of the first resistor; one end of the first inductor and the filter circuit are connected to a power supply in a common-point mode, the other end of the filter circuit is grounded, and the capacitor bank comprises a plurality of capacitors connected in parallel.
Preferably, when the first MOS transistor is turned on, the first diode is turned off in the reverse direction; the power supply charges the first inductor, and meanwhile, the capacitor bank independently supplies power to the load;
when the first MOS tube is disconnected, the first diode is positively conducted; the first inductor is communicated with the capacitor bank, the capacitor bank is charged by the first inductor, and meanwhile the load is simultaneously supplied with power by the first inductor and the capacitor bank.
The utility model also provides a boost control circuit, include: the boost circuit comprises a controller circuit and a plurality of boost branches connected in parallel, wherein the boost branches are connected to the controller, and the output ends of the boost branches are connected with a load;
the boosting branch circuit comprises an initial voltage output circuit, a voltage regulating circuit, a feedback calibration circuit, a switch circuit and the boosting circuit;
the initial voltage output circuit is connected to the controller, the booster circuit is connected to the initial voltage output circuit, the output end of the booster circuit is connected to the voltage regulating circuit, the initial voltage output circuit is connected to the voltage regulating circuit, the voltage regulating circuit is connected to the controller, the input end of the feedback calibrating circuit is connected to the output end of the voltage regulating circuit, the input end of the switch circuit is connected to the output end of the feedback calibrating circuit, the switch circuit is connected to the controller, and the output end of the switch circuit is connected to the load.
Preferably, the initial voltage output circuit receives a voltage to be regulated, which is output by the controller, transmits the voltage to be regulated to the voltage boost circuit, and outputs a driving voltage signal of a corresponding load to the voltage regulation circuit;
the boosting circuit boosts the voltage to be regulated to the primary driving voltage of the corresponding load;
the voltage regulating circuit regulates the primary driving voltage to a driving voltage according with a load according to the driving voltage signal;
the feedback calibration circuit calibrates the driving voltage adjusted by the voltage regulating circuit to obtain a calibration driving voltage, and transmits the calibration driving voltage to the switching circuit;
the controller is to the voltage regulation voltage through switch circuit selects the correspondence the branch that steps up, and to preliminary driving voltage after the voltage regulation circuit pressure regulating judges whether need the pressure regulating again, and whether selects other the branch that steps up carries out the pressure regulating.
Preferably, the initial voltage output circuit includes: the circuit comprises a main controller, an eleventh capacitor, a twelfth capacitor, a thirteenth capacitor, a fourteenth capacitor, a fifteenth capacitor, a sixteenth capacitor, an eleventh resistor, a twelfth resistor, a thirteenth resistor and a fourteenth resistor;
a switching frequency setting pin RC of the main controller, one end of an eleventh capacitor and one end of an eleventh resistor are connected in common, the other end of the eleventh capacitor is grounded, the other end of the eleventh resistor and an input voltage pin VDD of the main controller are connected in common to a power supply, and a soft start time programming pin SS of the main controller is connected in series with a twelfth capacitor and grounded; an enabling pin of the main controller is connected with an enabling trigger circuit, an output pin COMP of an error amplifier, a thirteenth capacitor, a fourteenth capacitor, a twelfth resistor and an error amplification direction input end pin FB of the main controller form a control loop compensation network, the control loop compensation network is connected with the voltage regulating circuit, one end of a fifteenth capacitor and one end of the thirteenth resistor are connected with a current detection pin ISNS of the main controller at the same point, a grounding pin GND of the main controller and the other end of the fifteenth capacitor are grounded at the same point, the other end of the thirteenth resistor is connected with a drain electrode of a first MOS (metal oxide semiconductor) transistor of the boosting circuit, a gate driving pin GDRV of the main controller is connected with a fourteenth resistor in series and connected with a grid electrode of the first MOS transistor of the boosting circuit, and an output pin BP of the main controller is connected with a sixt;
the voltage regulating circuit comprises a third diode, a thirty-first resistor, a thirty-second resistor and a thirty-third resistor;
a thirty-first resistor and a thirty-second resistor are connected in series and then connected with a third diode in parallel to be connected to the output end of the booster circuit, the equipotential points of the thirty-first resistor, the thirty-second resistor and the thirty-third resistor are connected to the control loop compensation network of the initial voltage output circuit, and the other end of the thirty-third resistor is connected to a control unit;
the feedback calibration circuit comprises a forty-first resistor, a forty-second resistor, a forty-first capacitor, a forty-second diode, a display unit, a forty-third resistor, a forty-first resistor and a forty-second diode, wherein the forty-first resistor is connected to the output end of the voltage regulating circuit, one end of the forty-second resistor, one end of the forty-first capacitor, one end of the forty-second resistor, the cathode of the forty-second diode, the anode common point of the forty-second diode and the other end of the forty-first resistor are connected, the other end of the forty-second resistor, the other end of the forty-first capacitor and the anode common point of the forty-second diode are grounded, and the cathode of the forty-second diode is connected with a power supply; the display unit is connected with the forty-third resistor in series, and one end of the forty-third resistor and one end of the forty-first resistor are connected with the feedback output end in a point-sharing mode.
Preferably, the switching circuit includes a waveform conversion unit and a switching unit, the waveform conversion unit is connected to an output end of the feedback calibration circuit, the waveform conversion unit converts the calibration driving voltage into a high-voltage driving waveform, the high-voltage driving waveform drives a load, the switching unit is connected to the controller, and the controller controls the corresponding boosting branch circuit to be switched on or off through the switching unit.
Preferably, the enable trigger circuit comprises a fifty-first resistor, a second MOS transistor, a fifty-second resistor, a fifty-third resistor and a fifth diode, one end of the fifty-first resistor is connected to the gate of the second MOS transistor, the other end of the fifty-first resistor and one end of the fifty-second resistor are connected to the input source at a common point, the other end of the fifty-second resistor and the drain of the second MOS transistor are grounded at a common point, one end of the fifty-third resistor and the source of the second MOS transistor are connected to the enable pin of the main controller at a common point, and the other end of the fifty-third resistor is connected to the power supply.
The utility model also provides a printer, including many parallelly connected above-mentioned boost control circuit, still include the host computer, the host computer is to many boost control circuit distribution treats regulating voltage.
To sum up, the utility model has the advantages that:
the utility model provides a booster circuit, a boost regulating circuit and a printer;
the beneficial effects are that: the utility model discloses a booster circuit comprises a first energy storage unit, a second energy storage unit and a switch module;
the power supply end of the first energy storage unit is connected with a power supply, the output end of the second energy storage unit is connected with a load, when the switch module is closed, the power supply charges the first energy storage unit, and the second energy storage unit independently supplies power to the load; when the switch module is disconnected, the first energy storage unit is communicated with the second energy storage unit, the first energy storage unit charges the second energy storage unit, and meanwhile, the first energy storage unit and the second energy storage unit simultaneously supply power to a load, so that the voltage at two ends of the load is increased, and the purpose of boosting the voltage is fulfilled; this method can obtain a stable high voltage, and the circuit is simple and easy to implement.
Beneficial effects 2: the utility model discloses a boost regulating circuit includes controller and many parallelly connected branch circuits that step up, the branch circuit that steps up includes initial voltage output circuit, foretell boost circuit, regulating circuit and feedback calibration circuit, the controller will treat boost voltage transmission for the branch circuit that steps up, the initial voltage output circuit output of the branch circuit that steps up should treat boost voltage and step up the back through boost circuit, regulating circuit unit and feedback calibration circuit adjust and calibrate the voltage after stepping up, in order to satisfy the load demand, the controller acquires the preliminary driving voltage after the pressure regulating, judge whether satisfy the drive load requirement, if unsatisfied then step up again or select other branch circuits that step up to step up, whole regulating circuit stroke closed loop, guarantee output voltage stable, and the voltage step up becomes power height.
Beneficial effect 3: the utility model discloses a print head's drive circuit includes many parallelly connected above-mentioned boost control circuit and host computer, and every shower nozzle of printer all has many different boost circuit, can satisfy the step up of different drive waveforms, guarantees that print head works under rated drive voltage, guarantees to print effect and equipment life.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, without creative efforts, other drawings can be obtained according to these drawings, and these drawings are all within the protection scope of the present invention.
Fig. 1 is a schematic diagram of the working principle of the boost circuit provided in the background art of the present invention;
fig. 2 is a schematic block diagram of the working principle of the boost circuit in embodiment 1 of the present invention;
fig. 3 is a specific circuit diagram of the boost circuit in embodiment 2 of the present invention;
fig. 4 is a schematic block diagram of the working principle of the boost regulator circuit in embodiment 3 of the present invention;
fig. 5 is a schematic diagram of a boost regulator circuit according to embodiment 3 of the present invention;
fig. 6 is a schematic diagram of an enable trigger circuit of the boost branch circuit according to embodiment 3 of the present invention;
fig. 7 is a schematic diagram of a controller circuit of a boost regulator circuit according to embodiment 3 of the present invention;
fig. 8 is a schematic voltage diagram of a parallel boost branch circuit in embodiment 3 of the present invention;
fig. 9 is a schematic diagram of a switching circuit of the boost branch circuit according to embodiment 3 of the present invention;
fig. 10 is a block diagram of the operating principle of the print head driving circuit in embodiment 4 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions of the present invention. It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. If there is no conflict, various features in the embodiments and examples of the present invention may be combined with each other, all within the scope of the embodiments or the present invention.
Example 1:
the embodiment 1 of the utility model discloses a boost circuit.
As shown in fig. 2, the boost circuit includes a first energy storage unit, a second energy storage unit, and a switch module;
the power supply end of the first energy storage unit is connected with a power supply, the output end of the second energy storage unit is connected with a load, when the switch module is closed, the power supply charges the first energy storage unit (a first loop is formed), and the second energy storage unit independently supplies power to the load (a second loop is formed); when the switch module is disconnected, the first energy storage unit is communicated with the second energy storage unit, the first energy storage unit charges the second energy storage unit, meanwhile, the first energy storage unit and the second energy storage unit simultaneously supply power to a load (a third loop is formed), and the load voltage is increased.
Specifically, when the switch module is communicated, the power source stores energy to the first energy storage unit, the second energy storage unit supplies power to the load (the power supply voltage at the moment is common voltage, namely, the load needing high-voltage driving cannot be touched, or the load is supplied with power at the moment, or only the load needing conventional voltage driving supplies power at the moment), when the energy storage is completed, the switch module is disconnected, the first energy storage unit and the second energy storage unit are communicated at the moment, the first energy storage unit charges the second energy storage unit, and simultaneously the second energy storage unit supplies power to the load together, so that the voltage of the load is increased, and the boosting process is completed.
With the booster circuit of embodiment 1, a stable boosted voltage that meets the load requirement can be obtained.
Example 2:
the utility model discloses boost circuit of embodiment 2 improves on embodiment 1's basis, and is concrete:
as shown in fig. 3, the first energy storage unit is a first inductor L1, the second energy storage unit is a capacitor bank, the capacitor bank is formed by connecting C1, C2, and C3... cna in parallel, and the switch module includes a first MOS transistor Q1, a first diode D1, and a second diode D2; a capacitor C4 and a capacitor C5 are connected in parallel to form a filter circuit, one end of the filter circuit is grounded, the other end of the filter circuit and one end of a first inductor L1 are connected with an input power supply at the same point, the grid electrode of a first MOS tube Q1 is connected with an enabling power supply, the common node of the source electrode of the first MOS tube Q1 and the cathode of a second diode D2 is connected with one end of a first inductor L1, and the drain electrode of the first MOS tube Q1 and the anode of the second diode D2 are connected with one end of a first resistor R1; the other end of the first resistor R1 and one end of the capacitor bank are connected to the common point and grounded, the other end of the capacitor bank is connected to the other end of the first diode D1, and the two ends of the capacitor bank are connected to the load.
The grid of the first MOS tube Q1 is connected to an enabling power supply, when a trigger signal is received, the first MOS tube Q1 is conducted, the power supply charges the first inductor L1, at the moment, the first diode D1 is reversely biased to be cut off, when the first MOS tube Q1 is disconnected, the current of the first inductor L1 cannot directly disappear but slowly disappears, the first inductor L1 is communicated with the capacitor bank and a load through the first diode D1, the capacitor bank is charged through the first inductor L1, the electric energy balance of the capacitor bank is guaranteed, meanwhile, the capacitor bank and the load are powered together, the load voltage is increased, and the voltage boosting is completed.
By adopting the booster circuit of the embodiment 2, the boosting process of the booster circuit does not involve an operational amplifier, but directly and continuously and steadily increases a voltage meeting the requirement on the steady voltage, thereby achieving the purpose of boosting and having the advantages of high stability and high accuracy.
Example 3
The embodiment 3 of the utility model discloses a boost control circuit.
As shown in fig. 4, the boost regulator circuit includes: the boost circuit comprises a controller circuit and a plurality of boost branches connected in parallel, wherein the boost branches are connected to the controller, and the output ends of the boost branches are connected with a load;
the boost branch includes an initial voltage output circuit, a voltage regulation circuit, a feedback calibration circuit, a switching circuit, and a boost circuit as in embodiments 1 and 2.
The initial voltage output circuit is connected to the controller, the booster circuit is connected to the initial voltage output circuit, the output end of the booster circuit is connected to the voltage regulating circuit, the initial voltage output circuit is connected to the voltage regulating circuit, the voltage regulating circuit is connected to the controller, the input end of the feedback calibrating circuit is connected to the output end of the voltage regulating circuit, the input end of the switch circuit is connected to the output end of the feedback calibrating circuit, the switch circuit is connected to the controller, and the output end of the switch circuit is connected to the load.
The method specifically comprises the following steps:
the initial voltage output circuit receives the voltage to be regulated output by the controller, transmits the voltage to be regulated to the booster circuit and outputs a driving voltage signal of a corresponding load to the regulator circuit;
the boosting circuit boosts the voltage to be regulated to the primary driving voltage of the corresponding load; the specific boosting manner is referred to in example 1 and example 2, and will not be described in detail herein.
And the voltage regulating circuit regulates the preliminary driving voltage to the driving voltage according with the driving voltage signal.
The feedback calibration circuit calibrates the driving voltage adjusted by the voltage regulating circuit to obtain a calibrated driving voltage, and transmits the calibrated driving voltage to the switching circuit.
Meanwhile, the feedback calibration circuit is also provided with a display unit, technicians can judge whether the driving voltage meets the requirements according to display data of the display unit, and the display unit preferably selects a light-emitting LED module or an LCD.
The controller is to the voltage regulation voltage through switch circuit selects the correspondence the branch that steps up, and to preliminary driving voltage after the voltage regulation circuit pressure regulating judges whether need the pressure regulating again, and whether selects other the branch that steps up carries out the pressure regulating.
The switching circuit comprises a waveform conversion unit and a switching unit, the waveform conversion unit is connected to the output end of the feedback calibration circuit, the waveform conversion unit converts the calibration driving voltage into a high-voltage driving waveform, the high-voltage driving waveform drives a load, the switching unit is connected to the controller, and the controller controls the corresponding boosting branch circuit to be connected or disconnected through the switching unit.
As shown in fig. 5, a specific embodiment of the present embodiment:
the initial voltage output circuit includes: the circuit comprises a processor, an eleventh capacitor C11, a twelfth capacitor C12, a thirteenth capacitor C13, a fourteenth capacitor C14, a fifteenth capacitor C15, a sixteenth capacitor C16, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13 and a fourteenth resistor R14, wherein the processor is preferably TPS 40210;
the switching frequency setting pin RC of the processor, one end of an eleventh capacitor C11 and one end of an eleventh resistor R11 are connected in common, the other end of the eleventh capacitor C11 is grounded, the other end of the eleventh resistor R11 and an input voltage pin VDD of the processor are connected to a power supply in common, and a soft start time programming pin SS of the processor is connected with a twelfth capacitor C12 in series and grounded; an enabling pin of the processor is connected with an enabling trigger circuit, an output pin COMP of the error amplifier, a thirteenth capacitor C13, a fourteenth capacitor C14, a twelfth resistor R12 and an error amplification direction input end pin FB of the main controller form a control loop compensation network, the control loop compensation network is connected with the voltage regulating circuit, one end of a fifteenth capacitor C15 and one end of a thirteenth resistor R13 are connected with a current detection pin ISNS of the main controller in a common-point mode, a grounding pin GND of the processor and the other end of the fifteenth capacitor C15 are connected with a ground in a common-point mode, the other end of the thirteenth resistor R13 is connected with a drain electrode of a first MOS tube Q1 of the voltage boosting circuit, a driving pin GDRV of the processor is connected with a fourteenth resistor R14 in series and connected with a gate electrode of a first MOS tube Q1 of the voltage boosting circuit, and an output pin BP of the processor is connected with a sixteenth capacitor;
control loop compensation network: one end of a thirteenth capacitor C13 and one end of a fourteenth capacitor C14 are connected to an output pin COMP of the error amplifier at the same point, the other end of the thirteenth capacitor C13 is connected with one end of a twelfth resistor R12, and the other end of the twelfth resistor R12, the other end of the fourteenth capacitor C14 and an error amplification direction input end FB of the main controller are connected to the voltage regulating circuit at the same point;
the voltage regulating circuit comprises a third diode D3, a thirty-first resistor R31, a thirty-second resistor R32 and a thirty-third resistor R33, and the voltage regulating circuit is connected to the main controller circuit;
the thirty-first resistor R31 and the thirty-second resistor R32 are connected in series and then connected with the third diode D3 in parallel to be connected to the output end of the booster circuit, the equipotential point of the thirty-first resistor R31, the thirty-second resistor R32 and the thirty-third resistor R33 is connected to the control loop compensation network of the initial voltage output circuit, and the other end of the thirty-third resistor R33 is connected to the control unit;
the feedback calibration circuit comprises a forty-first resistor R41, a forty-second resistor R42, a forty-first capacitor C41, a forty-second diode D41 and a forty-second diode D42, wherein the forty-first resistor R41 is connected to the output end of the voltage regulating circuit, one end of a forty-second resistor R42, one end of a forty-first capacitor C41, one end of the forty-second resistor R42, the cathode of a first diode D41, the anode common point of a forty-second diode D42 and the other end of the forty-first resistor R41 are connected, the other end of the forty-second resistor R42, the other end of the forty-first capacitor C41 and the anode common point of the forty-second diode D41 are grounded, and the cathode of a forty-second diode D42 is connected with a power supply.
The feedback calibration circuit is also provided with a display unit which is connected with a forty-third resistor R43 in series, and one end of the forty-third resistor R43 and one end of the forty-first resistor R41 are connected with the output end in a common point mode.
As shown in fig. 6, the circuit is an enable trigger circuit of the initial voltage output circuit, and the enable trigger circuit includes a fifty-first resistor R51, a second MOS transistor Q2, a fifty-second resistor R52, a fifty-third resistor R53, and a fifth diode D5;
one end of a fifty-first resistor R51 is connected to the gate of the second MOS transistor Q2, the other end of the fifty-first resistor R51 and one end of the fifty-second resistor R52 are connected to an input source at a common point, the other end of the fifty-second resistor R52 and the drain of the second MOS transistor Q2 are connected to the ground at a common point, one end of a fifty-third resistor R53 and the source of the second MOS transistor Q2 are connected to an enable pin of the main controller at a common point, and the other end of the fifty-third resistor R53 is connected to the power supply.
As shown in fig. 7, the circuit is a controller circuit, and includes a processing chip and peripheral circuits, the output pin of the processing chip is connected with each boosting branch circuit through the peripheral circuits, and the controller circuit is a conventional circuit and will not be described herein again.
As shown in fig. 9, the circuit is a switching circuit, the switching circuit includes a waveform converting unit and a switching unit, the waveform converting unit converts the calibrated driving voltage meeting the load driving requirement into a high-voltage driving waveform to drive a load (the load is a spray head), the controller circuit selects a proper boosting branch circuit to boost the driving voltage to be boosted through opening and closing of the switching unit, a driver of the waveform converting unit is preferably an IR2103S chip, the switching unit is implemented by a peripheral circuit with a MOS transistor as a main component, and the switching circuit is a conventional circuit and will not be described herein again.
As shown in fig. 7, 8 and 9, the controller circuit can select the boosting branch circuit according to a proper output voltage through the switch circuit, so as to boost the voltage to be regulated, and meanwhile, the judgment is performed according to the boosted driving voltage, if the driving requirement of the nozzle is not met, the boosting branch circuit can be selected to be used for boosting again or the boosting branch circuits of other output voltages can be selected to be used for boosting again, so as to meet the driving voltage requirement of the nozzle.
By using the boost regulator circuit of embodiment 3, accurate and stable driving voltage satisfying the requirement of driving the nozzle with high voltage can be obtained.
The rest of the structure and the operation principle of the embodiment 3 are the same as those of the embodiment 1.
Example 4
The embodiment 4 of the utility model discloses a printer, including many parallelly connected above-mentioned boost control circuit, still include the host computer, the host computer is to many boost control circuit distribution treats regulating voltage.
As shown in fig. 10, the upper computer is connected to a plurality of boost regulating circuits connected in parallel, and distributes a driving voltage to be boosted to a controller circuit of the boost regulating circuit, and the controller circuit selects a suitable boost branch circuit to boost the driving voltage to be regulated, and then converts the boosted driving voltage into a high-voltage driving waveform to drive a corresponding nozzle.
By adopting the printer of embodiment 4, the operation of the nozzle under the rated driving voltage can be ensured, the working efficiency is improved, and the service life of the device is prolonged.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A booster circuit is characterized by comprising a first energy storage unit, a second energy storage unit and a switch module;
the power supply end of the first energy storage unit is connected with a power supply, the output end of the second energy storage unit is connected with a load, when the switch module is closed, the power supply charges the first energy storage unit, and the second energy storage unit independently supplies power to the load; when the switch module is disconnected, the first energy storage unit is communicated with the second energy storage unit, the first energy storage unit charges the second energy storage unit, and meanwhile the first energy storage unit and the second energy storage unit simultaneously supply power to a load.
2. The booster circuit of claim 1, wherein the first energy storage unit comprises a first inductor, the second energy storage unit comprises a capacitor bank, and the switch module comprises a first diode and a switch module;
the one end of first inductance inserts input power, and the other end of first inductance is inserted to the positive pole concurrent point of switch module's one end, first diode, and switch module's the other end and the one end of first resistance are connected, and the other end of first resistance and the one end concurrent point ground connection of electric capacity group, the other end of electric capacity group and the other end of first diode are connected, and the both ends of electric capacity group connect the load simultaneously.
3. The booster circuit of claim 2, wherein the switch module includes a first MOS transistor and a second diode, a gate of the first MOS transistor is connected to the enable power supply, a common node of a source of the first MOS transistor and a cathode of the second diode is connected to one end of the first inductor, and a drain of the first MOS transistor and an anode of the second diode are connected to one end of the first resistor; one end of the first inductor and the filter circuit are connected to a power supply in a common-point mode, the other end of the filter circuit is grounded, and the capacitor bank comprises a plurality of capacitors connected in parallel.
4. The booster circuit of claim 3, wherein the first diode is turned off in a reverse direction when the first MOS transistor is turned on; the power supply charges the first inductor, and meanwhile, the capacitor bank independently supplies power to the load;
when the first MOS tube is disconnected, the first diode is positively conducted; the first inductor is communicated with the capacitor bank, the capacitor bank is charged by the first inductor, and meanwhile the load is simultaneously supplied with power by the first inductor and the capacitor bank.
5. A boost regulation circuit, comprising: the boost circuit comprises a controller circuit and a plurality of boost branches connected in parallel, wherein the boost branches are connected to the controller, and the output ends of the boost branches are connected with a load;
the boost branch comprises an initial voltage output circuit, a voltage regulating circuit, a feedback calibration circuit, a switching circuit and the boost circuit of claim 1;
the initial voltage output circuit is connected to the controller, the booster circuit is connected to the initial voltage output circuit, the output end of the booster circuit is connected to the voltage regulating circuit, the initial voltage output circuit is connected to the voltage regulating circuit, the voltage regulating circuit is connected to the controller, the input end of the feedback calibrating circuit is connected to the output end of the voltage regulating circuit, the input end of the switch circuit is connected to the output end of the feedback calibrating circuit, the switch circuit is connected to the controller, and the output end of the switch circuit is connected to the load.
6. A boost regulator circuit according to claim 5, wherein the initial voltage output circuit receives the voltage to be regulated output by the controller, transmits the voltage to be regulated to the boost circuit, and outputs a driving voltage signal of a corresponding load to the voltage regulator circuit;
the boosting circuit boosts the voltage to be regulated to the primary driving voltage of the corresponding load;
the voltage regulating circuit regulates the primary driving voltage to a driving voltage according with a load according to the driving voltage signal;
the feedback calibration circuit calibrates the driving voltage adjusted by the voltage regulating circuit to obtain a calibration driving voltage, and transmits the calibration driving voltage to the switching circuit;
the controller is used for selecting the corresponding boosting branch circuit to boost the voltage to be regulated through the switch circuit, judging whether the voltage needs to be regulated again or not according to the primary driving voltage regulated by the voltage regulating circuit, and selecting other boosting branch circuits to regulate the voltage.
7. The boost regulation circuit of claim 6, wherein the initial voltage output circuit comprises: the circuit comprises a main controller, an eleventh capacitor, a twelfth capacitor, a thirteenth capacitor, a fourteenth capacitor, a fifteenth capacitor, a sixteenth capacitor, an eleventh resistor, a twelfth resistor, a thirteenth resistor and a fourteenth resistor;
a switching frequency setting pin of the main controller, one end of an eleventh capacitor and one end of an eleventh resistor are connected in common, the other end of the eleventh capacitor is grounded, the other end of the eleventh resistor and an input voltage pin VDD of the main controller are connected to a power supply in common, and a soft start time programming pin of the main controller is connected in series with a twelfth capacitor and grounded; an enabling pin of the main controller is connected with an enabling trigger circuit, an output pin of the error amplifier, a thirteenth capacitor, a fourteenth capacitor, a twelfth resistor and an error amplification direction input end pin of the main controller form a control loop compensation network, the control loop compensation network is connected with the voltage regulating circuit, one end of the fifteenth capacitor and one end of the thirteenth resistor are connected with a current detection pin of the main controller at the same point, a grounding pin of the main controller and the other end of the fifteenth capacitor are grounded at the same point, the other end of the thirteenth resistor is connected with a drain electrode of a first MOS (metal oxide semiconductor) transistor of the booster circuit, a gate driving pin of the main controller is connected with the gate of the first MOS transistor of the booster circuit in series through the fourteenth resistor, and an output pin of the main controller is connected with the sixteenth capacitor in series and;
the voltage regulating circuit comprises a third diode, a thirty-first resistor, a thirty-second resistor and a thirty-third resistor;
a thirty-first resistor and a thirty-second resistor are connected in series and then connected with a third diode in parallel to be connected to the output end of the booster circuit, the equipotential points of the thirty-first resistor, the thirty-second resistor and the thirty-third resistor are connected to the control loop compensation network of the initial voltage output circuit, and the other end of the thirty-third resistor is connected to a control unit;
the feedback calibration circuit comprises a forty-first resistor, a forty-second resistor, a forty-first capacitor, a forty-second diode, a display unit, a forty-third resistor, a forty-first resistor and a forty-second diode, wherein the forty-first resistor is connected to the output end of the voltage regulating circuit, one end of the forty-second resistor, one end of the forty-first capacitor, one end of the forty-second resistor, the cathode of the forty-second diode, the anode common point of the forty-second diode and the other end of the forty-first resistor are connected, the other end of the forty-second resistor, the other end of the forty-first capacitor and the anode common point of the forty-second diode are grounded, and the cathode of the forty-second diode is connected with a power supply; the display unit is connected with the forty-third resistor in series, and one end of the forty-third resistor and one end of the forty-first resistor are connected with the feedback output end in a point-sharing mode.
8. The boost regulator circuit according to claim 7, wherein the switch circuit includes a waveform converter unit and a switch unit, the waveform converter unit is connected to an output end of the feedback calibration circuit, the waveform converter unit converts the calibration driving voltage into a high-voltage driving waveform, the high-voltage driving waveform drives a load, the switch unit is connected to the controller, and the controller controls the corresponding boost branch circuit to be turned on or off through the switch unit.
9. The boost regulator circuit according to claim 7, wherein the enable trigger circuit comprises a fifty-first resistor, a second MOS transistor, a fifty-second resistor, a fifty-third resistor and a fifth diode, one end of the fifty-first resistor is connected to the gate of the second MOS transistor, the other end of the fifty-first resistor and one end of the fifty-second resistor are connected to the input source at a common point, the other end of the fifty-second resistor and the drain of the second MOS transistor are connected to the ground at a common point, one end of the fifty-third resistor and the source of the second MOS transistor are connected to the enable pin of the main controller at a common point, and the other end of the fifty-third resistor is connected to the power supply.
10. A printer comprising a plurality of voltage boost regulator circuits according to any one of claims 5 to 9 connected in parallel, and further comprising an upper computer that distributes a voltage to be regulated to the plurality of voltage boost regulator circuits.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020283797.1U CN211508908U (en) | 2020-03-10 | 2020-03-10 | Boost circuit, boost regulating circuit and printer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020283797.1U CN211508908U (en) | 2020-03-10 | 2020-03-10 | Boost circuit, boost regulating circuit and printer |
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| CN211508908U true CN211508908U (en) | 2020-09-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113472048A (en) * | 2021-07-30 | 2021-10-01 | 阳光电源股份有限公司 | Startup and shutdown control system and switching power supply system |
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2020
- 2020-03-10 CN CN202020283797.1U patent/CN211508908U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113472048A (en) * | 2021-07-30 | 2021-10-01 | 阳光电源股份有限公司 | Startup and shutdown control system and switching power supply system |
| CN113472048B (en) * | 2021-07-30 | 2024-05-14 | 阳光电源股份有限公司 | On-off control system and switching power supply system |
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Address after: 518000 a201-a301, building a, Sino German European Industrial Demonstration Park, Hangcheng Avenue, guxing community, Xixiang street, Bao'an District, Shenzhen, Guangdong Patentee after: Shenzhen Hansen Software Co.,Ltd. Address before: 1701, 1703, building C6, Hengfeng Industrial City, 739 Zhoushi Road, Hezhou community, Hangcheng street, Bao'an District, Shenzhen, Guangdong 518000 Patentee before: SHENZHEN HOSONSOFT Co.,Ltd. |