CN212086541U - Chip integrated module, control circuit and lighting device - Google Patents
Chip integrated module, control circuit and lighting device Download PDFInfo
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- CN212086541U CN212086541U CN202020947553.9U CN202020947553U CN212086541U CN 212086541 U CN212086541 U CN 212086541U CN 202020947553 U CN202020947553 U CN 202020947553U CN 212086541 U CN212086541 U CN 212086541U
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Abstract
The utility model discloses a chip integrated module, control circuit and lighting device. The utility model discloses a chip integrated module for be connected with external resistance, including control foot and logic control unit, chip integrated module can utilize a control foot to connect external resistance, and logic control unit includes threshold value regulation end, and control foot connection threshold value regulation end connects external resistance, and chip integrated module confirms excess temperature protection threshold value and temperature-current curve slope according to an external resistance's resistance, has just for realized that two kinds of functions can only set up a control foot, thereby can not increase pin quantity by a wide margin on satisfying the basis that increases the function.
Description
Technical Field
The application relates to the technical field of chip integration, in particular to a chip integration module, a control circuit and a lighting device.
Background
In the application of lighting products, the functional requirements of lighting products are higher and higher, for example, after AC-DC (Alternating Current-Direct Current) conversion is satisfied, the electromagnetic compatibility requirements of the products are also satisfied.
In order to meet more requirements, the number of pins of the chip integrated module is increased, however, the package structure usually has a limitation on the number of pins, and therefore, it is necessary to provide a chip integrated module capable of meeting the increased functions without greatly increasing the number of pins.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a chip integrated module to solve the technical problem that pin quantity increases by a wide margin after the function increases. Furthermore, the utility model also provides a control circuit and lighting device.
In order to solve the above problems, the utility model adopts the following technical proposal:
in a first aspect, the present invention provides a chip integrated module for connecting with an external resistor, including: the control pin is connected with the threshold adjusting end and used for being connected with the external resistor, and the logic control unit is connected with the control pin and used for determining the over-temperature protection threshold value and the temperature-current curve slope of the chip integrated module according to the resistance value of the external resistor based on a preset mapping relation.
In the above chip integration module, the preset mapping relationship includes:
determining an over-temperature protection threshold value of the chip integrated module according to the resistance value of the external resistor based on the mapping relation between the first resistance value interval and the over-temperature protection value;
and/or
And determining the over-temperature protection threshold of the chip integrated module according to the resistance of the external resistor based on the mapping relation between the second resistance interval and the slope of the temperature-current curve.
In the chip integrated module, the chip integrated module further includes a current signal sampling pin; the logic control unit also comprises a temperature detection subunit, a control subunit, a driving subunit and a current sampling end; the current sampling end is connected with the current signal sampling pin, the temperature detection subunit comprises a temperature output end, and the control subunit comprises a temperature input end, the threshold value adjusting end, the current sampling end and a logic output end; the driving subunit comprises an input end and an output end, and the output end of the driving subunit is used for outputting a driving instruction; the output end of the temperature detection subunit is connected with the temperature input end, and the logic output end is connected with the input end of the driving subunit.
In the chip integrated module, the chip integrated module includes a switch tube; the logic control unit further comprises a driving end, and the driving end is connected with the control electrode of the switch tube to control the switch tube to be switched off or switched on.
In the above chip integrated module, the switch tube includes a source electrode, and the source electrode is connected to the current signal sampling terminal to receive the current signal.
The chip integrated module described above, further comprising: the alternating current input pin is connected with the rectification input end, the second grounding pin is connected with the public reference end, the logic control unit is provided with a grounding end, and the first grounding pin is connected with the grounding end.
In the chip integrated module, the rectifying unit further has a rectifying output end; the chip integrated module further comprises a power supply voltage input pin, and the power supply voltage input pin is connected with the rectification output end.
In the chip integrated module, the chip integrated module further includes a freewheeling diode, an anode of the freewheeling diode is connected to the rectification output terminal, and a cathode of the freewheeling diode is connected to the power supply voltage input pin.
In a second aspect, the present invention provides a control circuit, including external resistor, first ground pin and as above any one chip integrated module, wherein, external resistor connect in between control pin and the second ground pin, control circuit foundation the excess temperature protection threshold value and temperature-current curve slope are confirmed to external resistor's resistance.
The control circuit comprises a sampling resistor; the chip integrated module also comprises a current signal sampling pin and a switching tube, wherein the switching tube comprises a source electrode which is connected with the current signal sampling pin to receive a current signal; the sampling resistor is connected between the current signal sampling pin and the second grounding pin, and the output end of the logic control unit is connected with the control electrode of the switch tube to control the switch-off or switch-on of the switch tube.
In the above control circuit, the chip integrated module further includes: the logic control unit comprises a logic control unit and a logic control unit, wherein the logic control unit comprises a first grounding pin and a second grounding pin, the first grounding pin is connected with the common reference end, the second grounding pin is connected with the first grounding pin, and the second grounding pin is connected with the second grounding pin;
the control circuit comprises a filter, the filter comprises a first inductor, and two ends of the first inductor are respectively connected with the first grounding pin and the second grounding pin.
In the control circuit, the chip integrated module further includes a power supply voltage input pin, and the power supply voltage input pin is connected to the rectification output end;
the filter comprises a first capacitor, the anode of the first capacitor is connected with the power supply voltage input pin, and the cathode of the first capacitor is connected with the second grounding pin.
In the control circuit, the control circuit further comprises a chopper, and the chopper is connected between the chip integrated module and the load.
In the control circuit, the chopper includes a second inductor and a second capacitor, and the second inductor is connected between the drain of the switching tube and the load; the anode of the second capacitor is connected with the power supply voltage input pin, and the cathode of the second capacitor is connected with the second grounding pin.
In the control circuit, the control circuit further includes an ac module, the ac module includes an ac source and a fuse, and the ac source is connected to the ac input pin; the fuse is connected between the alternating current source and the alternating current input pin.
In a third aspect, the present invention provides a lighting device, comprising a light emitting unit, and the control circuit as described in any one of the above, wherein the control circuit inputs direct current to the light emitting unit.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model discloses a chip integrated module for be connected with external resistance, including control foot and logic control unit, chip integrated module can utilize a control foot to connect external resistance, and logic control unit includes threshold value regulation end, and control foot connection threshold value regulation end connects external resistance, and chip integrated module confirms excess temperature protection threshold value and temperature-current curve slope according to an external resistance's resistance, has just for realized that two kinds of functions can only set up a control foot, thereby can not increase pin quantity by a wide margin on satisfying the basis that increases the function.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 illustrates a control circuit and a chip integrated module included in the prior art;
fig. 2 is a schematic structural diagram of a chip integrated module according to a first embodiment and a second embodiment of the present invention;
FIG. 3 is a block diagram of a logic control unit of the chip integrated module of FIG. 2;
fig. 4 is a schematic structural diagram of a control circuit according to a third embodiment of the present invention.
Reference numerals:
100' -prior art AC-DC chip module; 200' -prior art control circuitry; 210' -prior art filters;
100-chip integrated module; 10-a logic control unit; 11-a temperature detection subunit; 111-the output of the temperature detection subunit; 12-a control subunit; 121-temperature input; 122 — a logic output; 13-a drive subunit; 131-input of drive subunit; 14-ground terminal; 15-current sampling end; 16-a drive end; 17-threshold adjustment end; 200-a control circuit; 210-a filter; 220-a chopper; 230-an alternating current module; 240-load;
ACIN: an AC input pin;
GND 1-first ground pin; GND 2-second ground pin;
d1-a rectifying unit; d1 IN-rectifying input; d1 OUT-a rectification output end; d1 CG-common reference terminal; d2-freewheeling diode;
EC1 — first capacitance; EC2 — second capacitance; EC3 — third capacitance;
l1 — first inductance; l2 — second inductance;
VIN-supply voltage input pin;
ISEN-current signal sampling pin;
q-switching tube; a QS-source; QD-drain; QG-control pole;
TH/SLP-control pin;
Rth/Rslp-external resistor; RL-parallel resistance; rcs — sampling resistor;
an LED-light emitting unit;
Drain-Drain pin;
an AC-AC source; fuse-fuses.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the utility model provides an in, chip integrated module can be AC-DC integrated module, or other chip integrated modules that need add the wave filter, no longer gives unnecessary details here. The electromagnetic compatibility may be a requirement for emi (electromagnetic interference) electromagnetic compatibility, or other electromagnetic compatibility requirements.
Example one
Taking the AC-DC chip module 100 ' in the chip integrated module as an example, as shown in fig. 1, since the AC-DC chip module 100 ' generally has only a single common pin, it is necessary to connect the filter 210 ' to the input terminal of the AC-DC chip module 100 ', i.e., the AC side of the AC-DC chip module 100 '. Based on the capacitive withstand voltage and safety considerations, the filter 210 'needs to use the safety capacitor CX1 (such as an X safety capacitor), however, the safety capacitor CX1 has a high cost and a large volume, which results in a large increase in volume and cost after the AC-DC chip module is connected to the filter 210'. Therefore, a new chip integrated module is needed to meet the increased functional requirements of the product without increasing the volume and cost.
As shown in fig. 2, an embodiment of the present invention provides a chip integrated module 100, including: the power supply comprises an alternating current input pin ACIN, a first ground pin GND1, a second ground pin GND2, a rectifying unit D1, a supply voltage input pin VIN and a logic control unit 10. The rectifying unit D1 has a rectifying input terminal D1IN, a rectifying output terminal D1OUT, and a common reference terminal D1 CG. The ac input pin ACIN is connected to the rectifying input terminal D1IN, the first ground pin GDN1 is connected to the common reference terminal D1CG, the logic control unit 10 has a ground terminal 14, the second ground pin GND2 is connected to the ground terminal 14 of the logic control unit 10, and the supply voltage input pin VIN is connected to the rectifying output terminal D1 OUT.
The external circuit connected to the chip integrated module 100 may include a filter 210, and the filter 210 includes a first inductor L2 and a first capacitor EC 1. The chip integrated module 100 includes a second ground pin GND2 and a first ground pin GND1, and the chip integrated module 100 has two ground pins (GND1 and GND2), so when the filter 210 is connected to the chip integrated module 100, the first inductor L2 of the filter 210 may be connected between the two ground pins GND1 and GND2, and the first capacitor EC1 of the filter 210 is disposed between the supply voltage input pin VIN and the first ground pin GND1, that is, the first capacitor EC1 of the filter 210 is disposed at the rear end of the rectifying unit D1, that is, the input ac is rectified and then filtered, so that the filter 210 can achieve a filtering effect by using an electrolytic capacitor or a thin film capacitor without using an ampere-standard capacitor, and the cost and the volume of the chip integrated module 100 after being connected to the filter 210 are not greatly increased.
The AC input pin has two pins, ACIN1 and ACIN2 in fig. 2, for receiving 220V AC or other volts AC. The rectifying unit D1 may be a rectifying bridge or other rectifying elements, and the rectifying bridge is a full bridge or a half bridge. The second ground pin GND2 and the first ground pin GND1 are two pins, GND2 and GND 1in fig. 2, respectively. And the logic control unit 10 is configured to determine an output driving command according to the input signal to drive the corresponding load 240.
The logic control unit 10 has a current sampling end 15, a driving end 16 and a threshold adjusting end 17 in addition to the ground end 14, the current sampling end 15 is used for inputting the collected current signal, the driving end 16 is used for outputting a driving instruction, and the threshold adjusting end 17 is used for determining an over-temperature protection threshold or a temperature-current curve slope of the chip integrated module according to the resistance value of the external resistor. The threshold adjusting terminal 17 may determine the over-temperature protection threshold and the temperature-current curve slope simultaneously based on a control pin and an external resistor connected to the control pin, or may determine the over-temperature protection threshold and the temperature-current curve slope respectively based on a first control pin, a first external resistor, a second control pin and a second external resistor.
The chip integrated module 100 further includes a switch tube Q and a current signal sampling pin ISEN, where the switch tube Q includes a source QS, a drain QD and a control electrode QG, the source QS is connected to the current signal sampling pin ISEN and the current sampling terminal 15 of the logic control unit 10, that is, the current signal sampling pin ISEN of the chip integrated module 100 is connected to the current sampling terminal 15 of the logic control unit 10. The driving end 16 of the logic control unit 10 is connected to the control electrode QG of the switching tube Q, and outputs a driving signal to the control electrode QG of the switching tube Q based on the current target of current reduction or current rise in combination with the sampled current signal, so as to control the switching-off or switching-on of the switching tube Q, thereby achieving the purpose of adjusting voltage or current.
The chip integrated module 100 further includes a freewheeling diode D2, the anode of the freewheeling diode D2 is connected to the rectifying output terminal D1OUT, and the cathode of the freewheeling diode D2 is connected to the supply voltage input pin VIN, so as to prevent the voltage abrupt change from damaging the components in the chip integrated module 100.
The logic control unit 10 is provided with an over-temperature protection threshold of the chip integrated module 100 and a slope of a temperature-current curve of the chip integrated module 100. Specifically, as shown in fig. 3, the logic control unit 10 may include a temperature detection subunit 11, a control subunit 12, and a driving subunit 13. The temperature detecting subunit 11 includes a detecting unit for detecting the current temperature of the chip integrated module 100, and an output end 111, where the output end 111 of the temperature detecting subunit sends a logic signal to the control subunit 12 according to the detected current temperature. The control subunit 12 includes a temperature input end 121, a current sampling end 15, and a logic output end 122, where the temperature input end 121 is connected to the output end 111 of the temperature detection subunit 11 and is configured to receive a logic signal sent by the temperature detection subunit 11, and the current sampling end 15 is connected to a current signal sampling pin ISEN. The driving subunit 13 includes an input end 131 and an output end 16, the input end 131 of the driving subunit 13 is connected to the logic output end 122 of the control subunit 12 to receive the driving signal output by the control subunit 12, the output end 16 of the driving subunit 13 is connected to the control electrode QG of the switching tube Q, and is configured to output a driving instruction to the control electrode QG of the switching tube Q according to the received driving signal, and the switching tube Q is turned on or off according to the driving instruction. Obviously, the output terminal 16 of the driving subunit 13 is the driving terminal 16 of the logic control unit 10.
The chip integrated module 100 further includes a first control pin TH, and the first control pin TH is used for connecting a first external resistor Rth. The control subunit 12 includes a first threshold value adjusting terminal (not shown), which is connected to the first control pin Rth; the chip integrated module 100 protects the threshold value according to the resistance value of the first external resistor Rth. The chip integrated module 100 further includes a second control pin SLP, where the second control pin SLP is used to connect to a second external resistor Rslp; the control subunit 12 includes a second threshold value adjusting end (not shown), and the second threshold value adjusting end is connected to the second control pin SLP; the logic control unit 10 determines the slope of the temperature-current curve according to the resistance value of the second external resistance Rslp.
In actual use, the first external resistor Rth and the second external resistor Rslp are adjustable resistors, and the over-temperature protection threshold value is adjusted by adjusting the resistance value of the first external resistor Rth; the adjustment of the slope of the temperature-current curve is realized by adjusting the resistance value of the second external resistor Rslp.
In the embodiment of the present invention, the first control pin and the TH second control pin SLP are two independent pins respectively; as a variation, the first control pin TH and the second control pin SLP may also be combined into one control pin, and then the first external resistor Rth and the second external resistor Rslp are the same external resistor, thereby achieving the purpose of multiplexing the pins on the chip integrated module 100.
For example, the temperature detecting subunit 11 detects the current temperature of the chip integrated module 100, and sends a corresponding logic signal to the control subunit 12 according to the current temperature. The control subunit 12 obtains the corresponding over-temperature protection threshold according to the resistance value of the first external resistor Rth, and judges whether the current temperature exceeds the over-temperature protection threshold based on the logic signal, and if so, the temperature needs to be reduced. The control subunit 12 obtains the slope of the temperature-current curve of the chip integrated module 100 according to the resistance value of the second external resistor Rslp, determines how much current value needs to be adjusted according to the temperature value to be reduced or the target temperature value and the current obtained by sampling, and calculates a corresponding driving signal and sends the driving signal to the driving subunit 13. The driving subunit 13 generates a driving instruction for turning on or off the switching tube Q according to the driving signal, thereby completing current regulation.
As shown in fig. 2, the embodiment of the present invention provides a chip integrated module 100, when the first control pin TH and the second control pin SLP are multiplexed, the chip integrated module 100 further includes two ac input pins, namely ACIN1 and ACIN2, two ground pins, namely GND2 and GND1, a current signal sampling pin ISEN, an ac voltage input pin VIN, and a Drain pin Drain of the switch Q.
It should be noted that fig. 2 only shows one arrangement of the pins in the chip integrated module 100 of the present invention, and the position relationship of the pins can be adaptively adjusted according to actual situations.
Example two
In the prior art, in order to set an over-temperature protection threshold, referring to fig. 1, a control pin TH is required to be externally connected with a resistor Rth, a slope of a temperature-current curve may be kept unchanged, if a temperature-current curve line needs to be adjusted, another control pin needs to be additionally arranged, and another resistor is externally connected, that is, as functions of a chip integrated module 100' in the prior art are increased, the number of pins tends to increase, however, a package structure usually has a limit on the number of pins. The utility model discloses an above-mentioned embodiment first introduced first control foot TH and second control foot SLP can multiplex to and when first external resistance Rth and the multiplexing of second external resistance Rslp, chip integrated module 100 can confirm excess temperature protection threshold value and temperature-current curve slope, thereby can reduce pin quantity. The embodiment of the utility model provides a, specifically explain how to confirm simultaneously excess temperature protection threshold value and temperature-current curve slope through the multiplexing of pin.
As shown in fig. 2, an embodiment of the present invention provides a chip integrated module 100, including: control foot TH/SLP and logic control unit 10, control foot TH/SLP connects logic control unit 10's input, control foot TH/SLP is used for connecting external resistance Rth/Rslp, logic control unit 10 connects control foot TH/SLP to according to the resistance value of external resistance Rth/Rslp based on the mapping relation that predetermines confirms chip integrated module 100's excess temperature protection threshold value and temperature-current curve slope.
The utility model discloses chip integrated module 100 can utilize a control foot TH SLP to connect external resistance Rth/Rslp, and logic control unit 10 confirms the excess temperature protection threshold value and the temperature-current curve slope of chip integrated module 100 according to external resistance Rth/Rslp's resistance, has just for realized that two kinds of functions can only set up a control foot TH SLP for satisfying the basis that increases the function and can not increase pin quantity by a wide margin.
Wherein, the preset mapping relationship comprises: and determining the over-temperature protection threshold of the chip integrated module 100 according to the resistance value of the external resistor Rth/Rslp based on the mapping relation between the first resistance value interval and the over-temperature protection value. The preset mapping relationship further includes: and determining the over-temperature protection threshold of the chip integrated module 100 according to the resistance value of the external resistor Rth/Rslp based on the mapping relation between the second resistance value interval and the slope of the temperature-current curve.
The above-described preset relationship may be set in the logic control unit 10 in advance. For example, when the resistance value of the external resistor Rth/Rslp is between 100 and 200 ohms, the over-temperature protection threshold value is A, and when the resistance value of the external resistor Rth/Rslp is between 200 and 300 ohms, the over-temperature protection threshold value is B. If the current resistance value of the external resistor Rth/Rslp is 150 ohms, the over-temperature protection threshold value is A, and the slope of the temperature-current curve is K1; if the current resistance value of the external resistor Rth/Rslp is adjusted to 180 ohms, the over-temperature protection threshold is still A, but the slope of the temperature-current curve is K2. Obviously, the external resistor Rth/Rslp is a resistor with an adjustable resistance value, and can be adjusted according to the actual requirements of the chip integrated module 100.
Referring to the first embodiment, the current signal sampling pin ISEN of the chip integrated module 100 is used for externally connecting the sampling resistor Rcs to collect the current in the control circuit 200. As shown in fig. 3, the logic control unit 10 includes a temperature detection subunit 11, a control subunit 12, and a drive subunit 13. The temperature detection subunit 11 is configured to detect a current temperature of the chip integrated module 100, and generate a logic signal according to the current temperature. The control subunit 12 includes a temperature input 121, a threshold adjustment terminal 17, a current sampling terminal 15 and a logic output 122. The output end 111 of the temperature detection subunit 11 is connected to the temperature input end 121 of the control subunit 12, and the current temperature of the chip integrated module 100 detected by the temperature detection subunit 11 generates a corresponding logic signal, which enters the control subunit 12 from the output end 111 of the temperature detection subunit 11 through the temperature input end 121 of the control subunit 12. That is, the logic control unit 10 may utilize the threshold adjusting terminal 17 thereof to connect the external resistor Rth/Rslp, and further determine the resistance value of the external resistor Rth/Rslp. The current sampling terminal 15 of the control subunit 12 is connected to the current signal sampling pin ISEN, that is, the logic control unit 10 may connect the sampling resistor Rcs disposed outside the chip integrated module 100 by using the current sampling terminal 15 thereof, and then sample the current in the control circuit 200. The logic output 122 of the control subunit 12 is connected to the input of the driving subunit 13, and the driving signal of the control subunit 12 is output to the driving subunit 13 through the logic output. The output end of the driving subunit 13 is the driving end 16 of the logic control unit 10, and specifically, the driving subunit 13 generates a driving instruction according to the received driving signal, so as to drive the switching tube Q to be turned off or turned on.
Specifically, the control subunit 12 determines whether the current needs to be adjusted currently according to the logic signal sent by the temperature detection subunit 11, the sampled current of the control circuit 200, and the resistance value of the external resistor Rth/Rslp, and further sends a driving signal to the driving subunit 13.
For example, the temperature detecting subunit 11 detects the current temperature of the chip integrated module 100, and sends a corresponding logic signal to the control subunit 12 according to the current temperature. The control subunit 12 obtains a corresponding over-temperature protection threshold according to the resistance value of the external resistor Rth/Rslp, determines whether the current temperature exceeds the over-temperature protection threshold based on the logic signal, if so, the temperature needs to be reduced, obtains the slope of the temperature-current curve of the chip integrated module 100 based on the resistance value of the external resistor Rth/Rslp, determines how much current value needs to be adjusted according to the temperature value to be reduced or the target temperature value and the current obtained by sampling, and calculates a corresponding driving signal and sends the driving signal to the driving subunit 13. The driving subunit 13 generates a driving instruction for turning on or off the switching tube Q according to the driving signal, thereby completing current regulation.
EXAMPLE III
As shown in fig. 4, the embodiment of the present invention provides a control circuit 200, which includes a filter 210 and the chip integrated module 100 according to the first embodiment. Filter 210 may be an EMI filter, or other type of filter, among others.
The filter 210 includes a first inductor L2 and a first capacitor EC1, the first inductor L2 is used for realizing filtering, two ends of the first inductor are respectively connected to a second ground pin GND2 and a first ground pin GND1 of the chip integrated module 100, the second ground pin GND2 and the first ground pin GND1 are respectively grounded, a positive electrode of the first capacitor EC1 is connected to the supply voltage input pin VIN, and a negative electrode of the first capacitor ECI is connected to the second ground pin GND 2.
The embodiment of the utility model provides an in, the first electric capacity EC1 of wave filter 210 sets up between supply voltage input foot VIN and first ground connection foot GND1, also be in the rear end of rectifier unit D1 with the first electric capacity EC1 of wave filter 210, the first rectification back filtering of alternating current of input promptly, thereby make wave filter 210 need not to use ann rule electric capacity but use electrolytic capacitor or film capacitor just can realize the filter effect, prior art relatively, make chip integrated module 100 connect not only realize the filter function but also can not increase cost and volume by a wide margin after wave filter 210.
The control circuit 200 further comprises a sampling resistor Rcs connected between the current signal sampling pin ISEN and the second ground pin GND2 to sample the current in the circuit.
The embodiment of the utility model provides a control circuit 200, including external resistance Rth/Rslp, first ground pin GND1 and as implementing one chip integrated module 100. The external resistor Rth/Rslp is connected between the control pin TH/SLP and the second ground pin GND2, and the control circuit 200 determines the over-temperature protection threshold and the temperature-current curve slope of the chip integrated module 100 according to the resistance value of the external resistor Rth/Rslp. Obviously, the external resistor Rth/Rslp is an adjustable resistor.
The utility model discloses control circuit 200 utilizes an external resistance Rth/Rslp, orders about logic control unit 10 and confirms the excess temperature protection threshold value and the temperature-current curve slope of chip integrated module 100 according to external resistance Rth/Rslp's resistance, has just for realized that two kinds of functions can only set up an external resistance Rth/Rslp for can not increase pin quantity by a wide margin on satisfying the basis that increases the function.
As a variation, when the over-temperature protection threshold and the slope of the temperature-current curve are respectively set by using two control pins external resistors: the chip integrated module 100 further includes a first control pin TH, and the logic control unit 10 is connected to the first control pin TH. The control circuit 200 includes a first external resistor Rth, the first external resistor Rth is connected between the first control pin TH and the second ground pin GND2, and the logic control unit 10 determines the over-temperature protection threshold of the chip integrated module 100 according to the resistance value of the first external resistor Rth; the chip integrated module 100 further includes a second control pin SLP, and the logic control unit 10 is connected to the second control pin SLP. The control circuit 200 includes a second external resistor Rslp connected between the second control pin SLP and the second ground pin GND2, and the logic control unit 10 determines the slope of the temperature-current curve of the chip integrated module 100 according to the resistance value of the second external resistor Rslp.
The control circuit 200 further includes a chopper 220, and the chopper 220 is connected between the chip integrated module 100 and the load 240 so that the voltage output to the load 240 is variable.
The chip integrated module 100 includes a switching tube Q including a drain QD; the chopper 220 includes a second inductor L1 and a second capacitor EC2, the second inductor L1 being connected between the drain QD and the load 240; the positive electrode of the second capacitor EC2 is connected with the power supply voltage input pin, and the negative electrode of the second capacitor EC2 is connected with the second grounding pin GND 2.
In addition, the control circuit 200 further includes an AC module 230, where the AC module 230 includes an AC source AC and a Fuse, the AC source is connected to the AC input pin ACIN; the Fuse is connected between the AC source AC and the AC input pin ACIN, and is disconnected when the current exceeds a predetermined value, thereby protecting the chip integrated module 100.
In the embodiment of the present invention, the load 240 may include an LED lighting unit, or other components and parts that need to be powered by dc. Specifically, referring to fig. 4, the load 240 includes a third capacitor EC3 and a parallel resistor RL disposed in parallel with the LED lighting unit.
EXAMPLE III
An embodiment of the utility model provides a lighting device includes luminescence unit LED among this lighting device to and the control circuit in the second embodiment, this control circuit is used for luminescence unit LED input direct current, and luminescence unit is used for sending light.
It should be apparent to those skilled in the art that while the preferred embodiments of the present invention have been described, additional variations and modifications to these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (16)
1. A chip integrated module for being connected with an external resistor, comprising: the control pin is connected with the threshold adjusting end and used for being connected with the external resistor, and the logic control unit is connected with the control pin and used for determining the over-temperature protection threshold value and the temperature-current curve slope of the chip integrated module according to the resistance value of the external resistor based on a preset mapping relation.
2. The chip integrated module according to claim 1, wherein the predetermined mapping relationship comprises:
determining an over-temperature protection threshold value of the chip integrated module according to the resistance value of the external resistor based on the mapping relation between the first resistance value interval and the over-temperature protection value;
and/or
And determining the over-temperature protection threshold of the chip integrated module according to the resistance of the external resistor based on the mapping relation between the second resistance interval and the slope of the temperature-current curve.
3. The chip integrated module according to claim 1, further comprising a current signal sampling pin; the logic control unit also comprises a temperature detection subunit, a control subunit, a driving subunit and a current sampling end; the current sampling end is connected with the current signal sampling pin, the temperature detection subunit comprises a temperature output end, and the control subunit comprises a temperature input end, the threshold value adjusting end, the current sampling end and a logic output end; the driving subunit comprises an input end and an output end, and the output end of the driving subunit is used for outputting a driving instruction; the output end of the temperature detection subunit is connected with the temperature input end, and the logic output end is connected with the input end of the driving subunit.
4. The chip integrated module according to claim 3, wherein the chip integrated module comprises a switch tube; the logic control unit further comprises a driving end, and the driving end is connected with the control electrode of the switch tube to control the switch tube to be switched off or switched on.
5. The chipset integrated module as recited in claim 4, wherein the switch tube comprises a source connected to the current signal sampling terminal for receiving a current signal.
6. The chip integrated module according to any one of claims 1 to 4, further comprising: the alternating current input pin is connected with the rectification input end, the second grounding pin is connected with the public reference end, the logic control unit is provided with a grounding end, and the first grounding pin is connected with the grounding end.
7. The chip integrated module according to claim 6, wherein the rectifying unit further has a rectifying output; the chip integrated module further comprises a power supply voltage input pin, and the power supply voltage input pin is connected with the rectification output end.
8. The chip integrated module according to claim 7, further comprising a freewheeling diode, wherein an anode of the freewheeling diode is connected to the rectifying output terminal, and a cathode of the freewheeling diode is connected to the supply voltage input pin.
9. A control circuit, comprising an external resistor, a first ground pin and the ic module of any one of claims 1-3, wherein the external resistor is connected between the control pin and the second ground pin, and the control circuit determines the over-temperature protection threshold and the slope of the temperature-current curve according to the resistance of the external resistor.
10. The control circuit of claim 9, wherein the control circuit comprises a sampling resistor; the chip integrated module also comprises a current signal sampling pin and a switching tube, wherein the switching tube comprises a source electrode which is connected with the current signal sampling pin to receive a current signal; the sampling resistor is connected between the current signal sampling pin and the second grounding pin, and the output end of the logic control unit is connected with the control electrode of the switch tube to control the switch-off or switch-on of the switch tube.
11. The control circuit of claim 10,
the chip integrated module further includes: the logic control unit comprises a logic control unit and a logic control unit, wherein the logic control unit comprises a first grounding pin and a second grounding pin, the first grounding pin is connected with the logic control unit, the second grounding pin is connected with the first grounding pin, and the logic control unit is connected with the second grounding pin;
the control circuit comprises a filter, the filter comprises a first inductor, and two ends of the first inductor are respectively connected with the first grounding pin and the second grounding pin.
12. The control circuit of claim 11, wherein the rectifying unit further has a rectifying output; the chip integrated module also comprises a power supply voltage input pin which is connected with the rectification output end;
the filter comprises a first capacitor, the anode of the first capacitor is connected with the power supply voltage input pin, and the cathode of the first capacitor is connected with the second grounding pin.
13. The control circuit of claim 12, further comprising a chopper connected between the chip integration module and a load.
14. The control circuit according to claim 13, wherein the chopper comprises a second inductor and a second capacitor, the second inductor being connected between the drain of the switching tube and the load; the anode of the second capacitor is connected with the power supply voltage input pin, and the cathode of the second capacitor is connected with the second grounding pin.
15. The control circuit of claim 11, further comprising an ac module comprising an ac source and a fuse, the ac source connected to the ac input pin; the fuse is connected between the alternating current source and the alternating current input pin.
16. A lighting device comprising a light emitting unit, and the control circuit according to any one of claims 9 to 15, wherein the control circuit inputs a direct current to the light emitting unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020947553.9U CN212086541U (en) | 2020-05-29 | 2020-05-29 | Chip integrated module, control circuit and lighting device |
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| CN202020947553.9U CN212086541U (en) | 2020-05-29 | 2020-05-29 | Chip integrated module, control circuit and lighting device |
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| CN212086541U true CN212086541U (en) | 2020-12-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112996174A (en) * | 2021-04-17 | 2021-06-18 | 深圳科宏健半导体照明有限公司 | High-heat-dissipation type explosion-proof LED industrial illuminating lamp |
-
2020
- 2020-05-29 CN CN202020947553.9U patent/CN212086541U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112996174A (en) * | 2021-04-17 | 2021-06-18 | 深圳科宏健半导体照明有限公司 | High-heat-dissipation type explosion-proof LED industrial illuminating lamp |
| CN112996174B (en) * | 2021-04-17 | 2023-06-27 | 深圳科宏健半导体照明有限公司 | High heat dissipation type explosion-proof LED industrial lighting lamp |
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