CN209949495U - Novel electronic ballast drive control circuit - Google Patents
Novel electronic ballast drive control circuit Download PDFInfo
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- CN209949495U CN209949495U CN201920117238.0U CN201920117238U CN209949495U CN 209949495 U CN209949495 U CN 209949495U CN 201920117238 U CN201920117238 U CN 201920117238U CN 209949495 U CN209949495 U CN 209949495U
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- 239000003990 capacitor Substances 0.000 claims abstract description 46
- 238000005070 sampling Methods 0.000 claims abstract description 12
- 230000002159 abnormal effect Effects 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a novel electronic ballast drive control circuit, including power control circuit, unusual protection circuit, voltage sampling circuit, main control chip U1, resistance Rf, timing electric capacity Cf, resistance Rhv, resistance Rlv, MOS pipe Q1, MOS pipe Q2, resonant inductor LE, resonant capacitor C2, bridge arm electric capacity CHB and HID fluorescent tube, main control chip U1's model is L6599, main control chip U1's third pin is connected with timing electric capacity Cf's one end, timing electric capacity Cf's other end ground connection, main control chip U1's fourth pin respectively with its fifth pin, resistance Rf's one end and power control circuit connection, resistance Rf's other end GND, main control chip U1's seventh pin is connected with unusual protection circuit, main control chip U1's fifteenth pin passes through resistance Rhv and MOS pipe Q1's grid connection. The utility model discloses the cost is lower, the function is comprehensive.
Description
Technical Field
The utility model relates to an electronic ballast field, in particular to novel electronic ballast drive control circuit.
Background
The gas discharge lamp is used as an important component of green lighting, and is widely applied to the market in terms of environmental protection and energy conservation. In the using process, a matched electronic conversion device is needed to enable the electronic conversion device to work normally, and the electronic ballast is one of the commonly used electronic conversion devices. The electronic ballast control chip in the current market generally adopts a special control chip, and has higher cost and incomplete functions.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide a novel electronic ballast drive control circuit that the cost is lower, the function is comprehensive.
The utility model provides a technical scheme that its technical problem adopted is: a novel electronic ballast driving control circuit is constructed, and comprises a power control circuit, an abnormal protection circuit, a voltage sampling circuit, a main control chip U1, a resistor Rf, a timing capacitor Cf, a resistor Rhv, a resistor Rlv, an MOS tube Q1, an MOS tube Q2, a resonant inductor LE, a resonant capacitor C2, a bridge arm capacitor CHB and an HID lamp tube, wherein the model of the main control chip U1 is L6599, a third pin of the main control chip U1 is connected with one end of the timing capacitor Cf, the other end of the timing capacitor Cf is grounded GND, a fourth pin of the main control chip U1 is respectively connected with a fifth pin thereof, one end of the resistor Rf and the power control circuit, the other end of the resistor Rf is grounded GND, a seventh pin of the main control chip U1 is connected with the abnormal protection circuit, a fifteenth pin of the main control chip U1 is connected with a grid of the MOS tube Q1 through the resistor Rhv, a fifteenth pin of the main control chip U3 is connected with a grid of the MOS tube Q2 through the resistor 68542, a fourteenth pin of the main control chip U1 is connected to the source of the MOS transistor Q1, the drain of the MOS transistor Q2, and one end of the resonant inductor LE, the other end of the resonant inductor LE is connected to one end of the HID lamp, the other end of the HID lamp is grounded to GND through the bridge arm capacitor CHB, one end of the resonant capacitor C2 is connected to the voltage sampling circuit, the voltage sampling circuit is connected to the abnormal protection circuit, and a tenth pin of the main control chip U1 is connected to the abnormal protection circuit and the source of the MOS transistor Q2.
The novel electronic ballast drive control circuit of the present invention further comprises a resistor RCS, one end of the resistor RCS is connected to the source of the MOS transistor Q2, and the other end of the resistor RCS is grounded GND.
Novel electronic ballast drive control circuit in, still include electric capacity Cboot and diode Dboot, main control chip U1's sixteenth pin respectively with electric capacity Cboot's one end and diode Dboot's negative pole are connected, electric capacity Cboot's the other end with main control chip U1's fourteenth pin is connected, diode Dboot's positive pole with main control chip U1's twelfth pin is connected.
Novel electronic ballast drive control circuit in, still include electric capacity Css, main control chip U1's first pin passes through electric capacity Css ground connection GND.
The novel electronic ballast drive control circuit in, still include resistance R1 and electric capacity C1, main control chip U1's seventh pin respectively with resistance R1's one end and electric capacity C1's one end are connected, resistance R1's the other end and electric capacity C1's the equal ground connection GND of the other end.
Implement the utility model discloses a novel electronic ballast drive control circuit has following beneficial effect: owing to be equipped with power control circuit, unusual protection circuit, voltage sampling circuit, main control chip U1, resistance Rf, timing electric capacity Cf, resistance Rhv, resistance Rlv, MOS pipe Q1, MOS pipe Q2, resonant inductor LE, resonant capacitor C2, bridge arm electric capacity CHB and HID fluorescent tube, main control chip U1's model is L6599, the chip that adopts the LLC power commonly used comes to replace dedicated ballast driver chip as main control module, the function that utilizes ripe LLC chip on the market goes to reach the same purpose of former electronic ballast special chip, can reduce electronic ballast's use cost like this, this novel electronic ballast driver control circuit still has power control and unusual protect function, consequently the utility model discloses the cost is lower, the function is comprehensive.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, 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 creative efforts.
Fig. 1 is a schematic circuit diagram of an embodiment of the driving control circuit of the electronic ballast according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the embodiment of the driving control circuit for electronic ballast of the present invention, the schematic circuit diagram of the driving control circuit for electronic ballast is shown in fig. 1. In fig. 1, the novel electronic ballast driving control circuit includes a power control circuit, an abnormal protection circuit, a voltage sampling circuit, a main control chip U1, a resistor Rf, a timing capacitor Cf, a resistor Rhv, a resistor Rlv, a MOS transistor Q1, a MOS transistor Q2, a resonant inductor LE, a resonant capacitor C2, a bridge arm capacitor CHB, and an HID lamp tube HID LMAP, where the main control chip U1 is of a model L6599, a third pin of the main control chip U1 is connected to one end of the timing capacitor Cf, the other end of the timing capacitor Cf is grounded to GND, a fourth pin of the main control chip U1 is connected to a fifth pin thereof, one end of the resistor Rf and the power control circuit, the other end of the resistor Rf is grounded to GND, a seventh pin of the main control chip U1 is connected to the abnormal protection circuit, a fifteenth pin of the main control chip U1 is connected to a gate of the MOS transistor Q1 through a resistor Rhv, an eleventh pin of the main control chip U1 is connected to a gate of the MOS transistor Q2 through a resistor 38, a fourteenth pin of the main control chip U1 is connected to the source of the MOS transistor Q1, the drain of the MOS transistor Q2, and one end of the resonant inductor LE, the other end of the resonant inductor LE is connected to one end of the HID lamp tube HID LMAP, the other end of the HID lamp tube HID LMAP is grounded GND through the bridge arm capacitor CHB, one end of the resonant capacitor C2 is connected to the voltage sampling circuit, the voltage sampling circuit is connected to the abnormal protection circuit, and a tenth pin of the main control chip U1 is connected to the abnormal protection circuit and the source of the MOS transistor Q2.
The driving control circuit is controlled by an L6599 chip. The L6599 series LLC control chip produced by ST company has the characteristics of low cost, high reliability and the like, and is widely applied to the AC/DC power supply market. L6599 is a precision two-terminal controller for resonant half-bridge topology circuits that provides a 50% duty cycle: the high and low sides 180 are inverted at the same time. The adjustment of the output current is achieved by adjusting the operating frequency.
MOS transistor Q1 and MOS transistor Q2 are half-bridge MOSFETs, and MOS transistor Q1 and MOS transistor Q2 constitute a switching circuit. The resonant capacitor C2 and the resonant inductor LE form a series resonant circuit, and a high voltage is generated on the capacitor during resonance to light the HID lamp HIDLMAP. The resistor Rf and the timing capacitor Cf form an RC frequency conversion circuit, the value of which can change the frequency of driving. The power control circuit can change the driving working frequency by controlling the parameters of the power control circuit so as to achieve the purpose of controlling the power, and particularly, the power control circuit changes the working frequency of the main control chip U1 by changing the voltage of the fourth pin of the main control chip U1.
In this embodiment, after power is turned on, the main control chip U1 provides a driving signal to the MOS transistor Q1 and the MOS transistor Q2, resonates with a series resonant circuit formed by the resonant inductor LE and the resonant capacitor C2, generates a high voltage on the resonant capacitor C2, and lights the HID lamp HID LMAP. The characteristics of inductance direct current resistance alternating current are utilized, and the output impedance and the current are changed by changing the output frequency, so that the purposes of current constancy and power change are achieved. The utility model discloses the cost is lower, the function is comprehensive.
In this embodiment, the driving control circuit of the novel electronic ballast further includes a resistor RCS, one end of the resistor RCS is connected to the source of the MOS transistor Q2, and the other end of the resistor RCS is grounded GND. The resistor RCS forms a current detection circuit, the abnormality protection circuit judges whether the HID lamp tube HID LMAP works normally or not through the voltage sampling circuit and the current detection circuit, if the HID lamp tube HID LMAP works normally, an abnormal signal is output to the seventh pin of the main control chip U1, the output of the main control chip U1 is cut off, and the electronic ballast is protected.
In this embodiment, the driving control circuit of the novel electronic ballast further includes a capacitor Cboot and a diode Dboot, a sixteenth pin of the main control chip U1 is connected to one end of the capacitor Cboot and a cathode of the diode Dboot respectively, the other end of the capacitor Cboot is connected to a fourteenth pin of the main control chip U1, and an anode of the diode Dboot is connected to a twelfth pin of the main control chip U1. The capacitor Cboot and the diode Dboot form a bootstrap circuit to supply power to the high side MOSFET.
In this embodiment, the driving control circuit of the novel electronic ballast further includes a capacitor Css, and the first pin of the main control chip U1 is grounded to GND through the capacitor Css, so as to achieve the purpose of soft start.
In this embodiment, the novel electronic ballast driving control circuit further includes a resistor R1 and a capacitor C1, a seventh pin of the main control chip U1 is connected to one end of the resistor R1 and one end of the capacitor C1, and the other end of the resistor R1 and the other end of the capacitor C1 are both grounded to GND. The second pin of the master control chip U1 is an overload current casting delay off terminal. The resistor R1 and the capacitor C1 are connected in parallel to ground, respectively, to set the maximum duration of the overload current.
In a word, the utility model discloses a chip that LLC power was used commonly comes to remove to replace dedicated ballast driver chip as main control module, and the function that utilizes ripe LLC chip on the market removes to reach the same purpose of the dedicated chip of former electronic ballast, can reduce electronic ballast's use cost like this, and this novel electronic ballast drive control circuit still has power control and unusual protect function, consequently the utility model discloses the cost is lower, the function is comprehensive.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A novel electronic ballast drive control circuit is characterized by comprising a power control circuit, an abnormal protection circuit, a voltage sampling circuit, a main control chip U1, a resistor Rf, a timing capacitor Cf, a resistor Rhv, a resistor Rlv, an MOS tube Q1, an MOS tube Q2, a resonant inductor LE, a resonant capacitor C2, a bridge arm capacitor CHB and an HID lamp tube, wherein the model of the main control chip U1 is L6599, a third pin of the main control chip U1 is connected with one end of the timing capacitor Cf, the other end of the timing capacitor Cf is grounded GND, a fourth pin of the main control chip U1 is respectively connected with a fifth pin thereof, one end of the resistor Rf and the power control circuit, the other end of the resistor Rf is grounded GND, a seventh pin of the main control chip U1 is connected with the abnormal protection circuit, a fifteenth pin of the main control chip U1 is connected with a gate of the MOS tube Q1 through the resistor Rhv, an eleventh pin of the main control chip U1 is connected to the gate of the MOS transistor Q2 through the resistor Rlv, a fourteenth pin of the main control chip U1 is connected to the source of the MOS transistor Q1, the drain of the MOS transistor Q2, and one end of the resonant inductor LE, the other end of the resonant inductor LE is connected to one end of the HID lamp tube, the other end of the HID lamp tube is grounded to GND through the bridge arm capacitor CHB, one end of the resonant capacitor C2 is connected to the voltage sampling circuit, the voltage sampling circuit is connected to the abnormal protection circuit, and a tenth pin of the main control chip U1 is connected to the abnormal protection circuit and the source of the MOS transistor Q2.
2. The driving control circuit for the novel electronic ballast as claimed in claim 1, further comprising a resistor RCS, wherein one end of the resistor RCS is connected to the source of the MOS transistor Q2, and the other end of the resistor RCS is grounded GND.
3. The driving control circuit for the novel electronic ballast as claimed in claim 2, further comprising a capacitor Cboot and a diode Dboot, wherein the sixteenth pin of the main control chip U1 is connected to one end of the capacitor Cboot and the cathode of the diode Dboot respectively, the other end of the capacitor Cboot is connected to the fourteenth pin of the main control chip U1, and the anode of the diode Dboot is connected to the twelfth pin of the main control chip U1.
4. The driving control circuit for the novel electronic ballast as claimed in claim 3, further comprising a capacitor Css, wherein the first pin of the main control chip U1 is connected to GND through the capacitor Css.
5. The novel electronic ballast drive control circuit according to any one of claims 1 to 4, further comprising a resistor R1 and a capacitor C1, wherein the seventh pin of the main control chip U1 is connected to one end of the resistor R1 and one end of the capacitor C1, respectively, and the other end of the resistor R1 and the other end of the capacitor C1 are both grounded to GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920117238.0U CN209949495U (en) | 2019-01-23 | 2019-01-23 | Novel electronic ballast drive control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920117238.0U CN209949495U (en) | 2019-01-23 | 2019-01-23 | Novel electronic ballast drive control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209949495U true CN209949495U (en) | 2020-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920117238.0U Expired - Fee Related CN209949495U (en) | 2019-01-23 | 2019-01-23 | Novel electronic ballast drive control circuit |
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| Country | Link |
|---|---|
| CN (1) | CN209949495U (en) |
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2019
- 2019-01-23 CN CN201920117238.0U patent/CN209949495U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200114 |