CN103347356A - HID lamp power supplying method, circuit used by same and working method of circuit - Google Patents
HID lamp power supplying method, circuit used by same and working method of circuit Download PDFInfo
- Publication number
- CN103347356A CN103347356A CN2013102850487A CN201310285048A CN103347356A CN 103347356 A CN103347356 A CN 103347356A CN 2013102850487 A CN2013102850487 A CN 2013102850487A CN 201310285048 A CN201310285048 A CN 201310285048A CN 103347356 A CN103347356 A CN 103347356A
- Authority
- CN
- China
- Prior art keywords
- power
- transformation module
- input
- circuit
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
The invention provides an HID lamp power supplying method, a circuit used by the HID lamp power supplying method and a working method of the circuit. The HID lamp power supplying method improves the reliability of power supplying of an HID lamp. The HID lamp power supplying circuit is externally connected at the two ends of an HID lamp load, is high in reliability and capable of ensuring that a lamp tube stably works in a flicker-free and jitter-free mode. The working method of the HID lamp power supplying circuit can be suitable for different types of HID lamps and meet different starting characteristic modes and power requirements.
Description
Technical field
The present invention relates to the high-intensity gas discharge lamp technical field, more particularly, relate to a kind of power supply of high-intensity gas discharge lamp.
Background technology
The HID lamp is called high-intensity gas discharge lamp again, and this class lamp need be operated under the voltage of lower frequency could steady operation (being lower than 1kHz as frequency), works under the high frequency condition of power supply optical flare jitter phenomenon takes place easily, as the acoustic resonance phenomenon.
Ripe in the market HID lamp power supply mainly contains full-bridge circuit, BUCK half-bridge circuit, three kinds of schemes of Inductive ballast:
1, full-bridge circuit: full-bridge circuit is made up of four switch elements, and full-bridge circuit can be good at providing the interchange low frequency operation voltage (as the PWM square-wave voltage) of HID lamp, and Dead Time is short, and light is stable; Because lamp is to be series in the middle of the upper and lower arm bridge switch element, as shown in Figure 1; Circuit impedance is little, and electric current and power were bigger when lamp started, and needing to be particularly suitable for lamp to start the back luminous flux application scenario fast of rising, and as HID traffic lights such as automobile, trains, the starting power of lamp is greater than steady operation power;
2, BUCK half-bridge circuit: sort circuit is used common commercial, industrial lighting at present, and it generally is slowly to rise to rated power with the characteristic variations of lamp that lamp starts back power, and luminous flux also is by the low normal value that rises to; Lamp can be realized low frequency work, and light is stable;
3, Inductive ballast: a kind of ballast that is series between AC power and the lamp, starting back light power also is from little, rises to rated power with modulation characteristic, and luminous flux also is to rise to normal value by low, and the lamp operating frequency is the alternating current input power supplying frequency; The light of lighting a lamp under 50/60Hz frequency civil power has slight flashing, and lamp power changes with the variation of input voltage.
The operation principle of existing full-bridge circuit is: Q2 is bridge low-end switch element, driving voltage is by the LO port output of chip, the LO driving voltage of chip internal comes from low-tension supply VCC(and is generally direct current 9-15V), when the Q2 conducting, Q1 and Q4 turn-off, the Q3 conducting, point modulating voltage HV is applied on the HID lamp through Q3, ignition coil, HID lamp, Q2, and DC1 is low level.Because the conducting of Q2, the source S of Q1 is also received low level (GND) on the ground by Q2, and low-tension supply VCC is through chip internal D(diode or circuit) charge for capacitor C 2, after the voltage on the C2 is full of near the VCC magnitude of voltage.Q2 and Q3 turn-off when lamp needs the electric current commutation, because the voltage low level end (electric capacity lower end) on the capacitor C 2 is the VS of DC1(chip internal), high-end drive circuit in the chip is applied to the voltage of C2 on the grid G and source S of Q1 by the output of HO port, Q1 is open-minded, and some modulating voltage HV is applied to the HID lamp through Q1, HID lamp, ignition coil, Q4.The amount of capacity of capacitor C 2 depends on parameter and the service time of switch element Q1, guarantees that Q1 can provide enough driving forces during opening.The overlapping conducting of above-mentioned Q1 and Q4 and Q3 and Q2 has formed low-impedance modulating voltage/current circuit, makes modulating voltage/electric current form the PWM square wave, guarantees the steady operation of lamp.
In existing full-bridge circuit, also existing following problem: 1, when the igniting of HID lamp single or multiple and abnormal conditions occur, the VS of DC1(chip internal) end inevitably occurs greater than the positive high voltage pulse of the withstand voltage limit of chip or negative high voltage pulse (being produced by ignition coil); Just/and the negative high voltage pulse impacts drive circuit at chip internal VS end, and overvoltage damages the high/low end drive circuit of chip easily; 2, because the driving voltage (charging voltage value is near VCC) of switch element Q1 needs capacitor C 2 to control to provide through high-end drive circuit, when DC1 holds because of igniting and abnormal conditions appearance instability (just/the negative high voltage pulse), voltage on the capacitor C 2 too can be with DC1(chip internal VS) the voltage transformation changes, with regard to causing Q1 during will opening or open, to make between the grid G/ source S under-voltagely or too high because of HO overtension/low, cause switch element Q1 to damage like this; 3, the proper high-voltage pulse of DC1 or negative high voltage pulse form a voltage difference in source S and the drain D of Q1, cause Q1 leakage/source (D/S) over-voltage breakdown easily; In like manner, Q3 also exists the problems referred to above.Therefore, when driving and in working order under the unsettled situation, Q1, Q3 and driving chip damage easily.
Solution in the market is: the protection device that absorbs high pressure in parallel on two mid point DC1 of bridge and DC2 and 4 switch elements, suppress the inductance/thermistor of peak voltage/electric current etc. as electric capacity, TVS, piezo-resistance etc. and series connection.But this solution has hysteresis quality in time by the method for absorption and inhibition igniting high pressure, and absorbs and inhibition magnitude of voltage instability, and randomness is arranged.Whole life period ignition voltage at lamp is change at random, fixing absorption/inhibition parameter can't ensure the safety of circuit fully, therefore use in the electric ballast of full-bridge circuit, it is the most normal generation during electric ballast damages that the full-bridge circuit switch element damages, and has influence on the development of electric ballast.
Summary of the invention
For overcoming the deficiencies in the prior art, one of them purpose of the present invention is to provide a kind of HID lamp method of supplying power to, has improved HID lamp power supply reliability.Second purpose of the present invention is to provide a kind of HID lamp power circuit, is connected on the two ends of HID lamp load outward, the circuit reliability height, can make fluorescent tube flicker free shake ground steady operation.A further object of the invention is to provide a kind of method of work of HID lamp power circuit, can satisfy dissimilar HID lamps and different starting characteristic mode/power requirements.
In order to achieve the above object, the present invention adopts following technical scheme: a kind of HID lamp method of supplying power to, it is characterized in that, and adopt two power supplys that are connected in parallel to be the power supply of HID lamp in turn; The make-and-break time of described each power supply and output waveform are realized by the type requirement control of control module according to the HID lamp; Two power supplys that are connected in parallel refer to be respectively equipped with to be controlled by control module at two current supply circuits cut-off the state of switch element for the power supply of HID lamp in turn, and described switch element is arranged on the same current potential.Method of supplying power to of the present invention adopts two power supplys that are connected in parallel to replace pipe and high-side driver chip part on the full-bridge, damages the situation that goes up pipe when having avoided using the full-bridge circuit power supply easily, has improved reliability; The break-make of power supply and output waveform are controlled by the PWM control module, kept PWM square wave consistent when powering with full-bridge circuit, can make HID lamp flicker free shake ground steady operation, can satisfy the job requirement of dissimilar HID lamps by changing the output signal of PWM control module simultaneously.Switch element is arranged on the same current potential, and the driving voltage of switch element is to be benchmark with same current potential, can simplify the drive scheme of switch element.
Further scheme is: two power supplys are connected in parallel and refer to, two power supplys are connected in parallel, and are connected to the two ends of input DC power.
A kind of HID lamp power circuit comprises the PWM control module, also comprises:
Be used for control voltage output time, make the direct voltage of input DC power convert the first transformation module and the second transformation module of PWM type square-wave voltage to; The described first transformation module and the second transformation module are parallel to the input DC power two ends respectively; Be the load power supply by the first transformation module and the second transformation module in turn as the power supply of lighting a lamp; Being that load power supply forms first loop by the first transformation module, is that the load power supply forms second loop by the second transformation module;
And the switch element Q2 that is arranged on first loop, is used for the switch element Q3 of the control first loop break-make and is arranged on second loop, is used for the control second loop break-make; One end of the conductive channel end of Q2 and Q3 all is connected with the negative terminal of the power supply of lighting a lamp, and the other end is connected with the second transformation module with the first transformation module respectively;
Described PWM control module is connected with the Q3 signal with the first transformation module, the second transformation module, Q2 respectively.
Compare with full-bridge circuit, go up pipe for two of power supply circuits of the present invention cancellation full-bridge circuit, thereby avoided on the full-bridge circuit pipe because of the high and breakdown damage of ignition voltage; Power supply circuits only adopt two of full-bridge circuit to manage Q2, Q3 realization HID lamp power circuit down, and the low side of pipe pressure/pipe stream when two pipe Q2, Q3 all is arranged on lamp work down, adopt low voltage drive, Q2, Q3 are connected on the same current potential, with the negative pole current potential of the power supply of the lighting a lamp benchmark as driving voltage, so the circuit reliability height.
Further scheme is: described switch element Q2 and Q3 adopt N-type metal-oxide-semiconductor, P type metal-oxide-semiconductor, IGBT, N-type BJT or P type BJT; Adopt the N-type metal-oxide-semiconductor to refer to that the S utmost point of N-type metal-oxide-semiconductor is connected with the negative terminal of the power supply of lighting a lamp, the D utmost point is connected with the first transformation module or the second transformation module, and the G utmost point is connected with the PWM control module; Adopt P type metal-oxide-semiconductor to refer to that the D utmost point of P type metal-oxide-semiconductor is connected with the negative terminal of the power supply of lighting a lamp, the S utmost point is connected with the first transformation module or the second transformation module, and the G utmost point is connected with the PWM control module; Adopt IGBT to refer to that the E utmost point of IGBT is connected with the negative terminal of the power supply of lighting a lamp, the C utmost point is connected with the first transformation module or the second transformation module, and the G utmost point is connected with the PWM control module; Adopt N-type BJT to refer to that the E utmost point of N-type BJT is connected with the negative terminal of the power supply of lighting a lamp, the C utmost point is connected with the first transformation module or the second transformation module, and the B utmost point is connected with the PWM control module; Adopt P type BJT to refer to that the C utmost point of P type BJT is connected with the negative terminal of the power supply of lighting a lamp, the E utmost point is connected with the first transformation module or the second transformation module, and the B utmost point is connected with the PWM control module.
One of them scheme of the first transformation module is: the described first transformation module comprises transformer T1, and T1 is elementary to be parallel to the input DC power two ends by positive and negative sharp circuit, half-bridge circuit, any circuit of recommending in circuit and the full-bridge circuit; T1 time level is connected with load by halfwave rectifier circuit or bridge rectifier circuit; T1 time the level and load between also be provided with filter circuit; The other end of the conductive channel end of Q2 is connected with the first transformation module and refers to that the other end of the conductive channel end of Q2 is connected on the follow-up circuit of described halfwave rectifier circuit or bridge rectifier circuit.
Described T1 is elementary to be parallel to the input DC power two ends by positive and negative sharp circuit and to refer to, the first transformation module also comprises switch element Q1, the first elementary tie point of T1 is connected with the anode of input DC power, and the conductive channel end that the second elementary tie point of T1 passes through Q1 is connected with the negative terminal of input DC power; The Q1 control end is connected with PWM control module signal;
Described T1 is elementary to be parallel to the input DC power two ends by the half-bridge circuit and to refer to, the first transformation module also comprises switch element Q11, Q12 and capacitor C 41, C42, the conductive channel end of Q11 be parallel to the input DC power two ends after the conductive channel end of Q12 is connected, also be parallel to the input DC power two ends after C41 and the C42 series connection simultaneously, the first elementary tie point of T1 is connected in the junction of C41 and C42, and the second elementary tie point of T1 is connected in the junction of Q11 and Q12; The control end of Q11 is connected with PWM control module signal respectively with the control end of Q12;
Described T1 is elementary to be parallel to the input DC power two ends and to refer to by recommending circuit, the first transformation module also comprises switch element Q11 and Q12, the conductive channel end that the first elementary tie point of T1 passes through Q11 is connected with the negative terminal of input DC power, the second elementary tie point of T1 is connected with the anode of input DC power, the conductive channel end that the 3rd elementary tie point of T1 passes through Q12 is connected with the negative terminal of input DC power, and the control end of Q11 is connected with PWM control module signal respectively with the control end of Q12;
Described T1 is elementary to be parallel to the input DC power two ends by the full-bridge circuit and to refer to, the first transformation module also comprises switch element Q11, Q12, Q13 and Q14, the conductive channel end of Q11 be parallel to the input DC power two ends after the conductive channel end of Q12 is connected, simultaneously the conductive channel end of Q13 be parallel to the input DC power two ends after the conductive channel end of Q14 is connected, the first elementary tie point of T1 is connected in the junction of Q13 and Q14, the second elementary tie point of T1 is connected in the junction of Q11 and Q12, the control end of Q11, the control end of Q12, the control end of Q13, the control end of Q14 is connected with PWM control module signal respectively.
The another kind of scheme of the first transformation module is: the described first transformation module comprises inductance L 1, switch element Q1, diode D1 and capacitor C 1; The anode of input DC power is connected with an end of the conductive channel end of Q1, and the other end of the conductive channel end of Q1 is connected with load by L1, and the control end of Q1 is connected with PWM control module signal; The negative electrode of D1 is connected in the junction of Q1 and L1, and the anode of D1 is connected with the negative terminal of input DC power, and the end of C1 is connected the junction of load and L1, and the other end is connected with the negative terminal of input DC power.
Preferred scheme is: the structure of the described second transformation module is identical with the structure of the first transformation module.
Also comprise capacitor C 3, the two ends of C3 and load two ends are connected in parallel.
The method of work of above-mentioned HID lamp power circuit when the HID lamp is worked, comprises the steps:
The first step, PWM control module output high-frequency switching signal controls that the second transformation module quits work, Q2 turn-offs, and controls the work of the first transformation module, Q3 conducting; Work half HID lamp time work period;
In second step, PWM control module output high-frequency switching signal controls that the first transformation module quits work, Q3 turn-offs, and work, the Q2 conducting of controlling the second transformation module; Work half HID lamp time work period; Skip to the first step then.
Power supply circuits of the present invention are by the control of multiple signals, can realize that low frequency PWM square wave or high-frequency PWM square-wave voltage power to the HID lamp, can realize simultaneously that the high-power or little electric current small-power of the big electric current of HID lamp starts, the lamp current impedance loop is low, and the lamp current impedance loop is low; Can satisfy dissimilar HID lamps and different starting characteristic mode/power requirements.
The present invention possesses following outstanding advantage and effect with respect to prior art:
1, method of supplying power to of the present invention adopts two power supplys that are connected in parallel to replace pipe and high-side driver chip part on the full-bridge, damages the situation that goes up pipe when having avoided using the full-bridge circuit power supply easily, has improved reliability; The break-make of power supply and output waveform are controlled by the PWM control module, kept PWM square wave consistent when powering with full-bridge circuit, can make HID lamp flicker free shake ground steady operation, can satisfy the job requirement of dissimilar HID lamps by changing the output signal of PWM control module simultaneously.Switch element is arranged on the same current potential, and the driving voltage of switch element is to be benchmark with same current potential, can simplify the drive scheme of switch element;
2, go up pipe for two of power supply circuits of the present invention cancellation full-bridge circuit, thereby avoided on the full-bridge circuit pipe because of the high and breakdown damage of ignition voltage; Power supply circuits only adopt two of full-bridge circuit to manage Q2, Q3 realization HID lamp power circuit down, and the low side of pipe pressure/pipe stream when two pipe Q2, Q3 all is arranged on lamp work down, adopt low voltage drive, Q2, Q3 are connected on the same current potential, with the negative pole current potential of the power supply of the lighting a lamp benchmark as driving voltage, so the circuit reliability height;
3, power supply circuits of the present invention can make fluorescent tube flicker free shake ground steady operation;
4, power supply circuits of the present invention are by the control of multiple signals, can realize that low frequency PWM square wave or high-frequency PWM square-wave voltage power to the HID lamp, can realize that the high-power or little electric current small-power of the big electric current of HID lamp starts simultaneously, and the lamp current impedance loop is low; Can satisfy dissimilar HID lamps and different starting characteristic mode/power requirements.
Description of drawings
Fig. 1 is the existing circuit diagram that adopts the power supply of full-bridge circuit scheme;
Fig. 2 is the schematic diagram of embodiment two power supply circuits;
Fig. 3 is the operation principle schematic diagram of power supply circuits of the present invention;
Fig. 4 is the schematic diagram of the another kind of scheme of embodiment two power supply circuits;
Fig. 5 is the schematic diagram of embodiment three power supply circuits;
Fig. 6 is the schematic diagram of embodiment four power supply circuits;
Fig. 7 is the schematic diagram of embodiment five power supply circuits;
Fig. 8 is the schematic diagram of embodiment six power supply circuits;
Fig. 9 is the schematic diagram that primary is parallel to the input DC power two ends in the power supply circuits of the present invention by the half-bridge circuit;
Figure 10 is that primary is parallel to the schematic diagram at input DC power two ends by recommending circuit in the power supply circuits of the present invention;
Figure 11 is the schematic diagram that primary is parallel to the input DC power two ends in the power supply circuits of the present invention by the full-bridge circuit;
Figure 12 is the schematic diagram that transformer secondary output is connected with load by the bridge rectifier circuit in the power supply circuits of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with embodiment, but embodiments of the present invention are not limited thereto.
Embodiment one
Present embodiment HID lamp method of supplying power to adopts two power supplys that are connected in parallel to be the power supply of HID lamp in turn; The make-and-break time of each power supply and output waveform are realized by the type requirement control of control module according to the HID lamp; Two power supplys that are connected in parallel refer to be respectively equipped with to be controlled by control module at two current supply circuits cut-off the state of switch element for the power supply of HID lamp in turn, and switch element is arranged on the same current potential.Method of supplying power to of the present invention adopts two power supplys that are connected in parallel to replace pipe and high-side driver chip part on the full-bridge, damages the situation that goes up pipe when having avoided using the full-bridge circuit power supply easily, has improved reliability; The break-make of power supply and output waveform are controlled by the PWM control module, kept PWM square wave consistent when powering with full-bridge circuit, can make HID lamp flicker free shake ground steady operation, can satisfy the job requirement of dissimilar HID lamps by changing the output signal of PWM control module simultaneously.Switch element is arranged on the same current potential, and the driving voltage of switch element is to be benchmark with same current potential, can simplify the drive scheme of switch element.
Embodiment two
Present embodiment HID lamp power circuit, as shown in Figure 2; Comprise PWM control module, the first transformation module, the second transformation module and switch element Q2 and Q3.The first transformation module and the second transformation module are used for control voltage output time, make the direct voltage of input DC power convert PWM type square-wave voltage to; The first transformation module and the second transformation module are parallel to the input DC power two ends respectively, are the load power supply by the first transformation module and the second transformation module in turn as the power supply of lighting a lamp; Load is composed in series by HID lamp and ignition coil; The first transformation module and the second transformation module be the two ends of external load respectively.Being that load power supply forms first loop by the first transformation module, is that the load power supply forms second loop by the second transformation module.Q3 is arranged on first loop, is used for the control first loop break-make, and Q2 is arranged on second loop, be used for the control second loop break-make; One end of the conductive channel end of Q2 and Q3 all is connected with the negative terminal of the power supply of lighting a lamp, and the other end is connected with the second transformation module with the first transformation module respectively.The PWM control module is connected with the Q3 signal with the first transformation module, the second transformation module, Q2 respectively.The control module that the PWM control module can adopt microcomputer control module or analog circuit to form.The negative terminal of power supply of lighting a lamp can directly be connected with the negative terminal of input DC power as shown in Figure 2, also can disconnect with the negative terminal of input DC power, light a lamp power supply and input DC power is formed isolate.
In Fig. 2, Q2 and Q3 adopt the N-type metal-oxide-semiconductor; The S utmost point of Q2 connects the negative terminal of the power supply of lighting a lamp, and the D utmost point connects the first transformation module, and the G utmost point is connected with PWM control module signal; The S utmost point of Q3 connects the negative terminal of the power supply of lighting a lamp, and the D utmost point connects the second transformation module, and the G utmost point is connected with PWM control module signal.
Q2 and Q3 also can adopt P type metal-oxide-semiconductor, IGBT, N-type BJT or P type BJT except can adopting the N-type metal-oxide-semiconductor.Adopt P type metal-oxide-semiconductor to refer to that the D utmost point of P type metal-oxide-semiconductor is connected with the negative terminal of the power supply of lighting a lamp, the S utmost point is connected with the first transformation module or the second transformation module, and the G utmost point is connected with the PWM control module; Adopt IGBT to refer to that the E utmost point of IGBT is connected with the negative terminal of the power supply of lighting a lamp, the C utmost point is connected with the first transformation module or the second transformation module, and the G utmost point is connected with the PWM control module; Adopt N-type BJT to refer to that the E utmost point of N-type BJT is connected with the negative terminal of the power supply of lighting a lamp, the C utmost point is connected with the first transformation module or the second transformation module, and the B utmost point is connected with the PWM control module; Adopt P type BJT to refer to that the C utmost point of P type BJT is connected with the negative terminal of the power supply of lighting a lamp, the E utmost point is connected with the first transformation module or the second transformation module, and the B utmost point is connected with the PWM control module.
The first transformation module comprises transformer T1, switch element Q1, diode D1, T1 is elementary to be parallel to the input DC power two ends by positive and negative sharp circuit, concrete scheme is: the first elementary tie point of T1 is connected with the anode of input DC power, the conductive channel end that the second elementary tie point of T1 passes through Q1 is connected with the negative terminal of input DC power, Q1 adopts the N-type metal-oxide-semiconductor, the D utmost point of Q1 connects the second elementary tie point of T1, and the S utmost point connects the negative terminal of input DC power; The control end of Q1, namely the G utmost point is connected with PWM control module signal.T1 time level is connected with an end of load by the halfwave rectifier circuit, concrete scheme is: first tie point of T1 level is connected with load by D1, the anode of D1 connects first tie point of T1 level, and negative electrode connects load, and second tie point of T1 level is connected with the negative terminal of the power supply of lighting a lamp.T1 time level is connected with an end of load by the halfwave rectifier circuit, also can adopt another kind of scheme: as shown in Figure 4, first tie point of T1 level is connected with load, and second tie point of T1 level is connected with the negative terminal of the power supply of lighting a lamp by D1; The anode of D1 connects the negative terminal of the power supply of lighting a lamp, and negative electrode connects second tie point of T1 level.T1 time the level and load between also be provided with filter circuit, concrete scheme is: the first transformation module also comprises capacitor C 1, and the end of C1 is connected the junction of load and D1, the other end is connected with the negative terminal of the power supply of lighting a lamp.
T1 is elementary also can to adopt alternate manner to be parallel to the input DC power two ends except adopting the positive and negative sharp circuit that passes through as shown in Figure 2 to be parallel to the input DC power two ends, for example the half-bridge circuit, recommend circuit or full-bridge circuit.
T1 is elementary to be parallel to the input DC power two ends by the half-bridge circuit and to refer to, as shown in Figure 9, the first transformation module also comprises switch element Q11, Q12 and capacitor C 41, C42, the conductive channel end of Q11 be parallel to the input DC power two ends after the conductive channel end of Q12 is connected, also be parallel to the input DC power two ends after C41 and the C42 series connection simultaneously, the first elementary tie point of T1 is connected in the junction of C41 and C42, and the second elementary tie point of T1 is connected in the junction of Q11 and Q12; The control end of Q11 is connected with PWM control module signal respectively with the control end of Q12.
T1 is elementary to be parallel to the input DC power two ends and to refer to by recommending circuit, as shown in figure 10, the first transformation module also comprises switch element Q11 and Q12, the conductive channel end that the first elementary tie point of T1 passes through Q11 is connected with the negative terminal of input DC power, the second elementary tie point of T1 is connected with the anode of input DC power, the conductive channel end that the 3rd elementary tie point of T1 passes through Q12 is connected with the negative terminal of input DC power, and the control end of Q11 is connected with PWM control module signal respectively with the control end of Q12.
T1 is elementary to be parallel to the input DC power two ends by the full-bridge circuit and to refer to, as shown in figure 11, the first transformation module also comprises switch element Q11, Q12, Q13 and Q14, the conductive channel end of Q11 be parallel to the input DC power two ends after the conductive channel end of Q12 is connected, simultaneously the conductive channel end of Q13 be parallel to the input DC power two ends after the conductive channel end of Q14 is connected, the first elementary tie point of T1 is connected in the junction of Q13 and Q14, the second elementary tie point of T1 is connected in the junction of Q11 and Q12, the control end of Q11, the control end of Q12, the control end of Q13, the control end of Q14 is connected with PWM control module signal respectively.
T1 level also can be passed through the bridge rectifier circuit and be connected with an end of load, as shown in figure 12 except can adopting pass through the halfwave rectifier circuit and an end of load is connected as shown in Figure 2.
The structure of the second transformation module is identical with the structure of the first transformation module, and the second transformation module is connected with the other end of load, and the second transformation module is connected with PWM control module signal.
The principle of present embodiment power supply circuits is: in the first transformation module, the control signal PWM1 of Q1 is high-frequency switching signal, Q1 and transformer T1 with VCC+/-input DC power carries out forming by D1 and C1 rectifying and wave-filtering after the conversion first direct current supply voltage DC1 of load again; In like manner, the second transformation module forms second direct current supply voltage DC2 of load; DC1, DC2 voltage are formed the supply voltage of lighting a lamp; As shown in Figure 3, Q2 conducting under the control of PWM2 control signal forms second loop by the second transformation module for power supply, and current path is DC2 end-HID lamp-ignition coil-Q2-C2/D2/T2; Q3 conducting under the control of PWM3 control signal forms first loop by the first transformation module for power supply, and current path is DC1 end-ignition coil-HID lamp-Q3-C1/D1/T1; HID lamp square wave working current loop has been formed in first loop and second loop; The work schedule of the output signal of PWM control module is as follows: control signal PWM1 and PWM3, PWM4 and PWM2 work respectively simultaneously, between PWM1 and the PWM3 or can add between PWM4 and the PWM2 Dead Time (non-overlapping time) or the overlapping time that different lamps need be controlled; But answer alternation between control signal PWM1 and PWM3 and PWM4 and the PWM2, avoid PWM1 and PWM2 to work simultaneously and cause voltage DC1 short circuit; Avoid PWM4 and PWM3 to work simultaneously and cause voltage DC2 short circuit.
The method of work of present embodiment power supply circuits when the HID lamp is worked, comprises the steps:
The first step, PWM control module output high-frequency switching signal controls that the second transformation module quits work, Q2 turn-offs, and controls the work of the first transformation module, Q3 conducting; Work half HID lamp time work period;
In second step, PWM control module output high-frequency switching signal controls that the first transformation module quits work, Q3 turn-offs, and work, the Q2 conducting of controlling the second transformation module; Work half HID lamp time work period; Skip to the first step then.
One of them outstanding advantage of the present invention is: in full-bridge circuit, full-bridge circuit comprises tube portion and following tube portion, the driving voltage of last tube portion switch element is benchmark with the full-bridge mid point, in the lamp start-up course, produce high ignition voltage because of the full-bridge mid point, circuit can not absorb fully, and causes the pipe overvoltage to damage; Simultaneously since the full-bridge mid-point voltage start and stabilization process in all be constantly to change, cause driving voltage with respect to mid point also in transformation, switch element driving voltage instability also causes the switch element damage easily.Compare with full-bridge circuit, go up pipe for two of power supply circuits of the present invention cancellation full-bridge circuit, thereby avoided on the full-bridge circuit pipe because of the high and breakdown damage of ignition voltage; Power supply circuits only adopt two of full-bridge circuit to manage Q2, Q3 realization HID lamp power circuit down, and the low side of pipe pressure/pipe stream when two pipe Q2, Q3 all is arranged on lamp work down, adopt low voltage drive, Q2, Q3 are connected on the same current potential, with the negative pole current potential of the power supply of the lighting a lamp benchmark as driving voltage, so the circuit reliability height.
The present invention also exists following advantage: power supply circuits can be realized the adjustment of modulating voltage size of current, cycle time (PWM duty ratio), power output by the control of multiple signals, to satisfy dissimilar HID lamps and different starting characteristic mode/power requirements; The lamp current impedance loop is low; Can make fluorescent tube flicker free shake ground steady operation.
Embodiment three
The present embodiment power supply circuits as shown in Figure 5, be with the distinctive points of embodiment two power supply circuits, the D1 of the first transformation module is connected between the negative terminal of second tie point of T1 level and the power supply of lighting a lamp, the anode of D1 is connected with the negative terminal of the power supply of lighting a lamp, and the negative electrode of D1 is connected with second tie point of T1 level; The structure of the second transformation module is identical with the structure of the first transformation module.Q2 is parallel to the two ends of D1, and Q3 is parallel to the two ends of D2.The other parts of present embodiment power supply circuits are identical with embodiment two.
The principle of present embodiment power supply circuits is: Q2 conducting under the control of PWM2 control signal forms second loop by the second transformation module for power supply, and current path is DC2 end-HID lamp-ignition coil-T1 level-Q2 of transformer-D2/C2/T2; Q3 conducting under the control of PWM3 control signal forms first loop by the first transformation module for power supply, and current path is DC1 end-ignition coil-T2 level-Q3 of HID lamp-transformer-D1/C1/T1.
Embodiment four
The present embodiment power supply circuits as shown in Figure 6, the structure of the first transformation module and the second transformation module and embodiment's two is inequality.The first transformation module of present embodiment power supply circuits comprises inductance L 1, switch element Q1, diode D1 and capacitor C 1.The D utmost point of Q1 is connected with the anode of input DC power, and the S utmost point of Q1 is connected with load by L1, and the G utmost point of Q1 is connected with PWM control module signal.The negative electrode of D1 is connected in the junction of Q1 and L1, and the anode of D1 is connected with the negative terminal of input DC power, and the end of C1 is connected the junction of load and L1, and the other end is connected with the negative terminal of input DC power.The structure of the second transformation module is identical with the structure of the first transformation module.The other parts of present embodiment power supply circuits are identical with embodiment two.
The principle of present embodiment power supply circuits is: in the first transformation module, the control signal PWM1 of Q1 is high-frequency switching signal, switch element Q1, inductance L 1, diode D1, filter capacitor C1 form reduction voltage circuit, input DC power voltage are carried out forming after the conversion first direct current supply voltage DC1 of lamp; In like manner, the second transformation module forms second direct current supply voltage DC2 of load; Q2 conducting under the control of PWM2 control signal forms second loop by the second transformation module for power supply, and current path is DC2 end-HID lamp-ignition coil-Q2-C2; Q3 conducting under the control of PWM3 control signal forms first loop by the first transformation module for power supply, and current path is DC1 end-ignition coil-HID lamp-Q3-C1.
Embodiment five
The present embodiment power supply circuits are with the difference of embodiment two power supply circuits that as shown in Figure 7 second tie point of T1 level of the first transformation module is not to be connected with the negative terminal of the power supply of lighting a lamp, and are connected but pass through the second elementary tie point of capacitor C 5 and T1.The structure of the second transformation module is identical with the structure of the first transformation module.The other parts of present embodiment power supply circuits are identical with embodiment two.
Embodiment six
The present embodiment power supply circuits are with the difference of embodiment two power supply circuits as shown in Figure 8, increase shunt capacitance C3 at the two ends of load.The other parts of present embodiment power supply circuits are identical with embodiment two.The benefit that increases capacitor C 3 is to reduce the voltage ripple at lamp two ends.
Above-described embodiment is preferred implementation of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spiritual essence of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (10)
1. a HID lamp method of supplying power to is characterized in that, adopts two power supplys that are connected in parallel to be the power supply of HID lamp in turn; The make-and-break time of described each power supply and output waveform are realized by the type requirement control of control module according to the HID lamp; Two power supplys that are connected in parallel refer to be respectively equipped with to be controlled by control module at two current supply circuits cut-off the state of switch element for the power supply of HID lamp in turn, and described switch element is arranged on the same current potential.
2. HID lamp method of supplying power to according to claim 1 is characterized in that, two power supplys are connected in parallel and refer to, two power supplys are connected in parallel, and is connected to the two ends of input DC power.
3. a HID lamp power circuit is characterized in that, comprises the PWM control module, also comprises:
Be used for control voltage output time, make the direct voltage of input DC power convert the first transformation module and the second transformation module of PWM type square-wave voltage to; The described first transformation module and the second transformation module are parallel to the input DC power two ends respectively; Be the load power supply by the first transformation module and the second transformation module in turn as the power supply of lighting a lamp; Being that load power supply forms first loop by the first transformation module, is that the load power supply forms second loop by the second transformation module;
And the switch element Q2 that is arranged on first loop, is used for the switch element Q3 of the control first loop break-make and is arranged on second loop, is used for the control second loop break-make; One end of the conductive channel end of Q2 and Q3 all is connected with the negative terminal of the power supply of lighting a lamp, and the other end is connected with the second transformation module with the first transformation module respectively;
Described PWM control module is connected with the Q3 signal with the first transformation module, the second transformation module, Q2 respectively.
4. HID lamp power circuit according to claim 3 is characterized in that, described switch element Q2 and Q3 adopt N-type metal-oxide-semiconductor, P type metal-oxide-semiconductor, IGBT, N-type BJT or P type BJT;
Adopt the N-type metal-oxide-semiconductor to refer to that the S utmost point of N-type metal-oxide-semiconductor is connected with the negative terminal of the power supply of lighting a lamp, the D utmost point is connected with the first transformation module or the second transformation module, and the G utmost point is connected with the PWM control module; Adopt P type metal-oxide-semiconductor to refer to that the D utmost point of P type metal-oxide-semiconductor is connected with the negative terminal of the power supply of lighting a lamp, the S utmost point is connected with the first transformation module or the second transformation module, and the G utmost point is connected with the PWM control module; Adopt IGBT to refer to that the E utmost point of IGBT is connected with the negative terminal of the power supply of lighting a lamp, the C utmost point is connected with the first transformation module or the second transformation module, and the G utmost point is connected with the PWM control module; Adopt N-type BJT to refer to that the E utmost point of N-type BJT is connected with the negative terminal of the power supply of lighting a lamp, the C utmost point is connected with the first transformation module or the second transformation module, and the B utmost point is connected with the PWM control module; Adopt P type BJT to refer to that the C utmost point of P type BJT is connected with the negative terminal of the power supply of lighting a lamp, the E utmost point is connected with the first transformation module or the second transformation module, and the B utmost point is connected with the PWM control module.
5. HID lamp power circuit according to claim 4, it is characterized in that, the described first transformation module comprises transformer T1, and T1 is elementary to be parallel to the input DC power two ends by positive and negative sharp circuit, half-bridge circuit, any circuit of recommending in circuit and the full-bridge circuit; T1 time level is connected with load by halfwave rectifier circuit or bridge rectifier circuit; T1 time the level and load between also be provided with filter circuit; The other end of the conductive channel end of Q2 is connected with the first transformation module and refers to that the other end of the conductive channel end of Q2 is connected on the follow-up circuit of described halfwave rectifier circuit or bridge rectifier circuit.
6. HID lamp power circuit according to claim 5, it is characterized in that, described T1 is elementary to be parallel to the input DC power two ends by positive and negative sharp circuit and to refer to, the first transformation module also comprises switch element Q1, the first elementary tie point of T1 is connected with the anode of input DC power, and the conductive channel end that the second elementary tie point of T1 passes through Q1 is connected with the negative terminal of input DC power; The Q1 control end is connected with PWM control module signal;
Described T1 is elementary to be parallel to the input DC power two ends by the half-bridge circuit and to refer to, the first transformation module also comprises switch element Q11, Q12 and capacitor C 41, C42, the conductive channel end of Q11 be parallel to the input DC power two ends after the conductive channel end of Q12 is connected, also be parallel to the input DC power two ends after C41 and the C42 series connection simultaneously, the first elementary tie point of T1 is connected in the junction of C41 and C42, and the second elementary tie point of T1 is connected in the junction of Q11 and Q12; The control end of Q11 is connected with PWM control module signal respectively with the control end of Q12;
Described T1 is elementary to be parallel to the input DC power two ends and to refer to by recommending circuit, the first transformation module also comprises switch element Q11 and Q12, the conductive channel end that the first elementary tie point of T1 passes through Q11 is connected with the negative terminal of input DC power, the second elementary tie point of T1 is connected with the anode of input DC power, the conductive channel end that the 3rd elementary tie point of T1 passes through Q12 is connected with the negative terminal of input DC power, and the control end of Q11 is connected with PWM control module signal respectively with the control end of Q12;
Described T1 is elementary to be parallel to the input DC power two ends by the full-bridge circuit and to refer to, the first transformation module also comprises switch element Q11, Q12, Q13 and Q14, the conductive channel end of Q11 be parallel to the input DC power two ends after the conductive channel end of Q12 is connected, simultaneously the conductive channel end of Q13 be parallel to the input DC power two ends after the conductive channel end of Q14 is connected, the first elementary tie point of T1 is connected in the junction of Q13 and Q14, the second elementary tie point of T1 is connected in the junction of Q11 and Q12, the control end of Q11, the control end of Q12, the control end of Q13, the control end of Q14 is connected with PWM control module signal respectively.
7. HID lamp power circuit according to claim 4 is characterized in that, the described first transformation module comprises inductance L 1, switch element Q1, diode D1 and capacitor C 1; The anode of input DC power is connected with an end of the conductive channel end of Q1, and the other end of the conductive channel end of Q1 is connected with load by L1, and the control end of Q1 is connected with PWM control module signal; The negative electrode of D1 is connected in the junction of Q1 and L1, and the anode of D1 is connected with the negative terminal of input DC power, and the end of C1 is connected the junction of load and L1, and the other end is connected with the negative terminal of input DC power.
8. according to claim 6 or 7 described HID lamp power circuits, it is characterized in that the structure of the described second transformation module is identical with the structure of the first transformation module.
9. HID lamp power circuit according to claim 8 is characterized in that, also comprises capacitor C 3, and the two ends of C3 and load two ends are connected in parallel.
10. the method for work of HID lamp power circuit according to claim 8 is characterized in that, when the HID lamp is worked, comprises the steps:
The first step, PWM control module output high-frequency switching signal controls that the second transformation module quits work, Q2 turn-offs, and controls the work of the first transformation module, Q3 conducting; Work half HID lamp time work period;
In second step, PWM control module output high-frequency switching signal controls that the first transformation module quits work, Q3 turn-offs, and work, the Q2 conducting of controlling the second transformation module; Work half HID lamp time work period; Skip to the first step then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310285048.7A CN103347356B (en) | 2013-07-08 | 2013-07-08 | The method of work of HID lamp method of supplying power to and circuit used and this circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310285048.7A CN103347356B (en) | 2013-07-08 | 2013-07-08 | The method of work of HID lamp method of supplying power to and circuit used and this circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103347356A true CN103347356A (en) | 2013-10-09 |
| CN103347356B CN103347356B (en) | 2016-04-13 |
Family
ID=49282123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310285048.7A Active CN103347356B (en) | 2013-07-08 | 2013-07-08 | The method of work of HID lamp method of supplying power to and circuit used and this circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103347356B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103796403A (en) * | 2013-11-07 | 2014-05-14 | 福建睿能科技股份有限公司 | Intelligent HID lamp lighting method, HID electronic ballast and HID illumination system |
| CN104883034A (en) * | 2015-05-14 | 2015-09-02 | 华为技术有限公司 | Driving circuit of switching bridge arm and switching power supply |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101815393A (en) * | 2009-02-24 | 2010-08-25 | 松下电工株式会社 | Discharge lamp illuminator and have the lighting apparatus of this device |
| CN102685997A (en) * | 2011-03-09 | 2012-09-19 | 深圳市飞狮电子工业有限公司 | High-frequency HID (High Intensity Discharge) electronic ballast with modulated power frequency |
| CN203340390U (en) * | 2013-07-08 | 2013-12-11 | 佛山肆强科技有限公司 | Power supply circuit of HID lamp |
-
2013
- 2013-07-08 CN CN201310285048.7A patent/CN103347356B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101815393A (en) * | 2009-02-24 | 2010-08-25 | 松下电工株式会社 | Discharge lamp illuminator and have the lighting apparatus of this device |
| CN102685997A (en) * | 2011-03-09 | 2012-09-19 | 深圳市飞狮电子工业有限公司 | High-frequency HID (High Intensity Discharge) electronic ballast with modulated power frequency |
| CN203340390U (en) * | 2013-07-08 | 2013-12-11 | 佛山肆强科技有限公司 | Power supply circuit of HID lamp |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103796403A (en) * | 2013-11-07 | 2014-05-14 | 福建睿能科技股份有限公司 | Intelligent HID lamp lighting method, HID electronic ballast and HID illumination system |
| CN104883034A (en) * | 2015-05-14 | 2015-09-02 | 华为技术有限公司 | Driving circuit of switching bridge arm and switching power supply |
| CN104883034B (en) * | 2015-05-14 | 2017-07-14 | 华为技术有限公司 | Drive circuit and Switching Power Supply for switching bridge arm |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103347356B (en) | 2016-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5920155A (en) | Electronic ballast for discharge lamps | |
| EP2131631B1 (en) | Electric discharge lamp operating device, lighting equipment and lighting system | |
| US9955561B2 (en) | Electrodeless fluorescent ballast driving circuit and resonance circuit with added filtration and protection | |
| US9072151B2 (en) | High intensity discharge electronic ballast circuit, electronic ballast, and high intensity discharge lamp | |
| JP4941036B2 (en) | Discharge tube lighting device and semiconductor integrated circuit | |
| CN101461288A (en) | Lamp driving circuit | |
| CN201860494U (en) | Light-emitting diode driving circuit with light modulating sequential control | |
| CN213094534U (en) | Pre-burning circuit of YAG laser generator xenon lamp | |
| US8120264B2 (en) | Discharge lamp lighting circuit | |
| CN203340390U (en) | Power supply circuit of HID lamp | |
| CN103118473B (en) | HID (high intensity discharging lamp) electronic ballast | |
| CN103347356B (en) | The method of work of HID lamp method of supplying power to and circuit used and this circuit | |
| US20170311401A1 (en) | Light emitting device | |
| US6225755B1 (en) | High power factor electronic ballast with simplified circuit topology | |
| CN1925713B (en) | Discharge lamp lighting device | |
| CN102458027B (en) | Control method for lighting circuit and applicable lighting circuit | |
| TWI572252B (en) | Dimmable instant start ballasts and dimming control devices | |
| CN101658072B (en) | Circuit arrangement for igniting and operating a discharge lamp | |
| CN103379719A (en) | Discharge lamp lighting device, and illumination apparatus and vehicle including same | |
| US10152068B1 (en) | Electrical ballast and driving method thereof | |
| US20070164685A1 (en) | Discharge lamp lighting apparatus | |
| US7456583B2 (en) | Electrical circuit with dual stage resonant circuit for igniting a gas discharge lamp | |
| TW201304608A (en) | Lighting apparatus for fluorescent tube and driving method therefor | |
| KR200308301Y1 (en) | Electronic ballaster for fluorescent lamp | |
| CN203574921U (en) | Dimmable electrodeless lamp driving circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |