CN105515416A - Efficient high-current-adjustment-rate non-isolated switch power source - Google Patents
Efficient high-current-adjustment-rate non-isolated switch power source Download PDFInfo
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- CN105515416A CN105515416A CN201610089421.5A CN201610089421A CN105515416A CN 105515416 A CN105515416 A CN 105515416A CN 201610089421 A CN201610089421 A CN 201610089421A CN 105515416 A CN105515416 A CN 105515416A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
- H02M1/4216—Arrangements for improving power factor of AC input operating from a three-phase input voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention provides an efficient high-current-adjustment-rate non-isolated switch power source for users. The power-source efficiency is as high as 98% and is much higher than the power-source efficiency of 90% of a switch power source at present, and particularly, the adjustment rate of an output current of the power source is 5/100,000 per V and is much higher than the level of a same-type power source at present. The power source is small in size, the number of use elements is small and even is only fifteen, cooling fins can be avoided, and therefore cost is low. The output power can be 150 watt, the highest output voltage can be 300 V, and the lowest output voltage can be 0 V; in other words, a short circuit can be allowed; the power source further has the potential dimming function and the potential enabling function. If the power source is used for an LED lamp, the technical problems that as for a driving power source of the LED lamp at present, energy consumption is large, the power-source efficiency is not high enough, the cooling fins need to be used, stability is poor, and damage is prone to occurrence are solved.
Description
Technical field
The present invention relates to a kind of efficient high current regulation Unisolated switch supply unit, its efficiency is high especially, and steady flow result is good, can do the power supply of multiple electrical equipment, be particularly suitable for the driving power making LED lamp.
Background technology
Most popular Switching Power Supply is isolation type switching power supply, and its efficiency is generally between 80-90%, and this means that heating is serious, waste energy is many, and heat radiation burden is heavy; And volume is also very large.Existing integrated Unisolated switch power supply HA22004PB (belonging to HA220XXPB series) appears on the market (can look into) on the net at present, and be considered to of the same type in best power supply, its optimum output voltage scope is 150-180 volt, this voltage range extrinsic current with change in voltage Rapid Variable Design, cannot say for sure it is real constant-current supply, maximum output current is 60 milliamperes, and amount to peak power output and be about 10 watts, its index there is no advantage as seen.The patentee once applied for similar patent (ZL201420732224.7, ZL201220391624.7), but not ideal enough, and particularly power factor and output current regulation are all far below this patent.
Summary of the invention
In order to solve the described problem that current LED lamp driving power exists, the object of the invention is to: for people provide a kind of efficient high current regulation Unisolated switch power supply, its circuit is simple, use element is few, volume is little, substantially few of energy loss, can use fin, and efficiency can reach 98%.
The basic technical scheme that the invention provides enforcement is as follows:
A kind of efficient high current regulation Unisolated switch power supply (see Fig. 1), is characterized in that: include current rectifying and wave filtering circuit, switching power circuit, inductive energy storage recovery circuit and export constant current circuit; Wherein:
Current rectifying and wave filtering circuit is made up of rectifier bridge stack Br1 and electric capacity C2, two inputs of rectifier bridge stack Br1 connect 220 volts of electric mains, there are one end ground connection GND and other end output voltage V+ in its two ends exported, between this output voltage wire V+ and ground wire, tipping has the electric capacity C2 of filtering, constitutes described current rectifying and wave filtering circuit.
Switching power circuit, is made up of inductance L 3, resistance R5, field effect transistor F8, voltage stabilizing didoe D9, electric capacity C10, triode T11, resistance R12, resistance R13, electric capacity C14; Wherein, one end of inductance L 3 is connected with V+ pressure-wire, and its other end is connected with pressure-wire V2, and what be connected with pressure-wire V2 also has one end of electric capacity C10, the drain electrode of field effect transistor F8.The source electrode of field effect transistor F8 is connected with pressure-wire V4, and pressure-wire V4 is also connected with the anode of voltage stabilizing didoe D9, one end of resistance R12.The other end of electric capacity C10 is connected with the other end of the base stage of triode T11 and resistance R12; The emitter of triode T11 connects output OUT pressure-wire.The grid of field effect transistor F8 connects pressure-wire V1, and pressure-wire V1 is also connected with the low-pressure end of resistance R5 and the negative electrode of voltage stabilizing didoe D9, and the high-pressure side of resistance R5 is connected with pressure-wire V+; Resistance R5 is the load resistance of triode T11 collector electrode, and the change in voltage of this collector electrode controls the curent change of field effect transistor by the field effect transistor grid be connected.
Inductive energy storage recovery circuit is made up of electric capacity C6, diode D4, diode D7; Wherein: one end of electric capacity C6 is connected with pressure-wire V2, the other end of electric capacity C6 is connected with V3 pressure-wire, and V3 pressure-wire is also connected with the negative electrode of diode D4, the anode of diode D7; The anode of diode D4 is connected with ground wire, and the negative electrode of diode D7 is connected with pressure-wire V4.
Output constant current electrical route resistance R13, electric capacity C14 and electric capacity C15 form; Wherein: the high-pressure side of resistance R13, the high-pressure side of electric capacity C14 are connected with pressure-wire V4, and the low-pressure end of resistance R13 is connected with output OUT pressure-wire with the low-pressure end of electric capacity C14; Output OUT is also connected with the high-pressure side of electric capacity C15, the low-pressure end ground connection GND of electric capacity C15.Can external load such as LED lamp D16 between output OUT and ground wire.
Additional technical feature is:
(1) the load resistance R5 in (see Fig. 2) described field effect transistor F8 grid circuit more can replace to the constant-current source circuit be made up of resistance R17, voltage stabilizing didoe D18, triode T19 and resistance R20; Wherein the collector electrode of triode T19 is connected to V1 pressure-wire, its emitter is connected on the output voltage wire V+ of rectification circuit by resistance R17, its base stage leads up to resistance R20 ground connection GND, and this base stage is separately leaded up to the anode of voltage stabilizing didoe D17 and arrived its negative electrode and be connected on the output voltage wire V+ of rectification circuit.Improve this electric power outputting current regulation like this.
(2) the resistance R5 be connected with output voltage wire V+ in field effect transistor F8 grid circuit is not only replaced to the constant-current source be made up of resistance R17, voltage stabilizing didoe D18, triode T19 and resistance R20 by (see Fig. 3), and bridge heap Br1 an input arm be connected in series the electric capacity C21 that input voltage piled by a reduction bridge between 220 volts of civil powers.So not only can improve this electric power outputting current regulation, also make this electric power output voltage be easy to be reduced to very low, even output short-circuit also can not damaged circuit, to meet technical requirement is high and supply power voltage is lower load as the requirement of light fixture etc.
Operation principle of the present invention is as follows:
220 volts of civil powers are transformed into VD V+ in current rectifying and wave filtering circuit, and its general value is about 310 volts, inputs to the drain electrode of field effect transistor F8 through inductance L 3.When just powering up, electric capacity C14 is uncharged, the base stage of pressure-wire V4 and triode T11 all with the emitter equipotential of triode T11, triode T11 ends, afterwards because the constant current of constant-current source is powered the voltage stabilizing value (we elect 15 volts as) making the voltage of pressure-wire V1 be elevated to voltage stabilizing didoe D9, field effect transistor F8 conducting, electric current flows to its source electrode from the drain electrode of field effect transistor F8, one side makes electric capacity C14 start charging and voltage raises gradually, this electric current of another aspect also flows to output OUT through resistance R13, this voltage raised gradually makes to raise gradually the base voltage of the very sensitive triode T11 of voltage by resistance R12 again, make triode T11 conducting soon, and make pressure-wire V1 be reduced to source voltage close to field effect transistor F8, field effect transistor F8 is ended, the voltage of V4 pressure-wire and triode T11 base stage starts to decline, the voltage of V1 pressure-wire is made to start to raise, so that field effect transistor F8 can be made to start conducting again.When the voltage that the electric current flowing through resistance R13 is set up is elevated to bias value (about 0.7 volt) of triode T11 base stage, this triode starts conducting.Thus form periodic conducting and cut-off oscillatory process.Another aspect, the electric charge be stored on electric capacity C14 also flows out to OUT output through resistance R13, through electric capacity C15 filtering, is supplied to load electric current as required in LED lamp D16 illumination.Electric capacity C10 plays positive feedback effect, to accelerate the switching process of vibrating.Here, change the resistance of resistance R13, just can change this electric power outputting current size.This resistance R13 connects a variable resistor manual adjustments resistance value outside also can being drawn out to two wires or additional circuit adjusting resistance value changes size of current, thus realizes light modulation.If use a mechanical switch or electronic circuit to make external resistance R13 realize disconnecting with closed, then also can realize outside enable.
The pressure reduction of this two voltage of the voltage needed for output voltage V+ and LED lamp D16 is born jointly by field effect transistor F8, inductance L 3: when field effect transistor F8 conducting, this pressure reduction is born by inductance L 3 substantially; When scene effect pipe F8 ends, this pressure reduction is born by field effect transistor F8 substantially, and the energy storage that the electric current now in inductance L 3 produces is reclaimed by inductive energy storage recovery circuit: this power circuit produces in oscillatory process, pressure-wire V2 produces series of rectangular ripple and is sent to pressure-wire V3 by electric capacity C6, charge at square wave positive half cycle electric capacity C6, charging current through diode D7 to electric capacity C14 charge and flow to output OUT through resistance R13; Discharge at square wave negative half period electric capacity C6, discharging current flows to pressure-wire V4 with the electric current flowing through inductance through the field effect transistor F8 of conducting, like this, energy storage in inductance L 3 becomes electric energy and is returned to electric capacity C14 finally flowing in output OUT and is utilized, greatly reduce energy loss, improve power-efficient.
Voltage stabilizing didoe D9 is used for the grid of field effect transistor F8 to be clamped at relative to the voltage of source electrode the voltage stabilizing value of this voltage-stabiliser tube, to ensure that this field effect transistor can not be damaged because of grid overtension.
The constant-current source of resistance R17, voltage stabilizing didoe D18, triode T19 and resistance R20 composition, is used for replacing the load resistance R5 of triode T11, can improves the current regulation of output like this.Electric capacity C21 for reducing power supply AC-input voltage, be more conducive to reducing the output voltage of power supply.
The invention has the beneficial effects as follows, the current regulation of this power supply is considerably beyond the height of current power supply of the same type, reach ten thousand/ severally often lie prostrate even that 100,000/several often volt is (here, the electric power output voltage that is meant to of " ten thousand/several often volt " often changes 1 volt, the relative change of corresponding output current is ten thousand/several meaning, the rest may be inferred by analogy for it), this has exceeded than the HP2200PB power supply feature being known as current highest level is not tens percent or several times, but exceed several magnitude, namely more superior than HA220XXPB series of power many.This power-efficient has brought up to the level of efficiency far exceeding current Switching Power Supply 90%, show that this power-efficient reaches 98% through experiment test, its caloric value reduces greatly, fin can not be needed in practical power device, the supply unit volume manufactured reduces, and required element is little, minimum can to 15, cost obviously reduces, but the power exported has reached 150 watts.The direct voltage exported reaches as high as nearly 300 volts, minimum be 0 volt namely can short circuit and do not damage power supply, also there is potential light modulation and ena-bung function, solve the practical problem existing for current LED lamp driving power.
Accompanying drawing explanation
Fig. 1 is the basic circuit principle assumption diagram of the efficient high current regulation Unisolated switch power supply of the present invention
Fig. 2 is invention circuit diagram field effect transistor grid circuit load resistance being changed by Fig. 1 basis into constant-current source
Fig. 3 is the circuit diagram of the present invention being provided with electric capacity on Fig. 2 basis in rectifier bridge stack one input arm
Mark in figure: Br1 is rectifier bridge stack, C2 is filtering electric capacity, and L3 is inductance, D4 is diode, R5 is resistance, and C6 is electric capacity, and D7 is diode, F8 is field effect transistor, D9 is voltage stabilizing didoe, and C10 is electric capacity, and T11 is triode, R12 is resistance, R13 is resistance, and C14 is electric capacity, and C15 is electric capacity, D16. be light-emitting diode D16a, D16b, D16n, belong to power source loads, R17 is resistance, and D18 is voltage stabilizing didoe, T19 is triode, R20 is resistance, and C21 is arranged on bridge to pile electric capacity in an input arm.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
Embodiment 1: a kind of efficient high current regulation Unisolated switch power supply
As shown in Figure 1: a kind of efficient high current regulation Unisolated switch power supply, include current rectifying and wave filtering circuit, switching power circuit, inductive energy storage recovery circuit and export constant current circuit; Wherein:
A kind of efficient high current regulation Unisolated switch power supply (see Fig. 1), includes current rectifying and wave filtering circuit, switching power circuit, inductive energy storage recovery circuit and exports constant current circuit; Wherein:
Current rectifying and wave filtering circuit is made up of rectifier bridge stack Br1 and electric capacity C2; Wherein, two inputs of rectifier bridge stack Br1 connect 220 volts of electric mains, and there are one end ground connection and other end output voltage V+ in its two ends exported, and between this output voltage wire V+ and ground wire, tipping has the electric capacity C2 of filtering, constitutes described current rectifying and wave filtering circuit.
Switching power circuit, is made up of inductance L 3, resistance R5, field effect transistor F8, voltage stabilizing didoe D9, electric capacity C10, triode T11, resistance R12, resistance R13, electric capacity C14; Wherein, one end of inductance L 3 is connected with V+ pressure-wire, and its other end is connected with pressure-wire V2, and what be connected with pressure-wire V2 also has one end of electric capacity C10, the drain electrode of field effect transistor F8; The source electrode of field effect transistor F8 is connected with pressure-wire V4, and pressure-wire V4 is also connected with the anode of voltage stabilizing didoe D9, one end of resistance R12.The other end of electric capacity C10 is connected with the other end of the base stage of triode T11 and resistance R12; The emitter of triode T11 connects output OUT pressure-wire; The grid of field effect transistor F8 connects pressure-wire V1, and pressure-wire V1 is also connected with the low-pressure end of resistance R5 and the negative electrode of voltage stabilizing didoe D9.The high-pressure side of resistance R5 is connected with pressure-wire V+; Resistance R5 is the load resistance of triode T11 collector electrode, and the change in voltage of this collector electrode controls the curent change of field effect transistor by the field effect transistor grid be connected.
Inductive energy storage recovery circuit is made up of electric capacity C6, diode D4, diode D7; Wherein: one end of electric capacity C6 is connected with pressure-wire V2, the other end of electric capacity C6 is connected with V3 pressure-wire, and V3 pressure-wire is also connected with the negative electrode of diode D4, the anode of diode D7; The anode of diode D4 is connected with ground wire, and the negative electrode of diode D7 is connected with pressure-wire V4.
Output constant current electrical route resistance R13, electric capacity C14 and electric capacity C15 form; Wherein: the high-pressure side of resistance R13, the high-pressure side of electric capacity C14 are connected with pressure-wire V4; The low-pressure end of resistance R13 is connected with output OUT pressure-wire with the low-pressure end of electric capacity C14, and output OUT is also connected with the high-pressure side of electric capacity C15, the low-pressure end ground connection of electric capacity C15.Can external load such as LED lamp D16 between output OUT and ground wire.
The present embodiment circuit is the simplest, and current regulation can reach one thousandth and often lie prostrate, to requiring that not too high occasion can meet the demands.
Embodiment 2: the circuit load of field effect transistor grid is the efficient high current regulation Unisolated switch power supply of constant-current source
As shown in Figure 2, load resistance R5 in field effect transistor F8 grid circuit more can replace to the constant-current source circuit be made up of resistance R17, voltage stabilizing didoe D18, triode T19 and resistance R20, wherein the collector electrode of triode T19 is connected to V1 pressure-wire, its emitter is connected on the output voltage wire V+ of rectification circuit by resistance R17, its base stage leads up to resistance R20 ground connection GND, and this base stage is separately leaded up to the anode of voltage stabilizing didoe D17 and arrived its negative electrode and be connected on the output voltage wire V+ of rectification circuit.Improve this electric power outputting current regulation like this.
The present embodiment circuit is more complicated, but current regulation is very high, can reach 5/100000ths and often lie prostrate, and can meet the demands higher occasion.
Embodiment 3: rectifier bridge stack one input arm is provided with the efficient high current regulation Unisolated switch power supply of electric capacity
As shown in Figure 3, not only the resistance R5 be connected with output voltage wire V+ in field effect transistor F8 grid circuit is replaced to the constant-current source be made up of resistance R17, voltage stabilizing didoe D18, triode T19 and resistance R20, and bridge heap Br1 an input arm be connected in series the electric capacity C21 that input voltage piled by a reduction bridge between 220 volts of civil powers.So not only can improve this electric power outputting current regulation and reach 5/100000ths, this electric power output voltage is also made to be easy to be reduced to very low, even output short-circuit also can not damaged circuit, to meet technical requirement is high and supply power voltage is lower load as the requirement of light fixture etc.
Claims (3)
1. an efficient high current regulation Unisolated switch power supply, is characterized in that: include current rectifying and wave filtering circuit, switching power circuit, inductive energy storage recovery circuit and export constant current circuit; Wherein:
Current rectifying and wave filtering circuit is made up of rectifier bridge stack Br1 and electric capacity C2; Wherein, two inputs of rectifier bridge stack Br1 connect 220 volts of electric mains, and there are one end ground connection GND and other end output voltage V+ in its two ends exported, and between this output voltage wire V+ and ground wire, tipping has the electric capacity C2 of filtering, constitutes described current rectifying and wave filtering circuit;
Switching power circuit, is made up of inductance L 3, resistance R5, field effect transistor F8, voltage stabilizing didoe D9, electric capacity C10, triode T11, resistance R12, resistance R13, electric capacity C14; Wherein: one end of inductance L 3 is connected with V+ pressure-wire, and its other end is connected with pressure-wire V2, what be connected with pressure-wire V2 also has one end of electric capacity C10, the drain electrode of field effect transistor F8; The source electrode of field effect transistor F8 is connected with pressure-wire V4, and pressure-wire V4 is also connected with the anode of voltage stabilizing didoe D9, one end of resistance R12; The other end of electric capacity C10 is connected with the other end of the base stage of triode T11 and resistance R12; The emitter of triode T11 connects output OUT pressure-wire; The grid of field effect transistor F8 connects pressure-wire V1, and pressure-wire V1 is also connected with the low-pressure end of resistance R5 and the negative electrode of voltage stabilizing didoe D9, and the high-pressure side of resistance R5 is connected with pressure-wire V+; Resistance R5 is the load resistance of triode T11 collector electrode, and the change in voltage of this collector electrode controls the curent change of field effect transistor by the field effect transistor grid be connected;
Inductive energy storage recovery circuit is made up of electric capacity C6, diode D4, diode D7; Wherein: one end of electric capacity C6 is connected with pressure-wire V2, the other end of electric capacity C6 is connected with V3 pressure-wire, V3 pressure-wire is also connected with the negative electrode of diode D4, the anode of diode D7, and the anode of diode D4 is connected with ground wire, and the negative electrode of diode D7 is connected with pressure-wire V4;
Output constant current electrical route resistance R13, electric capacity C14 and electric capacity C15 form, wherein: the high-pressure side of resistance R13, the high-pressure side of electric capacity C14 are connected with pressure-wire V4, the low-pressure end of resistance R13 is connected with output OUT pressure-wire with the low-pressure end of electric capacity C14, output OUT is also connected with the high-pressure side of electric capacity C15, the low-pressure end ground connection GND of electric capacity C15.
2. according to efficient high current regulation Unisolated switch power supply according to claim 1, it is characterized in that: the load resistance R5 in described field effect transistor F8 grid circuit more can replace to by resistance R17, voltage stabilizing didoe D18, the constant-current source circuit that triode T19 and resistance R20 forms, wherein the collector electrode of triode T19 is connected to V1 pressure-wire, its emitter is connected on the output voltage wire V+ of rectification circuit by resistance R17, its base stage leads up to resistance R20 ground connection GND, this base stage is separately leaded up to the anode of voltage stabilizing didoe D17 and is arrived its negative electrode and be connected on the output voltage wire V+ of rectification circuit.
3. according to efficient high current regulation Unisolated switch power supply according to claim 2, it is characterized in that: also can be connected in series the electric capacity C21 that input voltage piled by a reduction bridge between of a Qi Qiaodui Br1 input arm with 220 volts of civil powers, so not only can improve this electric power outputting current regulation, also make this electric power output voltage be easy to be reduced to very low, even output short-circuit also can not damaged circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610089421.5A CN105515416A (en) | 2016-01-11 | 2016-02-18 | Efficient high-current-adjustment-rate non-isolated switch power source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610012301.5A CN105471293A (en) | 2016-01-11 | 2016-01-11 | Non-isolating switching power supply with high efficiency and high current regulation ratio |
| CN2016100123015 | 2016-01-11 | ||
| CN201610089421.5A CN105515416A (en) | 2016-01-11 | 2016-02-18 | Efficient high-current-adjustment-rate non-isolated switch power source |
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| CN105515416A true CN105515416A (en) | 2016-04-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111332143A (en) * | 2018-12-18 | 2020-06-26 | 李尔公司 | Variable Zero Voltage Switching (ZVS) hybrid controller for Power Factor Corrector (PFC) |
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2016
- 2016-01-11 CN CN201610012301.5A patent/CN105471293A/en active Pending
- 2016-02-18 CN CN201610089421.5A patent/CN105515416A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111332143A (en) * | 2018-12-18 | 2020-06-26 | 李尔公司 | Variable Zero Voltage Switching (ZVS) hybrid controller for Power Factor Corrector (PFC) |
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Application publication date: 20160420 |