CN209329963U - A kind of-the 3.3V based on NCP3063~-15V adjustable power circuit - Google Patents
A kind of-the 3.3V based on NCP3063~-15V adjustable power circuit Download PDFInfo
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- CN209329963U CN209329963U CN201920210863.XU CN201920210863U CN209329963U CN 209329963 U CN209329963 U CN 209329963U CN 201920210863 U CN201920210863 U CN 201920210863U CN 209329963 U CN209329963 U CN 209329963U
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Abstract
The utility model relates to a kind of -3.3V based on NCP3063~-15V adjustable power circuits, including resistance R1, resistance R2, resistance R3, potentiometer RV1, ceramic disc capacitor C1, electrolytic capacitor C2, electrolytic capacitor C3, electrolytic capacitor C4, ceramic disc capacitor C5, inductance L1, inductance L2, NCP3063 chip U1, diode D1.The circuit input voltage range+5V~+35V, output voltage is adjustable, and range is -3.3V~-15V.The circuit output is stablized, and output voltage is not by the influence of fluctuations of input voltage, and stability is high, strong antijamming capability, and circuit structure is simple and practical.
Description
Technical field
The utility model relates to a kind of negative pressure output power supply circuits, and in particular to a kind of -3.3V based on NCP3063
~-15V adjustable power circuit, belongs to power technique fields.
Background technique
Existing power supply is mostly the power supply for exporting positive voltage, and rarely the power supply of negative pressure output, exports adjustable negative pressure
Power supply is even more very few, and many power supply out-put supplies are easy the variation by input voltage and fluctuate, and use very not
It is convenient and impracticable.
Utility model content
To solve the above-mentioned problems, the utility model provides a kind of -3.3V based on NCP3063~-15V adjustable electric
Source circuit.The power circuit input voltage range+5V~+35V, output voltage is adjustable, and range is -3.3V~-15V.The electricity
Road output voltage stabilization, not vulnerable to the influence of fluctuations of input voltage.
The specific technical solution that the utility model is taken is as follows:
A kind of-the 3.3V based on NCP3063~-15V adjustable power circuit, it is characterized in that: the power circuit includes electricity
Hinder R1, resistance R2, resistance R3, potentiometer RV1, ceramic disc capacitor C1, electrolytic capacitor C2, electrolytic capacitor C3, electrolytic capacitor C4, tile
Capacitor C5, inductance L1, inductance L2, NCP3063 chip U1, diode D1, in circuit, mono- termination power VCC of resistance R1, the other end
Connect the 1st and 7 pins of NCP3063 chip U1；The 6th pin of U1 meets VCC；Electrolytic capacitor C2 anode meets power supply VCC, and cathode connects
Ground；Resistance R3 mono- terminates the 5th pin of U1, other end ground connection；Resistance R2 mono- terminates the 5th pin of U1, another termination potentiometer
The 1st pin of RV1；Potentiometer RV1 the 2nd, 3 pins are connected and are connected to the 4th pin of U1；Electrolytic capacitor C3 cathode connects the of U1
4 pins, plus earth；Inductance L2 mono- terminates the 4th pin of U1, another termination output port 1；Electrolytic capacitor C4 cathode connects output
Port 1, plus earth；Ceramic disc capacitor C5 is attempted by between output port 1,2；Ceramic disc capacitor C1 is attempted by the 3rd of U1 the, 4 pins
Between；Diode D1 anode connects the 4th pin of U1, and cathode connects the 2nd pin of U1；Inductance L1 mono- terminates the 2nd pin of U1, another
End ground connection.
The R1 resistance value is 0.5 Ω, and R2 resistance value is 240 Ω, and R3 resistance value is 2.7K Ω；Potentiometer RV1 resistance value is 1.5K Ω；
Ceramic disc capacitor C1 capacity is 1nF；Electrolytic capacitor C2 capacity is 100uF；Electrolytic capacitor C3 capacity is 220uF；Electrolytic capacitor C4 holds
Amount is 220uF；Ceramic disc capacitor C5 capacity is 0.1uF；Inductance L1 induction reactance is 100uH；Inductance L2 induction reactance is 33uH；Diode D1 type
Number be IN5822；VCC voltage range is+5V~+35V.
The utility model has the following beneficial effects: the utility model provides a kind of -3.3V based on NCP3063~-15V
Adjustable power circuit, the power circuit input voltage range+5V~+35V, output voltage is adjustable, range be -3.3V~-
15V.The circuit inputs positive voltage, exports negative voltage, output voltage stabilization, output voltage not by the influence of fluctuations of input voltage,
Stability is high, strong antijamming capability.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model.
Fig. 2 is the NCP3063 internal structure block diagram of the utility model.
Specific embodiment
The utility model is described further with reference to the accompanying drawing.
As shown in Figure 1, a kind of -3.3V based on NCP3063~-15V adjustable power circuit, which includes electricity
Hinder R1, resistance R2, resistance R3, potentiometer RV1, ceramic disc capacitor C1, electrolytic capacitor C2, electrolytic capacitor C3, electrolytic capacitor C4, tile
Capacitor C5, inductance L1, inductance L2, NCP3063 chip U1, diode D1, in circuit, mono- termination power VCC of resistance R1, the other end
Connect the 1st and 7 pins of NCP3063 chip U1；The 6th pin of U1 meets VCC；Electrolytic capacitor C2 anode meets power supply VCC, and cathode connects
Ground；Resistance R3 mono- terminates the 5th pin of U1, other end ground connection；Resistance R2 mono- terminates the 5th pin of U1, another termination potentiometer
The 1st pin of RV1；Potentiometer RV1 the 2nd, 3 pins are connected and are connected to the 4th pin of U1；Electrolytic capacitor C3 cathode connects the of U1
4 pins, plus earth；Inductance L2 mono- terminates the 4th pin of U1, another termination output port 1；Electrolytic capacitor C4 cathode connects output
Port 1, plus earth；Ceramic disc capacitor C5 is attempted by between output port 1,2；Ceramic disc capacitor C1 is attempted by the 3rd of U1 the, 4 pins
Between；Diode D1 anode connects the 4th pin of U1, and cathode connects the 2nd pin of U1；Inductance L1 mono- terminates the 2nd pin of U1, another
End ground connection.
The R1 resistance value is 0.5 Ω, and R2 resistance value is 240 Ω, and R3 resistance value is 2.7K Ω；Potentiometer RV1 resistance value is 1.5K Ω；
Ceramic disc capacitor C1 capacity is 1nF；Electrolytic capacitor C2 capacity is 100uF；Electrolytic capacitor C3 capacity is 220uF；Electrolytic capacitor C4 holds
Amount is 220uF；Ceramic disc capacitor C5 capacity is 0.1uF；Inductance L1 induction reactance is 100uH；Inductance L2 induction reactance is 33uH；Diode D1 type
Number be IN5822；VCC voltage range is+5V~+35V.
NCP3063 is a novel a variety of topology knots of ON Semiconductor (ON Semiconductor) newest release
Structure DC/DC controller, it can be achieved that decompression, boosting or reverse phase conversion configurations flexible design.NCP3063 can mention switching frequency
Height can provide the peak anode current of 1.5A to 190 kHz, and more peak value exports electric current and provides high property for the application of more high current
Valence ratio and flexible solution.The new internal heat shutoff of the device tool lag and Cycle by Cycle current limit, these protection function
Can being against any misfortune property failure, such as prevent output on short circuit cause device or load permanent destruction.
As shown in Fig. 2, the 1st pin SWC (Switch Collector) of NCP3063 is the collection of internal Darlington switching tube
Electrode；2nd pin SWE (Switch Emitter) is the emitter of internal Darlington switching tube；3rd pin TCAP (Timing
Capacitor) external timing capacitor, for determining the switching frequency of circuit；4th pin GND is the ground terminal of internal wiring；The
5 pin COMP (Comparator Inverting Input) connect the anti-phase input foot of internal comparator；6th pin VCC is collection
At chip power；7th pin IPK (IPK Sense) is peak current detection input terminal, by detecting external ohmically pressure drop
Realize that the 7th pin NC of limitation of peak point current IPK be hanging pin, it is unused.
After circuit powers on, the 2nd foot SWE of NCP3063 exports PWM wave, and PWM wave and subsequent circuit constitute one typically
Negative pressure circuit, when PWM wave is in high level, the voltage being added on inductance L1 is constant, so the electric current flowed through on inductance is linear
Rise, slope is dI/dT=voltage across the inductor difference/inductance value, this makes inductive current have ladder slope；When PWM wave is in low
When level, since inductive current cannot be mutated, so voltage across the inductor polarity overturns rapidly to keep electric current in inductance constant,
Electric current will be flowed out from capacitor C3 simultaneously flows to inductance L1 after diode D1, since capacitor C3 electric current flows out, both end voltage pressure
Difference increases and forms negative pressure, filters to form stable negative voltage output through L2 and C4.5th foot is the feedback pin of comparator, label
The Voltage Feedback voltage of RV1 changes, and the voltage at the both ends C3 also changes correspondingly, to change output voltage.When RV1 immobilizes
When, fixed voltage is exported, is not changed with the change of input voltage.
The utility model output is stablized, and wide input voltage range, input voltage range reaches+5V~+35V, input voltage
Fluctuation does not influence the stability of output voltage, and stability is high, strong antijamming capability.
Claims (2)
1. a kind of -3.3V based on NCP3063~-15V adjustable power circuit, it is characterized in that: the power circuit includes resistance
R1, resistance R2, resistance R3, potentiometer RV1, ceramic disc capacitor C1, electrolytic capacitor C2, electrolytic capacitor C3, electrolytic capacitor C4, tile electricity
Hold C5, inductance L1, inductance L2, NCP3063 chip U1, diode D1, in circuit, mono- termination power VCC of resistance R1, another termination
The 1st and 7 pins of NCP3063 chip U1；The 6th pin of U1 meets VCC；Electrolytic capacitor C2 anode connects power supply VCC, cathode ground connection；
Resistance R3 mono- terminates the 5th pin of U1, other end ground connection；Resistance R2 mono- terminates the 5th pin of U1, another termination potentiometer RV1
The 1st pin；Potentiometer RV1 the 2nd, 3 pins are connected and are connected to the 4th pin of U1；Electrolytic capacitor C3 cathode connects the 4th of U1 and draws
Foot, plus earth；Inductance L2 mono- terminates the 4th pin of U1, another termination output port 1；Electrolytic capacitor C4 cathode connects output end
Mouth 1, plus earth；Ceramic disc capacitor C5 is attempted by between output port 1,2；Ceramic disc capacitor C1 be attempted by the 3rd of U1 the, 4 pins it
Between；Diode D1 anode connects the 4th pin of U1, and cathode connects the 2nd pin of U1；Inductance L1 mono- terminates the 2nd pin of U1, the other end
Ground connection.
2. a kind of -3.3V based on NCP3063 according to claim 1~-15V adjustable power circuit, it is characterized in that:
The R1 resistance value is 0.5 Ω, and R2 resistance value is 240 Ω, and R3 resistance value is 2.7K Ω；Potentiometer RV1 resistance value is 1.5K Ω；Ceramic disc capacitor
C1 capacity is 1nF；Electrolytic capacitor C2 capacity is 100uF；Electrolytic capacitor C3 capacity is 220uF；Electrolytic capacitor C4 capacity is
220uF；Ceramic disc capacitor C5 capacity is 0.1uF；Inductance L1 induction reactance is 100uH；Inductance L2 induction reactance is 33uH；Diode D1 model
IN5822；VCC voltage range is+5V~+35V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920210863.XU CN209329963U (en) | 2019-02-19 | 2019-02-19 | A kind of-the 3.3V based on NCP3063~-15V adjustable power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920210863.XU CN209329963U (en) | 2019-02-19 | 2019-02-19 | A kind of-the 3.3V based on NCP3063~-15V adjustable power circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209329963U true CN209329963U (en) | 2019-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920210863.XU Expired - Fee Related CN209329963U (en) | 2019-02-19 | 2019-02-19 | A kind of-the 3.3V based on NCP3063~-15V adjustable power circuit |
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| CN (1) | CN209329963U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110535352A (en) * | 2019-09-26 | 2019-12-03 | 四川虹锐电工有限责任公司 | DC-DC power supply circuit is isolated |
-
2019
- 2019-02-19 CN CN201920210863.XU patent/CN209329963U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110535352A (en) * | 2019-09-26 | 2019-12-03 | 四川虹锐电工有限责任公司 | DC-DC power supply circuit is isolated |
| CN110535352B (en) * | 2019-09-26 | 2022-02-08 | 四川虹锐电工有限责任公司 | Isolated DC-DC power supply circuit |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190830 Termination date: 20200219 |
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| CF01 | Termination of patent right due to non-payment of annual fee |