CN206237163U - A kind of voltage-stabilizing output circuit - Google Patents
A kind of voltage-stabilizing output circuit Download PDFInfo
- Publication number
- CN206237163U CN206237163U CN201621306805.XU CN201621306805U CN206237163U CN 206237163 U CN206237163 U CN 206237163U CN 201621306805 U CN201621306805 U CN 201621306805U CN 206237163 U CN206237163 U CN 206237163U
- Authority
- CN
- China
- Prior art keywords
- voltage
- ptc thermistor
- output circuit
- stabilizing output
- regulator
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of voltage-stabilizing output circuit, including PTC thermistor and double voltage-regulator diodes, described pair of voltage-regulator diode is two voltage-regulator diodes of parallel connection, one end of PTC thermistor is electrically connected with a D/C voltage input, and the other end of PTC thermistor is electrically connected by a MCU with a charging inlet, the negative pole of double voltage-regulator diodes is electrically connected with the other end of PTC thermistor, and the positive pole of double voltage-regulator diodes is grounded.Voltage-stabilizing output circuit of the present utility model, by setting the size that double voltage-regulator diodes increased the shunting of integrated circuit, so as to ensure that the stability of circuit in the case where super wide voltage scope is lifted, after increasing this circuit, input voltage range is 5-30V, is substantially applicable most of charger on the market.
Description
Technical field
The utility model belongs to charge protector technical field, more particularly to a kind of voltage-stabilizing output circuit.
Background technology
Existing most of CPU/MCU carries charge management circuit, but input voltage range is narrow, its input voltage range
It is 4.75-6V, it is difficult to be applied to the versatility of current charger on the market, is substantially difficult suitable for most on the market
Charger.
Special voltage stabilizing IC is used in order to lift the voltage range of CPU/MCU charging input ends on the market at present, but
Be input range mostly in 5-12V, special voltage stabilizing IC input ranges are still not wide enough, if while power supply insert when produce
Surge high voltage can produce damage to voltage stabilizing IC.
Utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of low-cost high-efficiency, stabilization
The strong voltage-stabilizing output circuit of property.
The purpose of this utility model is realized using following technical scheme：
A kind of voltage-stabilizing output circuit, including PTC thermistor and double voltage-regulator diodes, described pair of voltage-regulator diode is two
Voltage-regulator diode in parallel, one end of PTC thermistor is electrically connected with a D/C voltage input, and PTC thermistor is another
One end is electrically connected by a MCU with a charging inlet, and the other end of the negative pole of double voltage-regulator diodes with PTC thermistor is electrical
Connection, the positive pole of double voltage-regulator diodes is grounded.
Preferably, the PTC thermistor is NTC pasters.The technology of its selection for further solving PTC thermistor is asked
Topic.
Preferably, the burning voltage of described pair of voltage-regulator diode is 5.6V.It further solves double voltage-regulator diodes
The technical problem of the setting of burning voltage.
Preferably, also including test circuit, the test circuit include ammeter and voltmeter, one end of the voltmeter with
The other end electrical connection of PTC thermistor, the other end ground connection of the voltmeter, the ammeter be installed on MCU and charging inlet it
Between.The technical problem of its test for further solving the output circuit.
Preferably, the model AB1512 of the MCU.The technical problem of its model for further solving MCU.
Compared to existing technology, the beneficial effects of the utility model are：
Voltage-stabilizing output circuit of the present utility model, by set double voltage-regulator diodes increased integrated circuit shunting it is big
It is small, so as to ensure that the stability of circuit in the case where super wide voltage scope is lifted, after increasing this circuit, input voltage range is 5-
30V, is substantially applicable most of charger on the market.
Brief description of the drawings
Fig. 1 is a kind of circuit structure diagram of voltage-stabilizing output circuit of the utility model；
Fig. 2 is the circuit structure diagram of a kind of voltage-stabilizing output circuit of the utility model and test circuit.
Specific embodiment
Below, with reference to accompanying drawing and specific embodiment, the utility model is described further：
As shown in figure 1, a kind of voltage-stabilizing output circuit is present embodiments provided, including two poles are pressed in PTC thermistor and bistable
Pipe, the PTC thermistor is NTC pasters, and PTC expression is PTC thermistor in figure, and described pair of voltage-regulator diode is two
Individual voltage-regulator diode in parallel, what ZD1 and ZD1 was represented is two voltage-regulator diodes, the described pair of burning voltage of voltage-regulator diode
Be 5.6V, one end of the PTC thermistor is electrically connected with a D/C voltage input, and PTC thermistor the other end
Electrically connected with a charging inlet by a MCU, the negative pole of double voltage-regulator diodes electrically connects with the other end of PTC thermistor
Connect, the positive pole of double voltage-regulator diodes is grounded.The present embodiment is exported when input voltage exceedes bistable and presses diodes nominal value
In the range of a safety value, this mu balanced circuit regulated output voltage is in the safe voltage of setting with anti-tamper for limiting voltage
The IC such as CPU and MCU.
The operation principle of the present embodiment：
Firstth, when rated value of the outside input less than or equal to voltage-regulator diode, voltage-regulator diode does not play a role, input
Voltage to IC charging inlets such as CPU and MCU is equal to external input voltage；Secondth, when outside input is more than voltage-regulator diode
During rated value, the voltage at voltage-regulator diode two ends is also increased, and causes the voltage for being input to the IC charging inlets such as CPU/MCU
Increase (hereinafter referred to as load)；Due to zener diode with load be in parallel, as long as zener diode both end voltage has
A little higher than setting voltage stabilizing value, will sharply increase the current value for flowing through voltage-stabiliser tube, so also be increased by the electric current of PTC,
The temperature rising impedance of PTC increases, and (the big PTC pressure drops of electric current are big, and the big PTC temperature of electric current rises high resistant for the dual increase of PTC two ends pressure drop
Anti- increase, pressure drop increase)；So as to offset the rising of voltage-stabiliser tube both end voltage, load voltage is kept to be basically unchanged；If input voltage
Constant, load current increases, and the pressure drop of PTC resistor increases, and causes load voltage to decline, load voltage (voltage-regulator diode two ends
Voltage) as long as declining little by little, the electric current in voltage-stabiliser tube reduces rapidly, reduces the pressure drop on PTC, so as to keep PTC
On pressure drop it is constant, load voltage is obtained a stabilization；
In sum, voltage-regulator diode plays the autoregulation of electric current, and PTC thermistor plays dual (temperature
Rise top adjustment and electric current rise top adjustment) voltage corrective action；
As shown in Fig. 2 the present embodiment also includes test circuit, the test circuit includes ammeter and voltmeter, the voltage
One end of table electrically connects with the other end of PTC thermistor, the other end of voltmeter ground connection, the ammeter be installed on MCU with
Between charging inlet, the model AB1512 of the MCU.The test circuit mainly for detection of the voltage-stabilizing output circuit stabilization
Property.By detecting the state of the state in charging process and charging complete, then it is known that the stabilization of the voltage-stabilizing output circuit
The quality of property.
The tables of data of the state in charging process can be obtained by test, it is as follows：
The tables of data of the state of charging complete can be obtained by test, it is as follows：
Can clearly know that the voltage regulation result of the voltage-stabilizing output circuit of the present embodiment is relatively good by above-mentioned two table.
It will be apparent to those skilled in the art that technical scheme that can be as described above and design, make other various
It is corresponding to change and deformation, and all these change and deformation should all belong to the protection of the utility model claim
Within the scope of.
Claims (5)
1. a kind of voltage-stabilizing output circuit, it is characterised in that including PTC thermistor and double voltage-regulator diodes, the bistable pressure two
Pole pipe is two voltage-regulator diodes of parallel connection, and one end of PTC thermistor is electrically connected with a D/C voltage input, and PTC heat
The other end of quick resistance is electrically connected by a MCU with a charging inlet, the negative pole of double voltage-regulator diodes with PTC thermistor
The other end is electrically connected with, and the positive pole of double voltage-regulator diodes is grounded.
2. voltage-stabilizing output circuit as claimed in claim 1, it is characterised in that the PTC thermistor is NTC pasters.
3. voltage-stabilizing output circuit as claimed in claim 1, it is characterised in that the burning voltage of described pair of voltage-regulator diode is
5.6V。
4. voltage-stabilizing output circuit as claimed in claim 1, it is characterised in that also including test circuit, the test circuit includes
Ammeter and voltmeter, one end of the voltmeter electrically connect with the other end of PTC thermistor, another termination of the voltmeter
Ground, the ammeter is installed between MCU and charging inlet.
5. voltage-stabilizing output circuit as claimed in claim 1, it is characterised in that also including test circuit, the model of the MCU
AB1512。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621306805.XU CN206237163U (en) | 2016-11-30 | 2016-11-30 | A kind of voltage-stabilizing output circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621306805.XU CN206237163U (en) | 2016-11-30 | 2016-11-30 | A kind of voltage-stabilizing output circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206237163U true CN206237163U (en) | 2017-06-09 |
Family
ID=58981295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621306805.XU Expired - Fee Related CN206237163U (en) | 2016-11-30 | 2016-11-30 | A kind of voltage-stabilizing output circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206237163U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108933517A (en) * | 2018-09-06 | 2018-12-04 | 广州金升阳科技有限公司 | The output voltage feed circuit and temperature-compensation circuit of switch converters |
-
2016
- 2016-11-30 CN CN201621306805.XU patent/CN206237163U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108933517A (en) * | 2018-09-06 | 2018-12-04 | 广州金升阳科技有限公司 | The output voltage feed circuit and temperature-compensation circuit of switch converters |
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Legal Events
| 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: 20170609 Termination date: 20211130 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |