CN206135714U - Circuit for improving stability of mobile phone power supply - Google Patents
Circuit for improving stability of mobile phone power supply Download PDFInfo
- Publication number
- CN206135714U CN206135714U CN201621149391.4U CN201621149391U CN206135714U CN 206135714 U CN206135714 U CN 206135714U CN 201621149391 U CN201621149391 U CN 201621149391U CN 206135714 U CN206135714 U CN 206135714U
- Authority
- CN
- China
- Prior art keywords
- power
- circuit
- power supply
- unit
- control chip
- 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
Links
- 239000013078 crystal Substances 0.000 claims description 12
- 230000001413 cellular effect Effects 0.000 claims description 9
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000004247 hand Anatomy 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
Landscapes
- Telephone Function (AREA)
- Dc-Dc Converters (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a circuit for improving stability of mobile phone power supply, stabilize the unit including power control chip, power battery charging unit, power output unit and power, power control chip's input is connected with clock circuit and reset circuit, power control chip is connected with power battery charging unit, power battery charging unit's output and power output unit input signal connection, power control chip stabilizes the unit with the power and is connected, the output and power output unit input signal connection of unit are stabilized to the power. This circuit for improving stability of mobile phone power supply adopts a switching power supply circuit, and the battery voltage who has solved some smart mobile phones is lower, and circuit needs the problem that higher operating voltage and battery voltage can reduce gradually along with the extension of power consumption time a bit to provide voltage stable and that meet the requirements for each circuit of cell -phone.
Description
Technical field
This utility model is related to circuit field, specially a kind of circuit for improving cellular phone power supplies stability.
Background technology
As cell-phone function is more and more, increasingly stronger, then also can more and more higher to the reliability requirement of mobile phone.Intelligence
The cell voltage of mobile phone is relatively low, and some circuits then need higher running voltage.In addition, cell voltage is with the electricity consumption time
Prolongation can be gradually lowered, and in order to give each circuit with stable of mobile phone and satisfactory voltage, becoming compare in prior art spine
The problem of handss.
Utility model content
The purpose of this utility model is to provide a kind of circuit for improving cellular phone power supplies stability, to solve above-mentioned background skill
The problem proposed in art.
For achieving the above object, this utility model provides following technical scheme：
A kind of circuit for improving cellular phone power supplies stability, including power supply control chip, power source charges unit, power supply output list
Unit and power good unit, the input of the power supply control chip is connected with clock circuit and reset circuit, the power supply control
Coremaking piece is connected with power source charges unit, and mutually transmits signal, and the outfan of the power source charges unit is defeated with power supply
Go out the connection of unit input end signal, the power supply control chip is connected with power good unit, and mutually transmits signal, institute
The outfan for stating power good unit is connected with power output unit input end signal, the power good unit switch voltage stabilizing electricity
Source circuit, the Type of Switch Stabilivolt Source Circuit includes power regulator, boost inductance L1, boost inductance L2 and boost inductance L3,
Power regulator switch control terminal EN is connected with power supply control chip P1 end signals, one end of boost inductance L1 and power regulator
Feedback end FB connects, and the other end is connected to the ground by discharge capacity C1, boost inductance L2 one end and power regulator input VIN
Connection, the other end is external in supplying cell input VBAT (3.7V), and the circuit of power regulator input VIN and inductance L2
Between be connected to the ground by discharge capacity C1 with a wire, one end of boost inductance L3 is connected to the ground by discharge capacity C3, separately
One end is connected respectively with power regulator feedback end FB and outfan VOUT, and is provided with continuous in the circuit being connected with outfan VOUT
Stream diode FWD, fly-wheel diode FWD the right and lefts are respectively equipped with K points and A points, and discharge capacity C2 is passed through with a wire at A points
It is connected to the ground.
Preferably, the power regulator adopts the power regulator of model LM2575T-5.0.
Preferably, the clock circuit includes crystal oscillator B1440, one end of pin 1 of crystal oscillator B1440 by resonant capacitance C5 with
Ground is connected, and the other end be connected with the feedback end FB of power regulator, one end of pin 3 of crystal oscillator B1440 pass through resonant capacitance C6 and
Ground is connected, and the other end is connected with the outfan VOUT of power regulator, and the pin 2 and pin 4 of crystal oscillator B1440 is by wire and ground
It is connected.
Compared with prior art, the beneficial effects of the utility model are：The circuit of the raising cellular phone power supplies stability, adopts
A kind of Type of Switch Stabilivolt Source Circuit, when the cell voltage of the smart mobile phone for solving is relatively low, some circuits need higher work
Make voltage, and the problem that cell voltage can be gradually lowered with the prolongation of electricity consumption time, so as to provide steady to each circuit of mobile phone
Fixed and satisfactory voltage.
Description of the drawings
Fig. 1 is this utility model structural representation；
Fig. 2 is this utility model circuit theory schematic diagram.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of this utility model protection.
Fig. 1-2 is referred to, this utility model provides a kind of technical scheme：
A kind of circuit for improving cellular phone power supplies stability, including power supply control chip, power source charges unit, power supply output list
Unit and power good unit, the power supply control chip input is connected with clock circuit and reset circuit, and clock circuit includes
One end of pin 1 of crystal oscillator B1440, crystal oscillator B1440 is connected to the ground by resonant capacitance C5, the feedback of the other end and power regulator
End FB connections, one end of pin 3 of crystal oscillator B1440 is connected to the ground by resonant capacitance C6, the output of the other end and power regulator
End VOUT connections, the pin 2 and pin 4 of crystal oscillator B1440 are connected to the ground by wire, and clock circuit is responsible for producing needed for start
32.768kHz clock signals, reset signal of the reset circuit for needed for PM8058 power supply control chips provide start, the power supply
Control chip is connected with power source charges unit, and mutually transmits signal, the outfan and power supply of the power source charges unit
Output unit input end signal connects, and the power supply control chip is connected with power good unit, and mutually transmits signal,
The outfan of the power good unit is connected with power output unit input end signal.
The model PM8058 chip of power supply control chip, is the core of power supply stability circuit, is responsible for whole circuit
Control, power source charges unit includes charge controlling chip and battery, and charge controlling chip model AP5056 chip, mainly
It is responsible for being charged battery, and the magnitude of voltage that real-time detection charges, AP5056 charge controlling chips are used to protect the electricity of battery
Road, can protect battery over-discharge, overvoltage, overcharge, excess temperature, can effectively protect the safety of battery life and user, electricity
Source output unit is specially power output circuit, the supply voltage needed for responsible other element circuits of output mobile phone.
Power good unit is specially Type of Switch Stabilivolt Source Circuit, and the Type of Switch Stabilivolt Source Circuit includes power supply voltage stabilizing
Device, boost inductance L1, boost inductance L2 and boost inductance L3, power regulator switch control terminal EN and power supply control chip P1 ends
Signal connects, and one end of boost inductance L1 is connected with power regulator feedback end FB, and the other end is by discharge capacity C1 and ground phase
Even, boost inductance L2 one end is connected with power regulator input VIN, and the other end is external in supplying cell input VBAT
(3.7V), and between the circuit of power regulator input VIN and inductance L2 it is connected to the ground by discharge capacity C1 with a wire,
One end of boost inductance L3 is connected to the ground by discharge capacity C3, the other end respectively with power regulator feedback end FB and outfan
VOUT connects, and fly-wheel diode FWD is provided with the circuit being connected with outfan VOUT, fly-wheel diode FWD the right and lefts point
K points and A points are not provided with, are connected to the ground by discharge capacity C2 with a wire at A points.
Utility model works flow process：Operationally, work of the LM2575T-5.0 power regulators in switching power supply
With just as a senior switch, switching " closing " can be with the voltage levels for being input into and confessing with the length of "off" time
Automatically change, confess voltage and uprise, the time of " closing " just becomes shorter, otherwise then contrary.By the width for adjusting pulse,
The time of " closing " can change.When input voltage step-down, the cycle of pulse also can be automatically elongated, while " closing "
Time is automatically elongated, and along with the effect of L3 self induction electromotive forces, making the voltage of output will not decline.It is exactly frequency drop that cycle is elongated
It is low, substantially have adjusted the frequency of pulse, the cycle is constant, switch close the time it is elongated or shorten turn-off time can make it is defeated
The average voltage for going out is uprised, or makes the time that adjacent pulse arrives shorten, and the average voltage of output can also uprised.
With the use of battery, when the 3.7V voltage step-downs of battery of mobile phone, the voltage step-down of power circuit input,
LM2575T-5.0 power regulators can detect input terminal voltage step-down, can now adjust the length in the cycle of internal pulses, make
Pulse period is elongated, makes the voltage that power circuit is exported keep 5V constant.When input voltage VBAT (3.7V) step-down,
The ON time of error ratio amplifying circuit control " senior switch " inside LM2575T-5.0 power regulators is elongated, so, rises
The time that electric current is flow through in voltage inductance L3 is elongated, and electric current is increasing, and the energy of storage is also more and more, the electricity of boost inductance L3
When being abruptly cut, boost inductance L3 produces left positive right negative induced voltage to stream, and the voltage for making filter capacitor C3 ends is 5V, is reached
The effect of voltage stabilizing has been arrived, on the contrary it is then contrary.Fly-wheel diode FWD provides a discharge path after switching off for circuit, makes
Electric current becomes continuous, and electric current can only flow to K points from A points.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out various changes in the case of without departing from principle of the present utility model and spirit, repaiies
Change, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.
Claims (3)
1. a kind of circuit for improving cellular phone power supplies stability, including power supply control chip, power source charges unit, power output unit
With power good unit, it is characterised in that：The power supply control chip input is connected with clock circuit and reset circuit, described
Power supply control chip is connected with power source charges unit, and mutually transmits signal, the outfan of the power source charges unit with
Power output unit input end signal connects, and the power supply control chip is connected with power good unit, and mutually transmits
Signal, the outfan of the power good unit is connected with power output unit input end signal, and the power good unit is
Type of Switch Stabilivolt Source Circuit, the Type of Switch Stabilivolt Source Circuit includes power regulator, boost inductance L1, boost inductance L2 and liter
Voltage inductance L3, power regulator switch control terminal EN are connected with power supply control chip P1 end signals, one end of boost inductance L1 with
Power regulator feedback end FB connects, and the other end is connected to the ground by discharge capacity C1, boost inductance L2 one end and power supply voltage stabilizing
Device input VIN connects, and the other end is external in supplying cell input VBAT (3.7V), and power regulator input VIN and
It is connected to the ground by discharge capacity C1 with a wire between the circuit of inductance L2, one end of boost inductance L3 passes through discharge capacity C3
It is connected to the ground, the other end is connected respectively with power regulator feedback end FB and outfan VOUT, and be connected with outfan VOUT
Fly-wheel diode FWD is provided with circuit, fly-wheel diode FWD the right and lefts are respectively equipped with K points and A points, it is logical with a wire at A points
Overdischarge electric capacity C2 is connected to the ground.
2. it is according to claim 1 it is a kind of improve cellular phone power supplies stability circuit, it is characterised in that：The power supply voltage stabilizing
Device adopts the power regulator of model LM2575T-5.0.
3. it is according to claim 1 it is a kind of improve cellular phone power supplies stability circuit, it is characterised in that：The clock circuit
Including crystal oscillator B1440, one end of pin 1 of crystal oscillator B1440 is connected to the ground by resonant capacitance C5, the other end and power regulator
Feedback end FB connects, and one end of pin 3 of crystal oscillator B1440 is connected to the ground by resonant capacitance C6, the other end and power regulator
Outfan VOUT connects, and the pin 2 and pin 4 of crystal oscillator B1440 are connected to the ground by wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621149391.4U CN206135714U (en) | 2016-10-23 | 2016-10-23 | Circuit for improving stability of mobile phone power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621149391.4U CN206135714U (en) | 2016-10-23 | 2016-10-23 | Circuit for improving stability of mobile phone power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206135714U true CN206135714U (en) | 2017-04-26 |
Family
ID=58575615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621149391.4U Expired - Fee Related CN206135714U (en) | 2016-10-23 | 2016-10-23 | Circuit for improving stability of mobile phone power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206135714U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109617382A (en) * | 2019-01-28 | 2019-04-12 | 宁波公牛数码科技有限公司 | A kind of segmentation power-supply circuit and driving method, circuit system |
| CN116016022A (en) * | 2022-12-28 | 2023-04-25 | 广州众诺电子技术有限公司 | Communication module and master-slave communication device |
-
2016
- 2016-10-23 CN CN201621149391.4U patent/CN206135714U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109617382A (en) * | 2019-01-28 | 2019-04-12 | 宁波公牛数码科技有限公司 | A kind of segmentation power-supply circuit and driving method, circuit system |
| CN109617382B (en) * | 2019-01-28 | 2024-05-10 | 宁波公牛数码科技有限公司 | Segmented power-taking circuit, driving method and circuit system |
| CN116016022A (en) * | 2022-12-28 | 2023-04-25 | 广州众诺电子技术有限公司 | Communication module and master-slave communication device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103066666B (en) | A kind of booster type battery charging management system and control method thereof | |
| CN103607009B (en) | A kind of charge-discharge circuit with automatic protection functions | |
| CN203056660U (en) | An electric vehicle smart charger | |
| CN203225573U (en) | Power-storing LED driver employing switching MOS tube and DC-DC module capable of multiplexing | |
| CN105099184B (en) | A kind of underload switch power supply chip | |
| CN103378636A (en) | Mobile power source control chip and mobile power source with same | |
| CN107872101A (en) | A kind of NFC antenna electricity getting device | |
| US9876384B2 (en) | Charging device and charging method | |
| CN105337502B (en) | Low-power consumption circuit energy acquisition circuit | |
| CN102195326B (en) | Charge control method of small power battery | |
| CN104092271A (en) | Intelligent lithium battery charger | |
| CN206135714U (en) | Circuit for improving stability of mobile phone power supply | |
| CN202084961U (en) | A charging control circuit for a low-power storage battery | |
| CN202334336U (en) | Active electronic type transformer power supply | |
| CN203574435U (en) | Charger control circuit | |
| CN103683414A (en) | Ultra-mobile power supply | |
| CN203690966U (en) | Super portable power bank | |
| CN203883674U (en) | Light-load switching power supply chip | |
| US20170040816A1 (en) | Power supply circuit and power supply method | |
| CN203423622U (en) | Vehicle-mounted mobile phone wireless charger voltage-stabilized power supply | |
| CN206442169U (en) | Portable type solar recharging knapsack | |
| CN208806636U (en) | A kind of cellular phone power supplies circuit | |
| CN204333985U (en) | A kind of high-power charger with auto-breaking defencive function | |
| CN208904890U (en) | A kind of superconducting magnet circuit | |
| CN203326664U (en) | Mobile power supply control chip and mobile power supply using the same |
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: 20170426 Termination date: 20181023 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |