CN110837220A - Novel clock chip power supply circuit - Google Patents
Novel clock chip power supply circuit Download PDFInfo
- Publication number
- CN110837220A CN110837220A CN201911305279.3A CN201911305279A CN110837220A CN 110837220 A CN110837220 A CN 110837220A CN 201911305279 A CN201911305279 A CN 201911305279A CN 110837220 A CN110837220 A CN 110837220A
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- CN
- China
- Prior art keywords
- power supply
- diode
- supply part
- auxiliary power
- clock
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Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
- G04G19/10—Arrangements for supplying back-up power
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Abstract
The invention relates to the technical field of chip working circuits, in particular to a novel clock chip power supply circuit, which comprises a main power supply part, a clock circuit part, a first auxiliary power supply part and a second auxiliary power supply part, wherein the main power supply part is connected with the clock circuit part and the first auxiliary power supply part through leads, the second auxiliary power supply part is connected with the clock circuit part through leads, the main power supply part comprises a +5V power supply, a diode D1 and a diode D2, the clock circuit part comprises a clock chip, a resistor R1, a resistor R2, a crystal oscillator X1 and a bias capacitor C2, the clock chip comprises a U1.Vcc, a U1.X1, a U1.SDA X2, a U1.SCL and a U1.X, the first auxiliary power supply part comprises a diode D4 and a low-voltage large-capacity capacitor C1, and the second auxiliary power supply part comprises a diode D3 and a button battery B1; a low-voltage high-capacity capacitor is added in the circuit, and the button battery is matched with the low-voltage high-capacity capacitor to cooperatively supply power to the clock chip, so that the service life of the button battery is prolonged.
Description
Technical Field
The invention relates to the technical field of chip working circuits, in particular to a novel clock chip power supply circuit.
Background
With the development of economy and industry, many electronic products have the display function of the calendar and the time, and the calendar and the time can be automatically updated under the condition that a power supply is cut off, most clock chips supply power to the clock chips through the 3V lithium iron button battery after the main power supply is cut off, but the 3V lithium iron button battery cannot be charged, and the total amount of time cannot be increased due to the influence of the volume of the 3V lithium iron button battery, so that the 3V lithium iron button battery cannot provide enough voltage for the clock chips to use after the clock chips are used for a period of time (2 to 3 years), the calendar and the time cannot be updated in time, and the calendar and the time are displayed inaccurately.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a novel clock chip power supply circuit, wherein a low-voltage high-capacity capacitor is added in the circuit, and a button battery is matched with the low-voltage high-capacity capacitor to cooperatively supply power to a clock chip, so that the service life of the button battery is prolonged.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a novel clock chip power supply circuit comprises a main power supply component, a clock circuit component, a first auxiliary power supply component and a second auxiliary power supply component, wherein the main power supply component is connected with the clock circuit component and the first auxiliary power supply component through leads, the second auxiliary power supply component is connected with the clock circuit component through leads, the main power supply component comprises a +5V power supply, a diode D1 and a diode D2, the clock circuit component comprises a clock chip, a resistor R1, a resistor R2, a crystal oscillator X1 and a bias capacitor C2, the clock chip comprises U1.Vcc, U1.X1, U1.X2, U1.SCL and U1.SDA, the first auxiliary power supply component comprises a diode D4 and a low-voltage large-capacity capacitor C1, and the second auxiliary power supply component comprises a diode D3 and a button cell B1; the +5V power passes through diode D1 and is connected with low pressure large capacity electric capacity C1's positive terminal, the +5V power passes through diode D2 and is connected with U1.Vcc, low pressure large capacity electric capacity C1 passes through diode D4 and is connected with U1.Vcc, button cell B1 passes through diode D3 and is connected with U1.Vcc.
Further, the u1.x1 is connected to one end of the crystal oscillator X1 and one end of the bias capacitor C2, the u1.x2 is connected to the other end of the crystal oscillator X1, and the other end of the bias capacitor C2 is connected to the ground.
Further, a port of the u1.scl is connected to one end of a resistor R2, the other end of the resistor R2 is connected to a +5V power supply, a port of the u1.sda is connected to one end of a resistor R1, and the other end of the resistor R1 is connected to a +5V power supply.
Due to the adoption of the technical scheme, the invention has the following advantages:
when the clock circuit is normally powered on and works, the clock circuit is powered by the main power supply part, the main power supply part can instantly charge the first auxiliary power supply part, after the main power supply part is powered off, the voltage of the first auxiliary power supply part is greater than that of the second auxiliary power supply part, the first auxiliary power supply part directly supplies power to the clock circuit, and the first auxiliary power supply part can independently supply power to the clock circuit for a long time (3 days) because the capacitance capacitor is made of low leakage rate and the power consumption of the clock circuit is very low; in summary, if the main power supply part is often used to power on the clock circuit, the second auxiliary power supply part is in a standby state for a great time, so that the electric quantity of the button battery can be maintained in a sufficient state for a long time.
Drawings
FIG. 1 is a schematic structural view of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a novel clock chip power supply circuit includes a main power supply component, a clock circuit component, a first auxiliary power supply component and a second auxiliary power supply component, the main power supply component is connected with the clock circuit component and the first auxiliary power supply component through a lead, the second auxiliary power supply component is connected with the clock circuit component through a lead, the main power supply component includes a +5V power supply, a diode D1 and a diode D2, the clock circuit component includes a clock chip, a resistor R1, a resistor R2, a crystal oscillator X1 and a bias capacitor C2, the clock chip includes u1.vcc, u1.x1, u1.x2, u1.scl and u1.sda, the first auxiliary power supply component includes a diode D4 and a low-voltage large-capacity capacitor C1, and the second auxiliary power supply component includes a diode D3 and a button cell B1; the +5V power supply is connected with the positive end of a low-voltage large-capacity capacitor C1 through a diode D1, the +5V power supply is connected with the U1.Vcc through a diode D2, the low-voltage large-capacity capacitor C1 is connected with the U1.Vcc through a diode D4, and the button cell B1 is connected with the U1.Vcc through a diode D3.
The U1.X1 is connected with one end of a crystal oscillator X1 and a bias capacitor C2, the U1.X2 is connected with the other end of the crystal oscillator X1, and the other end of the bias capacitor C2 is connected with the ground wire.
The port of the u1.scl is connected to one end of a resistor R2, the other end of the resistor R2 is connected to the +5V power supply, the port of the u1.sda is connected to one end of a resistor R1, and the other end of the resistor R1 is connected to the +5V power supply.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (3)
1. The novel clock chip power supply circuit is characterized by comprising a main power supply part, a clock circuit part, a first auxiliary power supply part and a second auxiliary power supply part, wherein the main power supply part is connected with the clock circuit part and the first auxiliary power supply part through leads, the second auxiliary power supply part is connected with the clock circuit part through leads, the main power supply part comprises a +5V power supply, a diode D1 and a diode D2, the clock circuit part comprises a clock chip, a resistor R1, a resistor R2, a crystal oscillator X1 and a bias capacitor C2, the clock chip comprises U1.Vcc, U1.X1, U1.X2, U1.SCL and U1.SDA, the first auxiliary power supply part comprises a diode D4 and a low-voltage large-capacity capacitor C1, and the second auxiliary power supply part comprises a diode D3 and a button battery B1; the +5V power passes through diode D1 and is connected with low pressure large capacity electric capacity C1's positive terminal, the +5V power passes through diode D2 and is connected with U1.Vcc, low pressure large capacity electric capacity C1 passes through diode D4 and is connected with U1.Vcc, button cell B1 passes through diode D3 and is connected with U1.Vcc.
2. The novel clock chip power supply circuit of claim 1, wherein the u1.X1 is connected to one end of a crystal oscillator X1 and a bias capacitor C2, the u1.X2 is connected to the other end of the crystal oscillator X1, and the other end of the bias capacitor C2 is connected to ground.
3. The novel clock chip power supply circuit of claim 1, wherein the port of the u1.scl is connected to one end of a resistor R2, the other end of the resistor R2 is connected to a +5V power supply, the port of the u1.sda is connected to one end of a resistor R1, and the other end of the resistor R1 is connected to a +5V power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911305279.3A CN110837220A (en) | 2019-12-18 | 2019-12-18 | Novel clock chip power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911305279.3A CN110837220A (en) | 2019-12-18 | 2019-12-18 | Novel clock chip power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110837220A true CN110837220A (en) | 2020-02-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911305279.3A Pending CN110837220A (en) | 2019-12-18 | 2019-12-18 | Novel clock chip power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110837220A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112034974A (en) * | 2020-08-22 | 2020-12-04 | 深圳市海曼科技股份有限公司 | Clock chip power supply switching method, device, terminal and medium |
-
2019
- 2019-12-18 CN CN201911305279.3A patent/CN110837220A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112034974A (en) * | 2020-08-22 | 2020-12-04 | 深圳市海曼科技股份有限公司 | Clock chip power supply switching method, device, terminal and medium |
| CN112034974B (en) * | 2020-08-22 | 2021-12-24 | 深圳市海曼科技股份有限公司 | Clock chip power supply switching method, device, terminal and medium |
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