CN208623552U - A kind of DC-DC booster circuit - Google Patents
A kind of DC-DC booster circuit Download PDFInfo
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- CN208623552U CN208623552U CN201821246820.9U CN201821246820U CN208623552U CN 208623552 U CN208623552 U CN 208623552U CN 201821246820 U CN201821246820 U CN 201821246820U CN 208623552 U CN208623552 U CN 208623552U
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Abstract
The utility model relates to lamps and lanterns booster circuit technical fields, disclose a kind of DC-DC booster circuit, switch constant-current circuit module including chip U2, the flyback topologies booster circuit module connecting with chip U2 and the metal-oxide-semiconductor connecting with chip U2；It further include the LED light circuit module being connect with chip U2, the model HT45F3430 of chip U2.When the input of broken DC constant pressure, MCU BATOUTENABLE pin exports high level, discharge loop triode ON, battery provide operating voltage to MUC VDD pin, and cell voltage passes through the step-up transformer in flyback topology circuit simultaneously, MUC PWMH pin provides the high-frequency PWM signal that flyback topologies need, it realizes boosting, provides emergency power supply to LED load, by the PWM information for adjusting output different frequency, different Current Voltage output can be obtained, obtain highest working efficiency.
Description
Technical field
The utility model relates to lamps and lanterns emergency circuit technical field, in particular to a kind of DC-DC booster circuit.
Background technique
Emergency light is widely used in various plant areas, the construction of venue and some other open airs, the place speedily carrying out rescue work or rescue, can
It can cause production work that can not be normally carried out because of without effective emergency-lighting set, be brought greatly to people's lives
Inconvenience.With the development of LED lighting technology, in order to guarantee still to be able in city's electrical anomaly to provide illumination to people, LED shines
Bright emergency light is more and more widely used, and the circuit control technology of emergency has become a hot topic of research.Existing emergency is shone
That there are line constructions is unstable for bright lamp tool, and the reliability of circuit is not high, unexpected power-off such as without efficient emergency flight control very
To bringing unexpected danger.
Utility model content
The purpose of this utility model is that a kind of DC-DC booster circuit is provided for the above-mentioned deficiency of the prior art, benefit
High level, discharge loop triode ON are exported with MCU BATOUTENABLE pin, battery provides work to MUC VDD pin
Voltage；Cell voltage passes through the step-up transformer in flyback topology circuit simultaneously, and MUC PWMH pin provides flyback topologies and needs
High-frequency PWM signal, realize boosting, give LED load to provide emergency power supply, and work efficiency is high.
Used technical solution is the utility model in order to achieve the above objectives:
A kind of DC-DC booster circuit, including chip U2, the flyback topologies booster circuit module being connect with chip U2 and with
The metal-oxide-semiconductor of chip U2 connection switchs constant-current circuit module.
Preferably, which further includes the LED light circuit module connecting with chip U2.
Preferably, the flyback topologies booster circuit module includes the resistance R25 connecting with the PWMH pin of chip U2,
The first foot of resistance R25 connects the cathode of the PWMH pin of chip U2, test point TP2 and diode D10, the anode of diode D10
The first foot of connecting resistance R26, the crus secunda of crus secunda connecting resistance R26, the first foot of resistance R31 and the metal-oxide-semiconductor Q2 of resistance R25
Grid, the crus secunda of source electrode connecting resistance R31 of metal-oxide-semiconductor Q2, the first foot of resistance R6, resistance R9 the first foot and resistance
The first foot of R10, the crus secunda of resistance R6 connect the pin PB5 of test point TP10, the first foot of capacitor C5 and chip U2, resistance
The crus secunda of R9 connects the crus secunda of capacitor C5, the crus secunda of resistance R10 and ground connection, and the drain electrode of metal-oxide-semiconductor Q2 connects diode D8's
The pin 3 of anode and step-up transformer L1, the first of the first foot of the 1 connecting resistance R23 of pin of step-up transformer L1, capacitor C15
The anode of foot and power supply, cathode connecting resistance the first foot of R24 of diode D8, the crus secunda of the crus secunda connecting resistance R23 of resistance R24
With the crus secunda of capacitor C15, the pin 6 and pin 8 of step-up transformer L1 is grounded, and the pin 7 of step-up transformer L1 connects two poles
The cathode of pipe D7, the first foot of the positive electrode resistance R27 of diode D7 while the crus secunda of resistance R27 meet VCC, step-up transformer L1
Pin 5 connect the anode of diode D1.
Preferably, metal-oxide-semiconductor switch constant-current circuit module includes driving resistance R21 and metal-oxide-semiconductor Q1, resistance R21's
First foot meets the cathode of the PWML pin of chip U2, test point TP11 and diode D9, the grid connecting resistance R21 of metal-oxide-semiconductor Q1
Crus secunda, the first foot of resistance R28, resistance R20 crus secunda, the first foot of resistance R20 meets the anode of diode D9, MOS
The crus secunda of the source electrode connecting resistance R28 of pipe Q1, the drain electrode of metal-oxide-semiconductor Q1 meet inductance L3.
Preferably, the described metal-oxide-semiconductor switch constant-current circuit module further includes diode D2 and diode D6, diode D2's
The anode of anode and diode D6 connect the drain electrode of the first foot and metal-oxide-semiconductor Q1 of inductance L3, and the crus secunda of inductance L3 connects the negative of LED
Pole, the anode of the first foot of the cathode connecting resistance R1 of the cathode and diode D6 of diode D2, power supply VCC and LED, resistance R1's
Crus secunda connects the first foot and diode of test point TP4, the PA3/OVP pin of chip U2, the first foot of resistance R2, capacitor C7
The cathode of D5, the plus earth of the crus secunda of resistance R2, the crus secunda of capacitor C7 and diode D5.
Preferably, metal-oxide-semiconductor switch constant-current circuit module further includes capacitor C4, and the first foot of capacitor C4 meets chip U2
PA1/OCP pin, test point TP9 and resistance R5 the first foot, the first foot, the resistance of the crus secunda connecting resistance R7 of resistance R5
The first foot of R8 and the source electrode of metal-oxide-semiconductor Q1, the crus secunda ground connection of the crus secunda of capacitor C4, the crus secunda of resistance R7 and resistance R8.
Preferably, the LED light circuit module includes Light-emitting diode LED 1, Light-emitting diode LED 2 and key
The cathode and key switch of the first foot of switch SW1, the positive connecting resistance R30 of Light-emitting diode LED 1, Light-emitting diode LED 2
The crus secunda of the first foot of SW1, the cathode of Light-emitting diode LED 1, the anode of Light-emitting diode LED 2 and key switch SW1 connects
The PC3 pin of chip U2, the first foot of the crus secunda connecting resistance R29 of resistance R30 and the PC2 pin of chip U2, the of resistance R29
Two feet meet VCC.
Preferably, the model HT45F3430 of the chip U2
Preferably, the PA2 pin of the chip U2 meets test point TP3.
Preferably, the VSS pin ground connection of the chip U2.
Compared with prior art, a kind of DC-DC booster circuit provided by the utility model, when the input of broken DC constant pressure,
MCU BATOUTENABLE pin exports high level, discharge loop triode ON, and battery provides work electricity to MUC VDD pin
Pressure；Cell voltage passes through the step-up transformer in flyback topology circuit simultaneously, and MUC PWMH pin provides what flyback topologies needed
High-frequency PWM signal realizes boosting, provides emergency power supply to LED load.Also different frequency can be exported by the software program of design
PWM information, different Current Voltage outputs are obtained, to obtain highest working efficiency.
Above-mentioned is the general introduction of utility model technical solution, below in conjunction with attached drawing and specific embodiment, to the utility model
It is described further.
Detailed description of the invention
Fig. 1 is the electrical block diagram of the present embodiment；
Fig. 2 is the LED light modular circuit schematic diagram of the present embodiment；
Fig. 3 is the circuit control flow diagram of the present embodiment.
Specific embodiment:
In order to which the purpose of this utility model and technical solution and advantage is more clearly understood, make with reference to embodiments detailed
It describes in detail bright.It should be appreciated that specific embodiment described herein is only used to explain the utility model, it is not used to limit this reality
With novel.
Referring to Fig. 1-3, a kind of DC-DC booster circuit provided in this embodiment is connect anti-including chip U2, with chip U2
Swash topology booster circuit module and the metal-oxide-semiconductor connecting with chip U2 switch constant-current circuit module.The DC-DC booster circuit is also wrapped
Include the LED light circuit module connecting with chip U2.Wherein, flyback topologies booster circuit module includes the PWMH with chip U2
The resistance R25 of pin connection, the first foot of resistance R25 connect the negative of the PWMH pin of chip U2, test point TP2 and diode D10
Pole, the first foot of the positive connecting resistance R26 of diode D10, crus secunda, the resistance R31 of the crus secunda connecting resistance R26 of resistance R25
The first foot and metal-oxide-semiconductor Q2 grid, the first foot, the resistance of the crus secunda of the source electrode connecting resistance R31 of metal-oxide-semiconductor Q2, resistance R6
The first foot of R9 and the first foot of resistance R10, the crus secunda of resistance R6 connect the first foot and core of test point TP10, capacitor C5
The pin PB5 of piece U2, the crus secunda of resistance R9 meet the crus secunda of capacitor C5, the crus secunda of resistance R10 and ground connection, metal-oxide-semiconductor Q2
Drain electrode connect the anode of diode D8 and the pin 3 of step-up transformer L1, the of the 1 connecting resistance R23 of pin of step-up transformer L1
One foot, the first foot of capacitor C15 and the anode of power supply, cathode connecting resistance the first foot of R24 of diode D8, the second of resistance R24
The crus secunda of foot connecting resistance R23 and the crus secunda of capacitor C15, the pin 6 and pin 8 of step-up transformer L1 are grounded, and boosting becomes
The pin 7 of depressor L1 connects the cathode of diode D7, the first foot of the positive electrode resistance R27 of diode D7 simultaneously resistance R27 second
Foot meets VCC, and the pin 5 of step-up transformer L1 connects the anode of diode D1.The model HT45F3430 of chip U2；Chip U2's
PA2 pin meets test point TP3；The VSS pin of chip U2 is grounded.
It is preferred that metal-oxide-semiconductor switch constant-current circuit module includes driving resistance R21 and metal-oxide-semiconductor Q1, the first foot of resistance R21 is connect
The cathode of the PWML pin of chip U2, test point TP11 and diode D9, the crus secunda of the grid connecting resistance R21 of metal-oxide-semiconductor Q1,
The crus secunda of the first foot of resistance R28, resistance R20, the first foot of resistance R20 connect the anode of diode D9, the source electrode of metal-oxide-semiconductor Q1
The crus secunda of connecting resistance R28, the drain electrode of metal-oxide-semiconductor Q1 meet inductance L3.Metal-oxide-semiconductor switch constant-current circuit module further include diode D2 and
The anode of diode D6, diode D2 and the anode of diode D6 meet the drain electrode of the first foot and metal-oxide-semiconductor Q1 of inductance L3, inductance L3
Crus secunda connect the cathode of LED, the first foot of the cathode connecting resistance R1 of the cathode and diode D6 of diode D2, power supply VCC and
The anode of LED, the crus secunda of resistance R1 connect test point TP4, the PA3/OVP pin of chip U2, the first foot of resistance R2, capacitor C7
The first foot and diode D5 cathode, the plus earth of the crus secunda of resistance R2, the crus secunda of capacitor C7 and diode D5.
It further includes capacitor C4 that metal-oxide-semiconductor, which switchs constant-current circuit module, and the first foot of capacitor C4 connects the PA1/OCP pin of chip U2, test point
The first foot of TP9 and resistance R5, the first foot of crus secunda connecting resistance R7, the first foot of resistance R8 and the metal-oxide-semiconductor Q1 of resistance R5
Source electrode, the crus secunda of capacitor C4, the crus secunda of resistance R7 and resistance R8 crus secunda ground connection.
It is preferred that LED light circuit module includes Light-emitting diode LED 1, Light-emitting diode LED 2 and key switch SW1,
The first of the first foot of positive connecting resistance R30 of Light-emitting diode LED 1, the cathode of Light-emitting diode LED 2 and key switch SW1
The crus secunda of foot, the cathode of Light-emitting diode LED 1, the anode of Light-emitting diode LED 2 and key switch SW1 connects chip U2's
PC3 pin, the first foot of the crus secunda connecting resistance R29 of resistance R30 and the PC2 pin of chip U2, the crus secunda of resistance R29 connect
VCC。
The working principle of booster circuit in the present embodiment are as follows: when the input of broken DC constant pressure, MCU BATOUTENABLE
Pin (i.e. the PB6 pin of chip U2) exports high level, discharge loop triode ON, and battery provides work to MUC VDD pin
Make voltage；Cell voltage passes through the step-up transformer in flyback topology circuit simultaneously, and MUC PWMH pin provides flyback topologies and needs
The high-frequency PWM signal wanted realizes boosting, provides emergency power supply to LED load.It can also be adjusted by the software program of design defeated
The PWM information of different frequency out obtains different Current Voltage output, to obtain highest working efficiency.
DC-DC booster circuit in the present embodiment is tested, obtains following data:
According to the disclosure and teachings of the above specification, the utility model those skilled in the art can also be to above-mentioned reality
The mode of applying is changed and is modified.Therefore, the utility model is not limited to specific embodiment disclosed and described above, right
Some modifications and changes of utility model should also be as falling into the protection scope of the claims of the present utility model.
Claims (8)
1. a kind of DC-DC booster circuit, it is characterised in that including chip U2, the flyback topologies booster circuit mould being connect with chip U2
Block and the metal-oxide-semiconductor connecting with chip U2 switch constant-current circuit module；The flyback topologies booster circuit module includes and core
The resistance R25 of the PWMH pin connection of piece U2, the first foot of resistance R25 connect the PWMH pin, test point TP2 and two poles of chip U2
The cathode of pipe D10, the first foot of the positive connecting resistance R26 of diode D10, the second of the crus secunda connecting resistance R26 of resistance R25
The grid of foot, the first foot of resistance R31 and metal-oxide-semiconductor Q2, the of the crus secunda of the source electrode connecting resistance R31 of metal-oxide-semiconductor Q2, resistance R6
First foot of one foot, the first foot of resistance R9 and resistance R10, the crus secunda of resistance R6 connect test point TP10, capacitor C5
The pin PB5 of one foot and chip U2, the crus secunda of resistance R9 connect the crus secunda of capacitor C5, resistance R10 crus secunda and connect
Ground, the drain electrode of metal-oxide-semiconductor Q2 connect the anode of diode D8 and the pin 3 of step-up transformer L1, and the pin 1 of step-up transformer L1 connects electricity
Hinder the first foot, the first foot of capacitor C15 and the anode of power supply of R23, cathode connecting resistance the first foot of R24 of diode D8, resistance
The crus secunda of the crus secunda connecting resistance R23 of R24 and the crus secunda of capacitor C15, the pin 6 and pin 8 of step-up transformer L1 connect
Ground, the pin 7 of step-up transformer L1 connect the cathode of diode D7, the first foot while resistance of the positive electrode resistance R27 of diode D7
The crus secunda of R27 meets VCC, and the pin 5 of step-up transformer L1 connects the anode of diode D1；The model of the chip U2
HT45F3430。
2. DC-DC booster circuit as described in claim 1, it is characterised in that further include the LED light being connect with chip U2
Circuit module.
3. DC-DC booster circuit as described in claim 1, which is characterized in that the metal-oxide-semiconductor switchs constant-current circuit module packet
Driving resistance R21 and metal-oxide-semiconductor Q1 is included, the first foot of resistance R21 connects the PWML pin of chip U2, test point TP11 and diode
The cathode of D9, the crus secunda of grid connecting resistance R21 of metal-oxide-semiconductor Q1, the first foot of resistance R28, resistance R20 crus secunda, resistance
The first foot of R20 connects the anode of diode D9, the crus secunda of the source electrode connecting resistance R28 of metal-oxide-semiconductor Q1, and the drain electrode of metal-oxide-semiconductor Q1 connects electricity
Feel L3.
4. DC-DC booster circuit as described in claim 1, which is characterized in that the metal-oxide-semiconductor switch constant-current circuit module is also
Including diode D2 and diode D6, positive and diode D6 the anode of diode D2 connects the first foot and metal-oxide-semiconductor of inductance L3
The drain electrode of Q1, the crus secunda of inductance L3 connect the cathode of LED, and the of the cathode connecting resistance R1 of the cathode and diode D6 of diode D2
The anode of one foot, power supply VCC and LED, the crus secunda of resistance R1 meet test point TP4, the PA3/OVP pin of chip U2, resistance R2
The first foot, the first foot of capacitor C7 and the cathode of diode D5, the crus secunda of resistance R2, the crus secunda of capacitor C7 and two poles
The plus earth of pipe D5.
5. DC-DC booster circuit as described in claim 1, it is characterised in that the metal-oxide-semiconductor switch constant-current circuit module is also
Including capacitor C4, the first foot of capacitor C4 connects the first foot of the PA1/OCP pin of chip U2, test point TP9 and resistance R5, electricity
Hinder the first foot of crus secunda connecting resistance R7 of R5, the source electrode of the first foot of resistance R8 and metal-oxide-semiconductor Q1, crus secunda, the electricity of capacitor C4
Hinder the crus secunda of R7 and the crus secunda ground connection of resistance R8.
6. DC-DC booster circuit as claimed in claim 2, which is characterized in that the LED light circuit module includes hair
Optical diode LED1, Light-emitting diode LED 2 and key switch SW1, the first of the positive connecting resistance R30 of Light-emitting diode LED 1
First foot of foot, the cathode of Light-emitting diode LED 2 and key switch SW1, cathode, the light emitting diode of Light-emitting diode LED 1
The anode of LED2 and the crus secunda of key switch SW1 connect the PC3 pin of chip U2, and the of the crus secunda connecting resistance R29 of resistance R30
The PC2 pin of one foot and chip U2, the crus secunda of resistance R29 meet VCC.
7. DC-DC booster circuit as described in claim 1, which is characterized in that the PA2 pin of the chip U2 connects test point
TP3。
8. DC-DC booster circuit as described in claim 1, which is characterized in that the VSS pin of the chip U2 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821246820.9U CN208623552U (en) | 2018-08-03 | 2018-08-03 | A kind of DC-DC booster circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821246820.9U CN208623552U (en) | 2018-08-03 | 2018-08-03 | A kind of DC-DC booster circuit |
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| Publication Number | Publication Date |
|---|---|
| CN208623552U true CN208623552U (en) | 2019-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821246820.9U Active CN208623552U (en) | 2018-08-03 | 2018-08-03 | A kind of DC-DC booster circuit |
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| Country | Link |
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| CN (1) | CN208623552U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114120896A (en) * | 2021-12-03 | 2022-03-01 | 合肥新沪屏蔽泵有限公司 | LED indicates HPB bearing wearing and tearing gauge outfit for canned motor pump |
-
2018
- 2018-08-03 CN CN201821246820.9U patent/CN208623552U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114120896A (en) * | 2021-12-03 | 2022-03-01 | 合肥新沪屏蔽泵有限公司 | LED indicates HPB bearing wearing and tearing gauge outfit for canned motor pump |
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