CN109861510A - A kind of diode with low power consumption replacement circuit - Google Patents
A kind of diode with low power consumption replacement circuit Download PDFInfo
- Publication number
- CN109861510A CN109861510A CN201811393295.8A CN201811393295A CN109861510A CN 109861510 A CN109861510 A CN 109861510A CN 201811393295 A CN201811393295 A CN 201811393295A CN 109861510 A CN109861510 A CN 109861510A
- Authority
- CN
- China
- Prior art keywords
- connect
- diode
- power tube
- feet
- nmos
- 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.)
- Pending
Links
Abstract
A kind of diode with low power consumption replacement circuit provided by the invention；Including NMOS power tube Q1, Q2, control circuit, the drain and gate of described NMOS power tube Q1, Q2 interconnect, the drain electrode of NMOS power tube Q1 is connect with input terminal IN, and the drain electrode of NMOS power tube Q2 is connect with output end OUT, and the grid of NMOS power tube Q1, Q2 connect to the control circuit.The small feature of internal resistance is connected by NMOS high power tube actuation techniques and NMOS power tube in the present invention, makes soft diode have the response time fast, controls advantage with high accuracy；Small with conducting resistance, low in energy consumption, the small advantage of calorific value is suitable for various high current applications.
Description
Technical field
The present invention relates to a kind of diode with low power consumption replacement circuits.
Background technique
Many large power supplies are in use, be reverse irrigation when external voltage being prevented to be higher than electric power output voltage, in output end
All design has diode anti-back flow circuit.Since diode has fixed tube voltage drop and dynamic electric resistor is larger, when by electric current compared with
When big, the power consumption of diode itself is very big, and calorific value is also big, brings very big difficulty to design.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of diode with low power consumption replacement circuits.
The present invention is achieved by the following technical programs.
A kind of diode with low power consumption replacement circuit provided by the invention；Including NMOS power tube Q1, Q2, control circuit, institute
The drain and gate for stating NMOS power tube Q1, Q2 interconnects, and the drain electrode of NMOS power tube Q1 is connect with input terminal IN, NMOS function
The drain electrode of rate pipe Q2 is connect with output end OUT, and the grid of NMOS power tube Q1, Q2 connect to the control circuit.
The control circuit includes driver N1, zener diode D1, zener diode D2, zener diode D3；Driving
1 foot of output signal end of device N1 is connect with the grid of NMOS power tube Q1, Q2, and 8 feet of driver N1 are connect with output end OUT；
The 6 feet connection zener diode D2 cathode of driver N1 is simultaneously connect by D2 with 8 feet；4 feet of driver N1 connect with 2 feet and with
Input terminal IN connection；Voltage-stabiliser tube D1 anode is connect with 1 foot, and negative terminal is connect with 2 feet；Voltage-stabiliser tube D3 anode is connect with 2 feet, cathode with
6 feet are connect with ground terminal GND jointly.
The driver N1 is driving chip LTC4359.
Resistance R2 is also connected between the driver N1 and output end OUT.
There are also resistance R1 for the front end of the ground terminal GND.
The beneficial effects of the present invention are: it is small that internal resistance is connected by NMOS high power tube actuation techniques and NMOS power tube
Feature makes soft diode have the response time fast, controls advantage with high accuracy；Small with conducting resistance, low in energy consumption, calorific value is small
The advantages of, it is suitable for various high current applications.
Detailed description of the invention
Fig. 1 is circuit diagram of the invention.
Specific embodiment
Be described further below technical solution of the present invention, but claimed range be not limited to it is described.
A kind of diode with low power consumption replacement circuit；Including NMOS power tube Q1, Q2, control circuit, the NMOS power tube
The drain and gate of Q1, Q2 interconnect, and the drain electrode of NMOS power tube Q1 is connect with input terminal IN, the drain electrode of NMOS power tube Q2
It is connect with output end OUT, the grid of NMOS power tube Q1, Q2 connect to the control circuit.
The control circuit includes driver N1, zener diode D1, zener diode D2, zener diode D3；Driving
1 foot of output signal end of device N1 is connect with the grid of NMOS power tube Q1, Q2, and 8 feet of driver N1 are connect with output end OUT；
The 6 feet connection zener diode D2 cathode of driver N1 is simultaneously connect by D2 with 8 feet；4 feet of driver N1 connect with 2 feet and with
Input terminal IN connection；Voltage-stabiliser tube D1 anode is connect with 1 foot, and negative terminal is connect with 2 feet；Voltage-stabiliser tube D3 anode is connect with 2 feet, cathode with
6 feet are connect with ground terminal GND jointly.
The driver N1 is driving chip LTC4359.
Resistance R2 is also connected between the driver N1 and output end OUT.
There are also resistance R1 for the front end of the ground terminal GND.
Circuit of the present invention uses NMOS tube and dedicated metal-oxide-semiconductor Drive technology, and soft diode circuit has wide work electricity
Range, greatly output electric current are pressed, conducting internal resistance is less than 5m Ω.
Working principle is as follows: when the 2 foot voltages that controller N1 is detected are higher than 8 foot voltages, 1 foot exports positive control electricity
Pressure, control NMOS power tube Q1, Q2 conducting, the internal resistance of Q1Q2 conducting at this time is very low, usually less than 3m Ω, generation when electric current passes through
Power consumption also can be very low, calorific value also just responds small.When the 2 foot voltages that controller N1 is detected are lower than 8 foot voltages, 1 foot is defeated
Low control voltage out, control NMOS power tube Q1, Q2 cut-off, at this time " IN " input terminal and OUT " output end is isolated, output voltage
Meeting input terminal will not be flowed backward, therefore circuit has the characteristic of diode, the on and off of simulated implementation diode realizes low function
Consumption, lower calorific value conducting and reverse-filling function.
Claims (5)
1. a kind of diode with low power consumption replacement circuit, it is characterised in that: described including NMOS power tube Q1, Q2, control circuit
The drain and gate of NMOS power tube Q1, Q2 interconnect, and the drain electrode of NMOS power tube Q1 is connect with input terminal IN, NMOS power
The drain electrode of pipe Q2 is connect with output end OUT, and the grid of NMOS power tube Q1, Q2 connect to the control circuit.
2. diode with low power consumption replacement circuit as described in claim 1, it is characterised in that: the control circuit includes driver
N1, zener diode D1, zener diode D2, zener diode D3；1 foot of output signal end and NMOS power tube of driver N1
The grid of Q1, Q2 connect, and 8 feet of driver N1 are connect with output end OUT；The 6 feet connection zener diode D2 of driver N1 is negative
Pole is simultaneously connect by D2 with 8 feet；4 feet of driver N1 connect with 2 feet and connect with input terminal IN；Voltage-stabiliser tube D1 anode and 1 foot
Connection, negative terminal are connect with 2 feet；Voltage-stabiliser tube D3 anode is connect with 2 feet, and cathode is connect with ground terminal GND jointly with 6 feet.
3. diode with low power consumption replacement circuit as described in claim 1, it is characterised in that: the driver N1 is driving chip
LTC4359。
4. diode with low power consumption replacement circuit as described in claim 1, it is characterised in that: the driver N1 and output end
Resistance R2 is also connected between OUT.
5. diode with low power consumption replacement circuit as described in claim 1, it is characterised in that: the front end of the ground terminal GND is also
There is resistance R1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811393295.8A CN109861510A (en) | 2018-11-21 | 2018-11-21 | A kind of diode with low power consumption replacement circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811393295.8A CN109861510A (en) | 2018-11-21 | 2018-11-21 | A kind of diode with low power consumption replacement circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109861510A true CN109861510A (en) | 2019-06-07 |
Family
ID=66890194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811393295.8A Pending CN109861510A (en) | 2018-11-21 | 2018-11-21 | A kind of diode with low power consumption replacement circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109861510A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111478690A (en) * | 2020-04-15 | 2020-07-31 | 贵州航天天马机电科技有限公司 | High-reliability electronic switch circuit and control method |
-
2018
- 2018-11-21 CN CN201811393295.8A patent/CN109861510A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111478690A (en) * | 2020-04-15 | 2020-07-31 | 贵州航天天马机电科技有限公司 | High-reliability electronic switch circuit and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101895281B (en) | Novel MOS tube drive circuit for switch power supply | |
| CN105471243A (en) | Limitation circuit of starting impact current | |
| CN104023455B (en) | A kind of constant current driver circuit for LED based on BJT switching tube | |
| CN102081418A (en) | Linear constant voltage control circuit | |
| CN203858468U (en) | Air conditioner standby power consumption control circuit and air conditioner | |
| CN106533144B (en) | Anti-reverse and current flowing backwards circuit | |
| CN109861510A (en) | A kind of diode with low power consumption replacement circuit | |
| CN102035381B (en) | BOOST circuit with adjusting starting voltage | |
| CN106130525A (en) | One-way conduction circuit and the distribution line failure positioner made with this circuit | |
| CN105811960B (en) | A kind of level displacement circuit using thin grid oxygen metal-oxide-semiconductor | |
| CN104185345A (en) | Control device used for LED constant-current driving circuit | |
| CN103414163A (en) | Direct-current power supply output overcurrent protection device | |
| CN207896947U (en) | The control circuit of high temperature shutdown is realized using PN junction reverse leakage current temperature characterisitic | |
| CN101976938B (en) | Stable and reliable-operation heavy-current low-pressure drop one-way conducting circuit | |
| CN201191757Y (en) | Fast low voltage difference current limiting circuit | |
| CN106211479B (en) | A kind of intelligent protection circuit for buffering transient high-current | |
| CN105610176B (en) | Thyristor Super-zero control device | |
| CN209072054U (en) | A kind of low-voltage, high-current counnter attack filling circuit | |
| CN105227166A (en) | A kind of metal-oxide-semiconductor back gate voltage control circuit | |
| CN204795768U (en) | LED constant -current drive circuit | |
| CN108683416A (en) | A kind of load switch control circuit | |
| CN211046899U (en) | Low-power consumption controllable switch circuit | |
| CN104901520B (en) | A kind of base voltage control circuit for the framework that boosts | |
| CN205961079U (en) | Unidirectional flux circuit and distribution lines fault location device who makes with this circuit | |
| CN203788143U (en) | Stacked voltage generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190607 |
|
| RJ01 | Rejection of invention patent application after publication |