CN208424327U - The output comparison circuit of electric pressure converter - Google Patents
The output comparison circuit of electric pressure converter Download PDFInfo
- Publication number
- CN208424327U CN208424327U CN201821106662.7U CN201821106662U CN208424327U CN 208424327 U CN208424327 U CN 208424327U CN 201821106662 U CN201821106662 U CN 201821106662U CN 208424327 U CN208424327 U CN 208424327U
- Authority
- CN
- China
- Prior art keywords
- circuit
- output
- electric pressure
- pressure converter
- comparator
- 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.)
- Active
Links
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The utility model relates to the output comparison circuits of electric pressure converter, including electric pressure converter basic circuit, pwm control circuit is connected in the basic circuit, it is characterized by also including have input anode, input cathode, negative pole of output end, comparator, isolation optocoupler and zener diode, the comparator backward end connects reference circuit, end is connected with conditioning circuit in the same direction for it, the comparator output terminal is connect with isolation optocoupler, the zener diode is serially connected between comparator output terminal and isolation optocoupler, the utility model has the following beneficial effects: to output electric current, voltage is compared with benchmark, guarantee normal voltage, the output of electric current, guarantee the stability of pwm control circuit.
Description
Technical field
The utility model relates to electrocar electric pressure converter fields, and in particular to the output of electric pressure converter is more electric
Road.
Background technique
The illumination of pure electric sedan, instruction, the alert circuit that rings largely are supplied using the voltage after electric pressure converter is converted,
And the main power source of electric vehicle is greater than 36v voltage, thus need the voltage 36v and 36v or more by obtaining after conversion circuit
The circuits work such as required rated operational voltage supply is illuminated, indicated, ring is alert.
Existing pure electric vehicle electric pressure converter includes electric pressure converter basic circuit, is connected in the basic circuit
Pwm control circuit, the PWM are the modulation of PulseWidthModulation(pulse width) abbreviation, in electric pressure converter,
The circuits such as illumination, instruction, ring police show since each connector and connecting line long-time service can generate aging and be also easy to produce short circuit phenomenon
Some electric pressure converters are only equipped with a high frequency transformer in inside and detect operating current, when output end has the failures such as short circuit
When, the electric current of electric pressure converter exports the phenomenon that still remaining unchanged, damaging pwm control circuit.
A kind of output electric current, output voltage are compared with safe current, safe voltage in view of this, needing to develop
Circuit guarantees the stability of output end.
Utility model content
The technical problem to be solved by the utility model is in view of the above shortcomings of the prior art,
The output comparison circuit of electric pressure converter is provided.
To achieve the above object, the utility model provides following technical solution: the output comparison circuit of electric pressure converter,
Including electric pressure converter basic circuit, be connected with pwm control circuit in the basic circuit, it is characterised in that: further include have it is defeated
Enter proper pole, input cathode, negative pole of output end, comparator, isolation optocoupler and zener diode, the comparator backward end connects
Reference circuit is connect, end is connected with conditioning circuit in the same direction, and the comparator output terminal is connect with isolation optocoupler, two pole of pressure stabilizing
Pipe is serially connected between comparator output terminal and isolation optocoupler.
The output comparison circuit of above-mentioned electric pressure converter can be further arranged to: the reference circuit includes concatenated
First reference resistance and the second reference resistance, the conditioning circuit include the first conditioning resistance being arranged in parallel and the second conditioning
Resistance is serially connected with integrating circuit in reference circuit, adds to comparator after amplifying reference signal by the integrating circuit and hold in the same direction.
The output comparison circuit of above-mentioned electric pressure converter can be further arranged to: zener diode side connects output end
The positive other side is connected with voltage regulation resistance, and the voltage regulation resistance is serially connected with isolation optocoupler pair side, the isolation optocoupler primary side connection
Second diode and outside output voltage.
The output comparison circuit of above-mentioned electric pressure converter can be further arranged to: isolation optocoupler primary side is connected with third electricity
Resistance, the 3rd resistor other end are connected with input cathode.
The output comparison circuit of above-mentioned electric pressure converter can be further arranged to: described comparator one end is connected to output end
Cathode.
By adopting the above technical scheme, isolation optocoupler includes to be set to the light emitting diode of primary side and be set to the three of secondary side
Pole pipe, integrating circuit include the first diode being arranged in series with the second conditioning resistance, the first reference resistance and the second benchmark electricity
Resistance concatenation partial pressure forms benchmark and adds to comparator backward end, adds to comparator after the integrated amplification of conditioning circuit and holds in the same direction, works as tune
Comparator output high level driving isolation optocoupler pair side conducting makes chip pin PR be in high level when reason signal is higher than benchmark, instead
Conditioned signal when being lower than benchmark PP be then low level state, while output end output voltage adds to zener diode, pressure stabilizing electricity
Composed by hindering in sequential circuit, when output end voltage is higher than zener diode pressure stabilizing value, electric current is by zener diode, steady
Piezoresistance and the light emitting diode of isolation optocoupler primary side and drive isolation optocoupler pair side triode to export high level to PR；Otherwise it is defeated
PR is in low level state when outlet voltage is lower than zener diode value.
The utility model has the following beneficial effects: being compared to output electric current, voltage with benchmark, guarantee normal voltage, electricity
The output of stream guarantees the stability of pwm control circuit.
The utility model is described in further detail with reference to the accompanying drawings and examples.
Detailed description of the invention
Fig. 1 is the electrical block diagram of the utility model embodiment.
Specific embodiment
It is shown in Figure 1: the output comparison circuit of electric pressure converter, including electric pressure converter basic circuit, it is basic at this
It is connected with pwm control circuit in circuit, further includes having input anode, input cathode, negative pole of output end, comparator 1, isolation
Optocoupler 2 and zener diode 3,1 backward end of comparator connect reference circuit, and end is connected with conditioning circuit in the same direction, and comparator 1 is defeated
Outlet is connect with isolation optocoupler 2, and zener diode 3 is serially connected between 1 output end of comparator and isolation optocoupler 2, reference circuit packet
Concatenated first reference resistance 4 and the second reference resistance 5 are included, conditioning circuit includes the first conditioning resistance 6 being arranged in parallel
And the second conditioning resistance 7, integrating circuit is serially connected in reference circuit, and ratio is added to after amplifying reference signal by the integrating circuit
It is held in the same direction compared with device 1, isolation optocoupler 2 includes the light emitting diode 21 for being set to primary side and the triode 22 for being set to secondary side, product
Parallel circuit includes the first diode 9 being arranged in series with the second conditioning resistance 7, and 3 side of zener diode connects output head anode
The other side is connected with voltage regulation resistance 101, and voltage regulation resistance 101 is serially connected with the secondary side of isolation optocoupler 2,2 primary side of isolation optocoupler connection second
Diode 102 and outside output voltage, 2 primary side of isolation optocoupler are connected with 3rd resistor 23,23 other end of 3rd resistor and input
Cathode is held to be connected, 1 one end of comparator is connected to negative pole of output end.
Claims (5)
1. the output comparison circuit of electric pressure converter, including electric pressure converter basic circuit, are connected with PWM in the basic circuit
Control circuit, it is characterised in that: further include having input anode, input cathode, negative pole of output end, comparator, isolation optocoupler
And zener diode, the comparator backward end connect reference circuit, end is connected with conditioning circuit in the same direction, and the comparator is defeated
Outlet is connect with isolation optocoupler, and the zener diode is serially connected between comparator output terminal and isolation optocoupler.
2. the output comparison circuit of electric pressure converter according to claim 1, it is characterised in that: the reference circuit includes
Have concatenated first reference resistance and the second reference resistance, the conditioning circuit include the first conditioning resistance being arranged in parallel and
Second improves resistance, is serially connected with integrating circuit in reference circuit, adds to and compare after being amplified reference signal by the integrating circuit
Device is held in the same direction.
3. the output comparison circuit of electric pressure converter according to claim 2, it is characterised in that: zener diode side connects
It connects the output head anode other side and is connected with voltage regulation resistance, the voltage regulation resistance is serially connected with isolation optocoupler pair side, the isolation optocoupler
Primary side is connected to the second diode and outside output voltage.
4. the output comparison circuit of electric pressure converter according to claim 3, it is characterised in that: the connection of isolation optocoupler primary side
There is 3rd resistor, the 3rd resistor other end is connected with input cathode.
5. the output comparison circuit of electric pressure converter according to claim 4, it is characterised in that: described comparator one end connects
Logical negative pole of output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821106662.7U CN208424327U (en) | 2018-07-13 | 2018-07-13 | The output comparison circuit of electric pressure converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821106662.7U CN208424327U (en) | 2018-07-13 | 2018-07-13 | The output comparison circuit of electric pressure converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208424327U true CN208424327U (en) | 2019-01-22 |
Family
ID=65126646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821106662.7U Active CN208424327U (en) | 2018-07-13 | 2018-07-13 | The output comparison circuit of electric pressure converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208424327U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108847832A (en) * | 2018-07-13 | 2018-11-20 | 温州德力汽摩部件有限公司 | The output comparison circuit of electric pressure converter |
-
2018
- 2018-07-13 CN CN201821106662.7U patent/CN208424327U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108847832A (en) * | 2018-07-13 | 2018-11-20 | 温州德力汽摩部件有限公司 | The output comparison circuit of electric pressure converter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101916548B (en) | Control circuit of light-emitting diode (LED) lamp tube of liquid crystal display | |
| CN201131071Y (en) | Constant-current drive circuit of LED | |
| US20190221373A1 (en) | Ripple current generating circuit | |
| CN106505513B (en) | A kind of LED drive power and its output end short-circuit protection circuit | |
| CN103595256A (en) | DC/DC power system for electric vehicle | |
| CN201377769Y (en) | High-power high-voltage input explosion-proof intrinsically-safe LED illuminating lamp | |
| CN104427721B (en) | Led drive circuit | |
| CN208424327U (en) | The output comparison circuit of electric pressure converter | |
| CN104540271A (en) | Self-adaptive type LED driving circuit | |
| CN213991102U (en) | Constant current circuit for multi-path steering lamp | |
| JP2020527011A (en) | Charging lighting circuit | |
| CN104852563A (en) | Switching power supply external soft start circuit | |
| CN107579648A (en) | A kind of inverse-excitation type switch power-supply and its control circuit | |
| CN105591542B (en) | A kind of Buck converters and its reflux control circuit | |
| CN204465995U (en) | For the driving power of large-power light-emitting diodes | |
| CN108847832A (en) | The output comparison circuit of electric pressure converter | |
| CN204350368U (en) | A kind of self-adaptation type LED drive circuit | |
| CN208638014U (en) | Alternating current and direct current protection circuit against input over-voltage | |
| CN201256072Y (en) | Single tube switch power supply for self-coupling switch transformer | |
| CN102111936B (en) | Light emitting diode (LED) driving power supply | |
| CN104066260A (en) | LED detecting circuit, driving circuit and lighting system | |
| CN204104190U (en) | LED drive power and LED display | |
| CN103715900A (en) | Fly-back converter circuit | |
| CN209673929U (en) | A kind of IGBT short-circuit detecting circuit | |
| CN208969156U (en) | The output current sampling circuit of pure electric sedan electric pressure converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |