CN106452392A - Sawtooth wave generating circuit - Google Patents
Sawtooth wave generating circuit Download PDFInfo
- Publication number
- CN106452392A CN106452392A CN201610898063.2A CN201610898063A CN106452392A CN 106452392 A CN106452392 A CN 106452392A CN 201610898063 A CN201610898063 A CN 201610898063A CN 106452392 A CN106452392 A CN 106452392A
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- CN
- China
- Prior art keywords
- circuit
- resistance
- wave generating
- generating circuit
- sawtooth wave
- 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.)
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K4/00—Generating pulses having essentially a finite slope or stepped portions
- H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
- H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
- H03K4/48—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dc-Dc Converters (AREA)
- Rectifiers (AREA)
Abstract
The invention relates to the field of power supply control, and particularly relates to a sawtooth wave generating circuit. The sawtooth wave generating circuit comprises a sampling current processing circuit, an auxiliary sawtooth wave generating circuit, a main sawtooth wave generating circuit and a second comparison circuit; in the sawtooth wave generating circuit provided by the invention and applied to a power supply module in a power supply analyzer, sampling current sampled from two primary sides connected in parallel of a transformer of the power supply module, sawtooth waves generated by the main sawtooth wave generating circuit and auxiliary sawtooth waves generated by the auxiliary sawtooth wave generating circuit are superposed and are compared with an error voltage fed back by a comparator to generate sawtooth waves of specified arbitrary waveforms; and since the sawtooth waves are achieved in this manner, the waveforms of the sawtooth waves are guaranteed to locate in a rising trend without saturating in the entire PWM duty cycle period.
Description
Technical field
The present invention relates to power supply field, particularly a kind of sawtooth wave generating circuit.
Background technology
Generally, when the test related to DC source is carried out, engineer must collect and configure multiple stage instrument, could be complete
Become direct current supply and measuring task.When these complex tasks are executed, multiple stage test instrunment may be connected to simultaneously, so as to increase
The risk of error；For this purpose, engineer may select the automatic test more than manual test complexity, although automatic test task
Manual errors can be reduced, but the research and development engineer for writing with debugging routine to having worked overloadingly further increases work
Amount.And the appearance of DC source analyser avoids engineer using the debugging for carrying out complexity before multiple devices and test.Electricity
Electric current of the source analyser by the measurable inflow DUT of its built-in electric current kinetic measurement ability, without such as current probe
With this kind of sensor of diverter；DC source analyser is without the need for exploitation control and process of measurement, and institute is functional and measurement is all integrated
In same equipment, without PC, driver and software, more than 90% is reduced equivalent to the workload related to setting；
The direct current supply that user then can be just completed with 2 day time using independent test equipment and measurement test assignment, using unidirectional current
Source analyser just be able to can be completed in 5 minutes.And usual, circuit tester module, oscillograph mould is integrated with DC source analyser
There is module, data recordin module and multiple DC power suppliers in block, random waveform, wherein, it is each that each power module is produced
It is to be produced to specify the sawtooth waveforms PWM control pulse of waveform to be controlled producing to power conversion module by control module to plant random waveform
Raw, whether the performance that the stability direct relation of the sawtooth wave generating circuit whole DC source analyser is reliable and stable.
Content of the invention
The goal of the invention of the present invention is the need for the sawtooth wave generating circuit in DC source analyser to stability
Ask, a kind of working stability is provided, it is adaptable to the sawtooth wave generating circuit of particular power module in power analysis instrument.
To achieve these goals, the technical solution used in the present invention is：
A kind of sawtooth wave generating circuit, produces electricity including sample rate current process circuit, auxiliary sawtooth wave generating circuit, main sawtooth waveforms
Road and the second comparison circuit；
The sample rate current process circuit includes two inputs, and described two inputs are received from circuit for power conversion respectively
The sample rate current of two, transformator former limit collection in parallel, and export after being processed into the first signal；
The auxiliary sawtooth-wave circuit receives the first control wave P_RAMP for sending from controller, and is processed into
Export after secondary signal；
The main sawtooth-wave circuit receives the second control wave AUX_RAMP for sending from controller, and is processed into
Export after 3rd signal.
First signal, secondary signal and the 3rd Signal averaging are the 4th signal, the 4th signal transmission to second
Comparison circuit positive terminal；The end of oppisite phase of second comparison circuit receives an error voltage signal, and exports sawtooth waveforms.
Further, sample rate current process circuit includes to be sequentially connected full bridge rectifier, resistance sampling circuit, filtering
Circuit and the first build-out resistor；The two ends of the resistance sampling circuit connect two outputs of the full bridge rectifier respectively
End.
Further, the filter circuit is LC filter circuit
Further, the auxiliary sawtooth wave generating circuit includes the first negative circuit, the first charge-discharge circuit being sequentially connected
And second build-out resistor.
Further, the first charge-discharge circuit includes first resistor, second resistance and the first electric capacity；The second resistance
One end is connected with the outfan of first negative circuit, the other end of the second resistance and the first resistor, the first electricity
One end connection of appearance；The other end of the first resistor is connected with power supply；The other end ground connection of first electric capacity.
Further, the main sawtooth wave generating circuit includes the second negative circuit, the second discharge and recharge electricity being sequentially connected
Road, comparison circuit and the 3rd build-out resistor.
Further, the second charge-discharge circuit includes 3rd resistor, the 4th resistance and the second electric capacity；The 3rd resistor
One end is connected with the outfan of second negative circuit, the other end of the 3rd resistor and the 4th resistance, the second electricity
One end connection of appearance；The other end of the 4th resistance is connected with power supply；The other end ground connection of second electric capacity.
Further, the comparison circuit includes the 5th resistance, the 6th resistance, the 7th resistance and comparator；Described 5th
One end of resistance is connected with the normal phase input end of comparator, and the other end is connected with the outfan of the comparator；The comparator
Inverting input be connected with described second capacity earth one end by the 6th resistance；The inverting input of the comparator also leads to
Cross the 7th resistance to be connected with the outfan of comparator；The normal phase input end of the comparator also with the 3rd resistor, the 4th electricity
One end connection of resistance connection.
In sum, due to employing technique scheme, the invention has the beneficial effects as follows：
In sawtooth wave generating circuit provided by the present invention for power module in power analysis instrument, employing will be gathered from power supply mould
The sample rate current of block transformator two former limits for connecing, the sawtooth waveforms of main sawtooth wave generating circuit generation, auxiliary sawtooth-wave circuit
After the auxiliary sawtooth waveforms superposition of generation, produce, after being compared with the error voltage for feeding back by a comparator, any ripple that specifies
The sawtooth waveforms of shape；Adopt in this way and realize sawtooth waveforms and ensure that the waveform of sawtooth waveforms is equal within the whole PWM duty cycle cycle
In ascendant trend unsaturation.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is sample rate current process circuit circuit diagram in the present invention.
Fig. 3 is auxiliary sawtooth wave generating circuit and main sawtooth wave generating circuit circuit diagram in the present invention.
Fig. 4 is comparison circuit circuit diagram in the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, not
For limiting the present invention.
Embodiment 1：As shown in Figure 1, Figure 2, Figure 3, Figure 4, the present embodiment provides a kind of sawtooth wave generating circuit, including sampling
Current processing circuits 1, auxiliary sawtooth wave generating circuit 2, main sawtooth wave generating circuit 3 and the second comparison circuit 4；
The sample rate current process circuit 1 includes two inputs, and described two inputs are received from circuit for power conversion respectively
The sample rate current for gathering at two former limits in parallel of middle transformator, and export after being processed into the first signal SIG1；
The auxiliary sawtooth-wave circuit receives the first control wave P_RAMP for sending from controller, and is processed into
Export after secondary signal SIG2；
The main sawtooth-wave circuit receives the second control wave AUX_RAMP for sending from controller, and is processed into
Export after 3rd signal SIG3.
The first signal SIG1, secondary signal SIG2 and the 3rd signal SIG3 are superposed to the 4th signal SIG4, and described
Four signal SIG4 are transmitted to 4 positive terminal of the second comparison circuit；The end of oppisite phase of second comparison circuit 4 receives error voltage letter
Number, and export sawtooth waveforms.
Sample rate current process circuit 1 includes full bridge rectifier 11, the resistance sampling circuit 12, filter circuit being sequentially connected
13 and first build-out resistor R2；The two ends of the resistance sampling circuit 12 connect the full bridge rectifier 11 respectively two are defeated
Go out end.As shown in Fig. 2 in specific embodiment, the resistance sampling circuit 12 is resistance R1.
The filter circuit 13 is LC filter circuit；L1 as shown in Figure 2 and C1 is LC filter circuit.
The auxiliary sawtooth wave generating circuit 2 includes the first negative circuit 21, the first charge-discharge circuit 22 being sequentially connected
And second build-out resistor R3.
First charge-discharge circuit 22 includes first resistor R4, second resistance R5 and the first electric capacity C2；Second resistance R5
One end be connected with the outfan of first negative circuit 21, the other end of second resistance R5 and the first resistor
R4, one end connection of the first electric capacity C2；The other end of first resistor R4 is connected with power supply VCC；The first electric capacity C2's
The other end is grounded.
The main sawtooth wave generating circuit 3 includes the second negative circuit 31 being sequentially connected, the second charge-discharge circuit 32, compares
Compared with circuit 33 and the 3rd build-out resistor R11.
Second charge-discharge circuit 32 includes 3rd resistor R6, the 4th resistance R7 and the second electric capacity C6；3rd resistor R6
One end be connected with the outfan of second negative circuit 31, the other end of 3rd resistor R6 and the 4th resistance
R7, one end connection of the second electric capacity C6；The other end of the 4th resistance R7 is connected with power supply VCC；The second electric capacity C6's
The other end is grounded.
The comparison circuit 33 includes the 5th resistance R8, the 6th resistance R9, the 7th resistance R10 and comparator U1；Described
One end of five resistance R8 is connected with the normal phase input end of comparator, and the other end is connected with the outfan of the comparator U1；Described
The inverting input of comparator is grounded one end by the 6th resistance R9 with the second electric capacity C6 and is connected；The comparator U1's is anti-
Phase input is connected with the outfan of comparator U1 also by the 7th resistance R10；The normal phase input end of the comparator U1 also with
3rd resistor R6, one end connection of the 4th resistance R7 connection.
Presently preferred embodiments of the present invention is the foregoing is only, not in order to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement that is made within god and principle etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of sawtooth wave generating circuit, it is characterised in that including sample rate current process circuit, auxiliary sawtooth wave generating circuit,
Main sawtooth wave generating circuit and the second comparison circuit；
The sample rate current process circuit includes two inputs, and described two inputs are received from circuit for power conversion respectively
The sample rate current of two, transformator former limit collection in parallel, and export after being processed into the first signal；
The auxiliary sawtooth-wave circuit receives the first control wave P_RAMP for sending from controller, and is processed into
Export after secondary signal；
The main sawtooth-wave circuit receives the second control wave AUX_RAMP for sending from controller, and is processed into
Export after 3rd signal；
First signal, secondary signal and the 3rd Signal averaging are the 4th signal, and the 4th signal transmission compares to second
Circuit positive terminal；The end of oppisite phase of second comparison circuit receives an error voltage signal, and exports sawtooth waveforms.
2. sawtooth wave generating circuit according to claim 1, it is characterised in that sample rate current process circuit includes to connect successively
Full bridge rectifier, resistance sampling circuit, filter circuit and the first build-out resistor for connecing；The two ends of the resistance sampling circuit are divided
Do not connect two outfans of the full bridge rectifier.
3. sawtooth wave generating circuit according to claim 2, it is characterised in that the filter circuit be.
4. sawtooth wave generating circuit according to claim 1, it is characterised in that the auxiliary sawtooth wave generating circuit includes
The first negative circuit, the first charge-discharge circuit and the second build-out resistor being sequentially connected.
5. sawtooth wave generating circuit according to claim 4, it is characterised in that the first charge-discharge circuit includes the first electricity
Resistance, second resistance and the first electric capacity；One end of the second resistance is connected with the outfan of first negative circuit, and described
The other end of two resistance is connected with one end of the first resistor, the first electric capacity；The other end of the first resistor is with power supply even
Connect；The other end ground connection of first electric capacity.
6. sawtooth wave generating circuit according to claim 1, it is characterised in that the main sawtooth wave generating circuit include according to
Second negative circuit of secondary connection, the second charge-discharge circuit, comparison circuit and the 3rd build-out resistor.
7. sawtooth wave generating circuit according to claim 6, it is characterised in that the second charge-discharge circuit includes the 3rd electricity
Resistance, the 4th resistance and the second electric capacity；One end of the 3rd resistor is connected with the outfan of second negative circuit, and described
The other end of three resistance is connected with one end of the 4th resistance, the second electric capacity；The other end of the 4th resistance is with power supply even
Connect；The other end ground connection of second electric capacity.
8. sawtooth wave generating circuit according to claim 6, it is characterised in that the comparison circuit include the 5th resistance,
6th resistance, the 7th resistance and comparator；One end of 5th resistance is connected with the normal phase input end of comparator, the other end with
The outfan connection of the comparator；The inverting input of the comparator is by the 6th resistance and second capacity earth one
End connection；The inverting input of the comparator is connected with the outfan of comparator also by the 7th resistance；The comparator
One end connection that normal phase input end is also connected with the 3rd resistor, the 4th resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610898063.2A CN106452392B (en) | 2016-10-14 | 2016-10-14 | Sawtooth wave generating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610898063.2A CN106452392B (en) | 2016-10-14 | 2016-10-14 | Sawtooth wave generating circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106452392A true CN106452392A (en) | 2017-02-22 |
| CN106452392B CN106452392B (en) | 2023-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610898063.2A Active CN106452392B (en) | 2016-10-14 | 2016-10-14 | Sawtooth wave generating circuit |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2243544A1 (en) * | 1973-09-06 | 1975-04-04 | Garching Instr Ind | Variable stabilised DC voltage transformer - with DC-AC converter controlled from loop containing sawtooth generator and trigger |
| US4041405A (en) * | 1976-08-13 | 1977-08-09 | General Electric Company | Sawtooth waveform generator |
| GB1498044A (en) * | 1975-03-13 | 1978-01-18 | Rca Corp | Sawtooth signal generator |
| JPH05183399A (en) * | 1991-12-27 | 1993-07-23 | Sony Corp | Sawtooth wave generation circuit and pulse generation circuit using same |
| US5436550A (en) * | 1993-01-22 | 1995-07-25 | Tokyo, Inc. | AC-DC converter having saw-tooth wave generating circuit in active filter |
| CN1794579A (en) * | 2006-01-12 | 2006-06-28 | 上海交通大学 | Switching frequency period modulated sawteeth wave generating circuit |
| CN101639670A (en) * | 2009-07-17 | 2010-02-03 | 高长春 | Resonant half-bridge power converter with feedforward compensation control function |
| CN203225668U (en) * | 2013-04-15 | 2013-10-02 | 成都瑞途电子有限公司 | Circuit for converting sinusoidal alternating current electric signal into sawtooth wave electric signal |
| CN206099924U (en) * | 2016-10-14 | 2017-04-12 | 成都前锋电子仪器有限责任公司 | Sawtooth wave produces circuit |
| CN109728738A (en) * | 2017-10-30 | 2019-05-07 | 南京白牙智能科技有限公司 | A kind of invariable power compensation circuit |
-
2016
- 2016-10-14 CN CN201610898063.2A patent/CN106452392B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2243544A1 (en) * | 1973-09-06 | 1975-04-04 | Garching Instr Ind | Variable stabilised DC voltage transformer - with DC-AC converter controlled from loop containing sawtooth generator and trigger |
| GB1498044A (en) * | 1975-03-13 | 1978-01-18 | Rca Corp | Sawtooth signal generator |
| US4041405A (en) * | 1976-08-13 | 1977-08-09 | General Electric Company | Sawtooth waveform generator |
| JPH05183399A (en) * | 1991-12-27 | 1993-07-23 | Sony Corp | Sawtooth wave generation circuit and pulse generation circuit using same |
| US5436550A (en) * | 1993-01-22 | 1995-07-25 | Tokyo, Inc. | AC-DC converter having saw-tooth wave generating circuit in active filter |
| CN1794579A (en) * | 2006-01-12 | 2006-06-28 | 上海交通大学 | Switching frequency period modulated sawteeth wave generating circuit |
| CN101639670A (en) * | 2009-07-17 | 2010-02-03 | 高长春 | Resonant half-bridge power converter with feedforward compensation control function |
| CN203225668U (en) * | 2013-04-15 | 2013-10-02 | 成都瑞途电子有限公司 | Circuit for converting sinusoidal alternating current electric signal into sawtooth wave electric signal |
| CN206099924U (en) * | 2016-10-14 | 2017-04-12 | 成都前锋电子仪器有限责任公司 | Sawtooth wave produces circuit |
| CN109728738A (en) * | 2017-10-30 | 2019-05-07 | 南京白牙智能科技有限公司 | A kind of invariable power compensation circuit |
Non-Patent Citations (1)
| Title |
|---|
| 孙玉轩 等: "一种新型高压线性锯齿波的设计及实现", 《测控技术》, pages 62 - 64 * |
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| CN106452392B (en) | 2023-07-07 |
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