CN206096207U - Arbitrary wave generator of DDS - Google Patents
Arbitrary wave generator of DDS Download PDFInfo
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- CN206096207U CN206096207U CN201621126582.9U CN201621126582U CN206096207U CN 206096207 U CN206096207 U CN 206096207U CN 201621126582 U CN201621126582 U CN 201621126582U CN 206096207 U CN206096207 U CN 206096207U
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Abstract
The utility model relates to a power supply circuit field, especially an arbitrary wave generator of DDS. The utility model provides an arbitrary wave generator of DDS is including the N position full adder, accumulator register, waveform memory, DA converter and the low pass filter that concatenate in proper order, it can produce the random waveform data according to control, with the random waveform data management DA converter output that produces, regards it as reference level control power module reference voltage and electric current. Through with arbitrary addition of waveforms to reference voltage and the electric current on, realize the output that superposes of arbitrary ripples on the direct current output. Frequency and the range of arbitrary ripples output have been decided according to the characteristic of each power module owner's converter.
Description
Technical field
This utility model is related to power-supply device field, particularly a kind of DDS Arbitrary Waveform Generators.
Background technology
Generally, when the test related to DC source is carried out, engineer must collect and configure multiple stage instrument, could be complete
Into direct current supply and measuring task.When these complex tasks are performed, multiple stage test instrunment may be simultaneously connected to, so as to increase
The risk of error；For this purpose, engineer may select the automatic test complicated more than manual test, although automatic test task
Manual errors can be reduced, but the research and development engineer write with debugging routine to having worked overloadingly further increases work
Amount.And the appearance of DC source analyser avoids engineer and uses the debugging that complexity is carried out before multiple devices and test.Electricity
The electric current that source analyser passes through 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；, without the need for exploitation control and process of measurement, institute is functional and measures all integrated for DC source analyser
In same equipment, without PC, driver and software, equivalent to the workload related to setting more than 90% is reduced；
Direct current supply and measurement test assignment that user then just can be completed using independent test equipment with 2 day time, using unidirectional current
Source analyser just be able to can be completed in 5 minutes.And it is usual, circuit tester module, oscillograph mould are 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
Kind of random waveform is to be produced to specify the sawtooth waveforms PWM control pulses of waveform to be to need any wave impulse by control module（This is any
Waveform can be square wave（Containing square wave）, sine involve various modulating waves etc.）Generator is producing realization.The circuit module is
The no realization that power module function can be directly affected with reliable and stable performance.
Utility model content
Goal of the invention of the present utility model is to stability for the sawtooth wave generating circuit in DC source analyser
Demand, there is provided a kind of working stability, it is adaptable to the DDS Arbitrary Waveform Generators of particular power module in power analysis instrument.
To achieve these goals, the technical solution adopted in the utility model is：
A kind of DDS Arbitrary Waveform Generators, including the N positions full adder, accumulating register, wave memorizer, the DA that are sequentially connected in series
Transducer and low pass filter；
N positions full adder includes first input end and the second input, and wherein first input end is used for receives frequency control
Signal processed；Second input is used to receive the feedback signal from accumulating register；N positions full adder the first letter of output
Number Y is to accumulating register；
The accumulating register receives reference clock and the first signal Y simultaneously, and is counted according to reference clock and the first signal Y
OPADD value is to the wave memorizer after calculation；
It is stored with various Wave datas by preset address in the wave memorizer, and is specified according to address value output
Waveform；
The D/A converter is used to for specified waveform to be converted to analog waveform by digital waveform；
The low pass filter is used to carry out low-pass filtering to the analog waveform.
In sum, as a result of above-mentioned technical proposal, the beneficial effects of the utility model are：
The DDS Arbitrary Waveform Generators that this utility model is provided can produce random waveform data, the random waveform number that will be produced
According to control D/A converter output, as datum power module reference voltage and electric current are controlled.By by random waveform
It is added on reference voltage and electric current, realizes that any ripple is superimposed output in direct current output.According to each power module primary transform
The characteristic of device determines the frequency and amplitude of any ripple output.
Description of the drawings
Fig. 1 is the theory diagram of the DDS Arbitrary Waveform Generators that this utility model is provided.
Specific embodiment
Below in conjunction with the accompanying drawings, this utility model is described in detail.
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and enforcement
Example, is further elaborated to this utility model.It should be appreciated that specific embodiment described herein is only to explain this
Utility model, is not used to limit this utility model.
Embodiment 1：As shown in figure 1, the present embodiment provides a kind of any ripples of DDS for power analysis instrument power module sending out
Raw device, including the N positions full adder, accumulating register, wave memorizer, D/A converter and the low pass filter that are sequentially connected in series；
N positions full adder includes first input end and the second input, and wherein first input end is used for receives frequency control
Signal processed；Second input is used to receive the feedback signal from accumulating register；N positions full adder the first letter of output
Number Y is to accumulating register；The accumulating register receives reference clock and the first signal Y simultaneously, and according to reference clock and the
OPADD value is to the wave memorizer after one signal Y calculating；It is stored with by preset address in the wave memorizer various
Wave data, and waveform is specified according to address value output；The D/A converter is used to be turned specified waveform by digital waveform
It is changed to analog waveform；The low pass filter is used to carry out low-pass filtering to the analog waveform.
Wherein, output waveform fout=K×（fclk/2N）, wherein, K is the frequency control word included in frequency control signal,
Its value is less than 2N- 1, fclkGo out to represent reference clock, its value takes 50kHz between 25kHz ~ 50kHz, in the present embodiment；N
Represent full adder digit, its value between 8 ~ 128bit, N=24bit in the present embodiment.
The DDS Arbitrary Waveform Generators that this utility model is provided can produce random waveform data, the random waveform number that will be produced
According to control D/A converter output, as datum power module reference voltage and electric current are controlled.By by random waveform
It is added on reference voltage and electric current, realizes that any ripple is superimposed output in direct current output.According to each power module primary transform
The characteristic of device determines the frequency and amplitude of any ripple output.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit this utility model
Any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in this utility model
Protection domain within.
Claims (1)
1. a kind of DDS Arbitrary Waveform Generators, it is characterised in that including the N positions full adder, accumulating register, the waveform that are sequentially connected in series
Memorizer, D/A converter and low pass filter；
N positions full adder includes first input end and the second input, and wherein first input end is used for receives frequency control letter
Number；Second input is used to receive the feedback signal from accumulating register；N positions full adder exports the first signal Y
To accumulating register；
The accumulating register receives reference clock and the first signal Y simultaneously, and after being calculated according to reference clock and the first signal Y
OPADD value is to the wave memorizer；
It is stored with various Wave datas by preset address in the wave memorizer, and ripple is specified according to address value output
Shape；
The D/A converter is used to for specified waveform to be converted to analog waveform by digital waveform；
The low pass filter is used to carry out low-pass filtering to the analog waveform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621126582.9U CN206096207U (en) | 2016-10-17 | 2016-10-17 | Arbitrary wave generator of DDS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621126582.9U CN206096207U (en) | 2016-10-17 | 2016-10-17 | Arbitrary wave generator of DDS |
Publications (1)
| Publication Number | Publication Date |
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| CN206096207U true CN206096207U (en) | 2017-04-12 |
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| CN201621126582.9U Active CN206096207U (en) | 2016-10-17 | 2016-10-17 | Arbitrary wave generator of DDS |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443095A (en) * | 2016-10-17 | 2017-02-22 | 成都前锋电子仪器有限责任公司 | DDS arbitrary wave generator |
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2016
- 2016-10-17 CN CN201621126582.9U patent/CN206096207U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443095A (en) * | 2016-10-17 | 2017-02-22 | 成都前锋电子仪器有限责任公司 | DDS arbitrary wave generator |
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