CN202309628U - Digital isolating high-voltage direct-current power amplifying module and power amplifier - Google Patents
Digital isolating high-voltage direct-current power amplifying module and power amplifier Download PDFInfo
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- CN202309628U CN202309628U CN2011203791637U CN201120379163U CN202309628U CN 202309628 U CN202309628 U CN 202309628U CN 2011203791637 U CN2011203791637 U CN 2011203791637U CN 201120379163 U CN201120379163 U CN 201120379163U CN 202309628 U CN202309628 U CN 202309628U
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Abstract
The utility model relates to a digital isolating high-voltage direct-current power amplifying module and an amplifier. The digital isolating high-voltage direct-current power amplifying module comprises a first digital isolator, a second digital isolator, a first digital-analog converter, a second digital-analog converter, a first I/V (Current/Voltage) converter, a second I/V converter, a high-voltage operational amplifier and an MOS (Metal Oxide Semiconductor) transistor, wherein the first digital isolator and the second digital isolator are used for electrically isolating input digital signals from output digital signals; the first digital-analog converter and the second digital-analog converter are used for converting the digital signals into analog signals; the first I/V converter and the second I/V converter are used for converting current signals into voltage signals; the high-voltage operational amplifier is used for outputting a high-voltage signal; the MOS transistor is used for increasing output current; the first digital-analog converter is provided with a first reference voltage input end; the second digital isolator, the second digital-analog converter, the second I/V converter and the first reference voltage input end are connected in sequence; the first digital isolator, the first digital-analog converter, the first I/V converter, the high-voltage operational amplifier and the MOS transistor are connected in sequence; and output ends of a plurality of digital isolating high-voltage direct-current power amplifying modules are connected in series to form the power amplifier. The digital isolating high-voltage direct-current power amplifying module has high load capacity and can realize high voltage output of electrically isolated input and output.
Description
Technical field
The utility model relates to a kind of power amplifier, is specifically related to a kind of digital isolated high-voltage direct current power amplification module; The utility model also relates to the power amplifier that adopts this numeral isolated high-voltage direct current power amplification module.
Background technology
Existing application is in the power amplifier of high-precision hvdc circuit, and the amplitude of the voltage signal of its output is little and restricted, and power output is little, and its cost is very high, is difficult for buying and uses.
The utility model content
The utility model technical problem to be solved is: a kind of digital isolated high-voltage direct current power amplification module is provided, can realizes importing and exporting the high voltage output of electrical isolation.
Another purpose of the utility model is: a kind of digital isolated high-voltage amplidyne is provided, realizes that the more high voltage behind the digital isolated high-voltage direct current power amplification module of series connection is exported.
The technical problem of this practical technique mainly solves through following scheme: a kind of digital isolated high-voltage direct current power amplification module; It is characterized in that: it comprises first, second digital isolator that is used for the isolation of input and output electrical digital signal; Be used for digital signal is converted into first, second digital to analog converter of analog signal; Be used for current signal is converted into first, second I/V transducer of voltage signal; Be used to export the high pressure amplifier of high-voltage signal, be used to strengthen the metal-oxide-semiconductor of output current; Said first digital to analog converter has first reference voltage input terminal; Said second digital isolator, second digital to analog converter, the 2nd I/V transducer, first reference voltage input terminal link to each other successively, and said first digital isolator, first digital to analog converter, an I/V transducer, high pressure amplifier, metal-oxide-semiconductor link to each other successively;
Supplied with digital signal is divided into two-way and imports said first digital isolator and said second digital isolator respectively; By said second digital isolator supplied with digital signal is isolated back entering second digital to analog converter and convert analog signal into, convert adjustable reference voltage signal into by said the 2nd I/V transducer again and export first reference voltage input terminal to; By said first digital isolator supplied with digital signal is isolated back entering first digital to analog converter and convert analog signal into; Convert voltage signal into by a said I/V transducer again and get into the high pressure amplifier and be enlarged into the high tension voltage signal, export after getting into the electric current that metal-oxide-semiconductor strengthens the high tension voltage signal at last.
On the basis of the above, the utility model can be done following improvement:
Said high pressure amplifier has the negative feedback end, and this negative feedback end links to each other with the signal output part of said digital isolated high-voltage direct current power amplification module.
Said first, second digital isolator of the utility model all adopts the ADUM1300 cake core.
Said first, second digital to analog converter of the utility model all adopts the AD5545 cake core.
Said first, second I/V transducer of the utility model all adopts the OPA2277 cake core.
Another purpose of the utility model solves through following scheme: a kind of power amplifier that adopts above-mentioned digital isolated high-voltage direct current power amplification module; It comprises at least two digital isolated high-voltage direct current power amplification modules, is connected in series between the output of each digital isolated high-voltage direct current power amplification module.
Beneficial effect with respect to prior art the utility model:
1, first, second isolator that adopts can effectively improve the resolution of output, can improve the precision of output through adjustable reference voltage; Power output is big, and is with low cost;
2, adopt the method for the digital isolated high-voltage direct current power amplification module of series connection can reach the adjustable more high voltage of output high accuracy, operate simple and easy, good stability.
Description of drawings
Fig. 1 is the principle schematic of the utility model numeral isolated high-voltage direct current power amplification module;
Fig. 2 is the circuit diagram of the utility model numeral isolated high-voltage direct current power amplification module HVDC output part;
Fig. 3 is the circuit diagram of the utility model numeral isolated high-voltage direct current power amplification module reference voltage output;
Fig. 4 is the principle schematic of the utility model numeral isolated high-voltage amplidyne.
The practical implementation method
Below in conjunction with accompanying drawing the utility model is further described:
As shown in Figure 1, the digital isolated high-voltage direct current power amplification module of the utility model comprises HVDC output part and reference voltage output.HVDC output part comprises the first digital isolator U1 that is used for the isolation of input and output electrical digital signal; The first driver U2 that is used for the driving force of enhancing signal; Be used for digital signal is converted into the first digital to analog converter U3 of analog signal; Be used for current signal is converted into an I/V transducer U4 of voltage signal, be used to export the high pressure amplifier U5 of high-voltage signal, be used to strengthen the metal-oxide-semiconductor U6 of output current; The first digital isolator U1, the first driver U2, the first digital to analog converter U3, an I/V transducer U4, high pressure amplifier U5, metal-oxide-semiconductor U6 connect successively; The reference voltage output comprises the second digital isolator U7 that is used for the isolation of input and output electrical digital signal; The second driver U8 that is used for the driving force of enhancing signal; Be used for digital signal is converted into the second digital to analog converter U9 of analog signal, be used for current signal is converted into the 2nd I/V transducer U10 of voltage signal; The second digital isolator U7, the second driver U8, the second digital to analog converter U9, the 2nd I/V transducer U10 connect successively.
Wherein, First digital to analog converter has first reference voltage input terminal; The reference voltage output is to carry out electrical isolation to digital signal importation and output through the second digital isolator U7; Drive the second digital to analog converter U7 through the second driver U8 then; Analog current signal of second digital to analog converter U7 output is done first reference voltage input terminal of adjustable reference voltage to the first a D/A converter module U3 of output after the I/V conversion through the 2nd I/V transducer U10, as the reference of the first digital to analog converter U3; HVDC output part is also to be to isolate after the digital signal of input through the first driver U2 through the first digital isolator U1; Import the first digital to analog converter U3 again after driving reinforcement; The current signal of first digital to analog converter U3 output carries out becoming after the I/V conversion input analog signal Uin of high pressure amplifier U5 through an I/V transducer U5; Input high pressure amplifier U5 carries out ratio and amplifies back output driven MOS pipe U6, exports as the final power signal after the output of metal-oxide-semiconductor U6 increasing electric current.
The course of work of this digital isolated high-voltage direct current power amplification module is: be divided into two-way by the supplied with digital signal of outside input and import said first digital isolator and said second digital isolator respectively; By said second digital isolator supplied with digital signal is isolated back entering second digital to analog converter and convert analog signal into, convert adjustable reference voltage signal into by said the 2nd I/V transducer again and export first reference voltage input terminal to; By said first digital isolator supplied with digital signal is isolated back entering first digital to analog converter and convert analog signal into; Convert voltage signal into by a said I/V transducer again and get into the high pressure amplifier and be enlarged into the high tension voltage signal, export after getting into the electric current that metal-oxide-semiconductor strengthens the high tension voltage signal at last.
Shown in Fig. 2 a, Fig. 3 a; The chip that first, second isolator adopts the ADUM1300 of ADI company to isolate as numeral, this isolator is low in energy consumption, pulse-width distortion low (＜2ns); Isolation voltage is 2500V; Transmission speed is 1M/10M/90Mbps, transmission delay 32ns, nothing that the transmission that its high electric property has guaranteed high-speed digital signal is undistorted time-delay; First, second driver adopts the 74HCT573 cake core; Shown in Fig. 2 b, Fig. 3 b, first, second digital to analog converter adopts 16 D/A chip AD5545; The output of numeral isolating chip ADUM1300 drives one 16 D/A chip AD5545 through chip for driving 74HCT573; This chip has second reference voltage input terminal; AD5545 is a kind of high-accuracy, twin-channel 16 DAC devices that ADI company produces; This designs adopts the 5V single power supply, has the bipolarity fan-out capability of the highest ± 15V.Shown in Fig. 2 c; For setting up the output current of full scale; The second digital to analog converter U9 need use an outside reference voltage source; The reference data voltage source of AD5545 chip provides with the high-precision reference chip REF102 that a slice TI company produces, and the final output REF10V of Fig. 2 c is that voltage is imported second reference voltage input terminal of second digital to analog converter as a reference, shown in Fig. 2 b; The 2nd I/V transducer has adopted the high accuracy of a slice TI, the amplifier OPA2277 of low drift, and the final output REFU1 shown in Fig. 2 b is first reference voltage input terminal of importing first digital to analog converter as a reference voltage.
Shown in Fig. 3 b, the same employing with a same principle of Fig. 1 of the input analog signal Uin of the input of the high pressure amplifier of the utility model realized, so just guaranteed the ease of Use property of principle part,
In the HVDC output part; The reference voltage of first D/A converter module is to modulate through the output circuit of reference voltage; The resolution of the analog quantity of the input of so just feasible input high pressure amplifier has had one times raising, and the voltage signal that also makes HVDC export the final output of part is one has the more power signal of high accuracy, resolution.Shown in Fig. 3 c; The high pressure amplifier adopts 3583 chips; It has the negative feedback input, and the signal output part Uout of digital isolated high-voltage direct current power amplification module links to each other with the negative feedback input through 300K/0.01% precision resister R9, R10, and this negative feedback input also is connected to simulation ground through 20K/0.01% precision resister R7; No. 3 pin of high pressure amplifier chip are connected to No. 4 pin of high pressure amplifier chip through adjustable resistance R8; No. 3 pin and No. 4 pin are bias voltage adjustment pin, can regulate the output zero-bit of high pressure amplifier through adjusting adjustable resistance R8, and the final output current maximum of this high pressure amplifier U5 can only arrive 75mA; Load capacity is smaller, and therefore the output access metal-oxide-semiconductor in the high pressure amplifier strengthens output current as the final mode of exporting.
The voltage signal amplitude of the final output of this digital isolated high-voltage direct current power amplification module is Uout=(R8+R9) * Uin/R7.
As shown in Figure 4; Adopt the power amplifier of above-mentioned digital isolated high-voltage direct current power amplification module; It comprises N digital isolated high-voltage direct current power amplification module, N=1～+ ∞, be connected in series between the output of each digital isolated high-voltage direct current power amplification module.
The execution mode of the utility model is not limited thereto; According to foregoing; Ordinary skill knowledge and customary means according to this area; Do not breaking away under the above-mentioned basic fundamental thought of the utility model prerequisite, equivalent modifications, replacement or change that the utility model can also be made other various ways all can realize the utility model purpose.
Claims (6)
1. digital isolated high-voltage direct current power amplification module; It is characterized in that: it comprises first, second digital isolator that is used for the isolation of input and output electrical digital signal; Be used for digital signal is converted into first, second digital to analog converter of analog signal; Be used for current signal is converted into first, second I/V transducer of voltage signal, be used to export the high pressure amplifier of high-voltage signal, be used to strengthen the metal-oxide-semiconductor of output current; Said first digital to analog converter has first reference voltage input terminal; Said second digital isolator, second digital to analog converter, the 2nd I/V transducer, first reference voltage input terminal link to each other successively, and said first digital isolator, first digital to analog converter, an I/V transducer, high pressure amplifier, metal-oxide-semiconductor link to each other successively;
Supplied with digital signal is divided into two-way and imports said first digital isolator and said second digital isolator respectively; By said second digital isolator supplied with digital signal is isolated back entering second digital to analog converter and convert analog signal into, convert adjustable reference voltage signal into by said the 2nd I/V transducer again and export first reference voltage input terminal to; By said first digital isolator supplied with digital signal is isolated back entering first digital to analog converter and convert analog signal into; Convert voltage signal into by a said I/V transducer again and get into the high pressure amplifier and be enlarged into the high tension voltage signal, export after getting into the electric current that metal-oxide-semiconductor strengthens the high tension voltage signal at last.
2. digital isolated high-voltage direct current power amplification module according to claim 1, it is characterized in that: said high pressure amplifier has the negative feedback end, and this negative feedback end links to each other with the signal output part of said digital isolated high-voltage direct current power amplification module.
3. digital isolated high-voltage direct current power amplification module according to claim 1 and 2, it is characterized in that: said first, second digital isolator all adopts the ADUM1300 cake core.
4. digital isolated high-voltage direct current power amplification module according to claim 1 and 2, it is characterized in that: said first, second digital to analog converter all adopts the AD5545 cake core.
5. digital isolated high-voltage direct current power amplification module according to claim 1 and 2 is characterized in that: said first, second I/V transducer all adopts the 0PA2277 cake core.
6. power amplifier that adopts above-mentioned digital isolated high-voltage direct current power amplification module; It is characterized in that: it comprises at least two digital isolated high-voltage direct current power amplification modules, is connected in series between the output of each digital isolated high-voltage direct current power amplification module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203791637U CN202309628U (en) | 2011-09-29 | 2011-09-29 | Digital isolating high-voltage direct-current power amplifying module and power amplifier |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011203791637U CN202309628U (en) | 2011-09-29 | 2011-09-29 | Digital isolating high-voltage direct-current power amplifying module and power amplifier |
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| CN202309628U true CN202309628U (en) | 2012-07-04 |
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| CN2011203791637U Expired - Lifetime CN202309628U (en) | 2011-09-29 | 2011-09-29 | Digital isolating high-voltage direct-current power amplifying module and power amplifier |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104638500A (en) * | 2013-11-13 | 2015-05-20 | 中国科学院沈阳计算技术研究所有限公司 | High-voltage receiving control device for high-power CO2 (carbon dioxide) lasers |
| CN108649952A (en) * | 2018-04-12 | 2018-10-12 | 无锡天和电子有限公司 | A kind of four-way digitlization isolated amplifier |
| CN108664439A (en) * | 2018-05-15 | 2018-10-16 | 北京机械设备研究所 | A kind of analogue quantity output circuit device of number isolation |
| CN113437854A (en) * | 2021-07-12 | 2021-09-24 | 国网河北省电力有限公司营销服务中心 | AC/DC superposed voltage source |
-
2011
- 2011-09-29 CN CN2011203791637U patent/CN202309628U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104638500A (en) * | 2013-11-13 | 2015-05-20 | 中国科学院沈阳计算技术研究所有限公司 | High-voltage receiving control device for high-power CO2 (carbon dioxide) lasers |
| CN104638500B (en) * | 2013-11-13 | 2017-11-28 | 中国科学院沈阳计算技术研究所有限公司 | For high power CO2The high pressure receiving control device of laser |
| CN108649952A (en) * | 2018-04-12 | 2018-10-12 | 无锡天和电子有限公司 | A kind of four-way digitlization isolated amplifier |
| CN108649952B (en) * | 2018-04-12 | 2024-02-27 | 无锡天和电子有限公司 | Four-channel digital isolation amplifier |
| CN108664439A (en) * | 2018-05-15 | 2018-10-16 | 北京机械设备研究所 | A kind of analogue quantity output circuit device of number isolation |
| CN108664439B (en) * | 2018-05-15 | 2021-10-15 | 北京机械设备研究所 | Analog quantity output circuit device with digital isolation |
| CN113437854A (en) * | 2021-07-12 | 2021-09-24 | 国网河北省电力有限公司营销服务中心 | AC/DC superposed voltage source |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |