CN101000932A - Circuit for realizing large negative of APD bias voltage - Google Patents
Circuit for realizing large negative of APD bias voltage Download PDFInfo
- Publication number
- CN101000932A CN101000932A CNA2006101306147A CN200610130614A CN101000932A CN 101000932 A CN101000932 A CN 101000932A CN A2006101306147 A CNA2006101306147 A CN A2006101306147A CN 200610130614 A CN200610130614 A CN 200610130614A CN 101000932 A CN101000932 A CN 101000932A
- Authority
- CN
- China
- Prior art keywords
- voltage
- conversion module
- links
- anode
- output
- 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.)
- Granted
Links
Images
Landscapes
- Dc-Dc Converters (AREA)
Abstract
This invention relates to the field of large-scale negative voltage adjustment for APD reverse voltage. The technical proposal: the input terminal anode of buck levitation isolation ground DC/DC transformation module connects with the system power supply +V, and the cathode connects with the system ground. The output anode of the buck module connects with the input anode of a boost DC/DC transformation module, and simultaneously the power supply anode of the control circuit regulating this DC/DC voltage, and so on. This invention may solve two problems: the low-noise negative voltage transformation problem when lower than -36V, and the negative voltage can be controlled within the scope of higher than 80V with the control signals that is analog or digital changing from 0 V to 5V. This method takes advantage of changing the electric potential reference point, to get the effect of using the low voltage control loop to obtain the reverse large-scale voltage transformation.
Description
Technical field
The present invention relates to the field that APD bias voltage large-scale negative is adjusted.
Background technology
In the optical time domain reflection analyzer, APD biasing requires negative bias (as Fig. 1), and general voltage-more than the 20V in-100V scope, the bias voltage of APD the best is generally at 0.9V
BR(V
BRBe puncture voltage), too high biasing may cause that the APD pipe punctures, and crosses low bias voltage APD is operated under the optimum signal to noise ratio condition, systematic function is descended, simultaneously the V of APD
BRTemperature influence is very big, temperature rising V
BRRise temperature decline V
BRDescend, therefore use fixed biasing circuit method can't adapt to APD under the wide temperature and be operated in requirement under the optimum signal-noise ratio condition.
Summary of the invention
The objective of the invention is to solve fixed biasing circuit method and can't adapt to APD under the wide temperature and be operated in problem under the optimum signal-noise ratio condition, a kind of circuit of the APD of realization bias voltage large-scale negative is provided.
Technical scheme of the present invention is: a kind of realization APD negative polarity can be adjusted bias voltage circuit on a large scale, as Fig. 2, the voltage-dropping type input anode connected system power supply+V of DC/DC conversion module isolator that suspends, the negative pole of input with systematically link to each other; Voltage-dropping type suspends isolator, and the output head anode of DC/DC conversion module is connected with the input of one step-up DC/DC conversion module is anodal, link to each other with the feeder ear of the control loop of regulating and control this DC/DC voltage is anodal simultaneously, voltage-dropping type suspends isolator that the negative pole of DC/DC conversion module output links to each other with the ground of step-up DC/DC conversion module, links to each other with the ground of described control loop simultaneously; The output head anode of described step-up DC/DC conversion module links to each other with the input anode of a diode multiplication of voltage network, the output of described control loop links to each other with the feedback end of step-up DC/DC conversion module, with the output head anode of described diode multiplication of voltage network with systematically link to each other, the output head anode of described diode multiplication of voltage network links to each other with the sample resistance of two series connection, the common port of series resistance links to each other with the input of described control loop, and the other end of series resistance suspends isolator with described voltage-dropping type that the negative pole of output end of DC/DC conversion module links to each other; With respect to systematically, the suspend voltage of the negative pole of output end of DC/DC conversion module isolator of described voltage-dropping type is-V.
The described voltage-dropping type input anode connected system power supply+V of DC/DC conversion module isolator that suspends is generally from+8V to+18V.
System's power supply is+V, with suspension insulating power supply circuit conversion+5V current supply circuit, this circuit can be adjusting and voltage-reduction switch DC/DC isolated DC stabilized voltage power supply, zero reference of input stage and output stage is not altogether, with output stage+5V is feeder ear, carry out secondary DC/DC conversion, output 1-20V direct current, again through diode multiplication of voltage output+5～+ the 100V direct voltage, this voltage changes the DC/DC reference voltage behind the control loop of sample resistance input 5V power supply, thereby the regulation and control output voltage is changed to+5V～+ a certain voltage between 100V, because suspending with transformation loop, system's power supply isolates, therefore, if with the high potential point of output voltage 2 with systematically link to each other, relative system ground can obtain-V, promptly-and 5V～-the interior voltage of 100V scope.
Beneficial effect of the present invention:
The present invention can solve 2 technical barriers:
1. be lower than-the low-noise negative pressure transformation problem of 36V.Power supply is the low-voltage malleation in general instrument or the equipment, how to realize being transformed to by low malleation and surpass-36V low pressure, conversion pressure reduction seldom has integrated circuit directly to finish more than 40V, if the DC/DC switching mode circuit with Direct Transform realizes that circuit ripple and noise are all higher.
2. this negative pressure can be adjustable in being higher than the 80V scope, and control signal is the analog or digital signal that changes in normal 0～5V, if negative pressure is regulated and control on a large scale, circuit for regulating and controlling must be powered with the negative pressure that is higher than modification scope, and this is again a contradiction, and promptly we will obtain the negative pressure of one-80V, to generate earlier one＜-supply power voltage of 80V regulates and control again, when if modification scope is very big, efficient is just very poor, even can not realize.
This method utilization changes the method for potential reference point, has solved with the low-voltage control loop and has obtained oppositely the effect of voltage transformation on a large scale.
Description of drawings
Fig. 1: the APD schematic diagram (V is the APD bias voltage) of setovering
Fig. 2: use the suspended power supply design to realize the method schematic diagram of APD bias voltage large-scale negative
The schematic diagram of the temperature self-compensation output range of negative pressure of Fig. 3: embodiment 1
The design sketch of the temperature self-compensation output range of negative pressure of Fig. 4: embodiment 1
The schematic diagram of the program control compensation output range of negative pressure of Fig. 5: embodiment 2
The design sketch of the program control compensation output range of negative pressure of Fig. 6: embodiment 2
Embodiment 1
The method of temperature self-compensation output range of negative pressure: as Fig. 3, in this example, the detected value addition of output voltage sampling method and temperature compensation resistance obtains error signal by the synthetic F that gives DC/DC of adder
BEnd (feedback end), thus reach the temperature variant requirement of output negative pressure-V.When the temperature rising, output voltage descends; Temperature descends, and output voltage rises.As long as reasonably adjusting the network gain of the parameter of sample resistance R1, R2 and temperature compensation resistance R 3, R4 and humidifier can reach in the scope that temperature adapts to-V is in 0.9V all the time
BRThe requirement of point.Consult Fig. 4 curve.
Embodiment 2
The method of program control compensation output range of negative pressure: as Fig. 5, in this example, change the adder control input end into DAC control voltage by temperature compensation resistance, because DAC is digital control, and numerical control system is with system reference ground, so the input digit amount of DAC is isolated with photoelectrical coupler.In this example ,-V controls by the digital quantity of system controller.As Fig. 6, the method can be exported by more flexible control-V, makes it the value of meeting the requirements of.
Claims (2)
1. realize that the APD negative polarity can adjust bias voltage circuit on a large scale for one kind, it is characterized in that: the voltage-dropping type input anode connected system power supply+V of DC/DC conversion module isolator that suspends, the negative pole of input with systematically link to each other; Voltage-dropping type suspends isolator, and the output head anode of DC/DC conversion module is connected with the input of one step-up DC/DC conversion module is anodal, link to each other with the feeder ear of the control loop of regulating and control this DC/DC voltage is anodal simultaneously, voltage-dropping type suspends isolator that the negative pole of DC/DC conversion module output links to each other with the ground of step-up DC/DC conversion module, links to each other with the ground of described control loop simultaneously; The output head anode of described step-up DC/DC conversion module links to each other with the input anode of a diode multiplication of voltage network, the output of described control loop links to each other with the feedback end of step-up DC/DC conversion module, with the output head anode of described diode multiplication of voltage network with systematically link to each other, the output head anode of described diode multiplication of voltage network links to each other with the sample resistance of two series connection, the common port of series resistance links to each other with the input of described control loop, and the other end of series resistance suspends isolator with described voltage-dropping type that the negative pole of output end of DC/DC conversion module links to each other; With respect to systematically, the suspend voltage of the negative pole of output end of DC/DC conversion module isolator of described voltage-dropping type is-V.
2. realization APD negative polarity as claimed in claim 1 can be adjusted bias voltage circuit on a large scale, it is characterized in that: the described voltage-dropping type input anode connected system power supply+V of DC/DC conversion module isolator that suspends, and generally from+8V to+18V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101306147A CN100414718C (en) | 2006-12-27 | 2006-12-27 | Circuit for realizing large negative of APD bias voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101306147A CN100414718C (en) | 2006-12-27 | 2006-12-27 | Circuit for realizing large negative of APD bias voltage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101000932A true CN101000932A (en) | 2007-07-18 |
| CN100414718C CN100414718C (en) | 2008-08-27 |
Family
ID=38692809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101306147A Expired - Fee Related CN100414718C (en) | 2006-12-27 | 2006-12-27 | Circuit for realizing large negative of APD bias voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100414718C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103135651A (en) * | 2013-01-25 | 2013-06-05 | 青岛海信宽带多媒体技术有限公司 | Double closed-loop based avalanche photo diode (APD) reverse bias voltage control circuit and method |
| CN104394340A (en) * | 2014-11-21 | 2015-03-04 | 南京大学 | Smart APD array reading device and method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000171295A (en) * | 1998-12-03 | 2000-06-23 | Nec Corp | Apd bias circuit |
| CN2790003Y (en) * | 2005-04-15 | 2006-06-21 | 海信集团有限公司 | APD device work protection circuit |
-
2006
- 2006-12-27 CN CNB2006101306147A patent/CN100414718C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103135651A (en) * | 2013-01-25 | 2013-06-05 | 青岛海信宽带多媒体技术有限公司 | Double closed-loop based avalanche photo diode (APD) reverse bias voltage control circuit and method |
| CN103135651B (en) * | 2013-01-25 | 2016-01-20 | 青岛海信宽带多媒体技术有限公司 | Based on APD reverse bias voltage control circuit and the control method of two close cycles |
| CN104394340A (en) * | 2014-11-21 | 2015-03-04 | 南京大学 | Smart APD array reading device and method |
| CN104394340B (en) * | 2014-11-21 | 2017-08-15 | 南京大学 | Intelligent APD array read-out device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100414718C (en) | 2008-08-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101461983B (en) | Voltage-regulating converter for power of defibrillation and pacing apparatus | |
| CN101483345B (en) | Control method for photovoltaic grid connection inverter with wide input range | |
| CN108011583B (en) | Device for inhibiting PID effect | |
| CN203205946U (en) | Charging management circuit and system | |
| CN102014544B (en) | LED (Light-Emitting Diode) lamp driving circuit | |
| CN102638179A (en) | Efficiency optimized power converter with dual voltage power factor correction | |
| CN105515382A (en) | Voltage stability control circuit of wireless power supply system | |
| CN101060753B (en) | A drive circuit for adjusting backlight brightness | |
| CN103516219A (en) | A control circuit of a direct current power supply module | |
| CN202711109U (en) | Compensation circuit for remote-end voltage stabilization by using feedback loop | |
| CN100414718C (en) | Circuit for realizing large negative of APD bias voltage | |
| CN108767842B (en) | A kind of direct-flow air conditioner power supply system of photovoltaic and electrical network complementation | |
| CN104682702B (en) | Power circuit and electronic product | |
| CN101777846B (en) | System and method for controlling switch power supply | |
| CN103516218B (en) | Power supply device | |
| CN205336116U (en) | Steady voltage control circuit of wireless power supply system | |
| CN217282710U (en) | Power tracking circuit of switching power supply converter | |
| CN105305832A (en) | Circuit for realizing multi-path positive and negative high-voltage output | |
| CN113381608B (en) | Direct-current bidirectional source-mounted equipment switching control circuit | |
| CN105116950A (en) | High-efficiency and low-ripple numerical control DC voltage stabilizing power source | |
| CN205212707U (en) | Realize positive and negative high voltage output's of multichannel circuit | |
| CN109538458B (en) | Solar water pump adjusting device and control method thereof | |
| CN208174556U (en) | A kind of fast-response magnet power supply based on high power up amps | |
| CN112803237B (en) | High-efficiency wide-working-voltage semiconductor laser constant-current driving circuit | |
| CN117175932B (en) | Photovoltaic intelligent variable structure power socket |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080827 Termination date: 20151227 |
|
| EXPY | Termination of patent right or utility model |