CN103973086A - Ripple wave suppressor circuit of program-controlled direct-current power supply - Google Patents
Ripple wave suppressor circuit of program-controlled direct-current power supply Download PDFInfo
- Publication number
- CN103973086A CN103973086A CN201410189133.8A CN201410189133A CN103973086A CN 103973086 A CN103973086 A CN 103973086A CN 201410189133 A CN201410189133 A CN 201410189133A CN 103973086 A CN103973086 A CN 103973086A
- Authority
- CN
- China
- Prior art keywords
- operational amplifier
- power supply
- capacitor
- resistance
- power
- 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
Landscapes
- Amplifiers (AREA)
- Power Conversion In General (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The invention discloses a ripple wave suppressor circuit of a program-controlled direct-current power supply. According to the ripple wave suppressor circuit of the program-controlled direct-current power supply, an active low-pass filter and a passive filter are connected between a positive output line of the direct-current power supply and a negative output line of the direct-current power supply after a capacitor C3 is connected between the positive output line of the direct-current power supply and the negative output line of the direct-current power supply, the active low-pass filter comprises an N-channel high-power MOSFET V1, a front-stage operational amplifier N1:1 with a dynamic compensation function and a rear-stage operational amplifier N1:2 with a dynamic compensation function, and the passive filter comprises an inductor L1 and a capacitor C1. According to the ripple wave suppressor circuit of the program-controlled direct-current power supply, high-frequency and low-frequency ripple wave noise output by the power supply can be lowered, the dynamic response performance can be improved, and the output precision and the stability are improved. The front-stage and rear-stage synchronous tracking control is adopted, accurate adjustment enabling the voltage difference to be low can be achieved, and the conversion efficiency of the power supply is effectively improved. As a result, the ripple wave suppressor circuit of the program-controlled direct-current power supply has high application value in the aspect of design of high-precision program-controlled power supplies.
Description
Technical field
The present invention relates to programmable power supply field, specifically a kind of Ripple Suppression device circuit of programme-controlled dc power.
Background technology
Programme-controlled dc power is requisite equipment in Auto-Test System.In modernization of the country process, all kinds of Auto-Test Systems are arisen at the historic moment, and directly serve the civil areas such as research and production, and the demand of programme-controlled dc power system is being increased equally.In all kinds of Auto-Test Systems, in base station testing system, the system-level automatic detecting platform of electronics, all need high accuracy, the power supply of low noise programmable power supply, and require voltage programmable.Programme-controlled dc power is the ideal equipment that bias power is provided in automatic test environment and parts or final products is provided to excitation, is the tester of test macro indispensability.Along with the quickening of force modernization's process, require also increasingly strict to system direct current supply, particularly in the analog signal application of radio-frequency (RF) transceiver, voicefrequency circuit and the analog integrated circuit processing of the communications field, very high to power supply precision and Ripple Noise index request, traditional high efficiency switch mode power cannot meet its instructions for use.
The following two kinds of voltage stabilizing schemes of the normal employing of current high-precision programme-controlled dc power: the two-step scheme of 1, linear power supply voltage stabilizing 2, the pre-voltage stabilizing of switch and linear voltage stabilization.Voltage stability and the laod stability of linear power supply voltage stabilizing scheme are high, and output ripple is very little, and the transient response speed of circuit is very fast, the low noise requirement of the high accuracy that is content with very little.But owing to adopting the larger Industrial Frequency Transformer of volume and weight, operating frequency is the power frequency below 100Hz, so will reduce peak one peak value of the ripple voltage in output voltage, just must have the filter capacitor of larger capacity.Meanwhile, power adjustment pipe is operated in the linear amplification region of transistors characteristics curve, and the loss of power transistor self is larger, must increase larger fin.In addition, line voltage accommodation is narrow, and the each harmonic that linear power supply transformer and rectifier form is large, easily affects the work of low-frequency noise sensitive circuit.The scheme that adopts the pre-voltage stabilizing of switch to combine with linear voltage stabilization, combine the advantage of Switching Power Supply and linear power supply, prime Switching Power Supply has advantages of that volume is little, efficiency is high, can realize the requirement of power supply miniaturization, rear class adopts the linear voltage-stabilizing circuit of response fast, can effectively reduce output noise, improve voltage accuracy.But in order to obtain good fast-response energy, the certain input and output pressure reduction of the essential guarantee of rear class voltage stabilizing circuit.Meanwhile, in the time that program control output voltage changes, front and back level cannot realize good synchronous tracking adjustment, and therefore, prime often adopts fixed voltage output, and while causing low-voltage output, rear class voltage stabilizing circuit power consumption is larger, cannot further reduce the loss of power supply.For obtaining higher conversion efficiency, need to adopt new ripple suppression circuit.
Summary of the invention
The object of this invention is to provide a kind of Ripple Suppression device circuit of programme-controlled dc power, the problem existing to solve prior art.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of Ripple Suppression device circuit of programme-controlled dc power, comprise that DC power supply just, negative pole output line, it is characterized in that: DC power supply just, between negative pole output line, be connected to after capacitor C 3, access again active low-pass filter, passive filter, described active low-pass filter comprises N channel high power MOSFET pipe V1, there is prime operational amplifier N1:1 and the rear class operational amplifier N1:2 of dynamic compensation function, passive filter comprises inductance L 1 and capacitor C 1, wherein inductance L 1 accesses on DC power cathode output line, capacitor C 1 one end is connected with inductance L 1 one end, capacitor C 1 other end access DC power anode output line, the in-phase input end of described prime operational amplifier N1:1 is connected with DC power anode output line by resistance R 2, the in-phase input end of prime operational amplifier N1:1 is also by resistance R 1 ground connection, the inverting input of prime operational amplifier N1:1 is by resistance R 3 and inductance L 1, between capacitor C 1, connect, the inverting input of prime operational amplifier N1:1 is also connected with the output of prime operational amplifier N1:1 by resistance R 4, the output of prime operational amplifier N1:1 is connected with the inverting input of rear class operational amplifier N1:2 by resistance R 6, between the inverting input of resistance R 6 and rear class operational amplifier N1:2, also access reference voltage signal by resistance R 5, the in-phase input end ground connection of rear class operational amplifier N1:2, rear class operational amplifier N1:2 output is connected with the grid of MOSFET pipe V1, on the source electrode access DC power cathode output line of MOSFET pipe V1, one end that the drain electrode of MOSFET pipe V1 is not connected with capacitor C 1 with inductance L 1 connects.
The Ripple Suppression device circuit of described a kind of programme-controlled dc power, is characterized in that: prime operational amplifier N1:1 and resistance R 1-R4 form differential amplifier circuit, and rear class operational amplifier N1:2 forms adder.
The Ripple Suppression device circuit of described a kind of programme-controlled dc power, is characterized in that: inductance L 1 and capacitor C 1 form LC low pass filter.
The focusing on of Ripple Suppression technology ensures, in situation that input and output pressure reduction is lower, to complete good output and dynamically adjust, and realizes high stable, low noise voltage regulation result, obtains high efficiency, high accuracy output-index.The present invention adopts the MOSFET pipe of high precision operating amplifier and high-power N raceway groove to form active low-pass filter, suppresses compared with the ripple of low frequency, can reduce the required output capacitance of dynamic load; Adopt passive LC low pass filter to suppress high frequency electric source ripple and noise.Owing to adjusting pipe and use the N-channel MOS FET pipe of ultralow conducting resistance, compared with traditional PNP Darlington pipe or P channel mosfet, pressure drop voltage significantly reduces, and power-efficient obviously improves.Adopt self adaptation zero compensation, can obtain good transient response performance and stable load regulation.
The present invention adopts the ripple voltage of a kind of Ripple Suppression technology decay prime Switching Power Supply, can realize dynamic response and POL adjustment efficiently fast, obtains the direct current output of ultra low differential pressure and high stable, and that effectively reduces power supply goes out ripple and noise.
The invention has the beneficial effects as follows: prime switch gives voltage stabilizing circuit, through ripple suppression circuit of the present invention, can export low-and high-frequency Ripple Noise by decaying power supplies, improve dynamic response performance, improve output accuracy and stability.Front and back level adopts the synchronous control of following the tracks of, and can realize the accurate adjustment of utmost point low voltage difference, has effectively improved the conversion efficiency of power supply.Therefore, the present invention has good using value in the design of high-precision program control DC power supply.
Brief description of the drawings
Fig. 1 is circuit theory diagrams of the present invention.
Fig. 2 is passive filter optimized circuit of the present invention.
Fig. 3 is passive filter insertion loss simulation curve figure of the present invention.
Embodiment
Shown in Figure 1, a kind of Ripple Suppression device circuit of programme-controlled dc power, comprise that DC power supply just, negative pole output line, DC power supply just, between negative pole output line, be connected to after capacitor C 3, access again active low-pass filter, passive filter, active low-pass filter comprises N channel high power MOSFET pipe V1, there is prime operational amplifier N1:1 and the rear class operational amplifier N1:2 of dynamic compensation function, passive filter comprises inductance L 1 and capacitor C 1, wherein inductance L 1 accesses on DC power cathode output line, capacitor C 1 one end is connected with inductance L 1 one end, capacitor C 1 other end access DC power anode output line, the in-phase input end of prime operational amplifier N1:1 is connected with DC power anode output line by resistance R 2, the in-phase input end of prime operational amplifier N1:1 is also by resistance R 1 ground connection, the inverting input of prime operational amplifier N1:1 is by resistance R 3 and inductance L 1, between capacitor C 1, connect, the inverting input of prime operational amplifier N1:1 is also connected with the output of prime operational amplifier N1:1 by resistance R 4, the output of prime operational amplifier N1:1 is connected with the inverting input of rear class operational amplifier N1:2 by resistance R 6, between the inverting input of resistance R 6 and rear class operational amplifier N1:2, also access reference voltage signal by resistance R 5, the in-phase input end ground connection of rear class operational amplifier N1:2, rear class operational amplifier N1:2 output is connected with the grid of MOSFET pipe V1, on the source electrode access DC power cathode output line of MOSFET pipe V1, one end that the drain electrode of MOSFET pipe V1 is not connected with capacitor C 1 with inductance L 1 connects.
Prime operational amplifier N1:1 and resistance R 1-R4 form differential amplifier circuit, and rear class operational amplifier N1:2 forms adder.
Inductance L 1 and capacitor C 1 form LC low pass filter.
Circuit theory diagrams of the present invention as shown in Figure 1.In figure, form active low-pass filter by operational amplifier N1 and peripheral element and high-power MOSFET tube V1 thereof, for suppressing the power supply ripple of lower frequency; The passive filter being made up of L1 and C1 is for suppressing power supply ripple and the noise of upper frequency.
In the design of active filter, for the common-mode noise of Inhibitory signal, output voltage adopts differential amplification sampling, obtain detectable voltage signals Vmon, after the voltage reference signal of this signal and DAC output relatively amplifies, obtain error signal, drive the MOSFET pipe V1 that adjusts pipe as power, maintain the stable of output voltage under different loads condition by adjusting output current.The present invention adopts the extremely low N-channel MOS FET of output impedance as adjusting pipe, compared with traditional transistor and P channel mosfet, can effectively fall low drop-out voltage, improves regulated efficiency.
In order to keep low noise, response fast, under the prerequisite of low-power consumption, the Power Supply Rejection Ratio improving, need to improve the open-loop gain of loop, its the most direct method is exactly the gain that improves error amplifier, and therefore the present invention adopts two stage amplifer as error amplifier, can obtain loop gain more than 30dB.Consider the problem of the stability of circuit, need to carry out good frequency compensation.
Because upper level circuit is Switching Power Supply, and the operating frequency great majority of current most Switching Power Supply are below 150kHz.For improving the attenuation rate of prime Switching Power Supply output ripple, raising Power Supply Rejection Ratio that only need be in 0 to 150kHz frequency band range.Therefore, we adopt the operational amplifier with dynamic compensation function, and optimization frequency compensating circuit at the zero point of introducing a Left half-plane in frequency band, reduces the requirement to output capacitance, has significantly reduced application cost.Meanwhile, the Zero-tracking load current of compensation changes, and has reduced the impact of load variations on the stability of a system, and widen open loop phase nargin, effectively increase loop bandwidth, the transient response characteristic of active filter is improved, ensured the stability of system.
In circuit, prime amplifier N1:1 and R1～R4 forms differential amplifier circuit, wherein R1=R3, and R2=R4, its output:
Adder through rear class amplifier composition is carried out error ratio, known:
Hence one can see that, and reference voltage signal Vr and output voltage V o are proportionate relationship, change benchmark Vr and can change Vo, thereby realize the program control output of voltage.
Designed active low-pass filter above, owing to being subject to the restriction of operational amplifier gain and bandwidth, also not ideal enough in the inhibitory action of high band.The present invention has increased a higher Passive LC low pass filter of cut-off frequency (seeing L1 and C2 in Fig. 1), can effectively suppress ripple and the noise of high band, simultaneously because the cut-off frequency of this LC low pass filter is higher, filter inductance and capacity cell parameter value are also not too large, therefore the volume of required filter inductance and capacity cell is also less, is conducive to reduce overall dimension and the weight of whole Ripple Suppression device.
Specific embodiment:
The present invention requires program-controlled voltage to be output as 0～20V, and maximum output current is 10A, because circuit DAC output area is-5V～0V, the value of resistance R 1, R2, R5 and R6, relevant with output voltage V o, amplifier N1 working range, because amplifier supply power voltage is 12V, for ensureing good adjustment characteristic, determine that Vmon maximum is 10V, therefore k1 is taken as 0.5, k2 is taken as 0.5, choosing resistance R1 is 20k, and R2 is 10k, and R5 is 10k, R6 is 10k, and all adopting precision is 0.1%.Metal film resistor.Amplifier N1 adopts high accuracy double operational LT1013, can complete the accurate adjustment of active voltage; Adjust pipe V1 and adopt HUF75345P, typical conducting resistance is 7m Ω, can make the pressure drop voltage of 10A be down in 200mV, has effectively improved power-efficient.
For suppressing high-frequency noise, passive low ventilating filter-3dB cut-off frequency is designed to 100kHz.For dwindling the volume of whole Ripple Suppression device, while preventing by larger electric current, inductance core is unsaturated simultaneously, less inductance value can be used the very little chip inductor element of encapsulation, and the inductance value in circuit is fixed as to 1.0 μ H, carries out high-frequency suppressing by optimizing capacitance.
As shown in Figure 2, the insertion loss simulation curve after optimization as shown in Figure 3 for filter circuit after optimization and device parameter values.In circuit, adopted two electric capacity, one of them electric capacity is in series with a resistor, can eliminate stray inductance and tank capacitance generation resonance due to electric capacity in the time of high frequency, causes the phenomenon in the inhibition variation of a certain frequency filter.
In the present invention, model machine circuit outputing test data under 10A load current the results are shown in Table 1:
Table 1 model machine circuit outputs test data
(note: low-frequency ripple is the following peak-to-peak value of 150kHz, high frequency ripple is the above peak-to-peak value of 150kHz.)
Visible:
1, output voltage worst error is 0.3%, illustrates that circuit has good control precision.
2, circuit minimum pressure drop is 163mV, is only slightly larger than maximum ripple composition (150mV), and power supply has high efficiency.
3, circuit low-frequency ripple inhibition degree
IL1＝20lg(45mV/2mV)＝33.06dB
High frequency ripple inhibition degree
IL2＝20lg(80mV/2mV)＝32.04dB
Circuit all has good inhibitory action to low-and high-frequency ripple.
The Ripple Suppression device that the present invention adopts the Combination Design of active and passive low ventilating filter to make, can suppress the ripple voltage in power supply effectively at Whole frequency band, thereby makes the output of power supply meet the occasion that ripple is had relatively high expectations.In addition,, because the pressure drop on this Ripple Suppression device almost only has ripple composition, circuit has very high efficiency.In addition,, owing to having adopted active filter to suppress low-frequency ripple, passive filter suppresses high frequency ripple without optimal design, can make filtering components and parts greatly reduce, and is conducive to the Miniaturization Design of product.
Claims (3)
1. the Ripple Suppression device circuit of a programme-controlled dc power, comprise that DC power supply just, negative pole output line, it is characterized in that: DC power supply just, between negative pole output line, be connected to after capacitor C 3, access again active low-pass filter, passive filter, described active low-pass filter comprises N channel high power MOSFET pipe V1, there is prime operational amplifier N1:1 and the rear class operational amplifier N1:2 of dynamic compensation function, passive filter comprises inductance L 1 and capacitor C 1, wherein inductance L 1 accesses on DC power cathode output line, capacitor C 1 one end is connected with inductance L 1 one end, capacitor C 1 other end access DC power anode output line, the in-phase input end of described prime operational amplifier N1:1 is connected with DC power anode output line by resistance R 2, the in-phase input end of prime operational amplifier N1:1 is also by resistance R 1 ground connection, the inverting input of prime operational amplifier N1:1 is by resistance R 3 and inductance L 1, between capacitor C 1, connect, the inverting input of prime operational amplifier N1:1 is also connected with the output of prime operational amplifier N1:1 by resistance R 4, the output of prime operational amplifier N1:1 is connected with the inverting input of rear class operational amplifier N1:2 by resistance R 6, between the inverting input of resistance R 6 and rear class operational amplifier N1:2, also access reference voltage signal by resistance R 5, the in-phase input end ground connection of rear class operational amplifier N1:2, rear class operational amplifier N1:2 output is connected with the grid of MOSFET pipe V1, on the source electrode access DC power cathode output line of MOSFET pipe V1, one end that the drain electrode of MOSFET pipe V1 is not connected with capacitor C 1 with inductance L 1 connects.
2. the Ripple Suppression device circuit of a kind of programme-controlled dc power according to claim 1, is characterized in that: prime operational amplifier N1:1 and resistance R 1-R4 form differential amplifier circuit, and rear class operational amplifier N1:2 forms adder.
3. the Ripple Suppression device circuit of a kind of programme-controlled dc power according to claim 1, is characterized in that: inductance L 1 and capacitor C 1 form LC low pass filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410189133.8A CN103973086B (en) | 2014-05-06 | 2014-05-06 | A kind of Ripple Suppression device circuit of programme-controlled dc power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410189133.8A CN103973086B (en) | 2014-05-06 | 2014-05-06 | A kind of Ripple Suppression device circuit of programme-controlled dc power |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103973086A true CN103973086A (en) | 2014-08-06 |
| CN103973086B CN103973086B (en) | 2016-08-24 |
Family
ID=51242245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410189133.8A Active CN103973086B (en) | 2014-05-06 | 2014-05-06 | A kind of Ripple Suppression device circuit of programme-controlled dc power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103973086B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105511389A (en) * | 2015-12-02 | 2016-04-20 | 中国电子科技集团公司第四十一研究所 | Lower programming control loop for improving programmable DC power supply output response speed |
| CN105553244A (en) * | 2015-12-22 | 2016-05-04 | 矽力杰半导体技术(杭州)有限公司 | EMI filter and switch power supply applying same |
| CN108712067A (en) * | 2018-04-28 | 2018-10-26 | 北京机械设备研究所 | A kind of active filter circuit inhibiting Switching Power Supply output high voltage ripple |
| CN111682744A (en) * | 2020-06-30 | 2020-09-18 | 连云港杰瑞电子有限公司 | Ripple attenuation circuit with load slope compensation function |
| CN112600393A (en) * | 2020-11-20 | 2021-04-02 | 中电科仪器仪表(安徽)有限公司 | Load correlation control circuit and method |
| CN112928942A (en) * | 2021-02-25 | 2021-06-08 | 中车株洲电力机车有限公司 | Three-phase inverter circuit and control method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3670230A (en) * | 1970-12-21 | 1972-06-13 | Ibm | Active filter capacitor for power supply switching regulators |
| US20080278229A1 (en) * | 2007-05-10 | 2008-11-13 | Andreas Grundl | Active Compensation Filter |
| EP2264877A1 (en) * | 2009-06-18 | 2010-12-22 | Alcatel Lucent | Active filter for DC power supply. |
| CN203225653U (en) * | 2013-05-21 | 2013-10-02 | 广西电网公司电力科学研究院 | Circuit for reducing ripple waves and suppressing noise for adjustable precision direct current high-voltage source |
| CN203872047U (en) * | 2014-05-06 | 2014-10-08 | 中国电子科技集团公司第四十一研究所 | Ripple suppressor circuit for programmable direct-current power supplies |
-
2014
- 2014-05-06 CN CN201410189133.8A patent/CN103973086B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3670230A (en) * | 1970-12-21 | 1972-06-13 | Ibm | Active filter capacitor for power supply switching regulators |
| US20080278229A1 (en) * | 2007-05-10 | 2008-11-13 | Andreas Grundl | Active Compensation Filter |
| EP2264877A1 (en) * | 2009-06-18 | 2010-12-22 | Alcatel Lucent | Active filter for DC power supply. |
| CN203225653U (en) * | 2013-05-21 | 2013-10-02 | 广西电网公司电力科学研究院 | Circuit for reducing ripple waves and suppressing noise for adjustable precision direct current high-voltage source |
| CN203872047U (en) * | 2014-05-06 | 2014-10-08 | 中国电子科技集团公司第四十一研究所 | Ripple suppressor circuit for programmable direct-current power supplies |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105511389A (en) * | 2015-12-02 | 2016-04-20 | 中国电子科技集团公司第四十一研究所 | Lower programming control loop for improving programmable DC power supply output response speed |
| CN105511389B (en) * | 2015-12-02 | 2018-06-26 | 中国电子科技集团公司第四十一研究所 | A kind of lower programming Control loop for promoting programme-controlled dc power output response speed |
| CN105553244A (en) * | 2015-12-22 | 2016-05-04 | 矽力杰半导体技术(杭州)有限公司 | EMI filter and switch power supply applying same |
| CN105553244B (en) * | 2015-12-22 | 2018-05-29 | 矽力杰半导体技术(杭州)有限公司 | Electromagnetic interface filter and apply its Switching Power Supply |
| US10069406B2 (en) | 2015-12-22 | 2018-09-04 | Silergy Semiconductor Technology (Hangzhou) Ltd | EMI filter and switching power supply with the same |
| CN108712067A (en) * | 2018-04-28 | 2018-10-26 | 北京机械设备研究所 | A kind of active filter circuit inhibiting Switching Power Supply output high voltage ripple |
| CN111682744A (en) * | 2020-06-30 | 2020-09-18 | 连云港杰瑞电子有限公司 | Ripple attenuation circuit with load slope compensation function |
| CN112600393A (en) * | 2020-11-20 | 2021-04-02 | 中电科仪器仪表(安徽)有限公司 | Load correlation control circuit and method |
| CN112600393B (en) * | 2020-11-20 | 2024-04-19 | 中电科思仪科技(安徽)有限公司 | Load correlation control circuit and method |
| CN112928942A (en) * | 2021-02-25 | 2021-06-08 | 中车株洲电力机车有限公司 | Three-phase inverter circuit and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103973086B (en) | 2016-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103973086A (en) | Ripple wave suppressor circuit of program-controlled direct-current power supply | |
| US9190905B2 (en) | Switching power supply device for noise reduction | |
| CN103838286B (en) | The low pressure difference linear voltage regulator of a kind of fast transient response, high stability | |
| Qu et al. | An ultralow-power fast-transient capacitor-free low-dropout regulator with assistant push–pull output stage | |
| CN102904445B (en) | A kind of control circuit and control method thereof being applied to high frequency dc to dc converter | |
| CN104063003A (en) | Low-power dissipation off-chip-capacitor-free LDO (Low Dropout Regulator) integrating slew rate enhancing circuit | |
| CN103412602B (en) | Non-capacitive low-dropout linear voltage regulator | |
| CN103838287A (en) | Linear voltage regulator for compensation zero point dynamic adjustment | |
| CN104950970A (en) | Voltage regulator | |
| CN103354419B (en) | Based on fully integrated compensating network on the sheet of constant transconductance amplifier and capacitor multiflier | |
| CN106484020A (en) | Low-dropout linear voltage-regulating circuit | |
| CN103760943A (en) | Slew rate enhancement circuit applicable to LDO regulators (low dropout regulators) | |
| CN109460105A (en) | A kind of dynamic zero pole point tracking and compensating circuit | |
| CN209014996U (en) | A kind of dynamic zero pole point tracking and compensating circuit for high power LD O | |
| CN106647912A (en) | Load-based dynamic frequency compensation method and load-based dynamic frequency compensation device | |
| Xu et al. | A 2.7 W AC-coupled hybrid supply modulator achieving 200 MHz envelope-tracking bandwidth for 5G new radio power amplifier | |
| CN203872047U (en) | Ripple suppressor circuit for programmable direct-current power supplies | |
| CN103713679B (en) | A kind of LDO circuit based on discrete component | |
| CN103401431B (en) | A kind of high stability inverse-excitation type DC-DC converter | |
| TWI400592B (en) | Low dropout regulator | |
| CN106961216A (en) | Novel constant output current BUCK circuits | |
| CN103399608A (en) | Low dropout regulator (LDO) integrated with slew rate intensifier circuit | |
| CN203397252U (en) | High-performance linear low-dropout voltage stabilizing circuit | |
| CN203206183U (en) | Differential radio-frequency amplifier | |
| CN202771296U (en) | Low static power consumption rapid transient response no- output capacitance low dropout regulator (LDO) circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Bin Inventor after: Wang Dinghua Inventor after: Wang Wenting Inventor after: Wang Jun Inventor after: Zhang Genmiao Inventor after: Wang Qun Inventor after: Ao Xiang Inventor after: Guo Yufei Inventor before: Li Bin Inventor before: Wang Dinghua Inventor before: Wang Wenting Inventor before: Wang Jun Inventor before: Zhang Genmiao Inventor before: Wang Qun Inventor before: Ao Xiang Inventor before: Guo Yufei |
|
| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190327 Address after: 266555 No. 98 Xiangjiang Road, Huangdao District, Qingdao City, Shandong Province Patentee after: China Electronics Technology Instrument and Meter Co., Ltd. Address before: 233010 No. 726 Huaguang Avenue, Bengbu City, Anhui Province Patentee before: The 41st Institute of CETC |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266555 No. 98 Xiangjiang Road, Huangdao District, Qingdao City, Shandong Province Patentee after: CLP kesiyi Technology Co.,Ltd. Address before: 266555 No. 98 Xiangjiang Road, Huangdao District, Qingdao City, Shandong Province Patentee before: CHINA ELECTRONIC TECHNOLOGY INSTRUMENTS Co.,Ltd. |