CN108521222A - A kind of energy-saving high-frequency switch circuit based on low-clock signal demand - Google Patents

A kind of energy-saving high-frequency switch circuit based on low-clock signal demand Download PDF

Info

Publication number
CN108521222A
CN108521222A CN201810287297.2A CN201810287297A CN108521222A CN 108521222 A CN108521222 A CN 108521222A CN 201810287297 A CN201810287297 A CN 201810287297A CN 108521222 A CN108521222 A CN 108521222A
Authority
CN
China
Prior art keywords
circuit
signal
comparator
low
potential
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.)
Withdrawn
Application number
CN201810287297.2A
Other languages
Chinese (zh)
Inventor
罗大松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hua Gao Electric Technology Co Ltd
Original Assignee
Hua Gao Electric Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hua Gao Electric Technology Co Ltd filed Critical Hua Gao Electric Technology Co Ltd
Priority to CN201810287297.2A priority Critical patent/CN108521222A/en
Publication of CN108521222A publication Critical patent/CN108521222A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/28—Modifications for introducing a time delay before switching
    • H03K17/284—Modifications for introducing a time delay before switching in field effect transistor switches
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/0081—Power supply means, e.g. to the switch driver

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electronic Switches (AREA)

Abstract

The present invention discloses a kind of energy-saving high-frequency switch circuit based on low-clock signal demand; it is related to high-frequency switch circuit technical field, solves the technical issues of intelligent power-efficient high high-frequency switch circuit for being difficult to realize protection circuit silence cut-off present in the prior art under conditions of signal resource remains unchanged to create non-processor.Include mainly pulse-width modulation power circuit, feedback protection circuit and shutdown Acquisition Circuit.The present invention is for designing HF switch.

Description

A kind of energy-saving high-frequency switch circuit based on low-clock signal demand
Technical field
The present invention relates to high-frequency switch circuit technical fields, and in particular to a kind of energy saving height based on low-clock signal demand Frequency switching circuit.
Background technology
With the development of hyundai electronics science and technology, electronic equipment is more and more finer by people’s lives, convenient.Currently, All there is most of electronic equipment HF switch, HF switch generally all to be driven by pierce circuit, due to oscillation The unstability of device circuit, it will usually oscillator is isolated using protection circuit, removed and feedback control, and be in same The protection circuit of power source internal be continue it is active, have can not silent characteristic, and this protect circuit can not increase it is fixed When the timing circuits structural condition such as device under carry out self silent, cut-off and shutdown, this aspect HF switch can be made not have It also consumes energy inside progress when task, reduces the power-efficient of system, influence to load the power quality actually obtained, more It is knifeedge that on the other hand, in certain application scenarios, an equipment body can generally have many HF switches, such as logical at it The protection circuit is largely used in news system, when system carries out radio listening silence, the lasting work of a large amount of internal protection circuitries The electromagnetic field signal of formation can be detected out, be easy to expose opposite geographical location.
Invention content
For the above-mentioned prior art, present invention aims at a kind of energy saving high frequencies based on low-clock signal demand of offer to open Powered-down road solves and is difficult to realize protection circuit silence cut-off present in the prior art under conditions of signal resource remains unchanged The technical issues of intelligent power-efficient high high-frequency switch circuit to create non-processor.
In order to achieve the above objectives, the technical solution adopted by the present invention is as follows：
A kind of energy-saving high-frequency switch circuit based on low-clock signal demand, including:
Pulse-width modulation power circuit receives input signal；
Feedback protection circuit, the switching channels voltage signal and load voltage letter that acquisition pulse-width modulation power circuit is exported Number；
The pulse-width modulation power circuit also receives the reset signal that feedback protection circuit is exported and selectively modulates and opens Close channel voltage signal and load voltage signal；
Acquisition Circuit is turned off, the switching signal in pulse-width modulation power circuit is acquired；
The feedback protection circuit, switch receive the time delayed signal that shutdown Acquisition Circuit is exported.
Description of the drawings
Fig. 1 is circuit diagram of the present invention；
Fig. 2 is the circuit diagram of oscillator of the present invention；
Fig. 3 is the circuit diagram of delay controller of the present invention；
Fig. 4 is the opposite change schematic diagram of partial pulse signal of the present invention.
Specific implementation mode
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive Feature and/or step other than, can combine in any way.
The present invention will be further described below in conjunction with the accompanying drawings：
A kind of energy-saving high-frequency switch circuit based on low-clock signal demand, including:
Pulse-width modulation power circuit receives input signal VIN；
Feedback protection circuit, the ENC marked in Fig. 1, the switching channels voltage that acquisition pulse-width modulation power circuit is exported Signal VcsWith load voltage signal Vo；
The pulse-width modulation power circuit also receives the reset signal RST that feedback protection circuit is exported and selectively adjusts Switching channels voltage signal V processedcsWith load voltage signal Vo；
Acquisition Circuit is turned off, the switching signal V in pulse-width modulation power circuit is acquiredpwm；
The feedback protection circuit, switch receive the time delayed signal DS that shutdown Acquisition Circuit is exported.
Embodiment 1
The pulse-width modulation power circuit, including：Pierce circuit；The ends d type flip flop U2, D connect power supply VCC, receive The reference clock signal of pierce circuit output；First connects the Q of d type flip flop U2 with door U3, the first terminal of input port The reference clock signal of end and another terminal reception oscillator circuit output；Isolator T1；First field-effect tube Q1, grid connect It connects first and input signal V is received by the first winding of isolator T1 with the output end of door U3, its drain electrodeINAnd source electrode passes through resistance Ground connection, the high potential point output switching channels voltage signal V of resistancecs；It is multiplexed capacitance C2, its preset maximum charging voltage does not influence First field-effect tube Q1's cut-offs, and just can prevent cut-in voltage from overshooting, and one end connects the grid of the first field-effect tube Q1 And the other end is grounded；The secondary winding of the isolator T1 is connected with rectification circuit for being used as load port.
In said program, the pierce circuit, including oscillator OSC, using capacitor charge and discharge type oscillator；First is anti- Phase device U1, wide rising edge and width failing edge clock signal PLS for exporting oscillator OSC are converted to reference clock signal, Its input terminal connection oscillator OSC output end and output end are connected to the clock end CLK of d type flip flop U2.
In said program, the oscillator OSC, including：First current source I3, high potential end connect power supply VCC；Second Current source I4, low potential end ground connection；First feedback switch S3, hot end connect the low potential end of the first current source I3； Second feedback switch S4, hot end connects the cold end of the first feedback switch S3 and cold end connects the second current source The high potential end of I4；
First current source I3, the second current source I4, the first feedback switch S3 and the second feedback switch S4 constitute power supply circuit；
First charging capacitor Cosc, one end is grounded and the other end is connected to the first feedback switch S3 and the second feedback switch Potential point where the connected position of S4, the potential point are current vibration potential base and the first feedback switch S3 cold ends, Or the second feedback switch S4 hot ends；First comparator U7, high potential input are terminated with preset high voltage VH；Second ratio Compared with device U8, low potential input is terminated with preset low-voltage VL, its high potential input terminal connection first comparator U7 low potential Input terminal and high potential input terminal are additionally coupled to current potential where the connected position of the first feedback switch S3 and the second feedback switch S4 Point；First NAND gate U9, the output end of the first input end connection first comparator U7 of input port；Second NAND gate U10, the first input end of input port connect the output end of the second comparator U8, the second input terminal be connected to first with The output end of NOT gate U9；The first NAND gate U9, the second input terminal are connected to the output end of the second NAND gate U10 and defeated Outlet sends out clock signal PLS；The first feedback switch S3, control terminal connect the output end of the second NAND gate U10；It is described Second feedback switch S4, control terminal connect the output end of the first NAND gate U9.
Embodiment 2
The feedback protection circuit, including：First comparator circuit receives the time delayed signal that shutdown Acquisition Circuit is exported DS；Second comparator circuit connects first comparator circuit and receives shutdown Acquisition Circuit institute with first comparator circuit synchronization The time delayed signal DS of output；Second and door U6, input port are separately connected the output end and the second ratio of first comparator circuit Output end and output end compared with device circuit send out reset signal RST to pulse-width modulation power circuit.
In said program, the first comparator circuit, including：Third current source I1, high potential end connect power supply VCC；First synchronization bias switch S1, hot end connects the low potential end of third current source I1 and control terminal receives shutdown and adopts The time delayed signal DS that collector is exported；Third comparator U4, bias voltage input connect the first synchronization bias switch S1 Cold end, its high potential input terminal be connected with limiting voltage VLMT, its low potential input terminal acquire pulse-width modulation power circuit The switching channels voltage signal V exportedcsAnd output end is connected to the input port of second and door U6.
In said program, second comparator circuit, including：4th current source I2, high potential end connect power supply VCC；Second synchronization bias switch S2, hot end connects the low potential end of the 4th current source I2 and control terminal is synchronous with first Biased witch S1, which is synchronized, receives the time delayed signal DS that shutdown Acquisition Circuit is exported；4th comparator U5, bias voltage input Cold end, its low potential input terminal and the third comparator U4 synchronous acquisition pulsewidth tune of the second synchronization bias switch S2 of end connection The switching channels voltage signal V that power circuit processed is exportedcs, high potential input terminal is connected with and load voltage signal VoIt is proportional Load feedback signal VFBAnd output end is connected to the input port of second and door U6.
Embodiment 3
The shutdown Acquisition Circuit, including：Second phase inverter U12 enables to delay section more reasonable, input terminal Acquire the switching signal V in pulse-width modulation power circuitpwm；Delay controller DTCC, the output end of the second phase inverter U12 of connection, The also current vibration potential of acquisition pulse-width modulation power circuit and output time delayed signal DS.
In said program, the delay controller DTCC, including：Third phase inverter U16, input terminal connect the second reverse phase The output end of device U12；Second field-effect tube Q2, grid connects the output end of third phase inverter U16 and source electrode is grounded；5th electricity Stream source I5, high potential end connects power supply VCC and low potential end connects the drain electrode of the second field-effect tube Q2；Second charging capacitor C1, one end connects the low potential end of the 5th current source I5 and the other end is grounded；The ends rest-set flip-flop U9, S are connected to second and fill One end of capacitance C1 potential changes；5th comparator Ua, high potential input terminal are connected with less than preset high voltage VHAnd height In preset low-voltage VLReference voltage VmAnd the current vibration potential of low potential input terminal acquisition pulse-width modulation power circuit；The Three are connected with and switching signal V with door Ub, one terminal of input portpwmLinear clock signal is PLS, another Terminal connects the output end of the 5th comparator Ua and output end is connected to the ends R of rest-set flip-flop U9；4th phase inverter U11, it is defeated The ends Q and output end for entering end connection rest-set flip-flop U9 send out time delayed signal DS.
Embodiment 4
The oscillator OSC, the first current source I3 and the first feedback switch S3 constitute charging structure, for charging to first Capacitance CoscIt charges；Second current source I4 and the second feedback switch S4 constitute the electric discharge knot with charging structure with current channel Structure, for the first charging capacitor CoscIt discharges；Due to the first charging capacitor CoscLinear charge-discharge characteristic, it is current to vibrate Current potential base can make first comparator U7 or the second comparator U8 stage output voltages, further pass through the first NAND gate U9 Clock signal PLS is obtained with the second NAND gate U10, and feedback control charging structure or discharging structure are turned on and off simultaneously, The oscillating impulse for forming cycle exports process.
Embodiment 5
Opposite switching signal is received as Fig. 4, the first synchronization bias switch S1 and the second synchronization bias switch S2 are synchronized VpwmTime delayed signal DS with delay, always can be with switching signal VpwmShutdown and have certain delay time Td1Shutdown from Body；It takes and is less than preset high voltage VHWith higher than preset low-voltage VLReference voltage VmIt can be to the delay control of shutdown Acquisition Circuit Device DTCC progress processed is pre- enabled, and preset high voltage VH, preset low-voltage VLWith reference voltage VmDelay time T can be controlledd1Greatly It is small；Consider the delay Δ of the inherent delay vector △ of the second phase inverter U12, third phase inverter U16 and the 4th phase inverter U11τ, knot Run OFF signal V jointlypwmTime arrow function t1With the time arrow function t of current vibration potential base2There can be functional relation：
Td1=f { [2 Δsτ+t1(VpWM)],Δτ,t2(Vm,VL)}；
And redundancy duration Td2Size can be by the capacitance of the size and the second charging capacitor C1 of the 5th current source I5 It is determined, redundancy duration Td2Size can also, creatively, form different feedback protection grades, each feedback Protection class corresponds to a redundancy duration T respectivelyd2Size, while can yet correspond to a power consumption, such as superfluous Remaining duration Td2Longer, the power consumption of the feedback protection grade is also smaller (to be synchronized using the first of P-channel field-effect transistor (PEFT) pipe Biased witch S1 and the second synchronization bias switch S2), redundancy duration Td2Maximum value by the first charging capacitor CoscIt is linear Charge and discharge electric frequency determines.
Compared with prior art, the main advantageous effect of the present invention：The intelligent power-efficient high for realizing non-processor is high Frequency switching circuit；The shutdown that feedback protection circuit can be carried out when without more controlling signal or clock signal resource controls； Due to no longer needing to control clock signal using programmable device timing and without using processing equipment to provide, and there is power consumption Feature small, at low cost and high versatility.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Belong to those skilled in the art in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in all are answered It is included within the scope of the present invention.

Claims (9)

1. a kind of energy-saving high-frequency switch circuit based on low-clock signal demand, which is characterized in that including:
Pulse-width modulation power circuit receives input signal VIN；
Feedback protection circuit, the switching channels voltage signal V that acquisition pulse-width modulation power circuit is exportedcsAnd load voltage signal Vo；
The pulse-width modulation power circuit also receives the reset signal RST that feedback protection circuit is exported and selectively modulates and opens Close channel voltage signal VcsWith load voltage signal Vo；
Acquisition Circuit is turned off, the switching signal V in pulse-width modulation power circuit is acquiredpwm；
The feedback protection circuit, switch receive the time delayed signal DS that shutdown Acquisition Circuit is exported.
2. a kind of energy-saving high-frequency switch circuit based on low-clock signal demand according to claim 1, which is characterized in that The pulse-width modulation power circuit, including：
Pierce circuit；
D type flip flop U2, the reference clock signal of reception oscillator circuit output；
First connects the ends Q and the another terminal reception oscillator circuit of d type flip flop U2 with door U3, the first terminal of input port The reference clock signal of output；
Isolator T1；
First field-effect tube Q1, the first winding that the output end of grid connection first and door U3, its drain electrode pass through isolator T1 Receive input signal VINAnd source electrode passes through resistance eutral grounding；
It is multiplexed capacitance C2, one end connects the grid of the first field-effect tube Q1 and the other end is grounded；
The secondary winding of the isolator T1 is connected with rectification circuit for being used as load port.
3. a kind of energy-saving high-frequency switch circuit based on low-clock signal demand according to claim 2, which is characterized in that The pierce circuit, including
Oscillator OSC, using capacitor charge and discharge type oscillator；
First phase inverter U1, input terminal connection oscillator OSC output ends and output end are connected to the clock end of d type flip flop U2 CLK。
4. a kind of energy-saving high-frequency switch circuit based on low-clock signal demand according to claim 3, which is characterized in that The oscillator OSC, including：
First current source I3, high potential end connect power supply VCC；
Second current source I4, low potential end ground connection；
First feedback switch S3, hot end connect the low potential end of the first current source I3；
Second feedback switch S4, hot end connect the cold end of the first feedback switch S3 and the second electricity of cold end connection The high potential end of stream source I4；
First charging capacitor Cosc, one end is grounded and the other end is connected to the first feedback switch S3's and the second feedback switch S4 Potential point where connected position；
First comparator U7, high potential input are terminated with preset high voltage VH；
Second comparator U8, low potential input are terminated with preset low-voltage VL, its high potential input terminal connection first comparator U7 Low potential input terminal and high potential input terminal be additionally coupled to the connected position of the first feedback switch S3 and the second feedback switch S4 Place potential point；
First NAND gate U9, the output end of the first input end connection first comparator U7 of input port；
Second NAND gate U10, the first input end of input port connect the output end of the second comparator U8, the second input terminal Son is connected to the output end of the first NAND gate U9；
The first NAND gate U9, the second input terminal are connected to the output end of the second NAND gate U10 and when output end are sent out Clock signal PLS；
The first feedback switch S3, control terminal connect the output end of the second NAND gate U10；
The second feedback switch S4, control terminal connect the output end of the first NAND gate U9.
5. a kind of energy-saving high-frequency switch circuit based on low-clock signal demand according to claim 1, which is characterized in that The feedback protection circuit, including：
First comparator circuit receives the time delayed signal DS that shutdown Acquisition Circuit is exported；
Second comparator circuit connects first comparator circuit and receives shutdown Acquisition Circuit institute with first comparator circuit synchronization The time delayed signal DS of output；
Second is separately connected the output of the output end and the second comparator circuit of first comparator circuit with door U6, input port It holds and output end sends out reset signal RST to pulse-width modulation power circuit.
6. a kind of energy-saving high-frequency switch circuit based on low-clock signal demand according to claim 5, which is characterized in that The first comparator circuit, including：
Third current source I1, high potential end connect power supply VCC；
First synchronization bias switch S1, hot end connects the low potential end of third current source I1 and control terminal receives shutdown and adopts The time delayed signal DS that collector is exported；
Third comparator U4, cold end, its high potential that bias voltage input connects the first synchronization bias switch S1 are defeated Enter end and is connected with limiting voltage VLMT, the switching channels voltage that is exported of its low potential input terminal acquisition pulse-width modulation power circuit Signal Vcs。
7. a kind of energy-saving high-frequency switch circuit based on low-clock signal demand according to claim 6, which is characterized in that Second comparator circuit, including：
4th current source I2, high potential end connect power supply VCC；
Second synchronization bias switch S2, hot end connects the low potential end of the 4th current source I2 and control terminal is synchronous with first Biased witch S1, which is synchronized, receives the time delayed signal DS that shutdown Acquisition Circuit is exported；
4th comparator U5, cold end, its low potential that bias voltage input connects the second synchronization bias switch S2 are defeated Enter the switching channels voltage signal V that end is exported with third comparator U4 synchronous acquisition pulse-width modulation power circuitscs, high potential it is defeated Enter end to be connected with and load voltage signal VoProportional load feedback signal VFB。
8. a kind of energy-saving high-frequency switch circuit based on low-clock signal demand according to claim 1, which is characterized in that The shutdown Acquisition Circuit, including：
Second phase inverter U12, input terminal acquire the switching signal V in pulse-width modulation power circuitpwm；
Delay controller DTCC connects the output end of the second phase inverter U12, also acquires the current oscillation of pulse-width modulation power circuit Current potential and output time delayed signal DS.
9. a kind of energy-saving high-frequency switch circuit based on low-clock signal demand according to claim 8, which is characterized in that The delay controller DTCC, including：
Third phase inverter U16, input terminal connect the output end of the second phase inverter U12；
Second field-effect tube Q2, grid connects the output end of third phase inverter U16 and source electrode is grounded；
5th current source I5, high potential end connects power supply VCC and low potential end connects the drain electrode of the second field-effect tube Q2；
Second charging capacitor C1, one end connects the low potential end of the 5th current source I5 and the other end is grounded；
The ends rest-set flip-flop U9, S are connected to one end of the second charging capacitor C1 potential changes；
5th comparator Ua, high potential input terminal are connected with less than preset high voltage VHWith higher than preset low-voltage VLReference Voltage VmAnd the current vibration potential of low potential input terminal acquisition pulse-width modulation power circuit；
Third and door Ub, one terminal of input port are connected with and switching signal VpwmLinear clock signal, the other end The output end and output end of the 5th comparator Ua of son connection are connected to the ends R of rest-set flip-flop U9；
4th phase inverter U11, input terminal connects the ends Q of rest-set flip-flop U9 and output end sends out time delayed signal DS.
CN201810287297.2A 2018-03-30 2018-03-30 A kind of energy-saving high-frequency switch circuit based on low-clock signal demand Withdrawn CN108521222A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810287297.2A CN108521222A (en) 2018-03-30 2018-03-30 A kind of energy-saving high-frequency switch circuit based on low-clock signal demand

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810287297.2A CN108521222A (en) 2018-03-30 2018-03-30 A kind of energy-saving high-frequency switch circuit based on low-clock signal demand

Publications (1)

Publication Number Publication Date
CN108521222A true CN108521222A (en) 2018-09-11

Family

ID=63431694

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810287297.2A Withdrawn CN108521222A (en) 2018-03-30 2018-03-30 A kind of energy-saving high-frequency switch circuit based on low-clock signal demand

Country Status (1)

Country Link
CN (1) CN108521222A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101388661A (en) * 2008-07-31 2009-03-18 崇贸科技股份有限公司 Power saving circuit of pulse width modulation circuit
CN101527512A (en) * 2008-07-09 2009-09-09 崇贸科技股份有限公司 Bias-current limiting method and apparatus for restricting the maximum output power of power converter
CN101789681A (en) * 2010-03-01 2010-07-28 崇贸科技股份有限公司 Power supply apparatus with open loop protection
CN101982935A (en) * 2010-04-28 2011-03-02 崇贸科技股份有限公司 Control device and method for one time side adjustment of power supply converter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101527512A (en) * 2008-07-09 2009-09-09 崇贸科技股份有限公司 Bias-current limiting method and apparatus for restricting the maximum output power of power converter
CN101388661A (en) * 2008-07-31 2009-03-18 崇贸科技股份有限公司 Power saving circuit of pulse width modulation circuit
CN101789681A (en) * 2010-03-01 2010-07-28 崇贸科技股份有限公司 Power supply apparatus with open loop protection
CN101982935A (en) * 2010-04-28 2011-03-02 崇贸科技股份有限公司 Control device and method for one time side adjustment of power supply converter

Similar Documents

Publication Publication Date Title
CN102969874B (en) The control circuit with degree of depth intermittent electricity-saving pattern of power converter
CN107493016B (en) A kind of control method and circuit of asymmetrical half-bridge circuit of reversed excitation
CN207529257U (en) GaN-HEMT power tube grid drain electrodes sequence of power switching protects biasing circuit
CN202340188U (en) Frequency jitter device and switching power supply thereof
CN103066826B (en) Soft-start system of switching power supply converter
CN102904431B (en) A kind of Switching Power Supply and constant voltage output controller thereof
CN104362846B (en) A kind of controllable multi-channel output DC-DC inverter of electrifying timing sequence
CN105359278A (en) Active diode having improved transistor turn-off control method
CN103312267B (en) A kind of high precision oscillator and frequency generating method
CN108521222A (en) A kind of energy-saving high-frequency switch circuit based on low-clock signal demand
CN205232487U (en) Electromagnetic heating system and heating control device thereof
CN106655725A (en) Power source converter and advanced driving control circuit thereof
CN103683892B (en) Switching Power Supply and controller thereof
CN202872629U (en) Switching power supply and constant voltage output controller thereof
CN202931189U (en) Charge pump circuit of motor driver
CN105337496A (en) Pulse frequency modulation circuit based on voltage controlled oscillator
CN103869855A (en) Novel high-voltage generating circuit
CN108540113A (en) A kind of high-frequency switch circuit automatically controlled based on local circuit
CN201497808U (en) Radar pulse modulator
CN103747581A (en) Infrared lamp control module on basis of 555 timer and infrared camera
CN201422074Y (en) Switch power supply
CN201134763Y (en) Off-line current type PWM power source control circuit
CN104753798A (en) Mobile hotspot UFI equipment and startup method
CN204408188U (en) A kind of DC-DC pierce circuit of dual output
CN201726326U (en) Half-bridge soft switching power source with passive power factor correcting circuit

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication

Application publication date: 20180911

WW01 Invention patent application withdrawn after publication