CN109861514A - A kind of starting control method and circuit - Google Patents
A kind of starting control method and circuit Download PDFInfo
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- CN109861514A CN109861514A CN201811343675.0A CN201811343675A CN109861514A CN 109861514 A CN109861514 A CN 109861514A CN 201811343675 A CN201811343675 A CN 201811343675A CN 109861514 A CN109861514 A CN 109861514A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The present invention provides a kind of chip starting control method and circuit, it is exported using by linear voltage stabilization, booster circuit exports the mode of two kinds of powering mode parallel connections, two kinds of chip power supply modes are provided, and the detection control logic of control chip is combined to be selected, utilize the level state at chip controls foot detection booster circuit driving end, when chip detects that third transistor base stage has level output in booster circuit, start booster circuit power supply mode, when chip does not detect level in third triode base stage or is zero level, then chip is then powered by linear voltage-stabilizing circuit.Circuit structure of the present invention is simple, and control mode is simple, easily controllable, can satisfy different input requirements.
Description
Technical field
The present invention designs a kind of start-up circuit, in particular to wide input voltage range, and input minimum voltage is far below control
Chip starts threshold voltage, and maximum input voltage is much higher than starting up's power supply electricity of chip highest protection voltage threshold
Road.
Background technique
The minimum value that the confession of the control chip of general Switching Power Supply electrically activates voltage will be higher than 7V, control chip highest
Overvoltage protection value does not exceed 30V.Common chip starting power supply mode is to use linear voltage-stabilizing circuit by the high voltage of input
Stablize in chip normal working voltage range, but is that can only convert low-voltage for high voltage the shortcomings that linear voltage stabilization.So
If the input voltage of fruit product is lower than the starting voltage of chip, linear voltage-stabilizing circuit is not just available, it is therefore necessary to use one
Booster circuit is provided normally by linear voltage-stabilizing circuit to chip afterwards after input voltage to be increased to the starting voltage for reaching chip
Start voltage.
Fig. 1 is the circuit diagram of a kind of chip start-up circuit that the prior art provides, and circuit includes delay switch circuit, linear
Voltage regulator circuit, BOOST booster circuit, circuit specific composition are as follows: by linear voltage-stabilizing circuit and switching circuit parallel connection again with BOOST liter
Volt circuit series connection, finally output for chip provides starting voltage, in this way, either chip is in low pressure or high voltage startup, all
It needs to carry out steady pressure treatment by linear voltage-stabilizing circuit to carry out boosting processing using BOOST booster circuit, in this way, chip opens
Streaming current is just restricted, and the inductance value of circuit axle inductance L1 just needs to take very big in BOOST booster circuit.Moreover,
Transient state will appear starting current deficiency, the risk that can not start with chip when playing machine.
Present invention is generally directed to input highest lower than chip starting voltage minimum, product when the input minimum voltage of product
Voltage is designed higher than the case where chip overvoltage protection value.Linear voltage-stabilizing circuit and booster circuit are cleverly used in combination,
Using two kinds of starting control logics of chip, different Starting mode is taken for different input voltage values, can be realized complete
Voltage range can effectively start control chip, meet the exclusive design requirement of product.
Summary of the invention
Have in view of that, the present invention proposes a kind of starting control method, and provides a kind of more adduction in conjunction with this design method
Practical start-up circuit is managed, different Starting mode can be chosen according to the difference of input voltage, by linear voltage-stabilizing circuit and liter
Volt circuit is cleverly combined together, and realizes that full voltage range of the chip from low-voltage to high voltage normally starts.
The invention is realized by the following technical scheme:
A kind of starting control method, is used for chip power supply control, and chip controls end detects inductance one end in booster circuit
Level state, and chip power supply mode is selected according to the level state of inductance one end in booster circuit: when having detected that level is defeated
Out, chip provides chip supply voltage by the output of booster circuit, and when detecting no level output, chip is by linear voltage stabilization electricity
The output on road provides chip supply voltage.
Preferably, when input voltage starts voltage lower than chip, chip controls end detects inductance one end in booster circuit
Level state: if inductance one end exports without level or is zero level in detection booster circuit, the selected linear voltage regulator circuit of chip time
Implement power supply, since input voltage is lower than starting voltage, the output of linear voltage stabilization can not start for chip, and chip can not open at this time
It is dynamic；After being delayed for a period of time, chip controls end restarts level detection, if detecting in booster circuit inductance one end still without electricity
Flat output, chip continuation is standby not to be started, and keeps cycle detection；Until chip controls end detects inductance one in booster circuit
After there is level output at end, chip controls end generates a PWM duty cycle signal, controls chip selection at this time by the output of booster circuit
Implement power supply；
When input voltage is higher than chip starting voltage or overvoltage protection voltage, linear voltage-stabilizing circuit output is able to maintain that chip
Whether no matter starting and work, detect booster circuit output end whether there is or not level output, chip is selected by linear voltage-stabilizing circuit
Implement power supply.
A kind of starting control circuit, for providing supply voltage, including a linear voltage-stabilizing circuit, a boosting electricity for chip
Road, a delay switch circuit, linear voltage-stabilizing circuit are used for the required electricity that normally starts stabilized input voltage to chip and work
Pressure, delay switch circuit and booster circuit are used for the minimum voltage that stabilized input voltage to chip can be started and be worked, line
Property voltage regulator circuit input terminal connect input voltage, linear voltage-stabilizing circuit output end connects chip feeder ear, and delay switch circuit is defeated
Enter end connection input voltage, delay switch circuit output end connects booster circuit input terminal, and booster circuit output end connects chip
Feeder ear；Delay switch circuit includes a delay capacitor, and delay capacitor one end connects delay switch circuit sampling end, delay electricity
Hold other end connection input ground.
Preferably, delay switch circuit further includes first resistor, the first voltage-stabiliser tube, second resistance, 3rd resistor, the one or three
Pole pipe, the second triode；First resistor one end is delay switch circuit input terminal, and first resistor one end is also connected with the first triode
Emitter and the second transistor emitter, the first resistor other end connect second resistance one end, the first pressure stabilizing tube cathode, this connection
Point is the sampling end of delay switch circuit, the anode connection input ground of the first voltage-stabiliser tube, second resistance other end connection the one or three
Pole pipe base stage, the first transistor collector connect the second transistor base, 3rd resistor one end, and the connection of the 3rd resistor other end is defeated
Enter ground, the second transistor collector is as delay switch circuit output end.
Preferably, booster circuit includes the first inductance, the second capacitor, third transistor, first diode；First inductance one
End is used as booster circuit input terminal, and first inductance one end is also connected with second capacitor one end, and the connection of the second capacitor other end inputs ground,
The first inductance other end connects first diode anode, third transistor collector, third transistor emitter connection ground, third
Transistor base connects chip controls end, and first diode cathode is as booster circuit output end.
Preferably, third transistor equivalence replacement is metal-oxide-semiconductor, and MOS drain electrode corresponds to third transistor collector, metal-oxide-semiconductor
Source electrode corresponds to third transistor emitter, and metal-oxide-semiconductor grid corresponds to third transistor base stage.
Preferably, linear voltage-stabilizing circuit include the 4th resistance, the 5th resistance, the 6th resistance, third capacitor, the 4th capacitor,
The tie point of the second voltage-stabiliser tube, the 4th triode, the 4th resistance one end and the 5th resistance one end is the input of linear voltage-stabilizing circuit
End, the 4th resistance other end connect the 6th resistance one end, third capacitor one end, the second pressure stabilizing tube cathode, the 4th transistor base,
The 6th resistance other end connects the third capacitor other end, the second pressure stabilizing tube anode, input ground, the 5th resistance other end connection the 4th
Transistor collector, the 4th transistor emitter connect the 4th capacitor one end, this tie point is linear voltage-stabilizing circuit output end, the
Four capacitor other ends connection input ground.
Preferably, when input voltage is lower than chip starting voltage, chip provides starting by booster circuit output end voltage
Voltage；When input voltage is higher than chip starting voltage or chip overvoltage protection voltage, chip is by linear voltage-stabilizing circuit output end
Voltage provides starting or operating voltage.
A kind of starting control circuit, for providing supply voltage, including a linear voltage-stabilizing circuit, a boosting electricity for chip
Road, a delay switch circuit, linear voltage-stabilizing circuit are used for the required electricity that normally starts stabilized input voltage to chip and work
Pressure, delay switch circuit and booster circuit are used for the minimum voltage that stabilized input voltage to chip can be started and be worked,
Linear voltage-stabilizing circuit input terminal connects input voltage, and linear voltage-stabilizing circuit output end connects chip feeder ear, delay
Switching circuit input terminal connects input voltage, and delay switch circuit output end connects booster circuit input terminal, booster circuit output
End connection chip feeder ear；Delay switch circuit includes a delay capacitor, and delay capacitor one end connection delay switch circuit is adopted
Sample end, delay capacitor other end connection input ground；
When input voltage is lower than chip starting voltage, chip provides starting voltage by booster circuit output end voltage；When
When input voltage is higher than chip starting voltage or chip overvoltage protection voltage, chip is provided by linear voltage-stabilizing circuit output end voltage
Starting or operating voltage.
The principle of the present invention design: the present invention provides for chip and controls the selection of two kinds of chip power supply modes, has two
Kind control logic utilizes the electricity of one end that the first inductance is connect with the second diode anode in chip controls foot detection booster circuit
Level state, and implement power supply control according to detection level state, when chip detects that there is level in middle inductance one end in booster circuit
When output, chip one, which controls foot, to export a fixed duty ratio in the base stage of third transistor, and control chip selection rises
Volt circuit is as its power supply mode, and when chip does not detect level on the first inductance or exports for zero level, then chip is then
Selection linear voltage-stabilizing circuit is powered.
It is detailed in Fig. 2, concrete operating principle of the invention is described below: when product is switched on, it may appear that following two state:
(1) input voltage is lower than the starting voltage of chip: product booting initial time, the original levels of capacitor C1 are 0, are produced
After product booting, product inputs input voltage, and input voltage makes triode Q1 saturation conduction, charges to capacitor C1, capacitor C1 charging
In the process, the cathode terminal voltage (triode Q1 base terminal voltage) of voltage-stabiliser tube D1 is much smaller than input voltage (triode Q1 emitter
Hold voltage) so that triode Q1 saturation conduction always, triode Q2 is in an off state always, at this time the both ends inductance L1 level
It is zero, chip controls end detects that booster circuit is exported without level, and at this moment chip will select linear voltage-stabilizing circuit to be powered,
But since input voltage is lower than chip starting voltage, linear voltage-stabilizing circuit output voltage can not provide starting electricity also for chip
Pressure, chip can not start at this time.
Through delay after a period of time, input voltage constantly charges to capacitor C1, and voltage-stabiliser tube D1 cathode voltage constantly rises,
When voltage-stabiliser tube D1 cathode voltage rises towards input voltage value, triode Q1 cut-off, triode Q2 saturation conduction, according to electricity
Road connection relationship, chip controls end, which will test inductance L1 and diode D2 tie point, level output, at this moment chip controls foot
BOOST will generate a duty cycle signals in triode Q1 base stage, and the output of control chip selection booster circuit provides starting electricity
Pressure, input voltage can be stabilized to the minimum starting voltage of chip after booster circuit boosts, it is ensured that chip can be opened normally
It is dynamic.
It should be noted that the charging time of capacitor C1 is determined by the value of capacitor C1, resistance R1, resistance R2, according to need
It asks and is designed the charging time appropriate.
(2) when input voltage is higher than chip starting voltage or overvoltage protection voltage: being opened the machine moment in chip, capacitor C2's is first
Beginning level is still 0, Qi Jihou, and triode Q1 is connected in input voltage, and is charged simultaneously to capacitor C2, and triode Q2 is still to cut
Only state, remain unchanged on booster circuit inductance L1 no level output at this time.That is Qi Jihou, inductance L1, which is not detected, in chip level
Output, at this point, the mode that chip will select linear voltage-stabilizing circuit to power；Because input voltage has been higher than chip starting voltage or over-voltage
Voltage is protected, linear voltage-stabilizing circuit passes through the electricity that stabilized input voltage to chip normally can be started and be worked by steady pressure treatment
Pressure, starts at this point, chip will automatically select by the way of linear voltage stabilization.
It should be noted that being higher than chip starting voltage in input voltage or in the case where overvoltage protection voltage, due to
It opens the machine moment, chip is had been selected chip and has selected for being powered using linear voltage-stabilizing circuit, when booster circuit passes through one
After the delay of section time, chip, which is able to detect to obtain booster circuit, level output, this will not produce the power supply mode of chip
Raw to influence, chip will select always linear voltage-stabilizing circuit powered operation.
Capacitor C1 is delay capacitor, provides a delay function for booster circuit, is chip when input voltage is excessively high
Selection Starting mode provides the voltage of a hysteresis, and chip can be made actively to select optimal power supply mode, guarantees starting electricity
Road can normally start in any input voltage point.
The present invention provides two different power supply modes, Neng Gouman in such a way that two kinds of powering modes are in parallel for chip
Foot difference input voltage requirement, selects power supply mode in conjunction with the detection control logic of control chip, while and delay capacitor is added
C1 realizes delayed startup, provides a kind of hysteresis of input voltage, fundamentally solves when input voltage is in two kinds of starting sides
The problem of causing chip that can not play machine when the critical value of formula.
Compared with prior art, the present invention has following remarkable result:
1, the present invention is used in parallel by linear voltage-stabilizing circuit and booster circuit, using two kinds of detection control logics come according to defeated
Enter the difference of voltage to select suitable Starting mode；
2, delay capacitor C1 is added, realizes the hysteresis of input voltage, avoiding input voltage point is just logic control
Critical voltage and cause product rise machine when there is the bad problem of machine；
3, the present invention allows the selection of inductance L1 to become more flexible, and will not receive linear voltage-stabilizing circuit again and play electromechanical stream not
The influence of foot, is more suitable engineering design.
Detailed description of the invention
Fig. 1 is the control mode of existing start-up circuit；
Fig. 2 is a kind of starting control circuit application circuit schematic diagram of the invention；
Fig. 3 is the structure chart of linear voltage-stabilizing circuit of the present invention.
Specific embodiment
First case study on implementation
Fig. 2 illustrates the schematic diagram that the present invention applies, and Fig. 3 is linear voltage-stabilizing circuit structure principle chart.
The present invention has following effect:
1, circuit is simple, and starting ability is strong, can be realized the starting of ultralow input voltage；
2, the present invention is of less demanding to the maximum current output of linear voltage-stabilizing circuit, selects more flexible, boost inductance L1
Selection can more low value, transformation engineers design；
3, delay capacitor C1 is added, realizes the hysteresis of input voltage control, realizes any input voltage under any state
Machine can be normally played under the rate of rise.
Now in conjunction with attached drawing 2, Fig. 3, the working principle of the invention is described as follows:
Each circuit structure in figure are as follows:
Delay switch circuit: resistance R1, R2, R3, capacitor C1, voltage-stabiliser tube D1, triode Q1, triode Q2；
Booster circuit: inductance L1, capacitor C2, triode Q3, diode D2；
Linear voltage-stabilizing circuit: resistance R4, R5, R6, capacitor C3, C4, voltage-stabiliser tube D3, triode Q1；
Each circuit connecting relation are as follows: the one end resistance R1 connects input voltage, triode Q1 collector, triode Q2 transmitting
Pole, the resistance other end connect the one end capacitor C1, voltage-stabiliser tube D1 cathode, the one end resistance R2, and the connection of the capacitor C1 other end inputs ground, surely
Pressure pipe D1 anode connection ground, resistance R2 other end connecting triode Q1 base stage, triode Q1 collector connecting triode Q2 base stage,
The one end resistance R3, resistance R3 other end connection ground, triode Q2 collector connect the one end inductance L1, the one end capacitor C2, capacitor C2
Other end connection input ground, inductance L1 other end connecting triode Q3 collector, diode D1 anode, triode Q3 emitter connect
Input ground is connect, triode Q3 base stage connects chip controls end BOOST, and diode D1 cathode connects chip feeder ear VCC, resistance R4
One end is connect with the one end resistance R5, and tie point connects input voltage, and the resistance R4 other end connects the one end capacitor C3, resistance R6 mono-
End, voltage-stabiliser tube D3 cathode, triode Q4 base stage, capacitor C3 other end connection input ground, resistance R6 other end connection input ground, surely
Pressure pipe anode connection input ground, resistance R5 other end connecting triode Q4 collector, triode Q4 emitter connect capacitor C2 mono-
End and chip feeder ear, capacitor C2 other end connection input ground.
The working principle of the invention is described in detail in technical solution above.
Compared with prior art, the prior art is electricity that linear voltage-stabilizing circuit and switching circuit parallel connection boost with BOOST again
Road series connection is such as Fig. 1, and either low pressure or when high voltage startup all will first carry out pressure stabilizing then BOOST boosts in this way, starting current
Limitation is just had received, the inductance value of inductance L1 just needs to take very big.And will appear starting current deficiency when transient state plays machine,
The risk that can not start.
And the present invention provides two in such a way that linear voltage stabilization output, booster circuit are exported two kinds of powering modes parallel connections
Kind chip power supply mode, and the detection control logic of control chip is combined to be selected, in circuit, delay capacitor C1 is added and realizes
Delayed startup provides hysteresis function for input voltage, fundamentally solves when input voltage is in two kinds of Starting mode
The problem of causing chip that can not play machine when critical value.
Above the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as to this hair
Bright limitation for those skilled in the art without departing from the spirit and scope of the present invention, can be with
Several improvements and modifications are made, are added outside control for example, band can replace general control chip there are two types of the chip of control logic
The control to realize starting logic is enclosed, these modifications and embellishments should also be considered as the scope of protection of the present invention, protection model of the invention
Enclosing should be defined by the scope defined by the claims..
Claims (9)
1. a kind of starting control method is used for chip power supply control, it is characterised in that: chip controls end detects electricity in booster circuit
Feel the level state of one end, and select chip power supply mode according to the level state of inductance one end in booster circuit: when detecting
There is level output, chip selects to provide supply voltage by the output of booster circuit, and when detecting no level output, chip is selected
Supply voltage is provided by the output of linear voltage-stabilizing circuit.
2. starting control method according to claim 1, feature with: when input voltage starts voltage lower than chip,
Chip controls end detects the level state of inductance one end in booster circuit: if inductance one end is exported without level in detection booster circuit
Or when being zero level, the selected linear voltage regulator circuit of chip time implements power supply, since input voltage is lower than starting voltage, linear voltage stabilization
Output can not start for chip, and chip can not start at this time；After being delayed for a period of time, chip controls end restarts level inspection
It surveys, if still exporting without level in the detection of booster circuit inductance one end, chip continuation is standby not to be started, and keeps cycle detection；Directly
After detecting that there is level output in inductance one end in booster circuit to chip controls end, chip controls end generates PWM duty cycle letter
Number, chip selection is controlled at this time by the output of booster circuit implements power supply；
When input voltage is higher than chip starting voltage or overvoltage protection voltage, linear voltage-stabilizing circuit output is able to maintain that chip starts
And work, whether booster circuit output end no matter is detected whether there is or not level output, chip selects to be implemented by linear voltage-stabilizing circuit
Power supply.
3. a kind of starting control circuit, for providing supply voltage for chip, including a linear voltage-stabilizing circuit, a booster circuit,
One delay switch circuit, linear voltage-stabilizing circuit are used for the required voltage that normally starts stabilized input voltage to chip and work,
The minimum voltage that delay switch circuit and booster circuit are used to that stabilized input voltage to chip can be started and be worked, feature
Be: linear voltage-stabilizing circuit input terminal connects input voltage, and linear voltage-stabilizing circuit output end connects chip feeder ear, delay switch
Circuit input end connects input voltage, and delay switch circuit output end connects booster circuit input terminal, and booster circuit output end connects
Connect chip feeder ear；Delay switch circuit includes a delay capacitor, and delay capacitor one end connects delay switch circuit sampling end,
Delay capacitor other end connection input ground.
4. starting control circuit according to claim 3, it is characterised in that: delay switch circuit further include first resistor,
First voltage-stabiliser tube, second resistance, 3rd resistor, the first triode, the second triode；First resistor one end is delay switch circuit
Input terminal, first resistor one end are also connected with the first transistor emitter and the second transistor emitter, and the first resistor other end connects
Second resistance one end, the first pressure stabilizing tube cathode are connect, this tie point is the sampling end of delay switch circuit, the anode of the first voltage-stabiliser tube
Connection input ground, the second resistance other end connect the first transistor base, and the first transistor collector connects the second triode base
Pole, 3rd resistor one end, 3rd resistor other end connection input ground, the second transistor collector are exported as delay switch circuit
End.
5. starting control circuit according to claim 3, it is characterised in that: booster circuit includes the first inductance, the second electricity
Appearance, third transistor, first diode；As booster circuit input terminal, first inductance one end is also connected with for first inductance one end
Two capacitor one end, second capacitor other end connection input ground, the first inductance other end connect first diode anode, the three or three pole
Pipe collector, third transistor emitter connection ground, third transistor base stage connect chip controls end, and first diode cathode is made
For booster circuit output end.
6. starting control circuit according to claim 5, it is characterised in that: third pole pipe equivalence replacement is metal-oxide-semiconductor, MOS
Drain electrode corresponds to third transistor collector, and metal-oxide-semiconductor source electrode corresponds to third transistor emitter, and metal-oxide-semiconductor grid corresponds to the
Three transistor bases.
7. starting control circuit according to claim 3, it is characterised in that: linear voltage-stabilizing circuit includes the 4th resistance, the
Five resistance, the 6th resistance, third capacitor, the 4th capacitor, the second voltage-stabiliser tube, the 4th triode, the 4th resistance one end and the 5th electricity
The tie point for hindering one end is the input terminal of linear voltage-stabilizing circuit, and the 4th resistance other end connects the 6th resistance one end, third capacitor
One end, the second pressure stabilizing tube cathode, the 4th transistor base, the 6th resistance other end connect the third capacitor other end, the second pressure stabilizing
Tube anode, input ground, the 5th resistance other end connect the 4th transistor collector, and the 4th transistor emitter connects the 4th capacitor
One end, this tie point are linear voltage-stabilizing circuit output end, the 4th capacitor other end connection input ground.
8. starting control circuit according to claim 3, it is characterised in that: when input voltage starts voltage lower than chip
When, chip provides starting voltage by booster circuit output end voltage；When input voltage is higher than chip starting voltage or chip over-voltage
When protecting voltage, chip provides starting or operating voltage by linear voltage-stabilizing circuit output end voltage.
9. a kind of starting control circuit, for providing supply voltage for chip, including a linear voltage-stabilizing circuit, a booster circuit,
One delay switch circuit, linear voltage-stabilizing circuit are used for the required voltage that normally starts stabilized input voltage to chip and work,
The minimum voltage that delay switch circuit and booster circuit are used to that stabilized input voltage to chip can be started and be worked, feature
It is:
Linear voltage-stabilizing circuit input terminal connects input voltage, and linear voltage-stabilizing circuit output end connects chip feeder ear, delay switch
Circuit input end connects input voltage, and delay switch circuit output end connects booster circuit input terminal, and booster circuit output end connects
Connect chip feeder ear；Delay switch circuit includes a delay capacitor, and delay capacitor one end connects delay switch circuit sampling end,
Delay capacitor other end connection input ground；
When input voltage is lower than chip starting voltage, chip provides starting voltage by booster circuit output end voltage；Work as input
When voltage is higher than chip starting voltage or chip overvoltage protection voltage, chip provides starting by linear voltage-stabilizing circuit output end voltage
Or operating voltage.
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| CN201811343675.0A CN109861514B (en) | 2018-11-13 | 2018-11-13 | Starting control method and circuit |
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| CN201811343675.0A CN109861514B (en) | 2018-11-13 | 2018-11-13 | Starting control method and circuit |
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| CN109861514B CN109861514B (en) | 2024-07-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116149758A (en) * | 2023-04-18 | 2023-05-23 | 深圳魔视智能科技有限公司 | Chip starting configuration system |
| WO2023246506A1 (en) * | 2022-06-25 | 2023-12-28 | 广州金升阳科技有限公司 | Starting control circuit and switching power source system |
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| CN103532584A (en) * | 2012-07-03 | 2014-01-22 | 成都市宏山科技有限公司 | Voltage-stabilizing circuit applied to frequency modulation interphone |
| CN107241018A (en) * | 2017-08-08 | 2017-10-10 | 深圳市三旺通信技术有限公司 | A kind of Width funtion input turns low-voltage high-power output circuit and method |
| CN108233693A (en) * | 2018-02-26 | 2018-06-29 | 广州金升阳科技有限公司 | A kind of start-up circuit of ultralow input voltage |
| CN209134297U (en) * | 2018-11-13 | 2019-07-19 | 广州金升阳科技有限公司 | A kind of starting control circuit |
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| WO2023246506A1 (en) * | 2022-06-25 | 2023-12-28 | 广州金升阳科技有限公司 | Starting control circuit and switching power source system |
| CN116149758A (en) * | 2023-04-18 | 2023-05-23 | 深圳魔视智能科技有限公司 | Chip starting configuration system |
| CN116149758B (en) * | 2023-04-18 | 2023-07-28 | 深圳魔视智能科技有限公司 | Chip starting configuration system |
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