CN106100323B - Switching power circuit, the method and device that switching power circuit is debugged - Google Patents
Switching power circuit, the method and device that switching power circuit is debugged Download PDFInfo
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- CN106100323B CN106100323B CN201610423069.4A CN201610423069A CN106100323B CN 106100323 B CN106100323 B CN 106100323B CN 201610423069 A CN201610423069 A CN 201610423069A CN 106100323 B CN106100323 B CN 106100323B
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- 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
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/1563—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators without using an external clock
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Control Of Voltage And Current In General (AREA)
Abstract
The method and device that the present invention provides a kind of switching power circuit, debugged to switching power circuit, the switching power circuit, comprising: Switching Power Supply main circuit, the Switching Power Supply main circuit includes switching node；The antihunt circuit being connected between the switching node and ground, the antihunt circuit include the resistor network of multiple resistance compositions and the capacitance network of multiple capacitors composition；Wherein, the resistance value accessed in the antihunt circuit can be adjusted by adjusting the resistor network, and the capacitance accessed in the antihunt circuit can be adjusted by adjusting the capacitance network.The internal structure that the embodiment of the present invention provides transformation switching power circuit realizes the adjustment of the overshoot amplitude of switching node, reduces the design debugging difficulty and area of external circuit.
Description
Technical field
The present invention relates to field of communication technology, particularly relates to a kind of switching power circuit, switching power circuit is adjusted
The method and device of examination.
Background technique
Switching Power Supply is widely used in mobile phone circuit design since high-efficient, output electric current is big.It is carried in addition to platform
DC power supply DCDC, external function module are also required to independent DCDC power supply.Such as to the backlight drive electricity that screen backlight is powered
Road (backlight drive IC), LCM (LCD MODULE) bias supply driving IC, the charging IC to charge the battery etc..
And Switching Power Supply is due to the characteristic of the devices such as its switching characteristic and the inductance used, in addition mobile phone plank area and walking
The limitation of line, the problem of usually will appear some signal qualities.Such as the moment of DCDC starting, switch foot, which usually will appear, is more than
The voltage of IC specification causes to damage IC.
By taking boost circuit (booster circuit) as an example, describe problem producing cause and solution in the prior art.
As shown in Figure 1, the circuit is the corresponding equivalent circuit of booster circuit, it has to be considered that the parasitic capacitance of plank and IC
CPARWith parasitic inductance LPAR.Inductance L1 and the node of two switch (Q1 and D1) connections are known as switching node.Switch lead it
Between, switch ground, diode and output, capacitor and ground between there are parasitic inductance LPAR, diode and FET (field effect transistor
Pipe) there is parasitic capacitance C for itselfPAR.It is often generated due to the effect of parasitic capacitance and parasitic inductance, at switching node big
In the oscillating voltage of 200M.If the voltage amplitude of oscillation is greater than the maximum limit of Q1, Q1 will be damaged, while the high frequency vibrating
The raw EMI (electromagnetic interference) that dissipates one's fortune influences whether the IC of attachment.According to the equivalent circuit of Fig. 1, the basic reason of oscillation is parasitic
Caused by parameter, it is (in the unit time electric that the parasitic inductance of SW node line and FET in FET turn-off transient generates biggish di/dt
The variation of stream).Peak voltage is produced due to the presence of parasitic inductance according to formula V=L*di/dt.
There are many amplitudes that measure can reduce oscillation overshoot.For example, IC can choose parasitic capacitance when design
Small FET and diode, the layout of switch and inductance is placed as close as possible to IC when application, to reduce LPAR2And LPAR3；Or
Reduce the distance between FET and power ground, to reduce LPAR1；Or output capacitance is placed as close as possible to diode and power ground,
Reduce LPAR4And LPAR5；Or add the shunt capacitance C of a 0.01uf-2.2uf between output and power groundOUT-BYP。
Due to the C of the IC FET being internally integratedPAR, LPAR1, LPAR2, LPAR3Value has been fixed from change, and due to plank
Layout and dimensional problem, improving PCB layout may also not accomplish that measure presented above is not necessarily feasible.Therefore, it is recommended that opening
In artis plus snubber circuit (antihunt circuit), energy can be absorbed by antihunt circuit, reduce switch open when due to
The spike waveform that parasitic inductance generates.Snubber circuit by the electric current that is generated to parasitic inductance to a spare road is provided
Diameter, to reduce voltage transient response, inhibit the oscillation that parasitic capacitance then generates when switching opening.In Fig. 1, RSNUBAnd CSUNB
Antihunt circuit is constituted, the high frequency overshoot for inhibiting SW foot to generate.When practical solution, need to survey by oscillograph to SW foot
The overshoot voltage of starting, then replacement small capacitances go to improve the problem manually.
I.e. the prior art has the following deficiencies:
1, the reason of needs go replacement capacitor and resistance to go to debug manually, and different projects is because of layout and cabling, has and changes
The capacitance of kind effect all may be different, and debugging efficiency reduces；
2, IC can not detect over-voltage, automatic adjustment switch foot amplitude can not be gone, without adaptation function；
3, due to plank consistency the problem of, it is understood that there may be fixed capacity and resistance can not solve the overshoots of certain planks
Amplitude problem.
Summary of the invention
The method and dress debugged the purpose of the present invention is to provide a kind of switching power circuit, to switching power circuit
Set, solve in the prior art can only by manually go replacement capacitor, resistance to adjust switching node amplitude efficiency is lower to ask
Topic.
In order to achieve the above object, on the one hand, the embodiment of the present invention provides a kind of switching power circuit, comprising:
Switching Power Supply main circuit, the Switching Power Supply main circuit includes switching node；
The antihunt circuit being connected between the switching node and ground, the antihunt circuit include the electricity of multiple resistance compositions
Hinder the capacitance network of network and multiple capacitors composition；Wherein,
The resistance value in the antihunt circuit is accessed by adjusting resistor network adjustment, by adjusting the capacitor net
Network adjustment accesses the capacitance in the antihunt circuit.
On the other hand, the embodiment of the present invention also provides a kind of side debugged to switching power circuit as described above
Method, which comprises
Detection switch power circuit starts moment, the instant amplitude value of the switching node of the switching power circuit；
According to the instant amplitude value of switching node described in Switching Power Supply main circuit starting moment, using outside adjustment
Mode adjusts the resistance value that the resistor network accesses in the antihunt circuit and/or the adjustment capacitance network accesses the resistance
Capacitance in Buddhist nun's circuit.
On the other hand, the embodiment of the present invention also provides a kind of dress debugged to switching power circuit as described above
It sets, described device includes:
Detection module starts moment, the wink of the switching node of the switching power circuit for detection switch power circuit
When range value；
Adjust module, for according to the Switching Power Supply main circuit start moment described in switching node instant amplitude value,
The resistance value and/or the adjustment capacitor that the resistor network accesses in the antihunt circuit are adjusted by the way of external adjustment
Capacitance in antihunt circuit described in network insertion.
Above-mentioned technical proposal of the invention at least has the following beneficial effects:
In the switching power circuit of the embodiment of the present invention, the method and device debugged to switching power circuit, pass through
Antihunt circuit in switching power circuit is set as being made of resistor network and capacitance network, is opened using externally measured judgement
Whether the instant amplitude value at artis exceeds preset value, and when exceeding preset value by manually adjust resistor network and/or
Capacitance network come achieve the purpose that adjustment access antihunt circuit access resistance value and/or access capacitance, avoid and debugged
The operation of manual removal, again welding kesistance or capacitor, improves debugging efficiency in journey.
Detailed description of the invention
Fig. 1 shows the composite structural diagrams of switching power circuit in the prior art；
Fig. 2 indicates the composed structure schematic diagram for the switching power circuit that the first embodiment of the present invention provides；
Fig. 3 indicates the basic step for the method debugged to switching power circuit that the second embodiment of the present invention provides
Flow chart；
Fig. 4 indicates the specific example for the method debugged to switching power circuit that the second embodiment of the present invention provides
Flow chart；
Fig. 5 indicates the structural representation for the device debugged to switching power circuit that the third embodiment of the present invention provides
Figure.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
First embodiment
As shown in Fig. 2, the first embodiment of the present invention provides a kind of switching power circuit, comprising:
Switching Power Supply main circuit, the Switching Power Supply main circuit includes switching node；SW；As shown in Fig. 2, Switching Power Supply
Main circuit includes: input power 100, and input power 100 is used for just to switching power circuit and peripheral circuit power supply；Input electricity
Hold 101, input capacitance 101 to input power 100 for being filtered；Inductance 103, inductance 103 are used to be switching power circuit
Store electric current；First switch tube 105 and second switch 106, by adjusting first switch tube 105 and second switch 106
Turn-on time realizes the boosting of voltage；Switching node 104, switching node 104 are inductance 103 and first switch tube 105 and the
The node of two switching tubes 106 connection；Output voltage 108 and output capacitance 109, output capacitance 109 are used for output voltage 108
It is filtered.
The antihunt circuit 20 being connected between the switching node 104 and ground, the antihunt circuit 20 include multiple resistance
The capacitance network of the resistor network of composition and multiple capacitors composition；Wherein,
The resistance value in the antihunt circuit is accessed by adjusting resistor network adjustment, by adjusting the capacitor net
Network adjustment accesses the capacitance in the antihunt circuit.
The antihunt circuit 20 be programmable RC circuit comprising a resistor network and a capacitance network, resistor network by
Multiple resistance compositions, capacitance network are made of multiple capacitors；Access resistance can be changed by changing the connection type of multiple resistance
The resistance value of Buddhist nun's circuit and/or the capacitance for changing access antihunt circuit by the connection type of the multiple capacitors of change.
The first embodiment of the present invention improves switching node overshoot by the way that the internal structure of switching power circuit is transformed, should
Switching power circuit is an integrated circuit；Specifically, RC antihunt circuit is placed on to the inside of integrated circuit in the embodiment of the present invention,
Once the instant amplitude value that debugging module automatically detects switching node is more than specification requirement, connecing for RC antihunt circuit is manually adjusted
Enter resistance value and access capacitance, and then adjusts the overshoot amplitude of switching node, instantaneous width until being adjusted to switching node
Angle value reaches specification requirement, improves the debugging efficiency to switching power circuit.
Second embodiment
Switching power circuit as described above is debugged as shown in figure 3, the second embodiment of the present invention provides one kind
Method, which comprises
Step 301, detection switch power circuit starts moment, the instantaneous amplitude of the switching node of the switching power circuit
Value；As shown in Fig. 2, Switching Power Supply main circuit includes: input power 100, input power 100 is used for just to switching power circuit
And peripheral circuit power supply；Input capacitance 101, input capacitance 101 to input power 100 for being filtered；Inductance 103, inductance
103 for storing electric current for switching power circuit；First switch tube 105 and second switch 106, by adjusting first switch tube
105 and the turn-on time of second switch 106 realize the boosting of voltage；Switching node 104, switching node 104 are inductance 103
The node connected with first switch tube 105 and second switch 106；Output voltage 108 and output capacitance 109, output capacitance
109 for being filtered output voltage 108.
In this step, detection switch power circuit starts the instantaneous amplitude of the switching node of switching power circuit described in moment
When value by the way of external detection, the mode of external detection is alternatively referred to as the mode of manual test, can be by outside
Detection device is realized, will not repeat them here.
Step 302, the instant amplitude value of the switching node according to Switching Power Supply main circuit starting moment, adjusts institute
It states resistance value that resistor network accesses in the antihunt circuit and/or the adjustment capacitance network accesses in the antihunt circuit
Capacitance.The antihunt circuit is programmable RC circuit comprising a resistor network and a capacitance network, resistor network is by multiple
Resistance composition, capacitance network are made of multiple capacitors；Access resistance can be changed by manually changing the connection type of multiple resistance
The resistance value of Buddhist nun's circuit and/or the connection type by manually changing multiple capacitors change the capacitance of access antihunt circuit.
The method that the second embodiment of the present invention provides improves switching node by the way that the internal structure of integrated circuit is transformed
Overshoot；Specifically, RC antihunt circuit is placed on to the inside of integrated circuit in the embodiment of the present invention, once debugging module detects automatically
Instant amplitude value to switching node is more than specification requirement, manually adjusts the access resistance value and access capacitor of RC antihunt circuit
Value, and then the overshoot amplitude of switching node is adjusted, the instant amplitude value until being adjusted to switching node reaches specification requirement, mention
Debugging efficiency of the height to switching power circuit.
Specifically, step 301 in the second embodiment of the present invention, comprising:
Step 3011, the switching power circuit is detected by probe of tester and starts switching power circuit described in moment
The instant amplitude value of switching node.
The external devices of the instant amplitude value of detection switch node are defined in this step, use probe of tester
It is measured.It should be noted that the relatively good implementation for being limited only to second embodiment of the invention in this step, no
For limiting the protection scope of the application.
Further, step 302 in the second embodiment of the present invention, comprising:
Step 3021, if the instant amplitude value of the switching node detected is greater than predetermined amplitude value, the electricity is adjusted
Resistance value and/or the adjustment capacitance network in antihunt circuit described in resistance network insertion access the capacitor in the antihunt circuit
Value.
In the second embodiment of the present invention, the instant amplitude value of detection switch node 104 in the way of external detection, if
The instant amplitude value of the switching node is greater than predetermined amplitude value and then shows the switching node 104 there are overshoot voltages, may
First switch tube 105 or second switch 106 are damaged, while also will affect other neighbouring circuits.
It further, further include an adjustment circuit 30 in above-mentioned switching power circuit of the invention, it can be manually
Or the signal of software mode control adjustment circuit 30, so as to adjust resistance value and/or capacitance；Specifically, the Switching Power Supply
Circuit further includes the first register and the second register；Then adjust the resistance value that the resistor network accesses in the antihunt circuit
And/or adjust the step of capacitance network accesses the capacitance in the antihunt circuit, comprising:
Modify the value of the first register, so modify resistance value that the resistor network accesses in the antihunt circuit and/
Or the value of the second register of modification, and then modify the capacitance network and access the capacitance in the antihunt circuit.Repair manually
The value of the value and/or the second register that change the first register modifies the resistance value and/or capacitance that access antihunt circuit to reach
Purpose.
In the second embodiment of the present invention, the value of the first register of manual modification come control connect with each resistance it is multiple
Switch is to trim the resistance value that the resistor network accesses in the antihunt circuit；Likewise, can also manual modification second post
The value of storage accesses in the antihunt circuit with the multiple switch of each capacitance connection to trim the capacitance network to control
Capacitance.
It should be noted that may not once just be adjusted successfully during manually adjusting resistance value and/or capacitance,
Therefore restarting Switching Power Supply main circuit is both needed to after adjustment every time, re-start the instantaneous amplitude inspection of another switching node
Survey judgement and the adjustment of antihunt circuit.
For example, as shown in figure 4, the second embodiment of the present invention provide method specific step is as follows；
Step 401, Switching Power Supply main circuit starts to start.
Step 402, manual test SW foot overshoot amplitude, the width that amplitude and SW foot including starting moment work normally
Degree.
Step 403, the range value of SW foot is judged, if it exceeds specification requirement amplitude thens follow the steps 404；Otherwise, it executes
Step 408；
Step 404, the register for opening IC interior finds the value of the corresponding register of RC circuit, passes through modification
The value of RC register adjusts RC value, so as to adjust SW foot amplitude.
Step 405, manual modification configuration register value.
Step 406, the value of register is kept, and is come into force.
Step 407, it is again started up circuit, and executes step 402；
Step 408, if the SW foot amplitude measured meets the requirements, the current corresponding register configuration of RC circuit is saved
Value.
Step 409, the configuration that RC corresponds to register is completed.
Step 410, integrated circuit starts to work normally.
The second embodiment of the present invention provides a kind of the instantaneous of the switching node SW starting moment of improvement switching power circuit
The method of amplitude improves switching node overshoot by the way that the internal structure of integrated circuit is transformed；Specifically, in the embodiment of the present invention
RC antihunt circuit is placed on to the inside of integrated circuit, once the instant amplitude value that debugging module automatically detects switching node is more than
Specification requirement manually adjusts the access resistance value and access capacitance of RC antihunt circuit, and then to adjust the overshoot of switching node
Amplitude, the instant amplitude value until being adjusted to switching node reach specification requirement, improve the debugging efficiency to switching power circuit.
To sum up, the second embodiment of the present invention provides a kind of improvement switching power circuit SW foot starting snap switch amplitude
Method improves SW foot overshoot by the way that the internal structure of IC is transformed；RC antihunt circuit is placed on the inside of IC, by register come
The value of RC is modified, and then adjusts the overshoot amplitude of SW foot, reduces the design debugging difficulty and area of external circuit.
3rd embodiment
Switching power circuit as described above is debugged as shown in figure 5, the third embodiment of the present invention provides one kind
Device, described device includes:
Detection module 501 starts moment for detection switch power circuit, the switching node of the switching power circuit
Instant amplitude value；
Module 502 is adjusted, the instantaneous amplitude for the switching node according to Switching Power Supply main circuit starting moment
Value adjusts resistance value and/or the adjustment capacitance network access resistance that the resistor network accesses in the antihunt circuit
Capacitance in Buddhist nun's circuit.
Specifically, detection module 501 described in the third embodiment of the present invention includes:
Detection sub-module starts Switching Power Supply described in moment for detecting the switching power circuit by probe of tester
The instant amplitude value of the switching node of circuit.
Specifically, adjustment module described in the third embodiment of the present invention includes:
Adjusting submodule, if the instant amplitude value for the switching node detected is greater than predetermined amplitude value, adjustment
The resistor network accesses the resistance value in the antihunt circuit and/or the adjustment capacitance network accesses in the antihunt circuit
Capacitance.
Specifically, adjusting submodule described in the third embodiment of the present invention includes:
Unit is trimmed, for modifying the value of the first register, and then the resistor network is modified and accesses the antihunt circuit
In resistance value and/or modify the value of the second register, and then modify the capacitance network and access the electricity in the antihunt circuit
Capacitance.
Pass through the integrated electricity of transformation in the device debugged to switching power circuit that the third embodiment of the present invention provides
The internal structure on road overshoots to improve switching node；Specifically, RC antihunt circuit is placed on integrated circuit in the embodiment of the present invention
Inside, once debugging module automatically detect switching node instant amplitude value be more than specification requirement, manually adjust RC damping
The access resistance value of circuit and access capacitance, and then the overshoot amplitude of switching node is adjusted, until being adjusted to switching node
Instant amplitude value reach specification requirement, improve the debugging efficiency to switching power circuit.
It should be noted that the third embodiment of the present invention provide the device that switching power circuit is debugged be with
The corresponding device of method that switching power circuit is debugged that above-mentioned second embodiment provides, thus it is above-mentioned to Switching Power Supply
All embodiments for the method that circuit is debugged are suitable for the device, and can reach the same or similar beneficial effect.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (4)
1. the method that a kind of pair of switching power circuit is debugged, the switching power circuit includes: Switching Power Supply main circuit, institute
Stating Switching Power Supply main circuit includes switching node；The antihunt circuit being connected between the switching node and ground, the damping
Circuit includes the resistor network of multiple resistance compositions and the capacitance network of multiple capacitors composition, which is characterized in that the method packet
It includes:
Detection switch power circuit starts moment, the instant amplitude value of the switching node of the switching power circuit；
According to the instant amplitude value of switching node described in Switching Power Supply main circuit starting moment, adjusts the resistor network and connect
Enter the resistance value in the antihunt circuit and/or adjusts the capacitance that the capacitance network accesses in the antihunt circuit；
Wherein, the instant amplitude value of the switching node according to Switching Power Supply main circuit starting moment, adjusts the resistance
Resistance value and/or the adjustment capacitance network in antihunt circuit described in network insertion access the capacitance in the antihunt circuit
The step of, comprising:
If the instant amplitude value of the switching node detected is greater than predetermined amplitude value, adjust described in the resistor network access
Resistance value and/or the adjustment capacitance network in antihunt circuit access the capacitance in the antihunt circuit；
Wherein, the switching power circuit further includes the first register and the second register；
The adjustment resistor network accesses resistance value and/or adjustment capacitance network access institute in the antihunt circuit
The step of stating the capacitance in antihunt circuit, comprising:
The value of the first register is modified, and then modifies resistance value and/or repair that the resistor network accesses in the antihunt circuit
Change the value of the second register, and then modifies the capacitance network and access the capacitance in the antihunt circuit.
2. the method as described in claim 1, which is characterized in that the detection switch power circuit starts moment, the switch
The step of instant amplitude value of the switching node of power circuit, comprising:
The wink that the switching power circuit starts the switching node of switching power circuit described in moment is detected by probe of tester
When range value.
3. the device that a kind of pair of switching power circuit is debugged, the switching power circuit includes: Switching Power Supply main circuit, institute
Stating Switching Power Supply main circuit includes switching node；The antihunt circuit being connected between the switching node and ground, the damping
Circuit includes the resistor network of multiple resistance compositions and the capacitance network of multiple capacitors composition, which is characterized in that described device packet
It includes:
Detection module starts moment, the instantaneous width of the switching node of the switching power circuit for detection switch power circuit
Angle value；
Module is adjusted, for the instant amplitude value of the switching node according to Switching Power Supply main circuit starting moment, adjustment
The resistor network accesses the resistance value in the antihunt circuit and/or the adjustment capacitance network accesses in the antihunt circuit
Capacitance；
Wherein, the adjustment module includes:
Adjusting submodule, if the instant amplitude value for the switching node detected is greater than predetermined amplitude value, described in adjustment
The resistance value and/or the adjustment capacitance network that resistor network accesses in the antihunt circuit access the electricity in the antihunt circuit
Capacitance；
The adjusting submodule includes:
Unit is trimmed, for modifying the value of the first register, and then the resistor network is modified and accesses in the antihunt circuit
Resistance value and/or the value for modifying the second register, and then modify the capacitance network and access the capacitance in the antihunt circuit.
4. device as claimed in claim 3, which is characterized in that the detection module includes:
Detection sub-module starts switching power circuit described in moment for detecting the switching power circuit by probe of tester
Switching node instant amplitude value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610423069.4A CN106100323B (en) | 2016-06-15 | 2016-06-15 | Switching power circuit, the method and device that switching power circuit is debugged |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610423069.4A CN106100323B (en) | 2016-06-15 | 2016-06-15 | Switching power circuit, the method and device that switching power circuit is debugged |
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| CN106100323A CN106100323A (en) | 2016-11-09 |
| CN106100323B true CN106100323B (en) | 2019-06-04 |
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| CN108347160A (en) * | 2017-01-24 | 2018-07-31 | 中兴通讯股份有限公司 | A kind of filtering method of DC-DC converter, device and terminal |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101630681A (en) * | 2008-06-30 | 2010-01-20 | 飞兆半导体公司 | Power device having single-chip integrated rc buffer |
| CN203673805U (en) * | 2013-12-18 | 2014-06-25 | Tcl康钛汽车信息服务（深圳）有限公司 | Backlight boost circuit and LED backlight drive circuit capable of reducing EMI radiation |
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| US9230957B2 (en) * | 2013-03-11 | 2016-01-05 | Alpha And Omega Semiconductor Incorporated | Integrated snubber in a single poly MOSFET |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101630681A (en) * | 2008-06-30 | 2010-01-20 | 飞兆半导体公司 | Power device having single-chip integrated rc buffer |
| CN203673805U (en) * | 2013-12-18 | 2014-06-25 | Tcl康钛汽车信息服务（深圳）有限公司 | Backlight boost circuit and LED backlight drive circuit capable of reducing EMI radiation |
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