CN107276151B - One kind trimming circuit and battery protection chip - Google Patents
One kind trimming circuit and battery protection chip Download PDFInfo
- Publication number
- CN107276151B CN107276151B CN201710448918.6A CN201710448918A CN107276151B CN 107276151 B CN107276151 B CN 107276151B CN 201710448918 A CN201710448918 A CN 201710448918A CN 107276151 B CN107276151 B CN 107276151B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/006—Calibration or setting of parameters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00306—Overdischarge protection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Protection Of Static Devices (AREA)
Abstract
One kind is provided in the embodiment of the present application trims circuit, the circuit include: be connected in series in trim circuit trim voltage output end and ground it is extreme between the first divider resistance and the second divider resistance, the tie point of first divider resistance and the second divider resistance is as the reference voltage input for trimming circuit；First divider resistance and trimming is connected with the first pad group in parallel, first trims unit and the first auxiliary trimming module between voltage output end；Second divider resistance and ground it is extreme between be connected with concatenated second and trim unit and the second auxiliary trimming module, and, trim unit and second auxiliary trimming module the second pad group in parallel with concatenated second.This programme trims voltage using the threshold value for cooperating adjustment to trim circuit that auxiliary trims resistance and switching tube; so that the threshold value of over voltage vod is trimmed voltage, two-way to trim range consistent; after realizing that the threshold voltage of additives for overcharge protection voltage voc trims accurately, the threshold voltage of discharge prevention voltage vod can also be trimmed accurately.
Description
Technical field
This application involves microelectric techniques, and in particular, to one kind trims circuit and battery protection chip.
Background technique
Additives for overcharge protection and over are one of critical functions of li-ion cell protection, with Li battery protection IC
Development, additives for overcharge protection and over threshold requirement are higher and higher, therefore are usually added into and trim in design protection chip
Threshold deviation caused by circuit is used to adjust because of technological reason makes to protect threshold value more accurate.As shown in Figure 1, traditional trims electricity
It is to divide to obtain by reference voltage vref that road threshold value, which trims voltage V, and divider resistance Ru and Rd is different, and obtained threshold value trims voltage
V is also different.
Pad trim pad is trimmed in order to share, to save chip area, additives for overcharge protection voltage voc and over
Voltage vod by share trim in circuit trim unit R trim1 and Rtrim2 trim resistance, pass through different divider resistances
Ru and Rd trims voltage to obtain the threshold value of different additives for overcharge protection voltage voc and over voltage vod.If overcharge
Protection voltage voc indicates that over voltage vod is used and trimmed circuit using the divider resistance trimmed in circuit with Ru and Rd
In divider resistance Ru ' and Rd ' indicate, in circuit design, usual Rd=Rd ', due to the threshold of over voltage vod
Value is lower than the threshold value of additives for overcharge protection voltage voc, so Ru > Ru '.Due to Ru ' < Ru, Rd '=Rd, so additives for overcharge protection is electric
Press voc consistent with the range that the threshold value of over voltage vod is trimmed toward height, and it is different toward the low range trimmed.I.e. such as Fig. 2
With shown in Fig. 3, the existing circuit that trims trims simulation result, when the twocouese that additives for overcharge protection voltage voc threshold value trims voltage is repaired
When adjusting range almost the same (- 68mv/+73mv), the twocouese that the threshold value of over voltage vod trims voltage trims range
Difference is very big (- 32mv/+68mv), is will lead to as a result, in chip testing, after additives for overcharge protection voltage voc is trimmed accurately, mistake
Trimming for discharge prevention voltage vod will be inaccurate.
Summary of the invention
One kind is provided in the embodiment of the present application and trims circuit and battery protection chip, to solve in the prior art to overcharging
When the threshold value of electric protection voltage voc and the threshold value of over voltage vod are trimmed, the threshold of additives for overcharge protection voltage voc
After threshold voltage trims accurately, the threshold voltage of over voltage vod trims the problem of inaccuracy.
One of to solve above-mentioned technical problem, the present invention provides one kind to trim circuit, which includes: to be connected in series in
Trim circuit trim voltage output end and ground it is extreme between the first divider resistance and the second divider resistance, it is described first partial pressure
The tie point of resistance and the second divider resistance is as the reference voltage input for trimming circuit；
First divider resistance and trimming is connected with the first pad group in parallel, first trims list between voltage output end
Member and the first auxiliary trimming module；
Second divider resistance and ground it is extreme between be connected with concatenated second trim unit and second auxiliary trim mould
Block, and, unit and second auxiliary trimming module the second pad group in parallel are trimmed with concatenated second.
One of to solve above-mentioned technical problem, the present invention provides a kind of battery protection chips, including any as described above
Circuit is trimmed described in.
Beneficial effects of the present invention are as follows:
Herein described technical solution is not influencing the shared phase of additives for overcharge protection voltage voc and over voltage vod
With trim pad trim pad under the premise of, increase only switching tube and auxiliary trim resistance, by control signal to switch
Auxiliary is trimmed resistance and is connected by pipe to be trimmed circuit and is adjusted to circuit is trimmed, and over voltage vod twocouese is repaired
Adjust range consistent, after guaranteeing that the threshold voltage of additives for overcharge protection voltage voc trims accurately, the threshold value of over voltage vod
Voltage can also trim accurately, thus realize additives for overcharge protection voltage voc trim trimmed with over voltage vod it is synchronous
Property and accuracy.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is the schematic diagram that the prior art trims circuit；
Fig. 2 be trim circuit additives for overcharge protection voltage voc using the prior art trim range；
Fig. 3 be trim circuit over voltage vod using the prior art trim range；
Fig. 4 is the schematic diagram of the present invention for trimming circuit；
Fig. 5 trims the first example schematic for trimming unit and the first pad group to be of the present invention；
Fig. 6 is to trim range using trim circuit additives for overcharge protection voltage voc described in this programme；
Fig. 7 is to trim range using trim circuit over voltage vod described in this programme.
Specific embodiment
In order to which technical solution in the embodiment of the present application and advantage is more clearly understood, below in conjunction with attached drawing to the application
Exemplary embodiment be described in more detail, it is clear that described embodiment be only the application a part implement
Example, rather than the exhaustion of all embodiments.It should be noted that in the absence of conflict, embodiment and reality in the application
The feature applied in example can be combined with each other.
Core of the invention thinking be the threshold value of discharge prevention voltage vod is trimmed voltage it is two-way trim range adjust to
Unanimously, i.e., make first to trim unit and second by additional switching device to trim unit generation and trim association, recycle and assist
It trims resistance adjustment and trims the threshold value of circuit output and trim voltage, the threshold value of discharge prevention voltage vod is made to trim the two-way of voltage
Trim that range is consistent, make the threshold voltage of additives for overcharge protection voltage voc adjust it is accurate after, can still make over voltage
The threshold voltage of vod trims accurately, trims to realize that additives for overcharge protection voltage voc is trimmed with over voltage vod
Synchronism and accuracy.
As shown in figure 4, this application discloses one kind to trim circuit, which includes: reference voltage input A1, trims electricity
Press output terminals A 2 and the extreme A3 in ground；It trims and is in series with the first divider resistance Ru and second between voltage output end A2 and the extreme A3 in ground
The tie point of divider resistance Rd, the first divider resistance Ru and the second divider resistance Rd are defeated as the reference voltage for trimming circuit
Enter to hold A1；The first divider resistance Ru and trimming is connected with the first pad group (PADu1 ... in parallel between voltage output end A2
PADun), first the auxiliary trimming module of unit R trim1 and first is trimmed；Between the second divider resistance Rd and the extreme A3 in ground
It is connected with concatenated second and trims the auxiliary trimming module of unit R trim2 and second, and, unit is trimmed with concatenated second
The second pad group (PADd1 ... PADdn) of the auxiliary trimming module parallel connection of Rtrim2 and second.Circuit is trimmed described in this programme to pass through
The connected state for adjusting pad group, will trim unit and is connected into trim and trim voltage to the threshold value of output in circuit and be adjusted, and
It is further that the two-way range that trims of over voltage vod is adjusted to unanimously, to make overcharge using auxiliary trimming module
After protection voltage voc twocouese threshold voltage trims accurately, the threshold voltage of over voltage vod can still trimmed
Accurately.
In the present solution, the first pad group (PADu1 ... PADun) includes: multiple pad PADu, every two adjacent weldering
It is connected between disk PADu by fuse fuse.In the present solution, described first to trim unit R trim1 include: multiple series connections
First trims resistive module Rtrim1_n；One first, which is connected, between every two adjacent pad trims resistive module Rtrim1_
n.Wherein, described first to trim resistive module Rtrim1_n include: that at least one trims resistance；It is described to trim resistance and fuse
Fuse is in parallel, and all to trim resistance parallel with one another.By the resistor coupled in parallel that trims of setting different number, realization is a variety of to trim resistance
Combination, voltage flexibly can be trimmed to the threshold value of output and be adjusted.
In the present solution, the second pad group (PADd1 ... PADdn) includes: multiple pad PADd, every two adjacent weldering
It is connected between disk PADd by fuse fuse.In the present solution, described second to trim unit R trim2 include: multiple series connections
Second trims resistive module Rtrim2_n；Connected between two adjacent pad PADd in multiple pad PADd one it is second auxiliary
Trimming module is helped, one second is all connected between two adjacent pad PADd in remaining pad PADd and trims resistive module
PADd.Wherein, described second to trim resistive module Rtrim2_n include: that at least one trims resistance；It is described to trim resistance and melt
Silk fuse is in parallel, and all to trim resistance parallel with one another.By the resistor coupled in parallel that trims of setting different number, realization is a variety of to trim electricity
The combination of resistance flexibly can trim voltage to the threshold value of output and be adjusted.
Circuit is trimmed in use, accessing high current at pad, access will be needed to trim the first of circuit and trim unit
Its corresponding first is trimmed unit R trim1 by the fusing of fuse fuse corresponding to Rtrim1, other fuse fuse not fused
Short circuit.I.e. as shown in figure 5, by first trim unit R trim1 include 3 group first trim resistive module Rtrim1_n for, if ginseng
Number B represent whether fuse fuses, and fusing is denoted as 1, unblown to be denoted as 0, then first trim unit R trim1 always trim resistance
Are as follows:
Rtrim1=B1*Rtrim1_1+B2*Rtrim1_2+B3*Rtrim1_3
Corresponding fuse fuse as needed in practice to obtain the Rtrim1 of different resistance values, if fuse to be fused
Fuse2, then the high current between pad PADu2 and pad PADu3, flowing through fuse fuse2 makes its fusing, such Rtrim1=
Rtrim1_2.3 trim and can generate 8 kinds of different values for trimming resistance value Rtrim1 in total.Second trims setting for unit R trim2
Meter mode trims that the design method of unit R trim1 is identical, and schematic diagram is similar to Fig. 5 with first, i.e., trims unit with second
For Rtrim2 trims resistive module Rtrim2_n including 3 group second, setting parameter B represents whether fuse fuses, and fusing is denoted as 1,
It is unblown to be denoted as 0, then second trim unit R trim2 always trim resistance are as follows:
Rtrim2=B1*Rtrim2_1+B2*Rtrim2_2+B3*Rtrim2_3
Corresponding fuse fuse as needed in practice to obtain the Rtrim1 of different resistance values, if fuse to be fused
Fuse2, then the high current between pad PADu2 and pad PADu3, flowing through fuse fuse2 makes its fusing, such Rtrim2=
Rtrim2_2.3 trim and can generate 8 kinds of different values for trimming resistance value Rtrim2 in total.
It can be obtained according to the above basic principle:
When not trimming, Rtrim1=0, Rtrim2=0,
When trimming maximum value, Rtrim1 is maximum, Rtrim2=0,
Therefore, it is toward the range that high voltage trims:
When trimming minimum, Rtrim1=0, Rtrim2 are maximum,
Therefore, it is toward the range that low-voltage trims:
Similarly, vod is toward the range that high voltage trims:
Vod is toward the range that low-voltage trims:
Trim that voltage range is inconsistent to ask to overcome tradition to trim the two-way of over voltage vod in circuit
It inscribes, the first auxiliary trimming module and the second auxiliary trimming module is introduced in this programme, specifically,
As shown in figure 4, in the present solution, the first auxiliary trimming module includes: concatenated first switch and the first auxiliary
Trim resistance Rtrim1a.Wherein, first switch uses PMOS tube PM1；The source electrode of the PMOS tube PM1 and trim voltage output
End connection, the drain electrode of the PMOS tube PM1 trim resistance Rtrim1a and connect with the first auxiliary, the grid of the PMOS tube PM1 and
The grid connection of NMOS tube NM1 in second auxiliary trimming module.In the present solution, the second auxiliary trimming module includes: series connection
Second switch and second auxiliary trim resistance Rtrim2a.Wherein, the second switch is NMOS tube NM1；The NMOS tube
The source electrode of NM1 is extremely connect with ground, and the drain electrode of the NMOS tube NM1 trims resistance Rtrim2a with the second auxiliary and connect, described
The grid of NMOS tube NM1 is connect with the grid of PMOS tube PM1 in the first auxiliary trimming module.NMOS tube NM1 is controlled based on OD_CTRL
Signal processed detects the state that trims for currently trimming circuit, and judgement is currently that the threshold value of additives for overcharge protection voltage voc trims
Or the threshold voltage of over voltage vod trims, if currently being trimmed for the threshold voltage of over voltage vod,
PMOS tube PM1 OD_CTRLB based on feedback signal, trims unit for the first auxiliary and is connected into first and trim in unit, makes overdischarge
It is consistent that the twocouese that the threshold value of protection voltage vod trims voltage trims range.At this point, NMOS tube NM1 and PMOS tube PM1 are led
It is logical, then have,
Rtrim1 '=Rtrim1//Rtrim1a, Rtrim2 '=Rtrim2+Rtrim2a
If schemed him shown in 4, trim circuit described in this programme in use, with by adjust trim all-in resistance Rtrim1 ' and
Rtrim2 ' so as to trim the range that voltage is trimmed toward twocouese consistent for the threshold value of over voltage vod, and does not influence
With additives for overcharge protection voltage voc shared when trimming it is identical trim pad, increase only switching tube NMOS tube NM1 and PMOS tube
PM1；Corresponding control signal OD_CTRL and OD_CTRLB；And auxiliary trims resistance Rtrim1a and Rtrim2a, can be realized
Charge protection voltage voc and over voltage vod shares pad and trims, and guarantees that two voltages trimmed two-way trims model
It encloses unanimously, it is more accurate to make to trim.
As shown in Figure 6 and Figure 7, it is trimmed to trim circuit progress additives for overcharge protection voltage voc threshold value described in use this programme
Emulation schematic diagram is trimmed with the threshold value of over voltage vod.It can be seen from the figure that over voltage vod's is double
Direction trims that range is almost the same (- 44mv/+47mv), and the twocouese without influencing additives for overcharge protection voltage voc trims model
(- 69mv/+73mv) is enclosed, design object is reached.
Although the preferred embodiment of the application has been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the application range.
Obviously, those skilled in the art can carry out various modification and variations without departing from the essence of the application to the application
Mind and range.In this way, if these modifications and variations of the application belong to the range of the claim of this application and its equivalent technologies
Within, then the application is also intended to include these modifications and variations.
Claims (10)
1. one kind trims circuit, which is characterized in that the circuit include: be connected in series in trim circuit trim voltage output end and
The first divider resistance and the second divider resistance between ground is extreme, the tie point of first divider resistance and the second divider resistance
As the reference voltage input for trimming circuit；
First divider resistance and trimming be connected between voltage output end the first pad group in parallel, first trim unit and
First auxiliary trimming module；
Second divider resistance and ground it is extreme between be connected with concatenated second trim unit and second auxiliary trimming module, with
And unit and second auxiliary trimming module the second pad group in parallel are trimmed with concatenated second；
The first auxiliary trimming module includes: that concatenated first switch and the first auxiliary trim resistance, and the first switch connects
It is connected to control signal OD_CTRLB；
The second auxiliary trimming module includes: that concatenated second switch and the second auxiliary trim resistance, and the second switch connects
It is connected to control signal OD_CTRL；
It is adjusted by the control signal to circuit is trimmed, so that over voltage twocouese is trimmed range consistent.
2. according to claim 1 trim circuit, which is characterized in that the first pad group includes: multiple pads, and every two
Fuse is connected between a adjacent pad.
3. according to claim 2 trim circuit, which is characterized in that described first to trim unit include: that multiple series connection connect
First connect trims resistive module；
One first, which is connected, between every two adjacent pad trims resistive module.
4. according to claim 3 trim circuit, which is characterized in that described first to trim resistive module include: at least one
It is a to trim resistance；
The resistance that trims is in parallel with fuse, and all to trim resistance parallel with one another.
5. according to claim 1 trim circuit, which is characterized in that the first switch is PMOS tube；
The source electrode of the PMOS tube is connect with voltage output end is trimmed, and the drain electrode of the PMOS tube trims resistance company with the first auxiliary
It connects, the grid of the PMOS tube is connect with the second auxiliary trimming module.
6. according to claim 1 trim circuit, which is characterized in that the second pad group includes: multiple pads, and every two
Fuse is connected between a adjacent pad.
7. according to claim 1 trim circuit, which is characterized in that described second to trim unit include: that multiple series connection connect
Second connect trims resistive module；
One second auxiliary trimming module is connected between two adjacent pads in multiple pads, adjacent two in remaining pad
It is all connected with one second between a pad and trims resistive module.
8. according to claim 7 trim circuit, which is characterized in that described second to trim resistive module include: at least one
It is a to trim resistance；
The resistance that trims is in parallel with fuse, and all to trim resistance parallel with one another.
9. according to claim 1 trim circuit, which is characterized in that the second switch is NMOS tube；
The source electrode of the NMOS tube is extremely connect with ground, and the drain electrode of the NMOS tube trims resistance with the second auxiliary and connect, described
The grid of NMOS tube is connect with the first auxiliary trimming module.
10. a kind of battery protection chip, which is characterized in that trim electricity including described in any item as described in claim 1 to 9
Road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710448918.6A CN107276151B (en) | 2017-06-14 | 2017-06-14 | One kind trimming circuit and battery protection chip |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710448918.6A CN107276151B (en) | 2017-06-14 | 2017-06-14 | One kind trimming circuit and battery protection chip |
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| CN107276151A CN107276151A (en) | 2017-10-20 |
| CN107276151B true CN107276151B (en) | 2019-09-13 |
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| CN201710448918.6A Active CN107276151B (en) | 2017-06-14 | 2017-06-14 | One kind trimming circuit and battery protection chip |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111342786B (en) | 2020-04-21 | 2021-09-21 | 上海类比半导体技术有限公司 | Differential amplifier common mode rejection ratio and gain trimming circuit |
| CN113189478B (en) * | 2020-09-03 | 2023-10-24 | 成都利普芯微电子有限公司 | Chip trimming circuit and trimming method |
| CN113162605B (en) * | 2020-09-03 | 2022-11-01 | 深圳利普芯微电子有限公司 | Chip trimming circuit and trimming method |
| CN117394508B (en) * | 2023-12-13 | 2024-04-02 | 成都利普芯微电子有限公司 | Battery protection packaging body |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2916724Y (en) * | 2006-04-27 | 2007-06-27 | 苏州市华芯微电子有限公司 | High precision voltage reference correcting circuit |
| CN102006017A (en) * | 2010-12-02 | 2011-04-06 | 无锡中普微电子有限公司 | Biasing circuit and power amplifier circuit thereof |
| CN102467144A (en) * | 2010-11-05 | 2012-05-23 | 成都芯源系统有限公司 | Output voltage trimming device and trimming method of voltage regulator |
| CN104298294A (en) * | 2013-07-19 | 2015-01-21 | 中国科学院上海微系统与信息技术研究所 | High-order curvature compensation reference voltage source with modifying function |
| CN105470159A (en) * | 2015-11-17 | 2016-04-06 | 无锡中微腾芯电子有限公司 | Method for monitoring fuse burning yield rate in chip test |
| CN105912059A (en) * | 2016-05-23 | 2016-08-31 | 深圳创维－Rgb电子有限公司 | Reference voltage regulating circuit and system of integrated circuit |
| CN106059497A (en) * | 2016-06-21 | 2016-10-26 | 南开大学 | Design and compensation voltage generation and adjustment method of temperature compensation crystal oscillator |
-
2017
- 2017-06-14 CN CN201710448918.6A patent/CN107276151B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2916724Y (en) * | 2006-04-27 | 2007-06-27 | 苏州市华芯微电子有限公司 | High precision voltage reference correcting circuit |
| CN102467144A (en) * | 2010-11-05 | 2012-05-23 | 成都芯源系统有限公司 | Output voltage trimming device and trimming method of voltage regulator |
| CN102006017A (en) * | 2010-12-02 | 2011-04-06 | 无锡中普微电子有限公司 | Biasing circuit and power amplifier circuit thereof |
| CN104298294A (en) * | 2013-07-19 | 2015-01-21 | 中国科学院上海微系统与信息技术研究所 | High-order curvature compensation reference voltage source with modifying function |
| CN105470159A (en) * | 2015-11-17 | 2016-04-06 | 无锡中微腾芯电子有限公司 | Method for monitoring fuse burning yield rate in chip test |
| CN105912059A (en) * | 2016-05-23 | 2016-08-31 | 深圳创维－Rgb电子有限公司 | Reference voltage regulating circuit and system of integrated circuit |
| CN106059497A (en) * | 2016-06-21 | 2016-10-26 | 南开大学 | Design and compensation voltage generation and adjustment method of temperature compensation crystal oscillator |
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| CN107276151A (en) | 2017-10-20 |
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