CN101968668B - Power supply chip and method for adjusting output voltage of same - Google Patents
Power supply chip and method for adjusting output voltage of same Download PDFInfo
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- CN101968668B CN101968668B CN 200910110210 CN200910110210A CN101968668B CN 101968668 B CN101968668 B CN 101968668B CN 200910110210 CN200910110210 CN 200910110210 CN 200910110210 A CN200910110210 A CN 200910110210A CN 101968668 B CN101968668 B CN 101968668B
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Abstract
The invention relates to a power supply chip which comprises a sub power supply module and a feedback voltage setting module, wherein the sub power supply module is used for outputting a voltage, the feedback voltage setting module is electrically connected with the sub power supply module and used for sampling a first feedback voltage according to the output voltage and judging whether a command of adjusting the output voltage is received or not and adjusting the first feedback voltage into a second feedback voltage according to the command of adjusting the output voltage and feeding the second feedback voltage back to the sub power supply module; and the sub power supply module is used for adjusting the output voltage according to the second feedback voltage. The invention also provides a method for adjusting the output voltage of the power supply chip. The power supply chip and the method for adjusting the output voltage of the power supply chip can correct the output voltage of the power supply chip through a simulator, and reduce the peripheral elements of the power supply chip.
Description
Technical field
The present invention relates to the method for power supply chip and output voltage thereof, relate in particular to a kind of method of power supply chip and adjustment power supply chip output voltage of control able to programme.
Background technology
No matter the manufacturer of present power supply chip and power supply chip of a great variety is any power supply chip, all needs to guarantee the accuracy of the voltage of its output.For realizing the accuracy of output voltage, the method for employing is to produce feedback voltage power supply source chip with resistor network to detect in the prior art, and power supply chip is adjusted output voltage according to the result who detects and carried out closed-loop control.As long as output resistance is definite, output voltage also with regard to determine thereupon, can't change output voltage.
For above-mentioned shortcoming, at present by manufacturer in design, adopts mechanical potentiometer or the alternative fixed value resistance of digital regulation resistance to form resistor network.Although the digital regulation resistance of this mode can arrange in the mode of software programming its resistance value.But all being that digital regulation resistance and power supply chip are separated, is two different elements.Figure 1 shows that the fundamental diagram of existing power supply chip.As can be known from Fig. 1, the adjustment to electric power output voltage of existing power supply chip is by external output resistance R1 and R2 output voltage to be carried out dividing potential drop, with the Voltage Feedback after the dividing potential drop to power supply chip.Power supply chip is adjusted output voltage after feedback voltage is compared again.Voltage adjustment mode shown in Figure 1 is the closed loop adjustment, just can stop after meeting the demands up to the output valve of voltage adjusting.Therefore, in voltage adjustment mode shown in Figure 1, when the output valve of voltage does not meet the demands, must adjust the resistance of output resistance and export suitable feedback voltage.At this moment, because resistance is fixed, therefore to mate suitable feedback voltage just relatively more difficult, thereby need to use a plurality of resistance to carry out the serial or parallel connection dividing potential drop and could export suitable feedback voltage, all very inconvenient to debugging and circuit board making.Although aforesaid way has been realized the adjustable of power supply chip output voltage.Must have peripheral configuration circuit could realize Voltage-output but the shortcoming of this mode is power supply chip, not only needing to spend the more time carries out circuit design, and takies the space of circuit board, causes the raising of cost.
Summary of the invention
The object of the present invention is to provide the method that to revise power supply chip and the adjustment power supply chip of output voltage by emulator, reduce the peripheral components of power supply chip.
The invention provides a kind of power supply chip, comprise sub-power module, be used for output voltage; Feedback voltage arranges module, is electrically connected with sub-power module, for first feedback voltage of sampling according to output voltage, judges whether simultaneously to receive the instruction of adjusting output voltage; According to the instruction of adjusting output voltage the first feedback voltage is adjusted into the second feedback voltage, and the second feedback voltage is fed back to sub-power module, described sub-power module is adjusted output voltage according to the second feedback voltage.
Preferably, the mode that above-mentioned sub-power module is adjusted output voltage according to the second feedback voltage is that the second feedback voltage and output voltage are compared, and whether reaches predetermined value to judge output voltage.
Preferably, above-mentioned feedback voltage arranges module and also is used for judging whether to receive the instruction that the scorification silk is processed, and carries out the scorification silk according to the instruction that the scorification silk is processed and process.
Preferably, above-mentioned sub-power module comprises output terminal at least, and the earth terminal corresponding with output terminal, and pressure feedback port.
Preferably, above-mentioned feedback voltage arranges output terminal and earth terminal corresponding to output terminal that module is electrically connected at sub-power module, and pressure feedback port.
Preferably, it is digital regulation resistance that above-mentioned feedback voltage arranges module, described digital regulation resistance comprises the output resistance that is electrically connected with pressure feedback port, control register with the output resistance electric connection, the communication interface that is electrically connected with control register, and the storer that is electrically connected with communication interface.
Preferably, above-mentioned communication interface also is connected with control device, for the instruction of the adjustment output voltage that receives self-control device and the instruction of scorification silk processing.
A kind of method of adjusting the power supply chip output voltage comprises: sub-power module output voltage; Feedback voltage arranges module according to output voltage first feedback voltage of sampling, and judges whether simultaneously to receive the instruction of adjusting output voltage; If receive the instruction of adjusting output voltage, then feedback voltage arranges module and according to the instruction of adjusting output voltage the first feedback voltage is adjusted into the second feedback voltage, and the second feedback voltage fed back to sub-power module, sub-power module is adjusted output voltage according to the second feedback voltage.
Preferably, said method also comprises: if do not receive the instruction of adjusting output voltage, then sub-power module is adjusted output voltage according to the first feedback voltage.
Preferably, the mode that above-mentioned sub-power module is adjusted output voltage according to the second feedback voltage is that sub-power module compares the second feedback voltage and output voltage, whether reaches predetermined value to judge output voltage.
Preferably, the method for above-mentioned adjustment power supply chip output voltage is characterized in that, if output voltage reaches predetermined value, and the voltage after then sub-power module output is adjusted; If output voltage does not reach predetermined value, then sub-power module is adjusted output voltage again according to the second feedback voltage.
Preferably, said method also comprises: feedback voltage arranges module and also judges whether to receive the instruction that the scorification silk is processed, and carries out the processing of scorification silk if receive the instruction of then processing according to the scorification silk, if do not receive, does not then carry out the scorification silk and processes.
The method of the power supply chip among the present invention and adjustment power supply chip output voltage not only can be carried out the scorification silk to digital regulation resistance and be processed, but also can revise the power supply chip output voltage by the emulator of control device, realize the real time modifying of power supply chip output voltage; In addition, digital regulation resistance is integrated in power supply chip inside, reduces the peripheral components of power supply chip, reduce user's design difficulty; Simultaneously power supply chip only needs just can satisfy different voltage customized demand by control device, provides the more easily mode of production for the power supply chip manufacturer carries out customized production to the client of particular requirement.
Description of drawings
Figure 1 shows that the fundamental diagram of existing power supply chip;
Figure 2 shows that the structural representation of a kind of power supply chip embodiment of the present invention;
Figure 3 shows that the structural representation of another kind of power supply chip embodiment of the present invention;
Figure 4 shows that a kind of process flow diagram of adjusting the embodiment of the method for power supply chip output voltage of the present invention;
Figure 5 shows that the another kind of process flow diagram of adjusting the embodiment of the method for power supply chip output voltage of the present invention;
Figure 6 shows that the process flow diagram of the embodiment of the method for another adjustment power supply chip output voltage of the present invention.
The realization of the object of the invention, functional characteristics and advantage are described further with reference to accompanying drawing in connection with embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments technical scheme of the present invention is described in further detail, can be implemented so that those skilled in the art can better understand the present invention also, but illustrated embodiment is not as a limitation of the invention.
Figure 2 shows that the structural representation of a kind of power supply chip embodiment of the present invention.
Feedback voltage arranges the output terminal that module 22 is electrically connected at sub-power module 31, the earth terminal corresponding with output terminal, and pressure feedback port, and feedback voltage arranges module 22 and also is connected with the emulator 101 of control device 10.Feedback voltage arranges module 22 for first feedback voltage of sampling according to output voltage, and judges whether to receive the instruction of adjusting output voltage.When receiving the instruction of adjusting output voltage, feedback voltage arranges module 22 and also is used for according to the instruction of adjusting output voltage the first feedback voltage being adjusted into the second feedback voltage, and the second feedback voltage is fed back to sub-power module 31.Feedback voltage arranges module 22 and also is used for judging whether to receive the instruction that the scorification silk is processed, and carries out the scorification silk according to the instruction that the scorification silk is processed and process.In the present embodiment, adjusting the instruction of output voltage and the instruction of scorification silk processing all is to send to feedback voltage by control device 10 module 22 is set, be provided with emulator 101 in the control device 10, this emulator 101 can issue the instruction corresponding with the output voltage range of sub-power module 31.
When needs were adjusted output voltage, because feedback voltage arranges module 22 second feedback voltage of having sampled, therefore sub-power module 31 also was used for adjusting output voltage according to the second feedback voltage.Whether sub-power module 31 by the second feedback voltage and output voltage are compared, reaches predetermined value to judge output voltage when adjusting output voltage according to the second feedback voltage.If reach predetermined value, then stop to adjust; Then do not proceed to adjust if reach predetermined value, this is the process of a dynamic circulation.
Figure 3 shows that the structural representation of another kind of power supply chip embodiment of the present invention.
In the present embodiment, digital regulation resistance 32 is arranged module 22 as feedback voltage to be used, inner with being integrated into existing power supply chip with serial and parallel communication interface 321 7,8,9 or 10 bit digital formula potentiometers, and the communication interface 321 of digital regulation resistance 32 is drawn out on the external pin of existing power supply chip, in power supply chip shown in Figure 3 30, also provide simultaneously the concrete structure of digital regulation resistance 32, specific as follows:
In the present embodiment, be connected on the emulator 101 with same communication pin by the communication pin with digital regulation resistance 32, so just can adjust the feedback voltage of digital regulation resistance 32 and digital current potential is carried out the processing of scorification silk by control device 10 in the mode of serial or parallel communication.
When needs are adjusted output voltage, the second feedback voltage because digital regulation resistance 32 has been sampled, therefore sub-power module 31 also is used for adjusting output voltage according to the second feedback voltage.Whether sub-power module 31 by the second feedback voltage and output voltage are compared, reaches predetermined value to judge output voltage when adjusting output voltage according to the second feedback voltage.If reach predetermined value, then stop to adjust; Then do not proceed to adjust if reach predetermined value, this is the process of a dynamic circulation.
Be specially, digital regulation resistance 32 comprises the output resistance 323 that is electrically connected with pressure feedback port, the control register 320 that is electrically connected with output resistance 323, the communication interface 321 that is electrically connected with control register 320, and the storer that is electrically connected with communication interface 321.Output resistance 323 is resistor network or swept resistance, but the output voltage of output resistance 323 antithetical phrase power modules 31 carries out dividing potential drop, and the Voltage Feedback that dividing potential drop is obtained is to the pressure feedback port of sub-power module 31,31 pairs of feedback voltages of sub-power module compare and calculate, according to relatively reaching result of calculation output voltage is adjusted, to adjust output voltage stability and accuracy.Digital regulation resistance 32 is with serial or other communication interfaces 321, the potentiometer of resistance size that can be by programmed control output resistance 323, and the precision of its controlling resistance value can be selected according to actual needs.There is in the market 7,8,9 and 10 s' digital regulation resistance 32 to select.Storer is EEPROM (Electrically Erasable Programmable Read Only Memo) (EEPROM) or flash memory (FLASH), can preserve the set parameter value of control register 320 of 10 pairs of digital regulation resistances 32 of control device, lose when power supply chip 30 power down to prevent set parameter value.
In the present embodiment, adjusting the instruction of output voltage and the instruction of scorification silk processing all is the communication interfaces 321 that sent to digital regulation resistance 32 by control device 10, be provided with emulator 101 in the control device 10, this emulator 101 can issue the instruction corresponding with the output voltage range of sub-power module 31.
Figure 4 shows that a kind of process flow diagram of adjusting the embodiment of the method for power supply chip output voltage of the present invention.
In the present embodiment, adjust the power supply chip output voltage by utilizing power supply chip shown in Figure 2 and control device 10, concrete method of adjustment is as follows:
Step S401, sub-power module 31 output voltages.
Step S402, feedback voltage arrange module 22 according to output voltage first feedback voltage of sampling, and judge whether simultaneously to receive the instruction of adjusting output voltage.If receive the instruction of adjusting output voltage, then enter step S403, if do not receive the instruction of adjusting output voltage, then enter step S404.
Step S403, feedback voltage arrange module 22 and according to the instruction of adjusting output voltage the first feedback voltage are adjusted into the second feedback voltage, and the second feedback voltage is fed back to sub-power module 31, then enter step S405.
Step S404, sub-power module 31 is adjusted output voltage according to the first feedback voltage, then enters step S406.
Step S405, sub-power module 31 is adjusted output voltage according to the second feedback voltage, then enters step S406.
Step S406, sub-power module 31 output voltages.
In the present embodiment, can revise the power supply chip output voltage by the emulator 101 of control device 10, realize the real time modifying of power supply chip output voltage; In addition, digital regulation resistance 32 is integrated in power supply chip inside, reduces the peripheral components of power supply chip, reduce user's design difficulty; Simultaneously power supply chip only needs just can satisfy different voltage customized demand by control device 10, provides the more easily mode of production for the power supply chip manufacturer carries out customized production to the client of particular requirement.
Figure 5 shows that the another kind of process flow diagram of adjusting the embodiment of the method for power supply chip output voltage of the present invention.
In the present embodiment, adjust the power supply chip output voltage by utilizing power supply chip shown in Figure 2 and control device 10, concrete method of adjustment is as follows:
Step S501, sub-power module 31 output voltages.
Step S502, feedback voltage arrange module 22 according to output voltage first feedback voltage of sampling, and judge whether simultaneously to receive the instruction of adjusting output voltage.If receive the instruction of adjusting output voltage, then enter step S503, if do not receive the instruction of adjusting output voltage, then enter step S507.
Step S503, feedback voltage arrange module 22 and according to the instruction of adjusting output voltage the parameter value of the second feedback voltage are write the storer that feedback voltage arranges module 22.
Step S504, feedback voltage arrange module 22 according to the parameter value of the second feedback voltage second feedback voltage of sampling, and then the second feedback voltage are fed back to sub-power module 31.
Step S505, sub-power module 31 compares the second feedback voltage and output voltage, whether reaches predetermined value to judge output voltage.If output voltage reaches predetermined value, then enter step S509; If output voltage does not reach predetermined value, then enter step S506.
Step S506, sub-power module 31 is adjusted output voltage according to the second feedback voltage, and returns step S501.
Step S507, sub-power module 31 compares the first feedback voltage and output voltage, whether reaches predetermined value to judge output voltage.
Step S508, sub-power module 31 is adjusted output voltage according to the first feedback voltage, and returns step S501.
Step S509, sub-power module 31 output voltages.
In the present embodiment, can revise power supply chip 20 output voltages by the emulator 101 of control device 10, realize the real time modifying of power supply chip 20 output voltages; In addition, digital regulation resistance 32 is integrated in power supply chip 20 inside, reduces the peripheral components of power supply chip 20, reduce user's design difficulty; Simultaneously power supply chip only needs just can satisfy different voltage customized demand by control device 10, provides the more easily mode of production for the power supply chip manufacturer carries out customized production to the client of particular requirement.
Figure 6 shows that the process flow diagram of the embodiment of the method for another adjustment power supply chip output voltage of the present invention.
In the present embodiment, adjust power supply chip 30 output voltages by utilizing power supply chip shown in Figure 3 30 and control device 10, utilize digital regulation resistance 32 as feedback voltage module 22 to be set, can also realize that digital regulation resistance 32 is carried out the scorification silk to be processed simultaneously, concrete method of adjustment is as follows:
Step S601, sub-power module 31 output voltages.
Step S602, digital regulation resistance 32 judge whether to receive the instruction of adjusting output voltage simultaneously according to output voltage first feedback voltage of sampling.If receive the instruction of adjusting output voltage, then enter step S603, if do not receive the instruction of adjusting output voltage, then enter step S609.
Step S603, digital regulation resistance 32 judge whether to receive the instruction that the scorification silk is processed, if receive the instruction that the scorification silk is processed, then enter step S604, if do not receive the instruction that the scorification silk is processed, then enter step S605.
Step S604, the instruction that digital regulation resistance 32 is processed according to the scorification silk is carried out the scorification silk and is processed.
Step S605, digital regulation resistance 32 write the parameter value of the second feedback voltage according to the instruction of adjusting output voltage the storer of digital regulation resistance 32.
Step S606, then digital regulation resistance 32 feeds back to the second feedback voltage power module 31 according to the parameter value of the second feedback voltage second feedback voltage of sampling.
Step S607, sub-power module 31 compares the second feedback voltage and output voltage, whether reaches predetermined value to judge output voltage.If output voltage reaches predetermined value, then enter step S611; If output voltage does not reach predetermined value, then enter step S608.
Step S608, sub-power module 31 is adjusted output voltage according to the second feedback voltage, and returns step S601.
Step S609, sub-power module 31 compares the first feedback voltage and output voltage, whether reaches predetermined value to judge output voltage, then enters step S611 if arrive predetermined value, if do not reach predetermined value, then enters step S610.
Step S610, sub-power module 31 is adjusted output voltage according to the first feedback voltage, and returns step S501.
Step S611, sub-power module 31 output voltages.
In the present embodiment, not only can carry out the scorification silk to digital regulation resistance 32 and process, but also can revise the power supply chip output voltage by the emulator 101 of control device 10, realize the real time modifying of power supply chip output voltage; In addition, digital regulation resistance 32 is integrated in power supply chip inside, reduces the peripheral components of power supply chip, reduce user's design difficulty; Simultaneously power supply chip only needs just can satisfy different voltage customized demand by control device 10, provides the more easily mode of production for the power supply chip manufacturer carries out customized production to the client of particular requirement.
The above only is the preferred embodiments of the present invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes instructions of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (8)
1. a power supply chip is characterized in that, comprising:
Sub-power module is used for output voltage;
Feedback voltage arranges module, is electrically connected with sub-power module, for first feedback voltage of sampling according to output voltage, judges whether simultaneously to receive the instruction of adjusting output voltage; According to the instruction of adjusting output voltage the first feedback voltage is adjusted into the second feedback voltage, and the second feedback voltage is fed back to sub-power module, described sub-power module is adjusted output voltage according to the second feedback voltage;
Described sub-power module comprises output terminal and the earth terminal corresponding with output terminal at least, and pressure feedback port; Described feedback voltage arranges the output terminal that module is electrically connected at sub-power module, the earth terminal corresponding with output terminal, and pressure feedback port; It is digital regulation resistance that described feedback voltage arranges module, described digital regulation resistance comprises the output resistance that is electrically connected with pressure feedback port, the control register that is electrically connected with output resistance, the communication interface that is electrically connected with control register, and the storer that is electrically connected with communication interface.
2. power supply chip as claimed in claim 1 is characterized in that, the mode that described sub-power module is adjusted output voltage according to the second feedback voltage is that the second feedback voltage and output voltage are compared, and whether reaches predetermined value to judge output voltage.
3. power supply chip as claimed in claim 1 is characterized in that, described feedback voltage arranges module and also is used for judging whether to receive the instruction that the scorification silk is processed, and carries out the scorification silk according to the instruction that the scorification silk is processed and process.
4. such as each described power supply chip of claims 1 to 3, it is characterized in that, described communication interface also is connected with control device, for the instruction of the adjustment output voltage that receives self-control device and the instruction of scorification silk processing.
5. a method of adjusting the power supply chip output voltage is characterized in that, described method comprises:
Sub-power module output voltage;
Feedback voltage arranges module according to output voltage first feedback voltage of sampling, and judges whether simultaneously to receive the instruction of adjusting output voltage;
If receive the instruction of adjusting output voltage, then feedback voltage arranges module and according to the instruction of adjusting output voltage the first feedback voltage is adjusted into the second feedback voltage, and the second feedback voltage fed back to sub-power module, sub-power module is adjusted output voltage according to the second feedback voltage;
If do not receive the instruction of adjusting output voltage, then sub-power module is adjusted output voltage according to the first feedback voltage.
6. the method for adjustment power supply chip output voltage as claimed in claim 5, it is characterized in that, the mode that described sub-power module is adjusted output voltage according to the second feedback voltage is that sub-power module compares the second feedback voltage and output voltage, whether reaches predetermined value to judge output voltage.
7. the method for adjustment power supply chip output voltage as claimed in claim 6 is characterized in that, if output voltage reaches predetermined value, and the voltage after then sub-power module output is adjusted; If output voltage does not reach predetermined value, then sub-power module is adjusted output voltage again according to the second feedback voltage.
8. the method for adjustment power supply chip output voltage as claimed in claim 7, it is characterized in that, also comprise: feedback voltage arranges module and also judges whether to receive the instruction that the scorification silk is processed, if receive, the instruction of then processing according to the scorification silk is carried out the scorification silk and is processed, if do not receive, then do not carry out the scorification silk and process.
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| CN103245904B (en) * | 2012-02-10 | 2016-03-30 | 阿尔卡特朗讯 | A kind of method for test function circuit and device |
| CN102721916A (en) * | 2012-06-29 | 2012-10-10 | 福建星网锐捷网络有限公司 | Power supply voltage-regulating testing device |
| CN105528008B (en) * | 2014-09-30 | 2017-02-15 | 华润矽威科技（上海）有限公司 | A method and a system for adjusting chip output parameters without changing chip pins |
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| CN107607851B (en) * | 2017-08-03 | 2020-05-12 | 硅谷数模半导体（北京）有限公司 | Voltage regulation system and method |
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| CN111857219B (en) * | 2019-04-25 | 2023-06-30 | 益逻触控系统公司 | Self-service device with three-layer system architecture |
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| CN111857222B (en) * | 2020-06-18 | 2022-04-19 | 苏州浪潮智能科技有限公司 | System for power supply voltage regulation |
| CN111913421B (en) * | 2020-08-08 | 2021-09-14 | 苏州喻芯半导体有限公司 | Power supply cabin chip internal performance adjusting structure and adjusting method |
| CN112034213B (en) * | 2020-08-21 | 2023-08-01 | 日立楼宇技术（广州）有限公司 | Test fixture and test system |
| CN113904085A (en) * | 2021-09-13 | 2022-01-07 | 大富科技(安徽)股份有限公司 | Directional coupling circuit, directional coupler debugging circuit and debugging method thereof |
| CN114294465B (en) * | 2021-12-31 | 2024-04-30 | 富奥汽车零部件股份有限公司 | Pressure regulating control device and pressure regulating control method for electromagnetic valve |
| CN114740932B (en) * | 2022-04-22 | 2024-03-15 | 宁波视睿迪光电有限公司 | Output power voltage stabilizing feedback system |
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Address after: 215500 5th floor, building 4, 68 Lianfeng Road, Changfu street, Changshu City, Suzhou City, Jiangsu Province Patentee after: Changshu intellectual property operation center Co.,Ltd. Address before: No.13 caodang Road, Changshu City, Suzhou City, Jiangsu Province Patentee before: Changshu intellectual property operation center Co.,Ltd. |
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Effective date of registration: 20220125 Address after: 215500 No.8, Menglan Road, Changshu City, Suzhou City, Jiangsu Province Patentee after: JIANGSU LEMOTE INFORMATION TECHNOLOGY CO.,LTD. Address before: 215500 5th floor, building 4, 68 Lianfeng Road, Changfu street, Changshu City, Suzhou City, Jiangsu Province Patentee before: Changshu intellectual property operation center Co.,Ltd. |
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