CN1949120A - Regulating apparatus of output voltage - Google Patents
Regulating apparatus of output voltage Download PDFInfo
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- CN1949120A CN1949120A CN 200510112750 CN200510112750A CN1949120A CN 1949120 A CN1949120 A CN 1949120A CN 200510112750 CN200510112750 CN 200510112750 CN 200510112750 A CN200510112750 A CN 200510112750A CN 1949120 A CN1949120 A CN 1949120A
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- voltage
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Abstract
The invention relates to output voltage adjusting device. It includes one voltage conversion and comparison module, one analog-digital conversion module, one accumulation module, one impulse generator, one time sequence generator, one switching module, and one over-charging protective module. It can adjust several output voltages, supply required stable direct current power supply for electric installation.
Description
Technical field
The present invention relates to a kind of adjusting gear of output voltage, refer in particular to the device of a kind of adjustment and output dc voltage.
Background technology
(for example chip) needs to supply with more than one at least direct supply usually in electronic installation; and in this chip; owing to consider factors such as operating voltage and consumed power, can use several DC current source usually, for example 5V, 3.3V, 2.5V and 1.8V.General common have linear voltage regulator (linearregulator) and changeover voltage adjuster (switch regulator), linear voltage regulator is used in usually and needs precisely voltage and needn't consider under the situation of consumed power, and changeover voltage adjuster then is applicable to need be considered consumed power and do not need under the situation of accurate voltage.
In addition, in order to take into account the demand of consumed power and accurate voltage simultaneously, can adopt direct current to dc rectifier (DC to DC Converter), with the DC voltage of a direct current voltage transitions to demand, yet this direct current needs several inductance and several control circuits to dc rectifier, and reaching the function of exporting several DC voltage, its result can cause chip size to become problem big and that cost increases.
In order to address the above problem, United States Patent (USP) U.S.6,204, No. 651 patents, provide a kind of method and device, in order to adjust the output voltage (Method And Apparatus ForRegulating An Output Voltage Of A Switch Mode Regulator) of switch type electric voltage converter.At first, this method comparison one a direct current output voltage and a reference voltage and obtain the data information stream of a numeral, this digitized data information stream is handled under a given clock pulse, make this digital data information stream under corresponding clock pulse and produce, then explain this digital data information stream and obtain the numerical data data stream of a charging and the numerical data data stream of a load, come again, at one group of given clock pulse under the cycle, explain the numerical data data stream of the numerical data data stream of this charging and this load and obtain a charging signals and a load signal, at last, in this one group of given clock pulse cycle, according to this charging signals one external module (for example inductance) is charged, and in this one group of given clock pulse cycle, according to this load signal one load (for example electric capacity) is discharged, and reach the function of regulating output voltage.
Yet above-mentioned method can't be handled current-mode (current mode), and in the process of charging, has the problem that overcharges and produce.
Summary of the invention
Fundamental purpose of the present invention provides a kind of adjusting gear of output voltage; be to be used to adjust and the device of output dc voltage; available simple structure reaches the function of several DC voltage of output; the adjusting gear of output voltage of the present invention can be handled current-mode, and has the function that protection overcharges.
In order to reach above-mentioned purpose, the adjusting gear of output voltage of the present invention includes a voltage transitions and comparison module, an analog-to word modules, an accumulator module, a pulse generator, a sequential generator and all die change pieces.Voltage transitions and comparison module are in order to change the DC voltage of desire output and to compare, wherein, this voltage transitions and comparison module comprise that also a voltage changes a current module and a comparison module, it is electric current with voltage transitions that voltage changes current module, and comparison module can be exported several control signals according to comparative result.
The analog-to word modules is to be linked to this voltage transitions and comparison module, and the electric current that this voltage transitions and comparison module are exported transfers numerical data to.Accumulator module is linked to this analog-to word modules, the numerical data of this analog-to word modules output is added up and handles the figure place of numerical data, and this accumulator module is made of a pi controller (PI controller).Pulse generator then is linked to this accumulator module, according to the result of this accumulator module, produces several pulse signals.
Clock generator is linked to this pulse generator and this voltage transitions and comparison module, according to those pulse signals that this pulse generator produced and the comparison judged result of this voltage transitions and comparison module, produces several control signals.Handover module is linked to this clock generator, those control signals that produce according to this clock generator and change-over switch is discharged to one first outside energy storage component charging and one second outside energy storage component, and then regulate this DC voltage.
The adjusting gear of output voltage of the present invention also comprises an over-charge protective module, when this voltage transitions and comparison module detect when this first outside energy storage component overcharged, stops the charging effect of this charging assembly.
For enabling further to understand feature of the present invention and technology contents, see also following about detailed description of the present invention and accompanying drawing, yet described accompanying drawing only provide with reference to the usefulness of explanation, be not to be used for the present invention is limited.
Description of drawings
Fig. 1 is one of the circuit box synoptic diagram of adjusting gear of the output voltage of the embodiment of the invention; And
Fig. 2 be the embodiment of the invention output voltage adjusting gear the circuit box synoptic diagram two.
Symbol description
10 conversions and comparison module 101 voltages change current module
103 comparison modules, 12 analog-to word modules
121 analog-digital converters, 123 counters
125 digital analog converters, 14 accumulator module
141 code translators, 143 low-pass filters
145 pi controllers (PI controller), 147 averagers
16 pulse generators, 18 clock generators
20 handover modules, 22 over-charge protective modules
VDD
A, VDD
D, VDD
IODC voltage
PM2, P33, P18, P16, N control signal
Q
2, Q
3, Q
4, Q
5Transistor
L
1Inductance
C
1, C
2, C
3Electric capacity
Embodiment
Please refer to illustrated in figures 1 and 2ly, be the circuit box synoptic diagram of the adjusting gear of the output voltage of embodiments of the invention.The adjusting gear of the output voltage of embodiments of the invention is made of a voltage transitions and comparison module 10, an analog-to word modules 12, an accumulator module 14, a pulse generator 16, a sequential generator 18, all die change pieces 20 and an over-charge protective module 22.
Voltage transitions and comparison module 10 are changed in order to the DC voltage that desire is exported and are compared, for example the VDD among the figure
A, VDD
DAnd VDD
IO, this voltage transitions and comparison module 10 comprise that also a voltage changes a current module 101 and a comparison module 103, and it is electric current with voltage transitions that voltage changes current module 101, and therefore the adjusting gear of output voltage of the present invention can be handled current-mode.And this comparison module 103 can utilize a comparer to compare according to input voltage and preset reference value, and determine which voltage to have low level, the result that will compare exports several and controls signal to clock generator 18 simultaneously, for example activation control signal, overcurrent detecting signal or the like.
Analog-to word modules 12 is linked to this voltage transitions and comparison module 10, the electric current that this voltage transitions and comparison module 10 are exported transfers numerical data to, and this analog-to word modules 12 is by an analog-digital converter 121, a counter 123 and a digital analog converter 125.Analog-digital converter 121 is linked to digital analog converter 125, the electric current that analog-digital converter 121 is exported this voltage transitions and comparison module 10 transfers numerical data to, the size that is the signal of the current signal exported by comparative voltage conversion and comparison module 10 and digital analog converter 125 gained is reached, counter 123 is linked to analog-digital converter 121, in order to count the numerical data of these analog-digital converter 121 outputs, during signal that the current signal of being exported when voltage transitions and comparison module 10 is exported greater than digital analog converter 125, counter 123 increases by one, otherwise, then counter 123 reduces one, and digital analog converter 125 is linked to analog-digital converter 121 sum counters 123, the output of this counter 123 is converted to simulating signal, and based on reference current, make the signal after this conversion to restrain fast, in the present embodiment, the figure place of counter 123 is 4.
Accumulator module 14 is linked to this analog-to word modules 12, the numerical data of this analog-to word modules 12 outputs added up and handle the figure place of numerical data, wherein, this accumulator module 14 includes a code translator 141, a low-pass filter 143, a pi controller (PI controller) 145 and one averager 147.The figure place of code translator 141 is 8, be used for deciphering the output digital signal of this analog-to word modules 12, the figure place of low-pass filter 143 is 11, is linked to this code translator 141, is used for filtering the noise of high frequency, the figure place of pi controller (PI controller) 145 is 10, be linked to this low-pass filter 143, in order to this digital signal that adds up, the figure place of averager 147 is 3, be linked to this pi controller 145, in order to adjust figure place.
Pulse generator 16 is linked to this accumulator module 14, is according to the result of these accumulator module 14 accumulative totals, produces several pulse signals.Clock generator 18 then is linked to this pulse generator 14 and this voltage transitions and comparison module 10; the comparison judged result of those pulse signals that produced according to this pulse generator 14 and this voltage transitions and comparison module 10; produce several control signals; be used for controlling the switch of handover module 20 and activate over-charge protective module 22; reach the charge and discharge time sequence control; the stable output of several direct current pressure energies of feasible output; the for example PM2 among the figure, P33, P18, P16 and N, the number of these several control signals can be according to actual utilization decision.
Over-charge protective module 22 is to be linked to the first outside energy storage component L
1Two ends; when this voltage transitions and comparison module 10 detect when overcharging situation; can send signal and produce a control signal PM2, activate over-charge protective module 22, stop this charging assembly (as the first outside energy storage component L by control signal PM2 via clock generator 18
1) the charging effect.
The adjusting gear of output voltage of the present invention has following characteristics:
1. the adjusting gear of output voltage of the present invention can be handled current-mode.
2. the adjusting gear of output voltage of the present invention has the over-charge protective device, can avoid overcharging.
3. the adjusting gear of output voltage of the present invention can be used simple structure, handles several DC voltage simultaneously.
But the above only is a preferable possible embodiments of the present invention, is not so promptly arrests limit protection scope of the present invention, therefore anyly is familiar with this technician in the field of the invention, and variation of being implemented or modification all should belong to claim scope of the present invention.
Claims (20)
1. the adjusting gear of an output voltage is characterized in that, includes:
One voltage transitions and comparison module are in order to change the DC voltage of desire output and to compare;
Wherein, this voltage transitions and comparison module comprise that also a voltage changes a current module and a comparison module, and it is electric current with voltage transitions that this voltage changes current module, and this comparison module can be exported several control signals according to the comparative result of input voltage;
One analog-to word modules is to be linked to this voltage transitions and comparison module, and the electric current that this voltage transitions and comparison module are exported transfers numerical data to;
One accumulator module is to be linked to this analog-to word modules, the numerical data of this analog-to word modules output is added up and handles the figure place of numerical data;
One pulse generator is linked to this accumulator module, is the result according to this accumulator module, produces several pulse signals;
One sequential generator is linked to this pulse generator and this voltage transitions and comparison module, is those pulse signals that produce according to this pulse generator and the comparison judged result of this voltage transitions and comparison module, produces several control signals; And
All die change pieces are linked to this clock generator, are to come change-over switch according to those control signals that this clock generator produces, to regulate this DC voltage.
2. the adjusting gear of output voltage as claimed in claim 1, it is characterized in that: this analog-to word modules includes:
One analog-digital converter, the current signal that this voltage transitions and comparison module are exported transfers numerical data to;
One counter is linked to this analog-digital converter, in order to count the numerical data of this analog-digital converter output; And
One digital analog converter is linked to this analog-digital converter and this counter, and the output of this counter is converted to simulating signal, makes that the signal after this conversion is restrained fast.
3. the adjusting gear of output voltage as claimed in claim 2, it is characterized in that: the figure place of this counter is 4.
4. the adjusting gear of output voltage as claimed in claim 1 is characterized in that, this accumulator module includes:
One code translator is the output digital signal of this analog-to word modules of decoding;
One low-pass filter is linked to this code translator, filters the noise of high frequency;
One pi controller is linked to this low-pass filter, and this digital signal adds up; And
One averager is linked to this pi controller, in order to adjust figure place.
5. the adjusting gear of output voltage as claimed in claim 4, it is characterized in that: the figure place of the output of this code translator is 8.
6. the adjusting gear of output voltage as claimed in claim 4, it is characterized in that: the figure place of the output of this low-pass filter is 11.
7. the adjusting gear of output voltage as claimed in claim 4, it is characterized in that: the figure place of the output of this pi controller is 10.
8. the adjusting gear of output voltage as claimed in claim 4, it is characterized in that: the figure place of the output of this averager is 3.
9. the adjusting gear of output voltage as claimed in claim 1 is characterized in that: this handover module is to be made of several P-MOS transistors and several N-MOS transistors.
10. the adjusting gear of output voltage as claimed in claim 1, it is characterized in that: this handover module more comprises an over-charge protective module, when this voltage transitions and comparison module detect when overcharging situation, stops the charging effect of this charging assembly.
11. the adjusting gear of an output voltage is characterized in that, includes:
One voltage transitions and comparison module are in order to change the DC voltage of desire output and to compare;
Wherein, this voltage transitions and comparison module comprise that also a voltage changes a current module and a comparison module, and it is electric current with voltage transitions that this voltage changes current module, and this comparison module can be exported several control signals according to the comparative result of input voltage;
One analog-to word modules is to be linked to this voltage transitions and comparison module, and the electric current that this voltage transitions and comparison module are exported transfers numerical data to;
One accumulator module is to be linked to this analog-to word modules, the numerical data of this analog-to word modules output is added up and handles the figure place of numerical data;
One pulse generator is linked to this accumulator module, is the result according to this accumulator module, produces several pulse signals;
One sequential generator is linked to this pulse generator and this voltage transitions and comparison module, is those pulse signals that produce according to this pulse generator and the comparison judged result of this voltage transitions and comparison module, produces several control signals; And
All die change pieces are linked to this clock generator, are to come change-over switch according to those control signals that this clock generator produces, to one first outside energy storage component charging and one second outside energy storage component discharge, to regulate this DC voltage.
12. the adjusting gear of output voltage as claimed in claim 11 is characterized in that, this analog-to word modules includes:
One analog-digital converter, the current signal that this voltage transitions and comparison module are exported transfers numerical data to;
One counter is linked to this analog-digital converter, in order to count the numerical data of this analog-digital converter output; And
One digital analog converter is linked to this analog-digital converter and this counter, and the output of this counter is converted to simulating signal, makes that the signal after this conversion is restrained fast.
13. the adjusting gear of output voltage as claimed in claim 11 is characterized in that, this accumulator module includes:
One code translator is the output digital signal of this analog-to word modules of decoding;
One low-pass filter is linked to this code translator, filters the noise of high frequency;
One pi controller is linked to this low-pass filter, and this digital signal adds up; And
One averager is linked to this pi controller, in order to adjust figure place.
14. the adjusting gear of output voltage as claimed in claim 13, it is characterized in that: the figure place of the output of this code translator is 8, the figure place of the output of this low-pass filter is 11, the figure place of the output of this pi controller is 10, and the figure place of the output of this averager is 3.
15. the adjusting gear of output voltage as claimed in claim 11 is characterized in that: this handover module is to be made of several P-MOS transistors and several N-MOS transistors.
16. the adjusting gear of output voltage as claimed in claim 11 is characterized in that: this first outside energy storage component is an inductance.
17. the adjusting gear of output voltage as claimed in claim 11 is characterized in that: this second outside energy storage component is an electric capacity.
18. the adjusting gear of output voltage as claimed in claim 11 is characterized in that: the number of this first outside energy storage component is one.
19. the adjusting gear of output voltage as claimed in claim 11 is characterized in that: the number of this second outside energy storage component is several.
20. the adjusting gear of output voltage as claimed in claim 11 is characterized in that: this handover module also comprises an over-charge protective module, when this voltage transitions and comparison module detect when overcharging situation, stops the charging effect of this charging assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101127509A CN100422899C (en) | 2005-10-12 | 2005-10-12 | Regulating apparatus of output voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101127509A CN100422899C (en) | 2005-10-12 | 2005-10-12 | Regulating apparatus of output voltage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1949120A true CN1949120A (en) | 2007-04-18 |
| CN100422899C CN100422899C (en) | 2008-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101127509A Expired - Fee Related CN100422899C (en) | 2005-10-12 | 2005-10-12 | Regulating apparatus of output voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100422899C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI464414B (en) * | 2013-05-17 | 2014-12-11 | Feeling Technology Corp | A light load current detection system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11272344A (en) * | 1998-03-20 | 1999-10-08 | Fujitsu Ltd | Power supply device and method for controlling power supply circuit |
| US7120407B2 (en) * | 2000-10-02 | 2006-10-10 | Niigata Seimitsu Co., Ltd. | Receiver and its tracking adjusting method |
| CN1184737C (en) * | 2001-09-27 | 2005-01-12 | 义隆电子股份有限公司 | Analog-digital converter |
| JP2004222274A (en) * | 2002-12-27 | 2004-08-05 | Thine Electronics Inc | Analog / digital converter and electronic circuit |
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2005
- 2005-10-12 CN CNB2005101127509A patent/CN100422899C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN100422899C (en) | 2008-10-01 |
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