CN204576337U - A kind of device utilizing load change signal regulating power device - Google Patents
A kind of device utilizing load change signal regulating power device Download PDFInfo
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- CN204576337U CN204576337U CN201520181328.8U CN201520181328U CN204576337U CN 204576337 U CN204576337 U CN 204576337U CN 201520181328 U CN201520181328 U CN 201520181328U CN 204576337 U CN204576337 U CN 204576337U
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- load
- change signal
- load change
- amplifier
- control switch
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Abstract
The utility model relates to a kind of device utilizing load change signal regulating power device, comprise load and amplifier, also comprise current source, described current source comprises pulse producer, votage control switch and current generating unit, pulse producer is used for producing pulse signal according to load change signal, pulse signal is for controlling the control end of votage control switch, one end ground connection of current generating unit, the input end of another termination votage control switch, the output terminal of votage control switch is connected between load and amplifier, current generating unit produces corresponding current Ib _ a according to load change signal.The technical matters of amplifier regulation output power alone can only be relied in order to solve existing linear voltage regulator, the pulse signal that control signal Vsw (x) when the utility model working load switches produces, the transient response of amplifier speed of linear voltage regulator circuit can be made to switch with load and change, the demand of the system transient response speed change right when load switches can be met.
Description
Technical field
The utility model relates to chip field, and especially a kind of load change signal regulating power device that utilizes is to strengthen the device of linear voltage regulator transient response speed.
Background technology
See Fig. 1, existing linear voltage regulator controls output power device by amplifier, stable output voltage, in different loads situation, by regulation output power device, can guarantee to export constant magnitude of voltage Vout, and can certain current output capability be ensured, R0 and R1 is respectively different loading conditions, and corresponding output current is I0 and I1, Vsw is the control signal that different loads switches.
Within the scope of existing linear voltage regulator fan-out capability, namely when amplifier and loop work are in normal range, transient response speed and the bias current Ib of linear voltage regulator keep proportional relation, when bias current Ib is constant, the transient response of linear voltage regulator is constant, when switching between different loads, linear voltage regulator system needs certain reaction time regulation output power device, therefore can produce Voltage Drop or overshoot.
But existing linear voltage regulator can only rely on amplifier regulation output power device alone, when switching between different loads, existing linear voltage regulator can not along with the switching of load come adaptive system right transient response speed change demand.
Summary of the invention
Can only rely on the technical matters of amplifier regulation output power alone to solve existing linear voltage regulator, the utility model provides a kind of load change signal regulating power device that utilizes to strengthen the device of linear voltage regulator transient response speed.
Technical solution of the present utility model:
A kind of linear voltage regulator utilizing load change signal regulating power device, comprise load and amplifier, its special character is: also comprise current source, described current source comprises pulse producer, votage control switch and current generating unit, described pulse producer is used for producing pulse signal according to load change signal, pulse signal is for controlling the control end of votage control switch, one end ground connection of described current generating unit, the input end of another termination votage control switch, the output terminal of described votage control switch is connected between load and amplifier
Described current generating unit produces corresponding current Ib _ a according to load change signal.
A kind of linear voltage regulator utilizing load change signal regulating power device, comprise at least two loads and amplifier, its special character is: also comprise current source, described current source comprises controller, pulse producer, votage control switch and current generating unit, and described controller is used for carrying out overlap-add procedure at least two load change signal and exports total load change signal to pulse producer; Described pulse producer is used for producing pulse signal according to total load change signal, pulse signal is for controlling the control end of votage control switch, one end ground connection of described current generating unit, the input end of another termination votage control switch, the output terminal of described votage control switch is connected between load and amplifier, and described current generating unit produces corresponding current Ib _ a according to load change signal.
Above-mentioned current generating unit comprises resistance Ra.
A kind of linear voltage regulator utilizing load change signal regulating power device, comprise load and amplifier, its special character is: also comprise current source, described current source comprises pulse producer and metal-oxide-semiconductor Ma, described pulse producer is used for load change signal and produces pulse signal, pulse signal is for controlling the grid end of metal-oxide-semiconductor Ma, and the source ground connection of described metal-oxide-semiconductor Ma, the drain terminal of described metal-oxide-semiconductor Ma connects between load and amplifier.
A kind of linear voltage regulator utilizing load change signal regulating power device, comprise at least two loads and amplifier, its special character is: also comprise current source, described current source comprises controller, pulse producer and metal-oxide-semiconductor Ma, and described controller is used for carrying out overlap-add procedure at least two load change signal and exports total load change signal to pulse producer; Described pulse producer is used for producing pulse signal according to total load change signal, and pulse signal is for controlling the grid end of metal-oxide-semiconductor Ma, and the source ground connection of described metal-oxide-semiconductor Ma, the drain terminal of described metal-oxide-semiconductor Ma connects between load and amplifier.
The advantage that the utility model has:
A kind of current source utilizing load change signal regulating power device that the utility model provides, the pulse signal that control signal Vsw (x) when working load switches produces, the transient response of amplifier speed of linear voltage regulator circuit can be made to switch with load and change, the demand of the system transient response speed change right when load switches can be met, do not increase the consumption of quiescent current simultaneously when system does not have load to switch.
Accompanying drawing explanation
Fig. 1 is existing linear voltage regulator structural representation;
Fig. 2 is structure principle chart of the present utility model;
Fig. 3 is the relation schematic diagram between pulse producer constrained input of the present utility model;
Fig. 4 is the structure principle chart of the utility model embodiment one;
Fig. 5 is the structure principle chart of the utility model embodiment two;
Fig. 6 is the structure principle chart of the embodiment of the present invention three.
Embodiment
See Fig. 2 and Fig. 3, with the variation pattern of load, the transient response speed of linear voltage regulator depends on that current source switches the mode of change with load, the current source that the utility model adopts uses the current Ib _ a switched with load, therefore the condition that this bias current sources can switch according to load is configured, configurable larger pulse width T p when load switching amplitude is larger, or larger bias current Ib_a.Such as: if load R0 and R1 differs plurality magnitude, namely when load current I0 and the I1 exported differs larger, Ib_a can be improved, or make the pulse width T p time longer, or make Vsw pulse height larger, promote transient response speed greatly, ensure to export Vout more stable, to meet the demand of system.Under the hot environment not needing fast transient response speed, make bias current Ib constant or reduce simultaneously, make transient response speed more stable under different voltage, or reach the effect of saving energy consumption.Ib_a can be forward or negative current, direction of current according to load from heavy duty become underloading or from underloading become heavy duty determine.
See Fig. 4, embodiment one of the present utility model adopts single load switching signal Vsw to produce corresponding pulses signal to control votage control switch, utilize resistance Ra to obtain current Ib _ a, Ib_a equals resistance Ra both end voltage divided by resistance, is realized the current source in the utility model by votage control switch.Wherein current source comprises pulse producer, votage control switch, resistance, and described current source is successively by votage control switch, access amplifier output power device.Votage control switch, resistance and pulse producer are existing unit.
See Fig. 5, embodiment two of the present utility model adopts single load switching signal Vsw to produce corresponding pulses signal to control metal-oxide-semiconductor Ma, utilize metal-oxide-semiconductor Ma to obtain the electric current that current Ib _ a, Ib_a equals to flow through metal-oxide-semiconductor Ma, realized the current source in the utility model by metal-oxide-semiconductor.Wherein current source comprises pulse producer, metal-oxide-semiconductor, and described current source is successively by metal-oxide-semiconductor, access amplifier output power device.Metal-oxide-semiconductor can be N-type or P type, and pulse producer is existing unit.
See Fig. 6, embodiment three of the present utility model is that multiple load switching signal Vsw (x) produces pulse signal control votage control switch through controller and pulse producer, load switching signal carrys out the pulse width T p of control wave by controller, utilize and obtain current Ib _ a, Ib_a equals resistance Ra both end voltage divided by resistance, is realized the current source in the utility model by votage control switch.
It is NMOS tube that metal-oxide-semiconductor in above embodiment all adopts.
Claims (5)
1. one kind utilizes the device of load change signal regulating power device, comprise load and amplifier, it is characterized in that: also comprise current source, described current source comprises pulse producer, votage control switch and current generating unit, described pulse producer is used for producing pulse signal according to load change signal, pulse signal is for controlling the control end of votage control switch, one end ground connection of described current generating unit, the input end of another termination votage control switch, the output terminal of described votage control switch is connected between load and amplifier
Described current generating unit produces corresponding current Ib _ a according to load change signal.
2. one kind utilizes the device of load change signal regulating power device, comprise at least two loads and amplifier, it is characterized in that: also comprise current source, described current source comprises controller, pulse producer, votage control switch and current generating unit, and described controller is used for carrying out overlap-add procedure at least two load change signal and exports total load change signal to pulse producer; Described pulse producer is used for producing pulse signal according to total load change signal, pulse signal is for controlling the control end of votage control switch, one end ground connection of described current generating unit, the input end of another termination votage control switch, the output terminal of described votage control switch is connected between load and amplifier, and described current generating unit produces corresponding current Ib _ a according to load change signal.
3. a kind of device utilizing load change signal regulating power device according to claim 1 and 2, is characterized in that: described current generating unit comprises resistance Ra.
4. one kind utilizes the device of load change signal regulating power device, comprise load and amplifier, it is characterized in that: also comprise current source, described current source comprises pulse producer and metal-oxide-semiconductor Ma, described pulse producer is used for load change signal and produces pulse signal, pulse signal is for controlling the grid end of metal-oxide-semiconductor Ma, and the source ground connection of described metal-oxide-semiconductor Ma, the drain terminal of described metal-oxide-semiconductor Ma connects between load and amplifier.
5. one kind utilizes the device of load change signal regulating power device, comprise at least two loads and amplifier, it is characterized in that: also comprise current source, described current source comprises controller, pulse producer and metal-oxide-semiconductor Ma, and described controller is used for carrying out overlap-add procedure at least two load change signal and exports total load change signal to pulse producer; Described pulse producer is used for producing pulse signal according to total load change signal, and pulse signal is for controlling the grid end of metal-oxide-semiconductor Ma, and the source ground connection of described metal-oxide-semiconductor Ma, the drain terminal of described metal-oxide-semiconductor Ma connects between load and amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520181328.8U CN204576337U (en) | 2015-03-27 | 2015-03-27 | A kind of device utilizing load change signal regulating power device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520181328.8U CN204576337U (en) | 2015-03-27 | 2015-03-27 | A kind of device utilizing load change signal regulating power device |
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| Publication Number | Publication Date |
|---|---|
| CN204576337U true CN204576337U (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520181328.8U Withdrawn - After Issue CN204576337U (en) | 2015-03-27 | 2015-03-27 | A kind of device utilizing load change signal regulating power device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104765401A (en) * | 2015-03-27 | 2015-07-08 | 西安华芯半导体有限公司 | Device for adjusting power device through load variation signal |
-
2015
- 2015-03-27 CN CN201520181328.8U patent/CN204576337U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104765401A (en) * | 2015-03-27 | 2015-07-08 | 西安华芯半导体有限公司 | Device for adjusting power device through load variation signal |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 710055 Shaanxi City, Xi'an province high tech Road No. 38, innovation center, A, block, floor 4 Patentee after: XI'AN UNIIC SEMICONDUCTORS Co.,Ltd. Address before: 710055 Shaanxi City, Xi'an province high tech Road No. 38, innovation center, A, block, floor 4 Patentee before: Xi'an Sinochip Semiconductors Co., Ltd. |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20150819 Effective date of abandoning: 20170822 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20150819 Effective date of abandoning: 20170822 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |