CN112600403A - Single-module multi-output power supply system capable of realizing sequential power-on - Google Patents

Single-module multi-output power supply system capable of realizing sequential power-on Download PDF

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Publication number
CN112600403A
CN112600403A CN202011542687.3A CN202011542687A CN112600403A CN 112600403 A CN112600403 A CN 112600403A CN 202011542687 A CN202011542687 A CN 202011542687A CN 112600403 A CN112600403 A CN 112600403A
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power supply
supply system
power
output
unit
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尚伟林
王伟
纪飞
汪渭滨
周健
肖培磊
宣志斌
罗永波
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CETC 58 Research Institute
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/36—Means for starting or stopping converters

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  • Power Engineering (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The invention belongs to the technical field of power management, and particularly relates to a single-module multi-output power system capable of realizing sequential electrificationSSA first power supply system and a first soft start capacitor CSS1A second power supply system and a second soft start capacitor CSS2A third power supply system and a third soft start capacitor CSS3And a fourth power system and a fourth soft start capacitor CSS4(ii) a The power supply system also comprises a power supply port for accessing an external power supply and four power supply output ports for supplying power to a load; in the four-way power supply system, the single-way power supply system comprises an input filtering unit, a power conversion unit, an output filtering unit, a signal acquisition unit, a logic control unit and a soft start unit. The starting time of each power supply system can be set by changing the size of the soft starting capacitor, the output voltage of each power supply system can be set by changing the size of the external adjustable feedback resistor, and the power supply system has higher redundancy, flexibility and reliability。

Description

Single-module multi-output power supply system capable of realizing sequential power-on
Technical Field
The invention belongs to the technical field of power management, and particularly relates to a single-module multi-output power system capable of realizing sequential power-on.
Background
With the continuous development of electronic technology, the performance, integration level and complexity of processors are higher and higher, and in order to improve the stability and reduce power consumption thereof, multi-power-rail power supply technologies, such as CPUs, DSPs, FPGAs, ASICs and the like, are generally adopted at present, and require multiple power supplies to provide different working voltages for processors and registers thereof.
Meanwhile, in some special application occasions, the start time and the power-on sequence of the multi-path power supply have strict requirements, and neglecting the start time and the power-on sequence of the power supply may cause that the processor and other devices cannot work stably and even damage the processor and other devices, so that a single-module multi-path output power supply system capable of realizing sequential power-on is urgently needed to be developed to solve the problems.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a single-module multi-output power supply system capable of realizing sequential electrification, wherein the single-module multi-output power supply system capable of realizing sequential electrification adopts four power supply systems, and the enabling control adopts a cascade structure; the output state of the previous power supply system in the single-module multi-output power supply system controls the enabling state of the next power supply system, and the starting sequence of sequentially electrifying the single-module four-path power supply system is realized; in addition, in the single-module multi-output power supply system, the starting time of each power supply system can be set by changing the size of the soft starting capacitor, the output voltage of each power supply system can be set by changing the size of the external adjustable feedback resistor, and the single-module multi-output power supply system has high redundancy and flexibility and reliability.
The invention is realized by the following technical scheme:
a single-module multi-output power supply system capable of realizing sequential electrification comprises a four-path power supply system and four soft start capacitors CSSA first power supply system and a first soft start capacitor CSS1A second power supply system and a second soft start capacitor CSS2A third power supply system and a third soft start capacitor CSS3And a fourth power system and a fourth soft start capacitor CSS4(ii) a The power supply system also comprises a power supply port for accessing an external power supply and four power supply output ports for supplying power to a load; in the four-way power supply system, the single-way power supply system comprises an input filtering unit, a power conversion unit, an output filtering unit, a signal acquisition unit, a logic control unit, a soft start unit, an output voltage programming unit, an internal compensation unit, a protection unit and a comparison unit;
the input filter unit is provided with an input port for accessing an external power supply and an output port connected with the power conversion unit, and is used for filtering ripples input by the external power supply; the output filtering unit is provided with an input port connected with the power conversion unit and a power supply output port used for supplying power to a load, and is used for filtering ripples output by the power conversion unit; the input port and the output port of the power conversion unit are respectively connected with the output port of the input filter unit and the input port of the output filter unit, and the power conversion unit is used for realizing conversion between two different voltages so as to match load requirements; the signal acquisition unit is used for detecting input and output voltage and current and circuit temperature parameters; the logic control unit is used for controlling the circuit to output voltage and current to match the load requirement; the soft start unit is used for setting the output voltage climbing time; the output voltage programming unit is used for setting an output voltage; the internal compensation unit is used for realizing loop compensation internally; the protection unit is used for realizing overvoltage, overcurrent and overtemperature protection of the power module system; the comparison unit is used for inputting signals andcomparing the reference signals to generate a control signal; the soft start capacitor CSSAnd the soft start unit is connected with the soft start unit of the corresponding power supply system and is used for setting the output voltage climbing time, namely the power supply system start time.
Preferably, the input ends of the four-way power supply system are connected in parallel with a short circuit and then connected to the input port of the power supply module; in the four-way power supply system, an enable port EN1 of the first power supply system is connected to an input port V of a moduleIN1(ii) a The enable port EN2 of the second power supply system is connected to the output status port PG1 of the first power supply system; the enable port EN3 of the third power supply system is connected to the output status port PG2 of the second power supply system; the enable port EN4 of the fourth power supply system is connected to the output status port PG3 of the third power supply system.
Preferably, when the first power system is not started or is not started, the second power system is in a turn-off state; when the second power supply system is not started or is not started, the third power supply system is in a turn-off state; and when the third power supply system is not started or is not started, the fourth power supply system is in a turn-off state.
Preferably, when the input port inputs the voltage VINSimultaneously inputting high level V to the enabling port of the first power systemEN1>VEN-refThe first power supply system is started.
Preferably, when the first power supply system outputs a voltage VOUT1Normal output, VPG1The output is high level and is used as a second power supply system enabling signal VEN2When the input is input into the second power supply system, the second power supply system is started.
Preferably, when the second power supply system outputs a voltage VOUT2Normal output, VPG2The output is high level and is used as a third power system enable signal VEN3And inputting the input into the third power supply system, and starting the third power supply system.
Preferably, when the third power supply system outputs a voltage VOUT3Normal output, VPG3The output is high level and is used as a fourth power system enabling signalNumber VEN4And inputting the input signal into the fourth power supply system, and starting the fourth power supply system.
Preferably, the soft start capacitance C can be changedSSThe size of the power supply system realizes the setting of the starting time of the corresponding power supply system so as to adapt to the requirement of the starting time of the load.
Preferably, the output voltage programming unit includes an internal feedback resistor RF1External adjustable feedback resistor RF2And a leading feedback capacitor CFFThe internal feedback resistor RF1With an external adjustable feedback resistor RF2Series, leading feedback capacitor CFFAnd an internal feedback resistor RF1Parallel, external adjustable feedback resistor RF2The lower end is grounded.
Preferably, the external adjustable feedback resistance R can be changedF2The output voltage of the corresponding power supply system is set to adapt to the requirement of the load on the power supply voltage.
The invention has the beneficial effects that:
the single-module multi-output power system capable of realizing sequential electrification adopts four power systems, and the cascade structure is adopted for enabling control; the output state of the previous power supply system in the single-module multi-output power supply system controls the enabling state of the next power supply system, and the starting sequence of sequentially electrifying the single-module four-path power supply system is realized;
in addition, in the single-module multi-output power supply system, the starting time of each power supply system can be set by changing the size of the soft starting capacitor, the output voltage of each power supply system can be set by changing the size of the external adjustable feedback resistor, and the single-module multi-output power supply system has high redundancy and flexibility and reliability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of a single-module multiple-output power system according to the present invention;
FIG. 2 is a sequential power-up flow diagram of a single-module multiple-output power system according to the present invention;
FIG. 3 is a schematic diagram of a single-module multiple-output power system according to the present invention;
FIG. 4 is a schematic block diagram of an output voltage programming unit according to the present invention;
FIG. 5 is a waveform diagram of a sequential power-up of a single-module multiple-output power system according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
please refer to fig. 1-5: the technical scheme of the invention particularly provides a single-module multi-output power supply system capable of realizing sequential electrification, which is provided with a power supply port for accessing an external power supply and four power supply output ports for supplying power to a load. The single-module multi-output power supply system comprises a four-way power supply system and four soft start capacitors CSSA first power system 001 and a first soft start capacitor C SS1005. Second power supply system 002 and second soft start capacitor C SS2006. Third power supply system 003 and third soft start capacitor C SS3007 and fourth power system 004 and fourth soft start capacitor C SS4008。
Please continue to refer to FIG. 3: in the four-way power supply system of the single-module multi-way output power supply system, each single-way power supply system comprises an input filtering unit, a power conversion unit, an output filtering unit, a signal acquisition unit, a logic control unit, a soft start unit, an output voltage programming unit, an internal compensation unit, a protection unit and a comparison unit;
the input filter unit is provided with an input port for accessing an external power supply and an output port connected with the power conversion unit, and is used for filtering ripples input by the external power supply; the output filtering unit is provided with an input port connected with the power conversion unit and a power supply output port used for supplying power to a load, and is used for filtering ripples output by the power conversion unit; the input port and the output port of the power conversion unit are respectively connected with the output port of the input filter unit and the input port of the output filter unit, and the power conversion unit is used for realizing conversion between two different voltages so as to match load requirements; the signal acquisition unit is used for detecting input and output voltage and current, circuit temperature and other parameters; the logic control unit is used for controlling the circuit to output voltage and current to match the load requirement; the soft start unit is used for setting the output voltage climbing time; the output voltage programming unit is used for setting an output voltage; the internal compensation unit is used for realizing loop compensation internally; the protection unit is used for realizing overvoltage, overcurrent and overtemperature protection of the power module system; the comparison unit is used for comparing an input signal with a reference signal to generate a control signal; the soft start capacitor CSSAnd the soft start unit is connected with the soft start unit of the corresponding power supply system and is used for setting the output voltage climbing time, namely the power supply system start time.
Specifically, in this embodiment, when the first power system 001 of the single-module multi-output power system capable of implementing sequential power-on is not started or is not started, the second power system 002 is in a shutdown state; if the second power supply system 002 is not started or is not started, the third power supply system 003 is in an off state; if the third power supply system 003 is not started or is not started, the fourth power supply system 004 is in the off state.
Specifically, in this embodiment, the single-module multi-output power system capable of sequentially powering up is as followsAs shown in fig. 1, the input terminals of four power systems in the single-module multi-output power system are connected in parallel and short-circuited, and then connected to the input port of the power module; the enabling port EN1 of the first power supply system 001 in the four-way power supply system of the single-module multi-output power supply system is connected to the input port V of the moduleIN1(ii) a An enable port EN2 of a second power supply system 002 in a four-way power supply system of the single-module multi-output power supply system is connected to an output state port PG1 of a first power supply system 001; the enable port EN3 of the third power supply system 003 in the four-way power supply system of the single-module multi-output power supply system is connected to the output state port PG2 of the second power supply system 002; an enable port EN4 of a fourth power supply system 004 in the four-way power supply system of the single-module multi-output power supply system is connected to an output status port PG3 of the third power supply system 003.
Specifically, in this embodiment, the single-module multi-output power system can be implemented by changing the soft-start capacitor CSSThe size of the power supply voltage can realize the setting of the starting time of the corresponding power supply system so as to adapt to the requirement of the starting time of the load, and the power supply voltage climbing time can be calculated by the following formula:
TSS＝Vref·CSS1/2.5μA
in this embodiment, VrefTake 0.6V.
Specifically, in this embodiment, the present invention further provides a sequential power-on flowchart of a single-module multi-output power system capable of implementing sequential power-on, as shown in fig. 2, where the sequential power-on process includes the following steps:
step 100, inputting voltage V to the input port of the single-module multi-output power supply systemINSimultaneously inputting high level V to the enabled port of the first power system 001EN1>VEN-refThe first power supply system 001 is started, and the first power supply voltage ramp-up time is:
TSS1＝0.6·CSS1/2.5μA
in the present embodiment, where VEN-ref＝1.2V。
Step 200, when the first power system 001 outputs the voltage VOUT1The normal output is carried out, and the output is,VPG1output is high level and is used as the enabling signal V of the second power system 002EN2Input to the second power supply system 002, the second power supply system 002 is started, and the second power supply voltage rising time:
TSS2＝0.6·CSS2/2.5μA
step 300, when the second power system 002 outputs the voltage VOUT2Normal output, VPG2The output is high level and is used as the enabling signal V of the third power supply system 003EN3Input to the third power supply system 003, the third power supply system 003 is started, and the third power supply voltage rising time:
TSS3＝0.6·CSS3/2.5μA
step 400, when the third power system 003 outputs the voltage VOUT3Normal output, VPG3The output is high level and is used as an enabling signal V of a fourth power supply system 004EN4Input to the fourth power supply system 004, the fourth power supply system 004 starts, the fourth power supply voltage ramp-up time:
TSS4＝0.6·CSS4/2.5μA
in the present embodiment, where VPGFor outputting a status indication signal, when VOUTClimbing to 90%, VPGChange from low level to high level, and VPG>VEN-ref。
Specifically, in this embodiment, the output voltage programming unit includes an external adjustable feedback resistor R as shown in fig. 4F1Internal feedback resistor RF2And a leading feedback capacitor CFFSaid external adjustable feedback resistor RF1And an internal feedback resistor RF2Series, leading feedback capacitor CFFAnd an internal feedback resistor RF2Parallel, external adjustable feedback resistor RF1The lower end is grounded.
Specifically, in this embodiment, the single-module multi-output power system can be implemented by changing the external adjustable feedback resistor RF1The output voltage of the corresponding power supply system is set to adapt to the requirement of the load on the power supply voltage, and the calculation formula is as follows:
VOUT＝Vref·(1+RF2/RF1)
as shown in fig. 5, a waveform curve for power-on in sequence of the single-module multi-output power system of the embodiment is verified;
in the present example, where CSS1＝0.01μF，CSS2＝0.02μF，CSS3＝0.03μF，CSS40.04. mu.F, then TSS1＝2.4ms，TSS2＝4.8ms，TSS3＝7.2ms，TSS4＝9.6ms；RF1＝40.2kΩ，RF260.4k Ω, then VOUT＝1.5V。
The single-module multi-output power system capable of realizing sequential electrification adopts four power systems, and the cascade structure is adopted for enabling control; the output state of the previous power supply system in the single-module multi-output power supply system controls the enabling state of the next power supply system, and the starting sequence of sequentially electrifying the single-module four-path power supply system is realized; in addition, in the single-module multi-output power supply system, the starting time of each power supply system can be set by changing the size of the soft starting capacitor, the output voltage of each power supply system can be set by changing the size of the external adjustable feedback resistor, and the single-module multi-output power supply system has high redundancy and flexibility and reliability.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A single-module multi-output power supply system capable of realizing sequential power-on is characterized by comprising four power supply systems and four soft start capacitors CSSA first power supply system and a first soft start capacitor CSS1A second power supply system and a second soft start capacitor CSS2And the thirdPower supply system and third soft start capacitor CSS3And a fourth power system and a fourth soft start capacitor CSS4；
The power supply system also comprises a power supply port for accessing an external power supply and four power supply output ports for supplying power to a load;
in the four-way power supply system, the single-way power supply system comprises an input filtering unit, a power conversion unit, an output filtering unit, a signal acquisition unit, a logic control unit, a soft start unit, an output voltage programming unit, an internal compensation unit, a protection unit and a comparison unit;
the input filter unit is provided with an input port for accessing an external power supply and an output port connected with the power conversion unit, and is used for filtering ripples input by the external power supply;
the output filtering unit is provided with an input port connected with the power conversion unit and a power supply output port used for supplying power to a load, and is used for filtering ripples output by the power conversion unit;
the input port and the output port of the power conversion unit are respectively connected with the output port of the input filter unit and the input port of the output filter unit, and the power conversion unit is used for realizing conversion between two different voltages so as to match load requirements;
the signal acquisition unit is used for detecting input and output voltage and current and circuit temperature parameters;
the logic control unit is used for controlling the circuit to output voltage and current to match the load requirement;
the soft start unit is used for setting the output voltage climbing time;
the output voltage programming unit is used for setting an output voltage;
the internal compensation unit is used for realizing loop compensation internally;
the protection unit is used for realizing overvoltage, overcurrent and overtemperature protection of the power module system;
the comparison unit is used for comparing an input signal with a reference signal to generate a control signal;
the soft start capacitor CSSAnd the soft start unit is connected with the soft start unit of the corresponding power supply system and is used for setting the output voltage climbing time, namely the power supply system start time.
2. The single-module multi-output power supply system capable of realizing sequential power-on according to claim 1, wherein the input ends of the four-way power supply system are connected in parallel and short-circuited and then connected to the input port of the power supply module;
in the four-way power supply system, the power supply is controlled by a controller,
wherein the enable port EN1 of the first power supply system is connected to the input port V of the moduleIN1(ii) a The enable port EN2 of the second power supply system is connected to the output status port PG1 of the first power supply system; the enable port EN3 of the third power supply system is connected to the output status port PG2 of the second power supply system; the enable port EN4 of the fourth power supply system is connected to the output status port PG3 of the third power supply system.
3. The single-module multi-output power system capable of realizing sequential power-on according to claim 2, wherein when the first power system is not started or is not started, the second power system is in an off state; when the second power supply system is not started or is not started, the third power supply system is in a turn-off state; and when the third power supply system is not started or is not started, the fourth power supply system is in a turn-off state.
4. The single-module multi-output power supply system capable of realizing sequential power-on according to claim 2, wherein when the input port inputs a voltage VINSimultaneously inputting high level V to the enabling port of the first power systemEN1>VEN-refThe first power supply system is started.
5. The single module multiple output power system capable of achieving sequential power-on according to claim 2, wherein when the first power system outputs a voltage VOUT1Normal output, VPG1The output is high level and is used as a second power supply system enabling signal VEN2When the input is input into the second power supply system, the second power supply system is started.
6. The single module multiple output power system capable of achieving sequential power-on according to claim 2, wherein when the second power system outputs a voltage VOUT2Normal output, VPG2The output is high level and is used as a third power system enable signal VEN3And inputting the input into the third power supply system, and starting the third power supply system.
7. The single module multiple output power system capable of achieving sequential power-on according to claim 2, wherein when the third power system outputs a voltage VOUT3Normal output, VPG3The output is high level and is used as a fourth power supply system enabling signal VEN4And inputting the input signal into the fourth power supply system, and starting the fourth power supply system.
8. The single module multiple output power system capable of performing sequential power-on according to claim 1, wherein the soft start capacitor C is changedSSThe size of the power supply system realizes the setting of the starting time of the corresponding power supply system so as to adapt to the requirement of the starting time of the load.
9. The single-module multi-output power supply system capable of realizing sequential power-on according to claim 1, wherein the output voltage programming unit comprises an internal feedback resistor RF1External adjustable feedback resistor RF2And a leading feedback capacitor CFFThe internal feedback resistor RF1With an external adjustable feedback resistor RF2Series, leading feedback capacitor CFFAnd an internal feedback resistor RF1Parallel, external adjustable feedback resistor RF2The lower end is grounded.
10. Single module multiplex capable of implementing sequential power-up according to claim 9Power supply system, characterized in that said external adjustable feedback resistance R can be changedF2The output voltage of the corresponding power supply system is set to adapt to the requirement of the load on the power supply voltage.
CN202011542687.3A 2020-12-23 2020-12-23 Single-module multi-output power supply system capable of realizing sequential power-on Pending CN112600403A (en)

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Citations (6)

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Publication number Priority date Publication date Assignee Title
CN1777005A (en) * 2004-11-17 2006-05-24 中兴通讯股份有限公司 DC/DC power source aligument circuit capable of controlling power-on time and order
CN102510211A (en) * 2011-11-02 2012-06-20 无锡芯朋微电子有限公司 High-voltage charge pump control circuit
CN102915097A (en) * 2011-08-03 2013-02-06 中兴通讯股份有限公司 Method and device for controlling electrifying sequence
CN105006961A (en) * 2015-07-29 2015-10-28 上海斐讯数据通信技术有限公司 Power on sequence control circuit on multi-channel power supply and method
CN205353830U (en) * 2016-02-03 2016-06-29 西安奇维科技股份有限公司 Circuit of making an uproar that falls towards adjustable low -dropout regulator
CN206686077U (en) * 2017-01-22 2017-11-28 深圳市科美集成电路有限公司 Power circuit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1777005A (en) * 2004-11-17 2006-05-24 中兴通讯股份有限公司 DC/DC power source aligument circuit capable of controlling power-on time and order
CN102915097A (en) * 2011-08-03 2013-02-06 中兴通讯股份有限公司 Method and device for controlling electrifying sequence
CN102510211A (en) * 2011-11-02 2012-06-20 无锡芯朋微电子有限公司 High-voltage charge pump control circuit
CN105006961A (en) * 2015-07-29 2015-10-28 上海斐讯数据通信技术有限公司 Power on sequence control circuit on multi-channel power supply and method
CN205353830U (en) * 2016-02-03 2016-06-29 西安奇维科技股份有限公司 Circuit of making an uproar that falls towards adjustable low -dropout regulator
CN206686077U (en) * 2017-01-22 2017-11-28 深圳市科美集成电路有限公司 Power circuit

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