CN201303292Y - Multi-output power supply - Google Patents
Multi-output power supply Download PDFInfo
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- CN201303292Y CN201303292Y CNU2008201784618U CN200820178461U CN201303292Y CN 201303292 Y CN201303292 Y CN 201303292Y CN U2008201784618 U CNU2008201784618 U CN U2008201784618U CN 200820178461 U CN200820178461 U CN 200820178461U CN 201303292 Y CN201303292 Y CN 201303292Y
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- electric power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
A multi-output power supply comprises a stock power system and a main power system. The main power system comprises a transformer and a rectification output circuit which is connected with the transformer to generate first output power. The power supply further comprises an output timing judgment circuit and a plurality of voltage regulation units, wherein the output timing judgment circuit is connected with the stock power system and the rectification output circuit and is provided with a preset reference level, whether a feedback signal is output or not is determined according to a comparison result of the output timing judgment circuit and the voltage level of the first output power, and each voltage regulation unit is connected with the output timing judgment circuit to obtain the feedback signal, so that the voltage regulation units can be started normally and determine a modulation time point whether the first output power is synchronously modulated into the second output power to be output or not. Therefore, the utility model discloses can control the time difference between first output electric power of output and the second output electric power, make the normal start of main frame.
Description
Technical field
The utility model relates to a kind of multi-output power supply supply, relates in particular to a kind of multi-output power supply supply of adjusting the direct current power output time of different voltages.
Background technology
The specification that computer system is at present general adopts ATX (AdvancedTechnology Extended) mainboard architecture, compared to traditional AT (AdvancedTechnology) mainboard architecture, the characteristics of ATX framework maximum have been to increase the normality supply electric power of 5VSB, and classify 3.3V as standard supply voltage.For supplying the ATX motherboard suitable power supply, power supply unit must possess corresponding electric power fan-out capability, comprises output voltages such as 3.3V, 5V, 12V.
Tradition meets the direct current that the power supply unit of ATX framework utilizes the transformer of AC-DC conversion (AC/DC) directly to produce different voltages and is supplied to the ATX motherboard to use.Yet the direct current power energy conversion efficiency that utilizes AC-DC conversion to go out is not good, does not meet energy-conservation trend at present, and the direct current power instability of output, influences the operate as normal of motherboard unavoidably.Therefore, industry is developed Voltage Regulator Module (Voltage Regulator Module, technology VRM) then.Alternating current-direct current transformer in the power supply unit is only exported the direct current power of 12V, and sets up this VRM circuit in this transformer rear end, makes this 12V direct current power utilize direct current the mode of direct current conversion (DC/DC) to be produced the DC circuit of 5V or 3.3V.Direct current obviously is better than exchanging to direct current conversion (AC/DC) to the energy conversion efficiency of direct current conversion (DC/DC), is therefore effectively used the energy to reach energy-conservation effect.In addition, direct current can also provide more stable low voltage and direct current power to the mode of direct current conversion, helps the stability of motherboard normal operation.
Yet, adopt the power supply unit of VRM circuit, though can promote energy conversion rate, the gap on 12V direct current power and the 5V/3.3V direct current power output time can be caused.As shown in Figure 4, when starting power supply unit, the process t1 time is the direct current power of exportable 12V voltage, the direct current power of 5V/3.3V then must could supplied through the t2 time, that is to say, power supply unit can be supplied the direct current power of 12V and 5V/3.3V voltage, spacing wherein (t1-t2) distance when being also referred to as respectively on t1 and t2 different time points.Under general open state, for guaranteeing that power supply unit is provided effective operating voltage, whether the ATX motherboard can be detected the electric power that power supply unit provides normal, yet, above-mentioned tradition is used the power supply unit of VRM circuit, then can cause the erroneous judgement in the detecting of ATX motherboard, make that computer system can't normal boot-strap because of the time distance (t1-t2) between the different voltage dc power.
The utility model content
Main purpose of the present utility model is to adjust power supply unit and exports time of delay between the direct current power of different voltages, avoids because the erroneous judgement during the detecting power supply and can't normal boot-strap.For reaching above-mentioned purpose, the utility model provides a kind of multi-output power supply supply, be connected in an electric power source and obtain an input electric power, include one and will import a standing electric power system and the main electric power system that power conversions is a standing electric power, this main electric power system includes one and obtains the transformer that this input electric power and pressure regulation form a transformation electric power, and one connects this transformer and this transformation electric power is tuned as the rectifying output circuit of one first output power.This power supply unit also includes an output timing decision circuitry and a plurality of voltage-regulation unit.This output timing decision circuitry is electrically connected at this rectifying output circuit and this standing electric power system respectively, to obtain this first output power and in order to start this standing electric power of this output timing decision circuitry, this output timing decision circuitry has a preset reference position standard, determines whether to export one according to the result with the voltage level comparison of this first output power and feedbacks signal.This a plurality of voltage-regulation unit is electrically connected at this rectifying output circuit, each voltage-regulation unit is obtained respectively from the standing electric power of this standing electric power system and this output timing decision circuitry and back coupling signal, makes this voltage-regulation unit be able to normality and starts and determine one whether this first output power is tuned as the modulation time point that second output power is exported synchronously.
Wherein, be provided with a bleeder circuit between this rectification outlet line and this output timing decision circuitry.This bleeder circuit includes two resistance, utilizes the resistance ratio of these two resistance to adjust the voltage level that this first output power is sent to this output timing decision circuitry.
In the utility model, this output timing decision circuitry has the comparing unit that the voltage level of obtaining this first output power and this preset reference position standard compare, and one provides the voltage source of electric power as this back coupling signal.This comparing unit has the earth terminal of this back coupling signal ground connection of guiding, and this provides electric power to be this standing electric power system as the voltage source of this back coupling signal.Punctual greater than this preset reference position when the voltage level of this first output power, then no-output is somebody's turn to do the back coupling signal; Punctual less than this preset reference position when the voltage level of this first output power, this signal generation unit continues output, and this feedbacks signal to this voltage-regulation unit, stops the carrying out that first output power is converted to second output power.In addition, be provided with a diode between this output timing decision circuitry and this voltage-regulation unit, the anode of this diode is connected in this output timing decision circuitry, and the negative electrode of this diode is connected in this voltage-regulation unit.
The characteristics of multi-output power supply supply of the present utility model are:
1. solved the problem of output time difference between the direct current power that is used in different voltages, as be equipped with the power supply unit of VRM circuit, the utility model is adjusted the time difference of output to each other, avoid when computer system power-on, can't produce the erroneous judgement situation by the detection of motherboard, cause can't normal boot-strap problem.
Description of drawings
Fig. 1 is the circuit box Organization Chart according to multi-output power supply supply one preferred embodiment of the present utility model;
Fig. 2 is the enforcement circuit diagram according to multi-output power supply supply one preferred embodiment of the present utility model;
Fig. 3 is the output voltage sequential schematic diagram according to multi-output power supply supply one preferred embodiment of the present utility model;
Fig. 4 is the sequential schematic diagram that power supply unit is exported 12V, 5V and 3.3V direct current power under the known VRM technology.
Embodiment
Relevant detailed description of the present utility model and technology contents now just cooperate graphic being described as follows:
Seeing also shown in Figure 1ly, is the circuit box Organization Chart of the utility model one preferred embodiment, and as shown in Figure 1: the utility model is a kind of multi-output power supply supply, is connected in an electric power source 10 and obtains an input electric power.This power supply unit includes a standing electric power system 20 and a main electric power system 30, this standing electric power system 20 obtains the input electric power normality that this electric power source 10 provided and is converted into standing electric power 21 outputs, and AC-DC conversion is carried out in this main electric power system 30 under open state, it includes obtains that transformer 31, that this input electric power and pressure regulation form a transformation electric power connects these transformers 31 and the rectifying output circuit 32 that this transformation electric power is tuned as one first output power 321.In addition, this power supply unit also has a plurality of rectifying output circuit 32 of this main electric power system 30 and voltage- regulation unit 33,33a of this standing electric power system 20 of being electrically connected at.In the present embodiment, with two voltage- regulation unit 33,33a as embodiment, the number of stop voltage regulon 33,33a not.This voltage- regulation unit 33,33a obtain the standing electric power 21 that provided by this standing electric power system 20 as driving voltage, this voltage- regulation unit 33,33a normality are possessed has first output power 321 that will be obtained by this rectifying output circuit 32 to be tuned as second output power 331,331a, and this power supply unit is possessed the ability that multiple different voltage output powers are provided.
Since this rectifying output circuit 32 with this transformation electric power be tuned as first output power 321 need through one section pressure rising time (T
R) reach 12V normal voltage position standard, as shown in Figure 3, for controlling the time difference of this first output power 321 and this second output power 331,331a output, in the utility model, each voltage- regulation unit 33,33a are electrically connected to an output timing decision circuitry 34.This output timing decision circuitry 34 obtains this standing electric power 21 and this first output power 321 by the rectification output unit 32 in this standing electric power system 20 and this main electric power system 30 respectively.This standing electric power 21 is as the operating voltage of this output timing decision circuitry 34 of supply, this first output power 321 then is able to a preset reference position that is set in this output timing decision circuitry 34 accurate mutually relatively, be greater than or less than this preset reference position standard according to the voltage level of this first output power 321 and determine whether exporting one and feedback signal and give these voltage- regulation unit 33,33a, this voltage- regulation unit 33,33a are carried out or stop this first output power 321 is tuned as second output power 331,331a.Suppose the accurate 6V of being in preset reference position of this output timing decision circuitry 34, if this output timing decision circuitry 34 is by the voltage level of first output power of obtaining on this rectifying output circuit 32 321 during less than 6V, 34 of this output timing decision circuitry will be exported this back coupling signal to this voltage- regulation unit 33,33a, make this voltage- regulation unit 33,33a stop this first output power 321 is tuned as second output power 331,331a, in present embodiment, the voltage level of this second output power 331,331a is respectively 5V and 3V; If the voltage level of first output power 321 that this output timing decision circuitry 34 is obtained surpasses 6V, 34 of this output timing decision circuitry are ended output, and this feedbacks signal to this voltage- regulation unit 33,33a, therefore, this voltage- regulation unit 33,33a are able to normally this first output power 321 is tuned as second output power 331,331a.Wherein, these output timing decision circuitry 34 these back coupling signals of output make this voltage- regulation unit 33,33a stop this first output power 321 is tuned as the time of second output power 331,331a, are defined as modulation time (T
M), as shown in Figure 3.Therefore, by the time point of this this back coupling signal of output timing decision circuitry 34 outputs, controlled the time difference between this first output power 321 and this second output power 331, the 331a, to meet the demand of rear end electronic load.
Other sees also shown in Figure 2, it is the enforcement circuit diagram of the utility model one preferred embodiment, as shown in Figure 2: after the rectifying output circuit 32 of this main electric power system 30 is obtained transformation electric power by this transformer 31, it is tuned as one first output power 321, this first output power 321 through one pressure rising time (T
R) after, reach normal voltage position standard, carry for corresponding pair for computer system and use.This main electric power system 30 is except supplying these first output powers 321 by this rectifying output circuit 32, can also be by a plurality of this rectifying output circuits 32 that are connected in, and the first obtained output power 321 is tuned as second output power 331, the voltage-regulation unit 33 of 331a, the 33a of different voltage levels.This voltage- regulation unit 33,33a is connected in this standing electric power system 20 and starts to obtain this standing electric power 21, this voltage- regulation unit 33,33a also is connected in this output timing decision circuitry 34 to obtain in order to control this voltage-regulation unit 33, whether 33a is tuned as second output power 331 with this first output power 321, the back coupling signal of 331a, and in this output timing decision circuitry 34 and this voltage-regulation unit 33, be provided with a diode 35 between the 33a, 35a, this diode 35, the anode of 35a is connected in this output timing decision circuitry 34, this diode 35, the negative electrode of 35a is connected in this voltage-regulation unit 33,33a.This output timing decision circuitry 34 includes one will obtain the voltage level of this first output power 321 and the comparing unit 341 that a preset reference position standard 343 compares, and one provides the voltage source of electric power as this back coupling signal.This comparing unit 341 has the earth terminal 342 of this back coupling signal ground connection of guiding, and this provides electric power to be this standing electric power system 20 as the voltage source of this back coupling signal.That is to say that in the present embodiment, this standing electric power system 20 is simultaneously as the starting resistor of this comparing unit 341, and feedback the voltage source of signal as this.When these standing electric power system 20 modulations produce this standing electric power 21, this voltage- regulation unit 33,33a and this comparing unit 341 start because of receiving this standing electric power 21, in addition, also stop the ability that this voltage- regulation unit 33,33a carry out voltage modulation as the standing electric power in this back coupling signal voltage source.First output power 321 that this rectifying output circuit 32 is produced enters before this output timing decision circuitry 34, the bleeder circuit 36 of can flowing through earlier, this bleeder circuit 36 includes two resistance 361,362, utilizes the resistance ratio of these two resistance 361,362 to adjust the voltage level that this first output power 321 is sent to this output timing decision circuitry 34.When obtained first output power 321 of this comparing unit 341 than accurate 343 hours of preset reference position, the back coupling signal that this standing electric power system 20 is provided continues to import this voltage- regulation unit 33,33a by this diode 35,35a, at this moment, this voltage- regulation unit 33,33a stop this first output power 321 is converted to second output power 331,331a.When obtained first output power 321 of this comparing unit 341 is big than preset reference position accurate 343, the back coupling signal that this standing electric power system 20 is provided is by the earth terminal 342 guiding ground connection of this comparing unit 341, make this back coupling signal can't input to this voltage- regulation unit 33,33a, therefore, this voltage- regulation unit 33,33a are able to normally this first output power 321 is tuned as second output power 331,331a.Because this back coupling signal is output synchronously or synchronous ground connection, these voltage- regulation unit 33,33a also as one man carry out the work of voltage modulation, convenient this modulation time (T that controls
M) length.So, the utility model is able to the time by this voltage-regulation unit 33 is adjusted in the generation of this time of delay, 33a exports this second output power 331,331a.
In sum, because multi-output power supply supply of the present utility model can be adjusted the difference on the direct current power output time of different voltages, when the motherboard of computer system is detected in start process, can be therefore and can't normal boot-strap.Therefore the utility model has progressive and meets the important document of applying for utility model patent, so file an application in accordance with the law.
Below the utility model is described in detail, only the above person only is a preferred embodiment of the present utility model, when not limiting the scope that the utility model is implemented.Be that all equalizations of doing according to the utility model application range change and modify etc., all should still belong in the patent covering scope of the present utility model.
Claims (7)
1. multi-output power supply supply, described multi-output power supply supply is connected in an electric power source (10) and obtains an input electric power, it is the standing electric power system (20) and a main electric power system (30) of a standing electric power (21) with described input power conversions that described multi-output power supply supply includes one, described main electric power system (30) includes one and obtains that transformer (31) and that described input electric power and pressure regulation form a transformation electric power connects described transformer (31) and the rectifying output circuit (32) that described transformation electric power is tuned as one first output power (321), it is characterized in that described power supply unit also includes:
One output timing decision circuitry (34), be electrically connected on described rectifying output circuit (32) and described standing electric power system (20) respectively, obtain described first output power (321) and in order to start the described standing electric power (21) of described output timing decision circuitry (34), described output timing decision circuitry (34) has a preset reference position standard (343), determines whether to export one according to the result with the voltage level comparison of described first output power (321) and feedbacks signal; And
A plurality of voltage-regulation unit (33,33a), described a plurality of voltage-regulation unit is electrically connected on described rectifying output circuit (32), each voltage-regulation unit (33,33a) is obtained from the standing electric power (21) of described standing electric power system (20) and described output timing decision circuitry (34) respectively and is feedback signal, makes described voltage-regulation unit (33,33a) be able to normality and starts and determine one whether will described first output power (321) to be tuned as the modulation time point that second output power (331,331a) is exported synchronously.
2. multi-output power supply supply according to claim 1, it is characterized in that, described output timing decision circuitry (34) has the comparing unit (341) that the voltage level of obtaining described first output power (321) and described preset reference position standard (343) compare, and one provides the voltage source of electric power as described back coupling signal.
3. multi-output power supply supply according to claim 2 is characterized in that, described comparing unit (341) has the earth terminal (342) of the described back coupling signal ground connection of a guiding.
4. multi-output power supply supply according to claim 2 is characterized in that, the described electric power that provides is described standing electric power system (20) as the voltage source of described back coupling signal.
5. multi-output power supply supply according to claim 1, it is characterized in that, be provided with a diode (35,35a) between described output timing decision circuitry (34) and the described voltage-regulation unit (33,33a), the anode of described diode (35,35a) is connected in described output timing decision circuitry (34), and the negative electrode of described diode (35,35a) is connected in described voltage-regulation unit (33,33a).
6. multi-output power supply supply according to claim 1 is characterized in that, is provided with a bleeder circuit (36) between described rectifying output circuit (32) and the described output timing decision circuitry (34).
7. multi-output power supply supply according to claim 6, it is characterized in that, described bleeder circuit (36) includes two resistance (361,362), utilizes the resistance ratio of described two resistance (361,362) to adjust the voltage level that described first output power (321) is sent to described output timing decision circuitry (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201784618U CN201303292Y (en) | 2008-11-12 | 2008-11-12 | Multi-output power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201784618U CN201303292Y (en) | 2008-11-12 | 2008-11-12 | Multi-output power supply |
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| Publication Number | Publication Date |
|---|---|
| CN201303292Y true CN201303292Y (en) | 2009-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201784618U Expired - Lifetime CN201303292Y (en) | 2008-11-12 | 2008-11-12 | Multi-output power supply |
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| CN (1) | CN201303292Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017008289A1 (en) * | 2015-07-15 | 2017-01-19 | Dialog Semiconductor Inc. | Power converters with adaptive output voltages |
-
2008
- 2008-11-12 CN CNU2008201784618U patent/CN201303292Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017008289A1 (en) * | 2015-07-15 | 2017-01-19 | Dialog Semiconductor Inc. | Power converters with adaptive output voltages |
| US10181801B2 (en) | 2015-07-15 | 2019-01-15 | Dialog Semiconductor Inc. | Power converters with adaptive output voltages |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090902 |