CN202166955U - ATX reinforced type computer power supply - Google Patents
ATX reinforced type computer power supply Download PDFInfo
- Publication number
- CN202166955U CN202166955U CN2011202170155U CN201120217015U CN202166955U CN 202166955 U CN202166955 U CN 202166955U CN 2011202170155 U CN2011202170155 U CN 2011202170155U CN 201120217015 U CN201120217015 U CN 201120217015U CN 202166955 U CN202166955 U CN 202166955U
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- circuit
- atx
- power supply
- active clamp
- output
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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
The utility model discloses an ATX reinforced type computer power supply, which comprises an EMC filter circuit, a power factor correction (PFC) circuit, a SBY standby circuit, a PWM active clamp circuit, a sequential control circuit, a magnetic amplifying rear-stage adjustment circuit and a feedback circuit. An inputted alternating current sequentially passes through the EMC filter circuit, the power factor correction (PFC) circuit, a positive-exciting active clamp conversion circuit, an output rectification adjustment circuit and an output filter circuit so as to be outputted as a direct current. The voltage adjustment of a 3.3 V main circuit is performed through the feedback circuit. The voltage stabilization of an auxiliary circuit is performed through the magnetic amplifying rear-stage adjustment technology. The output sequence is controlled through the sequential control circuit. The sequential control circuit adopts a special chip, thus is accurate in control. The ATX reinforced type computer power supply also has the advantages of high control precision, stable properties, high reliability, strong environmental adaptability and so on.
Description
Technical field
The utility model relates to a kind of computer power supply, relates in particular to a kind of ATX framework Designing of Reinforced Computer power supply.
Background technology
At present, the most computers power supply adopts ATX standard motherboard framework, and traditional ATX power supply is comparatively simple because of the design of cost reason, and each item technical indicator is lower, and reliability can not satisfy the important events needs.
The utility model content
The utility model technical issues that need to address just are to overcome the defective of prior art, provide a kind of technical indicator good, the ATX Designing of Reinforced Computer power supply that reliability is high.
The utility model solves the technical scheme that its technical matters adopted:
A kind of ATX Designing of Reinforced Computer power supply comprises EMC filtering circuit, PFC circuit of power factor correction and SBY stand-by circuit, PWM active clamp circuit, sequential control circuit, reaches magnetic amplification back level adjustment circuit and feedback circuit.The external communication electricity links to each other with EMC filtering circuit input end; EMC filtering circuit output terminal links to each other with the SBY stand-by circuit with the PFC circuit of power factor correction; The PFC circuit of power factor correction links to each other with the PWM active clamp circuit with the SBY stand-by circuit, and sequential control circuit links to each other with the PWM active clamp circuit; The PWM active clamp circuit provides the output of 3.3V main road, and the output of 3.3V main road outputs to feedback circuit simultaneously, and the feedback circuit control end is connected to the PWM active clamp circuit, and feedback circuit carries out the voltage adjustment to main road 3.3V; Another road of PWM active clamp circuit outputs to magnetic and amplifies back level adjustment circuit, and magnetic amplifies back level adjustment circuit provides bypass output, and magnetic amplifies back level adjustment circuit to bypass output carrying out voltage stabilizing.
Said ATX Designing of Reinforced Computer power supply; Its EMC filtering circuit comprises inductance L 1, resistance R 1, R2 and capacitor C 1, C2, C3; Wherein capacitor C 2 and the resistance R of connecting 1, R2 are parallel to the input end of inductance L 1; Capacitor C 1 is connected across between inductance L 1 output and the ground, and capacitor C 3 is output terminals of high-frequency bypass capacitor cross-over connection inductance L 1, eliminates outside DM EMI signal and prevents that circuit from crosstalking.
Said ATX Designing of Reinforced Computer power supply, its PFC circuit of power factor correction control chip U1 is NCP1653.
Said ATX Designing of Reinforced Computer power supply, its PWM active clamp circuit is NCP1027 by pwm chip U3.
It is the dedicated control circuit realization of core that said ATX Designing of Reinforced Computer power supply, its sequential control adopt the PS224U special integrated circuit, entity embedding all-metal closed structure.
The course of work of the utility model is: input AC carries out filtering through the EMC filtering circuit earlier; To satisfy the electromagnetic compatibility requirement; Improve power factor through the PFC circuit of power factor correction, obtain the output of multipath voltage regulation direct current through normal shock active clamp translation circuit, output rectification adjustment circuit and output filter circuit again.Wherein, main road 3.3V utilizes the light-coupled isolation feedback circuit to carry out the output voltage adjustment, and a level adjustment technology carried out voltage stabilizing after all the other each bypasses adopted magnetic to amplify.
The utility model has been compared following advantage with traditional DC/DC power supply:
1, self has the EMC filtering circuit, satisfy the requirement of ATX Electro Magnetic Compatibility.
2, self has pfc circuit, satisfies power factor and requires to realize simultaneously the requirement of 85～265V global general-use input range.
3, the output precision of voltage regulation is high, and sequential control is precisely stable.
4, all-metal sealing, entity embedding, anti-harsh environment for use.
The beneficial effect of the utility model is: characteristics such as wide input voltage range, Electro Magnetic Compatibility are good, the output voltage precision high, functional reliability is high, adaptive capacity to environment is strong.
Description of drawings
Fig. 1 is the utility model circuit function block diagram.
Fig. 2 is the EMC filtering circuit figure in the utility model
Fig. 3 is the PFC control circuit figure in the utility model
Fig. 4 is main circuit diagram-PFC and the SBY stand-by circuit part in the utility model
Fig. 5 is the active clamp control circuit figure in the utility model
Fig. 6 is main circuit diagram-active clamp and the output in the utility model
Fig. 7 is the main circuit diagram-3.3V output in the utility model
Fig. 8 is sequential control and the 3.3V output controlling circuit of voltage regulation figure in the utility model
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Like Fig. 1 and Fig. 2～shown in Figure 8, a kind of ATX Designing of Reinforced Computer power supply, comprise EMC filtering circuit, PFC circuit of power factor correction and SBY stand-by circuit, PWM active clamp circuit, sequential control circuit, and magnetic amplify back level adjustment circuit and feedback circuit.The external communication electricity links to each other with EMC filtering circuit input end; EMC filtering circuit output terminal links to each other with the SBY stand-by circuit with the PFC circuit of power factor correction; The PFC circuit of power factor correction links to each other with the PWM active clamp circuit with the SBY stand-by circuit, and sequential control circuit links to each other with the PWM active clamp circuit; The PWM active clamp circuit provides the output of 3.3V main road, and the output of 3.3V main road outputs to feedback circuit simultaneously, and the feedback circuit control end is connected to the PWM active clamp circuit, and feedback circuit carries out the voltage adjustment to main road 3.3V; Another road of PWM active clamp circuit outputs to magnetic and amplifies back level adjustment circuit, and magnetic amplifies back level adjustment circuit provides bypass output, and magnetic amplifies back level adjustment circuit to bypass output carrying out voltage stabilizing.
Said ATX Designing of Reinforced Computer power supply; Its EMC filtering circuit comprises inductance L 1, resistance R 1, R2 and capacitor C 1, C2, C3; Wherein capacitor C 2 and the resistance R of connecting 1, R2 are parallel to the input end of inductance L 1; Capacitor C 1 is connected across between inductance L 1 output and the ground, and capacitor C 3 is output terminals of high-frequency bypass capacitor cross-over connection inductance L 1, eliminates outside DM EMI signal and prevents that circuit from crosstalking.
Said ATX Designing of Reinforced Computer power supply; Its PFC circuit of power factor correction is made up of control chip U1, switching tube Q4, energy storage inductor L6 etc.; The preparatory voltage stabilizing of interchange 85～265V that principle will import is direct current 385V to utilize BULK to boost; Realize the purpose of wide region voltage stabilizing and PFC, control chip U1 is NCP1653.
Said ATX Designing of Reinforced Computer power supply; Its PWM active clamp circuit is made up of pwm chip U3, switching tube Q7, clamper tube Q9, high-frequency transformer etc.; Through pwm chip CS pipe alternate conduction with end; Make on the high-frequency transformer primary coil voltage that produces alternation, because the mutual inductance principle, and then respectively organize at transformer and to produce alternating voltage on the secondary coil.Pwm chip U3 is NCP1027.
It is the dedicated control circuit realization of core that said ATX Designing of Reinforced Computer power supply, its sequential control adopt the PS224U special integrated circuit, entity embedding all-metal closed structure.
Wherein one group of coil of 3.3V becomes the DC voltage of pulsation through a circuit of synchronous rectification of being made up of Q1, two switching tubes of Q2; Circuit of synchronous rectification is to be implemented in the key that improves conversion efficiency under the situation of big electric current; Its two switching tubes are formed a controlled rectifier bridge; The rectifier switch pipe is triggered by chip U5 control, realizes alternate conduction and ends, and is lower than traditional diode rectification loss.Filter network and the feedback circuit formed through common mode inductance and electric capacity through the pulsating direct current of overcommutation become the galvanic current pressure that has than low-ripple coefficient.
All the other each group through inductance L B the magnetic formed amplify a back level adjustment coil and carry out voltage stabilizing.
The utility model is not limited to above-mentioned preferred forms, and other any identical with the utility model or akin products that anyone draws under the enlightenment of the utility model all drop within the protection domain of the utility model.
Claims (5)
1. an ATX Designing of Reinforced Computer power supply comprises EMC filtering circuit, PFC circuit of power factor correction and SBY stand-by circuit, PWM active clamp circuit, sequential control circuit, reaches magnetic amplification back level adjustment circuit and feedback circuit; It is characterized in that: the external communication electricity links to each other with EMC filtering circuit input end; EMC filtering circuit output terminal links to each other with the SBY stand-by circuit with the PFC circuit of power factor correction; The PFC circuit of power factor correction links to each other with the PWM active clamp circuit with the SBY stand-by circuit, and sequential control circuit links to each other with the PWM active clamp circuit, and the PWM active clamp circuit provides the output of 3.3V main road; 3.3V main road output outputs to feedback circuit simultaneously; The feedback circuit control end is connected to the PWM active clamp circuit, and feedback circuit carries out the voltage adjustment to main road 3.3V, and another road of PWM active clamp circuit outputs to magnetic and amplifies back level adjustment circuit; Magnetic amplifies back level adjustment circuit provides bypass output, and magnetic amplifies back level adjustment circuit to bypass output carrying out voltage stabilizing.
2. ATX Designing of Reinforced Computer power supply according to claim 1; It is characterized in that: the EMC filtering circuit comprises inductance L 1, resistance R 1, R2 and capacitor C 1, C2, C3; Wherein capacitor C 2 and the resistance R of connecting 1, R2 are parallel to the input end of inductance L 1; Capacitor C 1 is connected across between inductance L 1 output and the ground, and capacitor C 3 is output terminals of high-frequency bypass capacitor cross-over connection inductance L 1.
3. ATX Designing of Reinforced Computer power supply according to claim 1 is characterized in that: PFC circuit of power factor correction control chip U1 is NCP1653.
4. ATX Designing of Reinforced Computer power supply according to claim 1 is characterized in that: the PWM active clamp circuit is NCP1027 by pwm chip U3.
5. ATX Designing of Reinforced Computer power supply according to claim 1 is characterized in that: it is the dedicated control circuit realization of core that the PS224U special integrated circuit is adopted in sequential control, entity embedding all-metal closed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202170155U CN202166955U (en) | 2011-06-24 | 2011-06-24 | ATX reinforced type computer power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202170155U CN202166955U (en) | 2011-06-24 | 2011-06-24 | ATX reinforced type computer power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202166955U true CN202166955U (en) | 2012-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202170155U Expired - Fee Related CN202166955U (en) | 2011-06-24 | 2011-06-24 | ATX reinforced type computer power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202166955U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441683A (en) * | 2013-09-12 | 2013-12-11 | 深圳市开立科技有限公司 | Active clamping forward power circuit |
-
2011
- 2011-06-24 CN CN2011202170155U patent/CN202166955U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441683A (en) * | 2013-09-12 | 2013-12-11 | 深圳市开立科技有限公司 | Active clamping forward power circuit |
| CN103441683B (en) * | 2013-09-12 | 2015-09-23 | 深圳开立生物医疗科技股份有限公司 | A kind of active clamp forward power circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20170624 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |