CN100499329C - Switch power source digital controller with digital communication function - Google Patents
Switch power source digital controller with digital communication function Download PDFInfo
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- CN100499329C CN100499329C CNB2007101958342A CN200710195834A CN100499329C CN 100499329 C CN100499329 C CN 100499329C CN B2007101958342 A CNB2007101958342 A CN B2007101958342A CN 200710195834 A CN200710195834 A CN 200710195834A CN 100499329 C CN100499329 C CN 100499329C
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Abstract
The invention belongs to the technical field of the digital control, in particular relates to a switch power-source digital controller with digital communication function. A digital signal processor unit of the controller receives the feedback signal transmitted by a sensor, and bidirectinoally transmits the digital signal with a digital communication unit; the serial digital signal is bidirectionally transmitted between the digital communication unit and a superior machine; a supplementary power source supplies the controlling power for the digital signal processor unit and supplies the driving power for a PWM wave driving unit; the digital signal processor unit transmits the PWM wave to the PWM wave driving unit; and the PWM wave driving unit provides the driving signal to a power element that is arranged on a switch power source. The invention has the advantages that the complete-digital control of the switch power source is realized, good control precision of the switch power source is guaranteed, the remote monitoring and controlling of the switch power source are easily performed, and the reliability of the controller is improved.
Description
Technical field
The invention belongs to the digital control technology field, relate to the Switching Power Supply digitial controller, particularly a kind of Switching Power Supply digitial controller with digital communication functions.
Background technology
Traditional Switching Power Supply generally adopts the mode of simulation control.Analog control mode have precision low, be easy to generate that temperature is floated, the updating and upgrading of a product must redesign hardware and do not possess shortcomings such as accurate fault location and warning function.The Switching Power Supply digitial controller of digit chip has appearred adopting in recent years.As disclosing a kind of digital control method of Switching Power Supply among the patent CN200410075502.7, the digital control unit in this method comprises that digital signal processor, programmable logic device, program storage, random asccess memory, house dog, 2 crystal oscillators and analog to digital converter constitute.This controller reached the control effect, but sort controller is not brought the advantage of digital control approach into play fully by the connection of complicated digital electron device.At first sort controller fails to realize accurate fault location and warning function, and sort controller is not realized digital communication functions yet in addition.And now Switching Power Supply is widely used in the various digitization systems, if can not realize communicating by letter with other equipment, Switching Power Supply can only exist as an isolated individuality, can not effective fusion in whole big system.
Summary of the invention
Technical scheme of the present invention is to fail to realize accurate fault location and warning function in order to overcome the controller that exists in the prior art, does not also realize the shortcoming of digital communication functions, and a kind of Switching Power Supply digitial controller with digital communication functions is provided.This controller uses a digital signal processor unit just can realize comprising the function of digital signal processor, programmable logic device, program storage, random asccess memory, house dog, 2 crystal oscillators and analog to digital converter, and the digital communication unit of this controller by a band photoelectrical coupler realized the isolation of the switch power controller serial communication of powering in addition.
Technical scheme of the present invention:
A kind of Switching Power Supply digitial controller with digital communication functions, this controller comprises digital signal processor unit, digital communication unit, PWM ripple driver element and accessory power supply; Said digital signal processor unit comprises digital signal processor, crystal oscillator and capacitance-resistance peripheral circuit; The feedback signal that digital signal processor receiving key power sensor transmits, according to digital signal processor inside be preset at the electric current of the Switching Power Supply in the data storage, the set-point of voltage is compared with feedback signal, be preset at algorithm in the program storage by inside again, calculate, and produce one group of PWM ripple by task manager; Digital signal processor receives the control electricity that accessory power supply provides, and sends the PWM ripple to PWM ripple driver element, twocouese transmission of digital signals between digital signal processor and the digital communication unit; Digital signal processor links to each other with crystal oscillator, and receives the clock signal of the fixed frequency of crystal oscillator transmission; Digital signal processor links to each other with the capacitance-resistance peripheral circuit, and the capacitance-resistance peripheral circuit provides auxiliary level signal to digital signal processor; Said digital communication unit comprises photoelectrical coupler and universal serial bus transducer; Photoelectrical coupler links to each other with the universal serial bus transducer, twocouese transmission of digital signals between photoelectrical coupler and the digital signal processor unit, twocouese transmission serial digital signal between universal serial bus transducer and the host computer; The digital signal processor unit links to each other with transducer on the Switching Power Supply, and the feedback signal that transmits of receiving sensor; Link to each other between digital signal processor unit and the digital communication unit, and the twocouese transmission of digital signals; Digital communication unit links to each other with host computer, and twocouese transmission serial digital signal; Accessory power supply links to each other with the digital signal processor unit, and control is provided for the digital signal processor unit; Accessory power supply links to each other with PWM ripple driver element, and driving is provided for PWM ripple driver element; The digital signal processor unit links to each other with PWM ripple driver element, and the digital signal processor unit sends the PWM ripple to PWM ripple driver element; PWM ripple driver element links to each other with power device on the Switching Power Supply, and provides drive signal to the power device on the Switching Power Supply.
Beneficial effect of the present invention: the Switching Power Supply digitial controller of band digital communication functions of the present invention has been realized the digital control of Switching Power Supply with simple structure, this controller control precision height, the complete electrical isolation of controller and main circuit, the reliability height of control system, and control flexibly, system upgrade is convenient, is easy to standardization; This controller can also and host computer between realize the serial digital communication of bi-directional full-duplex, easily Switching Power Supply is carried out telemonitoring and control; This controller electrical isolation fully not only and between the main circuit, and this controller in addition can also and the host computer of communication with it between realize electrical isolation, improved the reliability of controller.Used the Switching Power Supply of the Switching Power Supply digitial controller of this band digital communication functions to be applied in the current various digitization systems, Switching Power Supply better has been fused in the whole system goes.
Description of drawings
The present invention has 3 width of cloth accompanying drawings.
Fig. 1, be circuit theory diagrams of the present invention;
Fig. 2, be the circuit theory diagrams of inside, digital signal processor unit;
Fig. 3, be the circuit theory diagrams of digital communication unit inside.
Embodiment
As shown in Figure 1, the Switching Power Supply digitial controller of band digital communication functions of the present invention comprises digital signal processor unit 2, digital communication unit 5, PWM ripple driver element 8 and accessory power supply 10.Fig. 2 shows the internal structure of digital signal processor unit 2, digital signal processor unit 2 comprises digital signal processor 21, crystal oscillator 23 and capacitance-resistance peripheral circuit 22, the digital signal processor of selecting for use in specific embodiments of the invention 21 is that the model of TI company is the digital signal processor of TMS320F2812, comprises central processing unit in the digital signal processor of this model, data storage is arranged, program storage, random asccess memory, house dog, analog to digital converter and the functional modules such as task manager that can produce the PWM ripple automatically; Fig. 3 shows the internal structure of digital communication unit 5, digital communication unit 5 comprises photoelectrical coupler 31 and universal serial bus transducer 33, the photoelectrical coupler model of selecting for use in specific embodiments of the invention is 6N137, and the model of universal serial bus transducer is MAX491.
In the Switching Power Supply digitial controller of this band digital communication functions, digital signal processor unit 2 links to each other with lead with transducer on the Switching Power Supply, the feedback signal 1 of digital signal processor unit 2 receiving sensors transmission; Link to each other twocouese transmission of digital signals 4 between digital signal processor unit 2 and the digital communication unit 5 with lead between digital signal processor unit 2 and the digital communication unit 5; Link to each other twocouese transmission serial digital signal 6 between digital communication unit 5 and the host computer between digital communication unit 5 and the host computer with lead; Accessory power supply 10 links to each other with digital signal processor unit 2 leads, and accessory power supply 10 provides control electricity 3 for digital signal processor unit 2; Lead links to each other between accessory power supply 10 and the PWM ripple driver element 8, and accessory power supply 10 provides for PWM ripple driver element 8 and drives electricity 9; Lead links to each other between digital signal processor unit 2 and the PWM ripple driver element 8, and digital signal processor unit 2 sends PWM ripple 7 to PWM ripple driver element 8; PWM ripple driver element 8 links to each other with power device lead on the Switching Power Supply, and PWM ripple driver element 8 provides drive signal 11 to the power device on the Switching Power Supply.
In specific embodiments of the invention, digital signal processor unit 2 is independently circuit boards, comprises digital signal processor 21, crystal oscillator 23 and capacitance-resistance peripheral circuit 22 on this circuit board.Digital signal processor 21 is cores of digital signal processor unit 2, the feedback signal 1 that digital signal processor 21 receiving sensors transmit, digital signal processor 21 receives the control electricity 3 that accessory power supply 10 provides, digital signal processor 21 sends PWM ripple 7 to PWM ripple driver element 8, twocouese transmission of digital signals 4 between digital signal processor 21 and the digital communication unit 5.In this circuit board inside, link to each other with the printed board upward wiring between digital signal processor 21 and the crystal oscillator 23, digital signal processor 21 receives the clock signal 25 of the fixed frequency that crystal oscillators 23 send; Link to each other with the printed board upward wiring between digital signal processor 21 and the capacitance-resistance peripheral circuit 22, capacitance-resistance peripheral circuit 22 provides its work necessary auxiliary level signal 24 for digital signal processor 21.
In specific embodiments of the invention, digital communication unit 5 is independently circuit boards, comprises photoelectrical coupler 31 and universal serial bus transducer 33 on this circuit board.Twocouese transmission of digital signals 4 between photoelectrical coupler 31 and the digital signal processor unit 2, twocouese transmission serial digital signal 6 between universal serial bus transducer 33 and the host computer.Link to each other with the printed board upward wiring between this circuit board inside, photoelectrical coupler 31 and universal serial bus transducer 33,
The feedback signal 1 that digital signal processor 21 receiving key power sensors in the Switching Power Supply digitial controller digital signal processor inside unit 2 of band digital communication functions of the present invention transmit, according to digital signal processor 21 inside be preset at the electric current of the Switching Power Supply in the data storage, the set-point of voltage is compared with feedback signal 1, be preset at algorithm in the program storage by inside again, calculate, and produce one group of PWM ripple 7 by task manager.Digital signal processor 21 sends this group PWM ripple 7 to PWM ripple driver element 8, PWM ripple driver element 8 is converted into one group of drive signal 11 of isolating mutually between any two with PWM ripple 7, is used on the driving switch power supply power device such as MOSFET or IGBT etc.
For satisfying the operate as normal of the digital signal processor 21 in the digital signal processor unit 2, also have a crystal oscillator 23 a fixing digital dock 25 to be provided for digital signal processor 21 in the digital signal processor unit 2, also comprise a capacitance-resistance peripheral circuit 22 that is made of resistance and electric capacity in addition in the digital signal processor unit 2, this capacitance-resistance peripheral circuit 22 provides its work necessary auxiliary level signal 24 for digital signal processor 21.
Accessory power supply 10 provides a way word device operate as normal required control electricity 3 for digital signal processor unit 2, and provides the required multichannel of generation drive signal to drive electricity 9 for PWM ripple driver element 8.In addition, to drive electricity 9 all be electrical isolation mutually between any two for the used control electricity 3 in digital signal processor unit 2 and PWM ripple driver element 8 used multichannels.Can guarantee that like this controller isolates fully with the main circuit of Switching Power Supply on electric, can make controling appliance that the highest electric reliability is arranged.
Claims (1)
1, a kind of Switching Power Supply digitial controller with digital communication functions is characterized in that: this controller comprises digital signal processor unit (2), digital communication unit (5), PWM ripple driver element (8) and accessory power supply (10); Said digital signal processor unit (2) comprises digital signal processor (21), crystal oscillator (23) and capacitance-resistance peripheral circuit (22); The feedback signal (1) that digital signal processor (21) receiving key power sensor transmits, according to digital signal processor (21) inside be preset at the electric current of the Switching Power Supply in the data storage, the set-point of voltage is compared with feedback signal (1), be preset at algorithm in the program storage by inside again, calculate, and produce one group of PWM ripple (7) by task manager; Digital signal processor (21) receives the control electricity (3) that accessory power supply (10) provides, and sends PWM ripple (7) to PWM ripple driver element (8), twocouese transmission of digital signals (4) between digital signal processor (21) and the digital communication unit (5); Digital signal processor (21) links to each other with crystal oscillator (23), and receives the clock signal (25) of the fixed frequency of crystal oscillator (23) transmission; Digital signal processor (21) links to each other with capacitance-resistance peripheral circuit (22), and capacitance-resistance peripheral circuit (22) provides auxiliary level signal (24) for digital signal processor (21); Said digital communication unit (5) comprises photoelectrical coupler (31) and universal serial bus transducer (33); Photoelectrical coupler (31) links to each other with universal serial bus transducer (33), twocouese transmission of digital signals (4) between photoelectrical coupler (31) and digital signal processor unit (2), twocouese transmission serial digital signal (6) between universal serial bus transducer (33) and the host computer; Digital signal processor unit (2) links to each other with transducer on the Switching Power Supply, and the feedback signal (1) that transmits of receiving sensor; Link to each other between digital signal processor unit (2) and the digital communication unit (5), and twocouese transmission of digital signals (4); Digital communication unit (5) links to each other with host computer, and twocouese transmission serial digital signal (6); Accessory power supply (10) links to each other with digital signal processor unit (2), and control electricity (3) is provided for digital signal processor unit (2); Accessory power supply (10) links to each other with PWM ripple driver element (8), and driving electricity (9) is provided for PWM ripple driver element (8); Digital signal processor unit (2) links to each other with PWM ripple driver element (8), and digital signal processor unit (2) send PWM ripple (7) to PWM ripple driver element (8); PWM ripple driver element (8) links to each other with power device on the Switching Power Supply, and provides drive signal (11) to the power device on the Switching Power Supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101958342A CN100499329C (en) | 2007-11-30 | 2007-11-30 | Switch power source digital controller with digital communication function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101958342A CN100499329C (en) | 2007-11-30 | 2007-11-30 | Switch power source digital controller with digital communication function |
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| CN101207324A CN101207324A (en) | 2008-06-25 |
| CN100499329C true CN100499329C (en) | 2009-06-10 |
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| CNB2007101958342A Active CN100499329C (en) | 2007-11-30 | 2007-11-30 | Switch power source digital controller with digital communication function |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101582239B (en) * | 2009-03-20 | 2011-07-06 | 深圳市中庆微科技开发有限公司 | Preset value switch stabilized voltage supply, controller, distributor and distributing system |
| CN202306199U (en) * | 2011-07-27 | 2012-07-04 | 中兴通讯股份有限公司 | Digital power supply and circuit board |
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