CN102751853B - A kind of novel digital power recommends pwm signal generation circuit - Google Patents
A kind of novel digital power recommends pwm signal generation circuit Download PDFInfo
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- CN102751853B CN102751853B CN201210267973.2A CN201210267973A CN102751853B CN 102751853 B CN102751853 B CN 102751853B CN 201210267973 A CN201210267973 A CN 201210267973A CN 102751853 B CN102751853 B CN 102751853B
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- pwm signal
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Abstract
A kind of production method for recommending pwm signal of novel digital power.It is for the scheme designed by many single-chip microcomputers containing PWM module, this single-chip microcomputer can produce the complementary pwm signal of two-way and dead time is adjustable, but it can not produce and recommend pwm signal needed for push-pull circuit, can produce this single-chip microcomputer by the method for the present invention and recommend pwm signal.The invention is characterized in produce the complementary pwm signal of two-way first, the dutycycle for setting the complementary pwm signal of two-way again is 50%, two-way dutycycle is thus obtained and has recommended pwm signal for 50%, then the dutycycle for recommending pwm signal is changed between 0~50% by adjusting the size of dead time.
Description
Art：
In Power Electronic Circuit, one kind produces and recommends PWM (pulse width modulation pulse width modulations)
The circuit of signal.
Background technology：
In Power Electronic Circuit, digital power is the focus and trend studied recently, is also very with single-chip microcomputer control
Universal.Many single-chip microcomputers containing PWM module can not produce and recommend pwm signal needed for push-pull circuit, but can produce
The complementary pwm signal of two-way and dead time is adjustable.The present invention can allow forenamed single-chip microcomputer to produce push-pull circuit institute
What is needed recommends pwm signal.Wherein, the pwm signal of recommending of the invention carried refers to that two-way cycle phase is same, and dutycycle is equal, phase
The pwm signal of half period is differed, as shown in Figure 2；The complementary pwm signal of two-way refers to that the cycle phase of the two-way pwm signal is same,
Signal level state is on the contrary, as shown in Figure 1 at any time；Dead time refers to that pwm signal should be in t1Moment is from low level
High level (high level is effective) is jumped to, but is actually passed after one section of delay time, in t2Moment is from low transition to height
Level, this section of delay time td=t2-t1It is exactly dead time, as shown in Figure 3.
The content of the invention:
In digital power control field, much the single-chip microcomputer containing PWM module can not produce recommending needed for push-pull circuit
Pwm signal, but the complementary pwm signal of two-way can be produced and dead time is adjustable.In order to allow foregoing single-chip microcomputer to produce
Pwm signal is recommended, the present invention proposes a kind of generation circuit for recommending pwm signal of novel digital power.
Technical scheme：
In digital power control field, much the single-chip microcomputer containing PWM module can not produce recommending needed for push-pull circuit
Pwm signal, but the complementary pwm signal of two-way can be produced and dead time is adjustable.The present invention is to allow foregoing list
A kind of novel scheme of pwm signal needed for piece machine generation push-pull circuit.The program is comprised the concrete steps that：Firstth, monolithic is made
The pwm signal of the PWM module output two-way complementation of machine；Secondth, the dutycycle for setting the complementary pwm signal of two-way is 50%,
Thus complementary pwm signal is become and recommends pwm signal, pwm signal dutycycle of recommending now is 50%；3rd, lead to
Overregulating dead time can be such that the dutycycle for recommending pwm signal changes between 0~50%, so as to obtain required recommend
Pwm signal.The core of the present invention is that the pwm signal dutycycle for setting two-way complementary is 50%, be allowed to become dutycycle be
50% recommends pwm signal, then the dutycycle for recommending pwm signal by adjusting dead time to make changes between 0~50%.
Beneficial effects of the present invention：
In digital power control field, much the single-chip microcomputer containing PWM module can not produce recommending needed for push-pull circuit
Pwm signal, but the complementary pwm signal of two-way can be produced and dead time is adjustable.The present invention is to allow foregoing list
A kind of novel scheme of pwm signal needed for piece machine generation push-pull circuit.The program both meets actual demand, and succinct warp
Ji.
Brief description of the drawings：
Fig. 1 is the oscillogram of the complementary pwm signal of two-way.
Fig. 2 is the oscillogram for recommending pwm signal.
Fig. 3 is the oscillogram of dead time.
Embodiment：
Illustrate the implementation of the present invention with reference to PIC16F616 single-chip microcomputers.
PIC16F616 carries PWM module, and dead time is adjustable.Following setting can allow PIC16F616 single-chip microcomputers
The output two-way cycle is 40us, and dutycycle is adjustable between 0~50% to recommend pwm signal.Its specific embodiment is：The
One step, half-bridge mode is selected in the PWM module that PIC16F616 is carried by setting register CCP1CON for 0x8c, is exported
The complementary pwm signal of two-way；Second step, it is that 119, CCPR1L is 60 to set register PR2, makes the week of two-way complementary PWM signals
Phase is 40us, and dutycycle is 50%, and such signal is also two-way dutycycle recommends pwm signal for 50%；3rd step, passes through
Change register PWM1CON value to adjust dead time, so that the dutycycle needed for exporting push-pull circuit is between 0~50%
What is changed recommends pwm signal.The core point of the present invention is that the dutycycle for the pwm signal for setting two-way complementary is 50%, then leads to
Overregulate dead time and recommend pwm signal needed for push-pull circuit to export..
Claims (2)
1. a kind of novel digital power recommends pwm signal generation circuit, it is characterized in that：Including hardware and software, its hardware
It is made up of the interior single-chip microcomputer containing PWM module, and the PWM module can not produce the pwm signal of recommending needed for push-pull circuit, but
The complementary pwm signal of two-way can be produced and dead time is adjustable；Its software algorithm is, the first step, by setting single-chip microcomputer
Register the single-chip microcomputer is exported the complementary pwm signal of two-way, second step, by setting the register of single-chip microcomputer to make two-way
The dutycycle of complementary PWM signals is 50%, such signal be also two-way dutycycle for 50% pwm signal of recommending, the 3rd step,
Dead time is adjusted by the value for the register for changing single-chip microcomputer, by adjusting dead time can make to recommend pwm signal
Dutycycle changes between 0~50%, so that recommending of changing between 0~50% of the dutycycle needed for exporting push-pull circuit
Pwm signal.
2. according to claim 1 recommend pwm signal generation circuit, it is characterized in that：Single-chip microcomputer is PIC16F616.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210267973.2A CN102751853B (en) | 2012-07-31 | 2012-07-31 | A kind of novel digital power recommends pwm signal generation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210267973.2A CN102751853B (en) | 2012-07-31 | 2012-07-31 | A kind of novel digital power recommends pwm signal generation circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102751853A CN102751853A (en) | 2012-10-24 |
| CN102751853B true CN102751853B (en) | 2017-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210267973.2A Expired - Fee Related CN102751853B (en) | 2012-07-31 | 2012-07-31 | A kind of novel digital power recommends pwm signal generation circuit |
Country Status (1)
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113098239A (en) * | 2021-03-30 | 2021-07-09 | 深圳市雷能混合集成电路有限公司 | Control method and device of digital power supply |
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| US4348621A (en) * | 1980-01-08 | 1982-09-07 | Danfoss A/S | Control circuit for a multi-phase load |
| CN2458814Y (en) * | 2000-12-12 | 2001-11-07 | 北京通力环电气有限公司 | Full-bridge phase-shift drive |
| CN101019317A (en) * | 2004-08-23 | 2007-08-15 | 密克罗奇普技术公司 | Digital processor with pulse width modulation module having dynamically adjustable phase offset capability, high speed operation and simultaneous update of multiple pulse width modulation duty cycle r |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4092610A (en) * | 1977-02-17 | 1978-05-30 | Raytheon Company | Modulated carrier amplifying system |
| US5510974A (en) * | 1993-12-28 | 1996-04-23 | Philips Electronics North America Corporation | High frequency push-pull converter with input power factor correction |
| JP2007088926A (en) * | 2005-09-22 | 2007-04-05 | Victor Co Of Japan Ltd | D-class amplifier |
| JP2008172323A (en) * | 2007-01-09 | 2008-07-24 | Nec Electronics Corp | Dead time control circuit |
| CN101388603B (en) * | 2007-09-11 | 2012-01-11 | 华为技术有限公司 | Method and apparatus for regulating power source voltage |
| US20110203779A1 (en) * | 2008-02-15 | 2011-08-25 | Warwick Graham Andrew Dawes | Uninterruptible cooling system and apparatus |
| CN101373937B (en) * | 2008-10-08 | 2010-09-08 | 南京航空航天大学 | Ultrasound motor drive controller based on embedded system level chip |
| CN101420189B (en) * | 2008-12-04 | 2012-04-25 | 南通大学 | Ultrasonic motor controlling integrated circuit based on voltage controlled oscillator |
| CN101640526B (en) * | 2009-08-19 | 2012-09-05 | 广州金升阳科技有限公司 | IGBT driving circuit embedded with isolating source |
-
2012
- 2012-07-31 CN CN201210267973.2A patent/CN102751853B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4348621A (en) * | 1980-01-08 | 1982-09-07 | Danfoss A/S | Control circuit for a multi-phase load |
| CN2458814Y (en) * | 2000-12-12 | 2001-11-07 | 北京通力环电气有限公司 | Full-bridge phase-shift drive |
| CN101019317A (en) * | 2004-08-23 | 2007-08-15 | 密克罗奇普技术公司 | Digital processor with pulse width modulation module having dynamically adjustable phase offset capability, high speed operation and simultaneous update of multiple pulse width modulation duty cycle r |
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| CN102751853A (en) | 2012-10-24 |
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 430068 School of electrical and electronic engineering, Hubei University of Technology, 28, South Hongshan, Wuhan, Hubei Applicant after: Hubei Industry University Address before: 430064 School of electrical and electronic engineering, Hubei University of Technology, Wuhan 1, Hubei, Hongshan Province Applicant before: Hubei Industry University Applicant before: Wang Chao |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170905 Termination date: 20180731 |