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Freescale Semiconductor M68HC08 manual 8.Flow Chart - Main Flow, Part, Software Design

Models: M68HC08

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Figure 5-8. Flow Chart — Main Flow, Part 2

Software Design

2
			Measure DC-BUS voltage
Is DCM HW variation selected ?			Actual DC-BUS voltage >
			maximum allowed DC-BUS
			voltage ?	yes
yes				yes
yes
PVAL1 = DUTY_CYCLE_MAX;		phase 1 - Reach DC-bus		faultISR()
no		voltage	no
no		no	no
		no
Actual DC-BUS voltage < DC-BUS		Required DC-BUS voltage = DC-BUS run voltage
Actual DC-BUS voltage < DC-BUS
start voltage ?
yes		Set maximum ballast frequency and time interval
		Set maximum ballast frequency and time interval
Is enabled PI PFC stage			Enable HRP
regulator calculation ?			Enable HRP
regulator calculation ?
yes	no
	no	Has time interval for keep maximu m
Increment required DC-BUS voltage by ramp step		Has time interval for keep maximu m
Increment required DC-BUS voltage by ramp step			frequency gone ?
voltage
			no

Required DC-BUS voltage > DC-BUS

start voltage ?

Is enabled PI PFC stage

regulator calculation ?

no

yes

yes

Required DC-BUS voltage = DC-BUS start voltage

Calculate PI PFC stage regulator for

no

reference sine gain

yes

Calculate PI PFC stage regulator for

no

reference sine gain

Test DC-BUS voltage on limits

phase 2 - Keep maximum

Has start time gone ?

yes

frequency

phase 1 - Reach DC-bus

faultISR()

3

voltage

Figure 5-8. Flow Chart — Main Flow, Part 2

Dimmable Light Ballast with Power Factor Correction, Rev. 1

48	Freescale Semiconductor

Image 48

Freescale Semiconductor M68HC08 manual 8.Flow Chart - Main Flow, Part, Software Design, Freescale Semiconductor

Contents

Designer Reference Manual M68HC08 MicrocontrollersDRM067 Rev. 1 12/2005 Page Designer Reference Manual Draft 2 for Review Freescale SemiconductorContents Chapter Introduction Chapter Control TheoryChapter Reference Design Chapter Hardware DesignChapter Demo Setup Appendix A. Schematics and Part ListChapter Software Design Appendix B. References1.2 Benefits of this Solution Chapter Introduction1.1 Introduction 1.3 The MC68HC908LB8 Microcontroller 7-bitkeyboard interrupt Introduction Freescale SemiconductorChapter Control Theory 2.1 Introduction2.1.1 Fluorescent Lamp Control Theory 2.1.2 Fluorescent Lamp OperationGas filling mixture 2.1.3 Controlling the Fluorescent Lamp Freescale SemiconductorFreescale Semiconductor 2.2PFC Control Theory 2.2.1 IntroductionFreescale Semiconductor Freescale Semiconductor MCU PWM PWM1 FAULT PIN Control TheoryDC Bus Voltage Zero2.2.4 Concept Summary Figure 2-8.Generated Input Current WaveformControl Theory Freescale Semiconductor3.2 Dimmable Light Ballast Characteristics Chapter Reference Design3.1 Application Outline 3.3 Application Description Table 3-1.Light Ballast Characteristics3.3.2 Power Factor Correction 3.3.1 Light Ballast ControlCONTROL BOARD MC68HC908LB83.4 Software Specification 3.5 Hardware Specification3.3.3 Protection Features Chapter Hardware Design 4.1 Hardware Implementation4.2 System Modules 4.2.1 Input and PFC Hardware DesignFigure 4-3.Dimmable Light Ballast - Input and PFC 4.2.2 Inverter Freescale SemiconductorFigure 4-4.Dimmable Light Ballast - Inverter System ModulesFreescale Semiconductor HALF BRIDGE4.2.3 Microcontroller Signal System ModulesPin number TOP BOT Comp Comp Out Zero DetectSignal Table 4-2.J2 Interface HeaderHardware Design Pin number4.2.4 Power Supply Figure 4-6.Dimmable Light Ballast - Power SupplyTable 4-3.Supplied Voltages Hardware Design Freescale SemiconductorChapter Software Design 5.1 Introduction5.2 Control Algorithm Description 5.2.1 Power Factor Correction Control 5.2.1.2 Phase Shift Synchronization5.2.1.4 Generation of Output PFC Control SIgnal 5.2.1.1 DC-busVoltage Control5.2.2 Light Ballast Control 5.2.2.1 Tube Start Mode5.2.2.2 Luminance Level Control Tube Run Mode q = itADmin - A ⋅ ek ⋅ ADmin ireq = A ⋅ ek ⋅ ireqAD + qrounditmin ⋅ ADmax ⁄ imax rounditmax ⋅ ADmax ⁄ imax5.3.1 Initialization Setup 5.3 Software Implementation5.3.1.1 PWM Setup 5.3.1.2 HRP Setup PWM Frequency =BusFrequency Hz Hz5.3.2 Main Program Loop 5.3.3 Synchronization Interrupt Routine 5.3.4 Sine Wave Generation Interrupt RoutineFreescale Semiconductor Set 1ms flag and reset 1ms counter Software Designinterrupt void pwmISRvoid Read new PWM value from table * sineGain5.3.4.1 Fault Detection and Processing 5.4 Detailed Software Description Figure 5-6.Flow Chart - timovISR and faultISRSoftware Design Stop HRPFigure 5-7.Flow Chart - Main Flow, Part Detailed Software DescriptionFigure 5-8.Flow Chart - Main Flow, Part Software DesignFreescale Semiconductor Figure 5-9.Flow Chart - Main Flow, Part Detailed Software DescriptionFreescale Semiconductor Figure 5-10.Flow Chart - Main Flow, Part Software DesignFreescale Semiconductor 5.5.1.1 High Resolution PWM HRP 5.5.1.4 Timer Interface Module TIM5.5 Microcontroller Usage 5.5.1 Microcontroller Peripheral Usage5.6 Definitions of Constants and Variables 5.5.3 I/O UsageSoftware Design I/O pin5.6.1 System Setup Definitions defines the minimum HRP frequency in kHz 5.6.2 System Constants and Variables Page Chapter Demo Setup 6.1 Hardware Setup6.2 Software Setup 6.2.1 Required Software Tools6.2.3 Executing the Application 6.2.4 Project Files\prm\P&E FCS linker.prm, linker program file \Sources\pi controller.c, PI regulators fileAppendix A. Schematics and Part List A.1 Schematics2.7mH PFC Current SenseComp PFC GatePFC Current Sense CompPFC Gate Zero DetectFigure A-3.Inverter DCB TOP BOTO1 O2 O3 O4 O5 O6 O7 O8 COM LOTOP BOT Comp - Comp Out Zero Detect Serial DataSerial Data DCB Divider Tube Current Tube Current Tube Voltage differenceGND Serial Data5Serial Data DCB Divider Tube Current Tube Current Tube Voltage differenceFigure A-6.Power supply A.2 Parts List DESIGNATORSQUANTITY DESCRIPTIONDESIGNATORS QUANTITYDESCRIPTION MANUFACTURERFreescale Semiconductor Appendix B. References Freescale Semiconductor Page How to Reach Us Home PageE-mail USA/Europe or Locations Not Listed