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Freescale Semiconductor M68HC08 4.Dimmable Light Ballast - Inverter, System Modules, Half Bridge

Models: M68HC08

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Page 29

HALF BRIDGE

System Modules

J2

TUBE Connector

HALF BRIDGE

OUTPUT INDUCTANCE CIRCUITY	O1 O2 O3 O4 O5 O6 O7 O8

	DCB
	15V/1		R15 10R
		D3	R15 10R
		MURA160
			IC1
		1	Vcc	VB	8
		2	Vcc	VB	7
	TOP	2	HIN	HO	7
	TOP	3	HIN	HO	6
	BOT	3	LIN	Vs	6
	BOT	4	LIN	Vs	5
		4	COM LO		5
	2		COM LO
	2		IR2106
		C13	IR2106
		C13
	1	1uF
		25V

Q5
IRF830A	D
	D
R16 33R
G
	S
C11
100nF
	D
R18 33R
G
Q6	S
IRF830A

2 12 1

1

2

3

4

5

6

7

8

C26

10nF 630V TC356

GND

D4

2

7

4

5

4

5

RESONANT CIRCUIT

BZG05C22

L4B

L4C

L5D

HEAT7

HEAT7

HEAT6

1KV

GND

C12

L3D

DIFF8

3

6

3

6

100nF

4

5

3

1

2

1

2

L4D

L5C

L7

HEAT7HEAT6

RES5

1

8

R17

10K

1mH

1

C15

L3A

DIFF8

1KV

8n2

2

D5

D6

0R

Tube Current 1

7

2

R152

BAT48

BZG05C22

GND

Tube Voltage difference

C17 6n8

GND GND

			L5B	GND	2
			L5B	GND
			HEAT6		R19	D7		R20
					20R	MBRS140	C16	R20
		2	7		0.5W		22nF	10K
		2	7		1
D8		R21
BAT48	0R	3K3	DIFF8 L3B GND		GND	D9
R151	0R				R150 0R	D9
					R150 0R	BAT48
					2		Tube Current 2
R22		R24			2
R22		R24		R23	D10
30K		N/P		R23	D10	C18	R25
				20R	MBRS140	22nF	R25
		GND		0.5W			10K
		GND			1

DIFFERENT VOLTAGE SENSING
	GND

TUBE CURRENTS SENSING

Figure 4-4. Dimmable Light Ballast — Inverter

Dimmable Light Ballast with Power Factor Correction, Rev. 1

Freescale Semiconductor

29

Image 29

Freescale Semiconductor M68HC08 4.Dimmable Light Ballast - Inverter, System Modules, Freescale Semiconductor, Half Bridge

Contents

DRM067 Rev. 1 12/2005 Designer Reference ManualM68HC08 Microcontrollers Page Designer Reference Manual Freescale Semiconductor Draft 2 for ReviewChapter Control Theory Contents Chapter IntroductionChapter Reference Design Chapter Hardware DesignAppendix A. Schematics and Part List Chapter Demo SetupChapter Software Design Appendix B. References1.1 Introduction 1.2 Benefits of this SolutionChapter Introduction 1.3 The MC68HC908LB8 Microcontroller 7-bitkeyboard interrupt Freescale Semiconductor Introduction2.1 Introduction Chapter Control Theory2.1.1 Fluorescent Lamp Control Theory 2.1.2 Fluorescent Lamp OperationGas filling mixture Freescale Semiconductor 2.1.3 Controlling the Fluorescent LampFreescale Semiconductor 2.2.1 Introduction 2.2PFC Control TheoryFreescale Semiconductor Freescale Semiconductor Control Theory MCU PWM PWM1 FAULT PINDC Bus Voltage ZeroFigure 2-8.Generated Input Current Waveform 2.2.4 Concept SummaryFreescale Semiconductor Control Theory3.1 Application Outline 3.2 Dimmable Light Ballast CharacteristicsChapter Reference Design Table 3-1.Light Ballast Characteristics 3.3 Application Description3.3.1 Light Ballast Control 3.3.2 Power Factor CorrectionCONTROL BOARD MC68HC908LB83.3.3 Protection Features 3.4 Software Specification3.5 Hardware Specification 4.2 System Modules Chapter Hardware Design4.1 Hardware Implementation Hardware Design 4.2.1 Input and PFCFigure 4-3.Dimmable Light Ballast - Input and PFC Freescale Semiconductor 4.2.2 InverterSystem Modules Figure 4-4.Dimmable Light Ballast - InverterFreescale Semiconductor HALF BRIDGE4.2.3 Microcontroller System Modules SignalPin number TOP BOT Comp Comp Out Zero DetectTable 4-2.J2 Interface Header SignalHardware Design Pin numberTable 4-3.Supplied Voltages 4.2.4 Power SupplyFigure 4-6.Dimmable Light Ballast - Power Supply Freescale Semiconductor Hardware Design5.2 Control Algorithm Description Chapter Software Design5.1 Introduction 5.2.1.2 Phase Shift Synchronization 5.2.1 Power Factor Correction Control5.2.1.4 Generation of Output PFC Control SIgnal 5.2.1.1 DC-busVoltage Control5.2.2.2 Luminance Level Control Tube Run Mode 5.2.2 Light Ballast Control5.2.2.1 Tube Start Mode ireq = A ⋅ ek ⋅ ireqAD + q q = itADmin - A ⋅ ek ⋅ ADminrounditmin ⋅ ADmax ⁄ imax rounditmax ⋅ ADmax ⁄ imax5.3 Software Implementation 5.3.1 Initialization Setup5.3.1.1 PWM Setup PWM Frequency = 5.3.1.2 HRP SetupBusFrequency Hz Hz5.3.2 Main Program Loop Freescale Semiconductor 5.3.3 Synchronization Interrupt Routine5.3.4 Sine Wave Generation Interrupt Routine Software Design Set 1ms flag and reset 1ms counterinterrupt void pwmISRvoid Read new PWM value from table * sineGain5.3.4.1 Fault Detection and Processing Figure 5-6.Flow Chart - timovISR and faultISR 5.4 Detailed Software DescriptionSoftware Design Stop HRPDetailed Software Description Figure 5-7.Flow Chart - Main Flow, PartFreescale Semiconductor Figure 5-8.Flow Chart - Main Flow, PartSoftware Design Freescale Semiconductor Figure 5-9.Flow Chart - Main Flow, PartDetailed Software Description Freescale Semiconductor Figure 5-10.Flow Chart - Main Flow, PartSoftware Design 5.5.1.4 Timer Interface Module TIM 5.5.1.1 High Resolution PWM HRP5.5 Microcontroller Usage 5.5.1 Microcontroller Peripheral Usage5.5.3 I/O Usage 5.6 Definitions of Constants and VariablesSoftware Design I/O pin5.6.1 System Setup Definitions defines the minimum HRP frequency in kHz 5.6.2 System Constants and Variables Page 6.1 Hardware Setup Chapter Demo Setup6.2 Software Setup 6.2.1 Required Software Tools6.2.4 Project Files 6.2.3 Executing the Application\prm\P&E FCS linker.prm, linker program file \Sources\pi controller.c, PI regulators fileA.1 Schematics Appendix A. Schematics and Part ListPFC Current Sense 2.7mHComp PFC GateComp PFC Current SensePFC Gate Zero DetectDCB TOP BOT Figure A-3.InverterO1 O2 O3 O4 O5 O6 O7 O8 COM LOSerial Data TOP BOT Comp - Comp Out Zero DetectSerial Data DCB Divider Tube Current Tube Current Tube Voltage differenceSerial Data5 GNDSerial Data DCB Divider Tube Current Tube Current Tube Voltage differenceFigure A-6.Power supply DESIGNATORS A.2 Parts ListQUANTITY DESCRIPTIONQUANTITY DESIGNATORSDESCRIPTION MANUFACTURERFreescale Semiconductor Appendix B. References Freescale Semiconductor Page Home Page How to Reach UsE-mail USA/Europe or Locations Not Listed