dt8211 inverter driver ic (application notemonitor.espec.ws/files/dt8211_188.pdfdmb technology inc,....

DT8211 Inverter Driver IC (Application Note)

2008.7.11DMB Technology Inc,.

Simple is Smartⓒ 2008 DMBTech. All Rights Reserved.

Pinning information

Supply VoltageIVCC18

High Side Gate Driver OutputOHOUT17

Low Side Gate Driver OutputOLOUT16

GroundIGND14,15

Error Amplifier Output for Voltage RegulationOVCMP13

Error Amplifier Output for Current RegulationOICMP12

Feedback Input for Voltage Regulation IVFB11

Feedback Input for Current Regulation IIFB10

Protection PinIPROT9

Frequency Setting Capacitor for Burst Dimming FrequencyOCTB8

Frequency Setting Capacitor for Main PWM FrequencyOCT7

Frequency Setting Resistor for Main PWM FrequencyORT6

Frequency Setting Resistor for Striking PWM FrequencyORTS5

Burst Dimming Pin (Positive and Negative Mode)IBDIM4

Analog Dimming Pin (Positive and Negative Mode)IADIM3

ON/OFF Control PinIEN2

Reference Voltage (VREF) = 6VOVREF1

DescriptionI/OSymbolPIN

Top View


2V Ref.

LTAOTA

COMP

2.0V

0.8V

BurstOn/Off

2V Ref.

Fast Response

OTA

COMP

3.0V

1.2V

EN

FF QR

SVREF

3V Ref.COMP

0.5uA

High PrecisionDual Oscillator

Block(Main/Burst)

Pulse Distributorand

Dead TimeGenerator

GD

GD

Startupand

Voltage ReferenceInternal Bias

2.0V

6.0V

Open LampDetection

andFrequencyShift Block

18VCC

2EN

13VCMP

12ICMP

3ADIM

10IFB

11VFB

4BDIM

6RT

7CT

8CTB

9PROT

17 HOUT

16 LOUT

1 VREF

14 GND

Positive & NegativeControl Block

Positive & NegativeControl Block

5RTS

15 GND

DT8211 (Block Diagram)


DT

8211

Inverter Part (Block Diagram)


Power Supply (VCC, VREF, GND)

- VCC : Power Supply Input (+8V~ +45V)

- VREF : 6V Regulator Output

- EN : ON / OFF Control Pin

- GND : Ground


Power Supply (VCC, VREF, GND) Block Diagram


Analog Dimming

- ADIM : Analog Dimming DC level Input

Positive and Negative Mode Selectable

Tip- Polarity & Dimming Range is selectable

by controlling RIN , RH, RL value.- Non-function Adim : Remove RIN , RH, RL

; When Adim Pin is opened, Adim is Max

Negative Mode

Positive Mode

VREF

EN

ADIM

BDIM

RTS

RT

CT

CTB

VCC

HOUT

LOUT

GND

GND

VCMP

ICMP

VFB

ADIM Pin Voltage (IC:3Pin)0 2.52.0 3.0 5V

ADIM Pin Voltage Range

MAX

Decrease Increase

VCC

VREF

On

On On

On

Hout

Lout

PROT IFB

Lamp Current


Analog Dimming Block Diagram


Burst Dimming

- BDIM : Burst Dimming DC level Input

Positive and Negative Mode Selectable

Tip- Polarity & Dimming Range is selectable

by controlling RIN , RH, RL value.- Non-function Bdim : Remove RIN , RH, RL

; When Bdim Pin is opened, Bdim is Max

Negative Mode

Positive Mode

VREF

EN

ADIM

BDIM

RTS

RT

CT

CTB

VCC

HOUT

LOUT

GND

GND

VCMP

ICMP

VFB

BDIM Pin Voltage (IC:4Pin)0 2.52.0 3.0 5V

BDIM Pin Voltage Range

MAX

Decrease Increase

VREF

VCC

PROT IFBOutput Current

Lamp Current


Burst Dimming (Pulse Dimming)

- BDIM : External Pulse Dimming Input


Burst Dimming Block Diagram


Burst Dimming Waveform

CTBBDIM

HOUT

LOUT

+2V

+0.8V

+2V

+0.8V

+2V

+0.8V

- Positive Mode

- Negative Mode

CTBBDIM

HOUT

LOUT

+2V

+0.8V

+2V

+0.8V

+2V

+0.8V

Bdim Pin Voltage : 1.102V Bdim Pin Voltage : 1.502V Bdim Pin Voltage : 1.937V

Bdim Pin Voltage : 3.126V Bdim Pin Voltage : 3.543V Bdim Pin Voltage : 4.027V


Frequency Setting (Main/ Burst/ Striking Frequency)

- RTS : Frequency Trimming Resistor for Striking Frequency Setting

- RT : Frequency Trimming Resistor for Main and Burst Frequency Setting

- CT : Frequency Trimming Capacitor for Main Frequency Setting

- CTB : Frequency Trimming Capacitor for Burst Dimming Frequency Setting

TCTRMainf 232.0=

TRTBCBurstf 11.0=

TCTSRTRTSRTR

STKf )(228.0 +=

Tip- Under Open Lamp Protection, Striking

Frequency is controlled by changing RST value.

DT

8211


Main/ Burst/ Striking Frequency Setting Block Diagram


IFB & VFB & ICMP & VCMP

- IFB : Feedback of Current ( Error Amplifier Negative Input)

- VFB : Feedback of Voltage ( Error Amplifier Negative Input)

- ICMP : Error Amplifier Output for Current Feedback

- VCMP : Error Amplifier Output for Voltage Feedback

Tip- Rising/falling time is controlled based on ICMP Pin Cap size at Burst Dimming.(Soft Start))


IFB & VFB & ICMP & VCMP Block Diagram


HOUT & LOUT

- HOUT : High Side Gate Driver Output for P Channel MOSFET Direct Driving

- LOUT : Low Side Gate Driver Output for N Channel MOSFET Direct Driving

LOUTGateDriver

GateDriver

HOUT

MOSFET Gate Driver Included


HOUT & LOUT Block Diagram


Open Lamp Protection

-PROT : Protection Time Trimming Pin

Tip- OLP Time is controlled by

PROT Pin Cap size.

6PROT

PROT 100.53CT −×

=


Short Circuit Protection (HOT-GND Short)



PROT Pin Cap size.

6PROT

PROT 100.53CT −×

=


Short Circuit Protection (COLD-GND Short)



PROT Pin Cap size.

6PROT

PROT 100.53CT −×

=


Open Lamp Detection Sequence

t

Lout (Gate)

t1 t2 t3Normal Operation

0V

Protection Delay

Open Lamp State Sequence

t

t

IFB

0V

6V

0V PROT

2V

3V

OLP Time

Open Lamp Time

3V


Protection (Open Lamp Detection Diagram)


Open Lamp Regulation(= Over Voltage Protection Sequence)

V_FB1 (Open)

V_FB2

V_FB3

V_FB4

VFB

OTA

+2VVCMP

CMP

ICMP

CT

LTA

R1C1

Duty Decrease

VCMP_Pin

VFB_Pin

Tip- OLR Level is set by controlling

R1 value.

t

Lout (Gate)

t1 t2 t3Duty Fixed

0V

Frequency Shift

Max Duty

Open Lamp State Sequence

t

t

IFB

0V

0V PROT

2V

3V

OLP Time

Open Lamp Time

3V

6V

0V

ICMP

VCMP

2V

0V

Duty Decrease(OLR)

Frequency (50kHz)

Open Lamp Regulation Zone

3.2V

0.75V

2V

3.5V

0VVFB

Shutdown Mode StartStriking Mode Start

IC Shutdown

No Output


Protection

Ø OLP – Open Lamp Protection

Ø SCP – Short Circuit Protection

Ø OVP – Over Voltage Protection

- When the voltage of Lamp is OVER, OVP function is activated.

- When Lamp is OPEN, OLP function is activated.

- When the HOT of Lamp is short to GND, SCP function is activated.

- When the COLD of Lamp is short to GND, SCP function is activated.


Open Lamp Protection & Striking mode Condition

Ø Striking Mode Condition

IFB<0.75V

&

ICMP>3.5V

Striking Mode

-RTS PIN goes to 0V

-BDIM Disable

Ø Shutdown Condition

IFB<0.75V

Shutdown Mode

- CPROT will be charged by the 0.5uA

è VPROT goes UP.

è If VPROT > 3V, IC Shutdown

Simple is Smartⓒ 2008 DMBTech. All Rights Reserved. 19

Application Circuit of DT8211 @ 4Lamp

1 2 3 4 5 6 7 8

VREF

EN

AD

IM

BD

IM

RTS

RT

CT

CT

B

DT8211

9P

RO

T1

0

11

12

13

14

15

16

17

18

VCC

HO

UT

LOU

T

GN

D

GN

D

VC

MP

ICM

P

VFB

IFB

J1

25043WR-06

123456

VREF

ADIM

C33216/10uF/16V

D

D

S

S

Q2

STM8319

3

2

1

4

87

56

C13216/10uF/16V

D1BAV70

21

3

D6BAV70

21

3

R23

47k/

1%

C15

1n

C35

3.3n

U1 DT8211

VREF1

EN2

VCMP13GND14

ICMP12

CT7

VFB11

VCC18

IFB10

HOUT17

BDIM4

RTS5

RT6

CTB8

ADIM3

PROT9

GND15LOUT16ADIM

BDIM

VFB2

VFB1

VFB4

VFB3

C16

100n

C17

1n

R13

100k

C18

100p

/CO

G

C19

6.8n

C20

1.8n

C21

220n

EN_INVREF

C22

1n

C23

1n

R14

100k

Pin Description1.VCC = 8V~45V

C24

47n

5.GND6.GND

IFB

C25

330n

3.BDIM = 0~4.5V(P)2.Ena = TTL LEVEL

4.ADIM = 0~3.3V(P)

Burst Frequency = 300Hz+-20HzLamp Frequency = 50kHz+-3kHzSpecification

Output Current = 3.5mA~7.5mAStriking Voltage = 1.6kV rms

HOUTLOUT

VCC

C26

100n

VCC

VREF

R8

3k

R9

3k

R10

3k

R11

3k

R22

470/

1%

C36

3.3n

R54.7R

R21

470/

1%

R20

470/

1%

EN

BDIMBDIM_IN

R111k

R19

470/

1%

R64.3k

R318k

C13100n

VREF

HOUT

R18

2k/1

%

R17

2k/1

%

C32

1u

R16

2k/1

%

VCC

R15

2k/1

%

VFB1

VFB4

C30

10n

C29

10n

C28

10n

C27

10n

C12

5pF/

3kV

R1247k

C11

5pF/

3kV

LOUT

C9

5pF/

3kV

C8

5pF/

3kV

D2

BAV70

21

3

J2

35001WR-02

12C2

3216/10uF/16V

D3

BAV70

21

3

J3

35001WR-02

12

J4

35001WR-02

12

J5

35001WR-02

12

D4

BAV70

21

3 D5

BAV70

21

3

C381n

T1

2

1

3

4

8

7

9

6

C34

3.3n

HOUTD

D

S

S

Q1

STM8319

3

2

1

4

87

56

LOUT

LV1LV2

LV4

FU13216/3.0A/24V

BDIM_INADIM_IN

IFB

+ C5

25V

/100

0uF

LV3

HV1

HV2

HV3

HV4

C37

3.3n

LV2

LV3

LV4

LV1

HV3HV2

HV1

VFB2VFB3

HV4

ADIM_IN

R222k

R79.1k

R49.1k

C14100n

Option

C31

1u


1 2 3 4 5 6 7 8

VREF

EN

AD

IM

BD

IM

RTS

RT

CT

CT

B

DT8211

9P

RO

T1

0

11

12

13

14

15

16

17

18

VCC

HO

UT

LOU

T

GN

D

GN

D

VC

MP

ICM

P

VFB

IFB

20

Application Circuit of DT8211 Without OLR

J1

25043WR-06

123456

VREF

ADIM

C33216/10uF/16V

D

D

S

S

Q2

STM8319

3

2

1

4

87

56

C13216/10uF/16V

R23

47k/

1%

C15

1n

U1 DT8211

VREF1

EN2

VCMP 13GND 14

ICMP 12CT7

VFB 11

VCC 18

IFB 10

HOUT 17

BDIM4

RTS5

RT6

CTB8

ADIM3

PROT9

GND 15LOUT 16ADIMBDIM

C16

100n

C17

1n

R13

100k

C18

100p

/CO

G

C19

6.8n

C20

1.8n

C21

220n

EN_INVREF

IFB

C22

1n


C24

47n

5.GND6.GND

C25

330n


4.ADIM = 0~3.3V(P)



HOUTLOUT

VCC

C26

100n

VCC

VREF

R22

470/

1%

R54.7R

R21

470/

1%

R20

470/

1%

EN

BDIMBDIM_IN

R111k

R19

470/

1%

R64.3k

R318k

C13100n

VREF

HOUT

R18

2k/1

%

R17

2k/1

%

C32

1u

R16

2k/1

%

VCC

R15

2k/1

%

HV2

HV1

HV4

HV3

C30

10n

C29

10n

C28

10n

C27

10n

R1247k

LOUT

C95pF/3kV

C85pF/3kV

D2

BAV70

21

3

C23216/10uF/16V

J2

35001WR-02

12

D3

BAV70

21

3

J3

35001WR-02

12

J4

35001WR-02

12

J5

35001WR-02

12

D4

BAV70

21

3 D5

BAV70

21

3

C381n

T1

2

1

3

4

8

7

9

6

HOUTD

D

S

S

Q1

STM8319

3

2

1

4

87

56

LOUT

LV1LV2

LV4

FU13216/3.0A/24V

BDIM_INADIM_IN

IFB

+ C5

25V

/100

0uF

LV3

HV1

HV2

HV3

HV4

LV2

LV3

LV4

LV1

ADIM_IN

R222k

R79.1k

R49.1k

C14100n

Option

C31

1u


1 2 3 4 5 6 7 8

VREF

EN

AD

IM

BD

IM

RTS

RT

CT

CT

B

DT8211

9P

RO

T1

0

11

12

13

14

15

16

17

18

VCC

HO

UT

LOU

T

GN

D

GN

D

VC

MP

ICM

P

VFB

IFBApplication Circuit of DT8211 For Low Price

(Only Open Lamp Protection Function)

21

J1

25043WR-06

123456

VREF

ADIM

C33216/10uF/16V

D

D

S

S

Q2

STM8319

3

2

1

4

87

56

C13216/10uF/16V

R23

47k/

1%

C15

1n

U1 DT8211

VREF1

EN2

VCMP13GND14

ICMP12

CT7

VFB11

VCC18

IFB10

HOUT17

BDIM4

RTS5

RT6

CTB8

ADIM3

PROT9

GND15LOUT16ADIM

BDIM

C16

100n

C17

1n

R13

100k

C18

100p

/CO

G

C19

6.8n

C20

1.8n

C21

220n

EN_INVREF

IFB

C22

1n


C24

47n

5.GND6.GND

C25

330n


4.ADIM = 0~3.3V(P)



HOUTLOUT

VCC

C26

100n

VCC

VREF

R22

470/

1%

R54.7R

R21

470/

1%

R20

470/

1%

EN

BDIMBDIM_IN

R111k

R19

470/

1%

R64.3k

R318k

C13100n

VREF

HOUT

R17

2k/1

%

C32

1u

VCC

R15

2k/1

%

HV2

HV1

HV4

HV3

C29

10n

C27

10n

R1247k

LOUT

C95pF/3kV

C85pF/3kV

D2

BAV70

21

3

C23216/10uF/16V

J2

35001WR-02

12

J3

35001WR-02

12

J4

35001WR-02

12

J5

35001WR-02

12

D4

BAV70

21

3

C381n

T1

2

1

3

4

8

7

9

6

HOUTD

D

S

S

Q1

STM8319

3

2

1

4

87

56

LOUT

LV1LV2

LV4

FU13216/3.0A/24V

BDIM_INADIM_IN

IFB

+ C5

25V

/100

0uF

LV3

HV1

HV2

HV3

HV4

LV2

LV3

LV4

LV1

ADIM_IN

R222k

R79.1k

R49.1k

C14100n

Option

C31

1u

dt8211 inverter driver ic (application notemonitor.espec.ws/files/dt8211_188.pdfdmb technology inc,....

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