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MGT991

RIREF

33 k

Ω

VREF

FVDD

DVDD

ZVDD

13 V

GH

SH

GL

ACM

1

7

LVS

CS

−

CS

+

VDD

CT

9

10

11

6

45

3

2

14

12

13

16

15

CSW

CF

GND

IREF

CCF

100 pF

CCSW

220 nF

Cpwr

1 nF

Cres2

1 nF

Clamp1

47 pF

Clamp2

47 pF

Cres1

1 nF

CLVS3

56 nF

CLVS2

8.2 nF

CBR2

18 nF

CDC

220 nF

CBR1

1 nF

Cboot

100 nF

CCT

330 nF

CVDD

1

µF

VDC

300 V

UBA2070

HIGH SIDE

DRIVER

LOW SIDE

DRIVER

BOOTSTRAP

DRIVER

CONTROL

SUPPLY

IGNITION

TIMER

REFERENCE

CURRENT

DIVIDER

ADAPTIVE

NON-OVERLAP

TIMING

CAPACITIVE

MODE DETECTOR

LAMP

VOLTAGE

SENSOR

−

+

+

AVERAGE

CURRENT

SENSOR

VOLTAGE

CONTROLLED

OSCILLATOR

RVDD

470 k

Ω

Rpwr2

8.2 k

Ω

RLVS

150 k

Ω

DLVS2

DLVS1

RACM

1.5

Ω

Rpwr1

220 k

Ω

CLVS1

8.2 nF

Ravg

8.2 k

Ω

RGH

Ths

Tls

47

Ω

Cavg

12 nF

Rsense

2.2

Ω

RGL

47

Ω

Fig.8 Test application circuit.