TDA4841 datasheet(44/60 Pages) PHILIPS

44 / 60 page

1999 Oct 25

Philips Semiconductors

Product speciﬁcation

I2C-bus autosync deﬂection controller for

PC monitors

TDA4841PS

APPLICATION INFORMATION

Fig.25 Application and timing for feedback mode.

For f < 50 kHz and C2 < 47 nF calculation formulas and behaviour of the OTA are the same as for an OP. An exception is the limited output current at

BOP (pin 3). See Chapter “Characteristics”, subheading “B+ control section; see Figs 25 and 26”.

(1) The recommended value for R6 is 1 k

Ω.

a. Feedback mode application.

b. Waveforms for normal operation.

c. Waveforms for fault condition.

handbook, full pagewidth

SOFT START

HORIZONTAL

OUTPUT

STAGE

VHDRV

VCC

TR1

R6(1)

OTA

2.5 V

VHPLL2

VBIN

VBOP

VBSENS

VBDRV

CBOP

EWDRV

>10 nF

horizontal

flyback pulse

INVERTING

BUFFER

MGM080

DISCHARGE

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VHDRV

VBSENS

VBSENS = VBOP

VBDRV

toff(min)

ton

horizontal

flyback pulse

VRESTART(BSENS)

VSTOP(BSENS)

MBG600

td(BDRV)

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