Philips Semiconductors
Product specification
I2C-bus autosync deflection controller for
PC monitors
TDA4841PS
APPLICATION INFORMATION
V
CC
handbook, full pagewidth
V
i
2
V
V
(1)
V
HDRV
HPLL2
R6
6
L
3
BDRV
D2
SOFT START
OTA
S
R
Q
Q
2.5 V
TR1
INVERTING
BUFFER
HORIZONTAL
OUTPUT
STAGE
DISCHARGE
5
3
4
D1
C1
1
horizontal
flyback pulse
V
V
BIN
BOP
R5
4
R1
R3
V
BSENS
R4
C4
R2
MGM080
C2
C
BOP
>10 nF
EWDRV
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 kΩ.
a. Feedback mode application.
handbook, full pagewidth
1
horizontal
flyback pulse
2
3
V
HDRV
t
on
t
V
BDRV
t
d(BDRV)
off(min)
V
= V
BSENS
V
BOP
V
4
RESTART(BSENS)
BSENS
V
STOP(BSENS)
MBG600
b. Waveforms for normal operation.
c. Waveforms for fault condition.
Fig.25 Application and timing for feedback mode.
1999 Oct 25
44
NXP [ NXP ]
