Philips Semiconductors
Product specification
Economy Autosync Deflection Controller
(EASDC)
TDA4858
horizontal
flyback pulse
andbook, full pagewidth
V
2
V
CC
R4
HDRV
1
7
6
HORIZONTAL
OUTPUT
STAGE
INVERTING
BUFFER
S
R
Q
Q
OTA
2.5 V
EHT
transformer
D2
3
V
BDRV
5 I
DISCHARGE
MOSFET
TR1
5
3
4
V
V
EHT adjustment
BOP
BSENS
R3
R1
R2
V
BIN
MBG601
D1
C1
4
TR2
C
power-down
BSENS
>2 nF
> 4.7 nF
C
BOP
a. Forward mode application.
handbook, full pagewidth
1
horizontal
flyback pulse
2
3
V
HDRV
t
on
t
V
BDRV
t
(discharge time of C
BSENS
)
off
d(BDRV)
V
V
BOP
BOP
4
5
V
I
BSENS
V
V
RESTART(BSENS)
STOP(BSENS)
MOSFET
MBG602
b. Waveforms for normal operation.
c. Waveforms for fault condition.
Fig.13 Application and timing for feed forward mode.
1997 Oct 27
28
NXP [ NXP ]
