tda4855 NXP Semiconductors, tda4855 Datasheet - Page 28

• Manufacturer Part Number: tda4855
• Description: Autosync Deflection Controller Asdc
• Manufacturer: NXP Semiconductors

Philips Semiconductors
1996 Jul 18
handbook, full pagewidth
handbook, full pagewidth
Autosync Deflection Controller (ASDC)
4
5
1
2
3
EHT adjustment
V HDRV
V BDRV
V BSENS
I MOSFET
horizontal
flyback pulse
b. Waveforms for normal operation.
V BOP
power-down
R1
t on
V BIN
t d(BDRV)
2.5 V
5
TR2
Fig.13 Application and timing for feed forward mode.
R2
OTA
D1
C1
C BOP
2
V BOP
3
a. Forward mode application.
V HDRV
4.7 nF
4
V BSENS
4
C BSENS
2 nF
R3
V BOP
28
7
DISCHARGE
S
R
Q
Q
c. Waveforms for fault condition.
t off
6
V CC
(discharge time of C BSENS )
3
INVERTING
R4
V BDRV
BUFFER
transformer
TR1
HORIZONTAL
EHT
OUTPUT
Preliminary specification
STAGE
V RESTART(BSENS)
V STOP(BSENS)
flyback pulse
5
TDA4855
horizontal
1
I MOSFET
MBG601
D2
MBG602