TDA4864J Datasheet, PDF (11/16 Pages) NXP Semiconductors – Vertical deflection booster

Philips Semiconductors
Vertical deflection booster
Product specification
TDA4864J; TDA4864AJ
APPLICATION INFORMATION
handbook, full pagewidth
VF
2
TDA4864J
5
1N4448
2.2 Ω
BC556
vertical
output
signal
VP
3.3 kΩ
22 µF
>1 kΩ
guard output
HIGH = error
BC548
220 kΩ
Fig.8 Application circuit with TDA4864J for external guard signal generation.
handbook, full pagewidth
THERMAL
PROTECTION
TDA4864J
DIFFERENTIAL
INPUT
STAGE
VERTICAL
OUTPUT
FLYBACK
GENERATOR
REFERENCE
CIRCUIT
7
6
INP INN
from
deflection controller
R3
1.8 kΩ
R2
1.8 kΩ
CS2⁽¹⁾
RS2
5.6 Ω
RP
270 Ω
5
43
V-OUT
GND VP2
RS1 ^CS1
5.6 Ω ₁₀₀
nF
deflection
coil
470 µF
R1
1Ω
(1 W)
VN
−8 V
2
1
VFB
VP1
D1
BYV27
470 µF
470 µF
4.3 Ω
VF
+50 V
VP
+9 V
Attention: the heatsink of the IC must be isolated against ground of the application (it is connected to pin GND).
(1) With C_S2 (typical value between 47 and 150 nF) the flyback time and the noise behaviour can be optimized.
Fig.9 Application circuit with TDA4864J.
2003 Oct 31
11