|
TDA4860 Datasheet, PDF (3/12 Pages) NXP Semiconductors – Vertical deflection power amplifier for monitors | |||
|
◁ |
Philips Semiconductors
Vertical deï¬ection power ampliï¬er for
monitors
BLOCK DIAGRAM
Product speciï¬cation
TDA4860
handbook, full pagewidth
VOLTAGE
STABILIZER
VERTICAL
DRIVER
TDA4860
THERMAL AND
SOAR
PROTECTION
FLYBACK
DRIVER
DIFFERENTIAL
INPUT
AMPLIFIER
VERTICAL
OUTPUT
FLYBACK
GENERATOR
PULSE
CIRCUIT
+8.8 V
150 kâ¦
1
2
VP1
470
µF
from TDA4850
1 Mâ¦
V-shift
3
BAX13
4
5
VP2 V-OUT
6
SUB
270 â¦
1.8 kâ¦
1.8 kâ¦
R1
1â¦
5.6 â¦
0.1 µF
yoke
470 µF
VN
â8.1 V
7
8
9
FLB
VP3
PCO
470 µF
4.3 â¦
10 k⦠RPCO
+52 V
MHA591
Assumed values:
Iyoke = 1.42 A.
Ryoke = 4.17 ⦠+ 7% + âR(T) = 6.12 â¦.
Lyoke = 5.25 mH.
R1 = 1.0 ⦠±1%.
Tamb = 65 °C.
Tj(max) = 105 °C.
Tyoke = 75 °C.
Pyoke = 1.2 W.
PIC = 1.8 W.
Ptot = 3.0 W.
tp FLB = typically 250 µs.
Attention: the heatsink of the IC must be isolated against ground; the cooling fin is connected to pin 6.
Fig.1 Block diagram and application circuit with flyback supply voltage VP3 from an external source.
Deflection frequency range from 50 Hz to 100 Hz.
1997 Oct 27
3
|
▷ |