tda4866 NXP Semiconductors, tda4866 Datasheet - Page 12

• Manufacturer Part Number: tda4866
• Description: Full Bridge Current Driven Vertical Deflection Booster
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Example for both TDA4866 and TDA4866J
Table 1 Values given from application
Note
1. A layer of silicon grease between the mounting base
Table 2 Calculated values
Note
1. T
Calculation formula for supply voltage and power
consumption
V
V
for V
for V
with:
2001 Aug 07
I
L
R
R
R
R
V
T
T
R
R
V
t
P
P
P
R
T
defl(max)
flb
b1
b2
deflcoil
amb
deflcoil
j(max)
SYMBOL
FB
SYMBOL
P
tot
defl
IC
U’
f
deflcoil
m
p
ref
th(j-mb)
th(mb-amb)
th(tot)
Full bridge current driven vertical deflection
booster
v
and the heatsink optimizes thermal resistance.
= V
= V
L
= vertical deflection frequency.
b1
b2
j(max)
= L
(1)
> V
> V
6, 3
6
+ R
deflcoil
= P
b2
b1
+ R
(1)
deflcoil
: V
: V
IC
deflcoil
P
P
5.4 [= 4.2 + 7% + R( )]
2I
= V
= V
[R
defl(max)
I
th(j-mb)
defl(max)
b1
b2
I
defl(max)
1 (+1%)
VALUE
VALUE
0.71
3.65
2.75
180
+50
+75
270
+83
+ R
5.2
1.6
8.6
0.9
35
12
4
8
f
+ U’
v
th(mb-amb)
U’
L
+ R
L
+ R
m
] + T
m
I
defl(max)
I
amb
A
mH
k
V
K/W
K/W
V
W
W
W
K/W
defl(max)
C
C
C
s
UNIT
UNIT
+ V
+ V
4, 3
4
12
Calculation formula for flyback time:
t
with:
To achieve good noise suppression the following values
for R
Table 3 Recommended values
P
P
-------------------------------- -
R
P
flb
tot
IC
deflcoil
defl
P
P
P
application (t
C
t
=
L
flb(off)
IC
defl
tot
SP
deflcoil
=
=
p
= power dissipation of the IC
=
).
= total power dissipation.
are recommended:
P
= power dissipation of the deflection coil
V
+
1
-- - R
3
P
tot
= flyback switch off time = 50 s for this
R
L
m
–
(mH)
deflcoil
I
------------------- -
deflcoil
defl(max)
10
15
P
3
6
defl
flb(off)
ln
2
+
1
-------------------------------------------------------------------------- -
1
R
+
–
depends on V
+
m
---------------------------------------------------------------- -
---------------------------------------------------------------- -
V
R
R
P
deflcoil
deflcoil
V
I
V
2
defl(max)
0.03 A
FB
FB
–
+
+
+
R
R
V
V
FB
m
m
7f
+
7r
, I
Product specification
0.1 W
–
–
defl(max)
V
V
I
I
defl(max)
defl(max)
6f
6r
TDA4866
100
180
240
390
( )
R
+
p
V
, L
FB
deflcoil
+
t
flb(off)
I
FB
and