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參數(shù)資料
| 型號： | TDA4867J |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 偏轉(zhuǎn) |
| 英文描述： | Full bridge current driven vertical deflection booster |
| 中文描述： | VERTICAL DEFLECTION IC, PZFM9 |
| 封裝： | PLASTIC, SOT-523-1, DIL-BENT-SIL, 9 PIN |
| 文件頁數(shù)： | 11/14頁 |
| 文件大?。?/td> | 426K |
| 代理商： | TDA4867J |
2003 Feb 05
11
Philips Semiconductors
Preliminary specification
Full bridge current driven vertical
deflection booster
TDA4867J
Example
Table 1
Values given from application diagram Fig.6
Note
1.
Use heatsink compound.
Table 2
Calculated values
Note
1.
T
j(max)
= P
IC
×
[R
th(j-mb)
+ R
th(mb-amb)
] + T
amb
.
SYMBOL
VALUE
UNIT
I
defl
L
deflcoil
R
deflcoil
R
m
R
p
R
ref
V
FB
T
amb
T
deflcoil
R
th(j-mb)
R
th(mb-amb)(1)
0.71
5.2
A
mH
k
V
°
C
°
C
K/W
K/W
5.4 [= 4.2 + 7% +
R(
)]
1 (+1%)
220
3.4
40
50
75
4
6
SYMBOL
VALUE
UNIT
V
P
t
flb
P
tot
P
defl
P
IC
R
th(tot)
T
j(max)(1)
8.5
≈
200
3.4
0.9
2.5
10
75
V
μ
s
W
W
W
K/W
°
C
Calculation formulae for supply voltage:
V
b1
= V
sat(VP-OUTA)
+ R
deflcoil
×
I
defl
U’
L
+ R
m
×
I
defl
+ V
sat(OUTB-GND)
V
b2
= V
sat(OUTA-GND)
+ R
deflcoil
×
I
defl
+ U’
L
+ R
m
×
I
defl
+ V
sat(VP-OUTB)
for V
b1
> V
b2
: V
P
= V
b1
for V
b2
> V
b1
: V
P
= V
b2
where:
U’
L
= L
deflcoil
×
2
×
I
defl
×
f
v
f
v
= vertical deflection frequency.
Calculation formulae for power consumption:
where:
P
IC
= power dissipation of the TDA4867J
P
tot
= total power dissipation
P
defl
= power dissipation of the deflection coil.
Calculation formulae for flyback time (t
flb
):
P
IC
P
tot
P
defl
–
=
P
tot
V
P
I
---2
V
P
+
0.02 A
0.1 W
V
FB
I
FB
×
+
+
×
×
=
P
defl
1
3
R
deflcoil
R
m
+
(
)
×
I
defl
2
×
=
t
flb
L
R
deflcoil
R
m
+
--------------------------------
V
V
FB
deflcoil
R
deflcoil
R
m
R
m
+
+
(
)
)
I
defl
I
defl
×
×
–
-------------------R
ln
×
≈
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