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参数资料
| 型号： | TDA4866J |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 偏转 |
| 英文描述： | VERTICAL DEFLECTION IC, PZIP9 |
| 封装： | POWER, PLASTIC, SOT-523-1, DIL-BENT-SIL, 9 PIN |
| 文件页数： | 4/20页 |
| 文件大小： | 108K |
| 代理商： | TDA4866J |
2001 Aug 07
12
Philips Semiconductors
Product specication
Full bridge current driven vertical deection
booster
TDA4866
Example for both TDA4866 and TDA4866J
Table 1
Values given from application
Note
1. A layer of silicon grease between the mounting base
and the heatsink optimizes thermal resistance.
Table 2
Calculated values
Note
1. Tj(max) =PIC × [Rth(j-mb) + Rth(mb-amb)]+Tamb
Calculation formula for supply voltage and power
consumption
Vb1 =V6, 3 +Rdeflcoil × Idefl(max) U’L +Rm × Idefl(max) +V4
Vb2 =V6 +Rdeflcoil × Idefl(max) +U’L +Rm × Idefl(max) +V4, 3
for Vb1 >Vb2 :VP =Vb1
for Vb2 >Vb1 :VP =Vb2
with:
U’L =Ldeflcoil × 2Idefl(max) × fv
fv = vertical deflection frequency.
PIC = power dissipation of the IC
Pdefl = power dissipation of the deflection coil
Ptot = total power dissipation.
Calculation formula for flyback time:
tflb =
with:
tflb(off) = flyback switch off time = 50 s for this
application (tflb(off) depends on VFB,Idefl(max),Ldeflcoil and
CSP).
To achieve good noise suppression the following values
for Rp are recommended:
Table 3
Recommended values
SYMBOL
VALUE
UNIT
Ide(max)
0.71
A
Ldecoil
5.2
mH
Rdecoil
5.4 [= 4.2 + 7% +
R()]
Rm
1 (+1%)
Rp
180
Rref
1.6
k
VFB
35
V
Tamb
+50
°C
Tdecoil
+75
°C
Rth(j-mb)
4
K/W
Rth(mb-amb)(1)
8
K/W
SYMBOL
VALUE
UNIT
VP
8.6
V
tb
270
s
Ptot
3.65
W
Pde
0.9
W
PIC
2.75
W
Rth(tot)
12
K/W
Tj(max)(1)
+83
°C
Ldecoil
(mH)
Rp
(
)
3
100
6
180
10
240
15
390
P
tot
V
P
I
defl(max)
2
--------------------
V
P
+
0.03 A
0.1 W
V
FB
I
FB
×
++
×
=
P
defl
1
3
--- Rdeflcoil Rm
+
() I
defl(max)
2
×
=
P
IC
P
tot
P
defl
–
=
L
deflcoil
R
deflcoil
R
m
+
---------------------------------
1
R
deflcoil
R
m
+
() I
defl(max)
×
V
FB
V
7r
V
6r
–
+
-----------------------------------------------------------------
+
1
R
deflcoil
R
m
+
() I
defl(max)
×
V
FB
V
7f
V
6f
–
()
–
-----------------------------------------------------------------
–
---------------------------------------------------------------------------
ln
×
t
flb(off)
+
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相关代理商/技术参数 |
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|---|---|
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| TDA4867J | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Full bridge current driven vertical deflection booster |
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