TDA4863J Datasheet, PDF (13/20 Pages) NXP Semiconductors – Vertical deflection booster

Philips Semiconductors
Vertical deflection booster
Product specification
TDA4863J; TDA4863AJ
Example for both TDA4863J and TDA4863AJ
Table 1 Values given from application
SYMBOL
I_{defl(max)}
L_deflcoil
R_deflcoil
R_P
R1
R2
R3
V_FB(1)
T_amb
T_deflcoil
R_th(j-mb)
R_th(mb-amb)
VALUE
0.71
6
6
270
1
1.8
1.8
50
60
75
6
8
UNIT
A
mH
Ω
Ω
Ω
kΩ
kΩ
V
°C
°C
K/W
K/W
Note
1. For TDA4863J only.
Table 2 Calculated values
SYMBOL
V_P1
V_N
P_tot
P_defl
P_IC
R_th(tot)
T_j(max)
VALUE
TDA4863J TDA4863AJ
UNIT
9
12.5
V
−8
−12.5 V
3.2
4.4
W
1.2
1.2
W
2
3.2
W
14
14
K/W
88
105
°C
V_P1, V_N and V_FB are referenced to ground of application;
voltages are calculated with +10% tolerances.
Calculation formulae for supply voltages:
V_P1 = −V_5-3 + (R1 + R_deflcoil) × I_defl(max) − U’_L + U_D1
V_N = V_5-4 + (R1 + R_deflcoil) × I_defl(max) + U’_L
where
U’_L = L_deflcoil × 2I_defl(max) × f_v
f_v = vertical deflection frequency
U_D1 = forward voltage drop across D1.
Calculation formulae for power consumption:
P_IC = P_tot – P_defl
P_tot = (V_P1 – U_D1) × ^I--d---^e--^f--^l_4-⁽-^m----^a--^x---⁾ + V_N × ^I--d---^e--^f--^l_4-⁽-^m----^a--^x---⁾
+ (V_P1 – V_N) × 0.01 A + 0.2 W
P_defl = -R----^d---^e--^f-^l-^c---^o_3--ⁱ-^l---⁺-----R----1-- × I_d2efl(max)
where
P_IC = power dissipation of the IC
P_tot = total power dissipation
P_defl = power dissipation of the deflection coil.
Calculation formulae for maximum required thermal
resistance for the heatsink at T_j(max) = 110 °C:
R_th(mb-amb)
=


T----_{j-(--m----a--x-P-)---I}–_{-C----T----a--m----b-}
– R_th(j-mb)
=
19
K/W (max.)
Table 3 t_flb as a function of V_FB for TDA4863J
t_flb (µs)
350
250
210
V_FB (V)
30
40
50
Table 4 t_flb as a function of V_P1 and V_N for TDA4863AJ
t_flb (µs)
360
290
240
V_P1 (V)
10
12.5
15
V_N (V)
−10
−12.5
−15
P_IC (W)
2.5
3.2
3.9
R6 (Ω)
1
3.9
6.8
2000 Aug 17
13