TDA4867J Datasheet, PDF (10/14 Pages) NXP Semiconductors – Full bridge current driven vertical deflection booster

Philips Semiconductors
Full bridge current driven vertical
deflection booster
APPLICATION INFORMATION
Preliminary specification
TDA4867J
handbook, full pagewidth
TDA4867J
VFB
VFB
7
1N4448
OUTA
6
2.2 Ω
BC556
3.3 kΩ
vertical
output
signal
22 µF
VP
2.2
kΩ
guard output,
HIGH = error
BC548
220
kΩ
MGU992
Fig.5 Application circuit for external guard signal generation.
handbook, full pagewidth
1
IINP
from driver circuit
TDA485x or SAA4856
IINN
VP
VFB
TDA4867J
2
3
4
5
6
220 µF
RFB
(1)
(1)
Rm
1Ω
Ldeflcoil = 5.2 mH
Rdeflcoil = 4.2 Ω
RSP ^CSP
10 Ω
(2)
Rp
220 Ω
Rref
3.4 kΩ
CFB
100 µF (VFB < 40 V)
7
8
9
guard output or
power save
mode input
MGU993
(1) If V_FB is between 40 and 60 V a resistor R_FB = 100 Ω and a capacitor C_FB = 22 µF are required.
(2) The value of C_SP is application dependent, but 10 nF minimum is required.
Fig.6 Application diagram with driver circuit TDA485x or SAA4856.
2003 Feb 05
10