TDA4867J Datasheet, PDF (7/14 Pages) NXP Semiconductors – Full bridge current driven vertical deflection booster

Philips Semiconductors
Full bridge current driven vertical
deflection booster
Preliminary specification
TDA4867J
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
Flyback generator
I_FB(p-p)
V_FB-OUTA
maximum current during flyback on
pin V_FB (peak-to-peak value)
voltage drop during flyback between
pin V_FB and pin OUTA
V_th(OUTA)
switch-on threshold voltage on
pin OUTA
reverse
I_defl = −0.7 A
I_defl = −1.25 A
forward
I_defl = 0.7 A
I_defl = 1.25 A
−
−
2.5
A
−
−2.6 −3
V
−
−3.1 −3.9 V
−
5.2
−
5.7
V_P − 1 −
6.1
V
6.9
V
V_P + 1 V
Guard circuit (pin GUARD)
V_GUARD
I_GUARD
V_ext
output voltage
output current
external voltage
guard on;
I_GUARD = −5 mA
5
6
guard off; I_GUARD = 0 −
−
guard on;
V_GUARD > 5 V
−5
−
for guard function
0
−
for power save mode; 8.2
−
I_GUARD = 0.5 mA
−
V
0.4
V
−
mA
6.5
V
9.5
V
Notes
1. If V_FB is between 40 and 60 V a decoupling capacitor C_FB = 22 µF (between pin V_FB and pin GND) and a resistor
R_FB = 100 Ω (between pin V_FB and flyback supply voltage) are required (see Fig.6).
2. Differential input current I_i(dif) = I_INP − I_INN.
3. Input resistance is 500 Ω.
4. Required V_P depends on the impedance of the deflection yoke.
5. Deviation of the output slope at a constant input slope.
2003 Feb 05
7