TDA4866 Datasheet, PDF (7/16 Pages) NXP Semiconductors – Full bridge current driven vertical deflection booster

Philips Semiconductors
Full bridge current driven vertical deflection
booster
Product specification
TDA4866
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
I_{defl(ripple)} output ripple current as a function of V_P(ripple) = ±0.5 V;
−
±1
−
mA
supply ripple
I_id = 0; closed-loop
Flyback generator
V_{7, 6}
voltage drop during flyback
reverse
forward
V₆
switching on threshold voltage
V₆
switching off threshold voltage
I₇
flyback current during flyback
I_defl = 0.7 A
I_defl = 1.0 A
I_defl = 0.7 A
I_defl = 1.0 A
−
−2.0
−
−2.3
−
+5.6
−
+5.9
V_P − 1 −
V_P − 1.5 −
−
−
−3.0
V
−3.5
V
+6.1 V
+6.5 V
V_P + 1.5 V
V_P + 1 V
±1
A
Guard circuit
V₈
output voltage
guard on
7.5
8.5
10
V
V₈
output voltage
guard on; V_P = 8.2 V 6.9
−
V_P − 0.4 V
I₈
output current
guard on
5
−
−
mA
V₈
output voltage
guard off
−
−
0.4
V
I₈
output current
guard off; V₈ = 5 V
0.5
1
1.5
mA
V_8(ext.)
allowable external voltage on pin 8
0
−
13
V
V_P ≤ 13 V
0
−
V_P + 0.3 V
Notes
1. Up to 60 V ≥ V_FB ≥ 40 V a decoupling capacitor C_FB = 22 µF (between pins 7 and 5) and a resistor R_FB = 100 Ω
(between pin 7 and V_FB) are required (see Fig.4).
2. Saturation voltages of output stages A and B can be increased in the event of negative input currents I_{1, 2} < −500 µA.
3. D_i = ^I--Id--_i-^ed--^f-_c-^l-^c × _I--Id--ⁱ-_ed--_f-_l with I_deflc = common mode deflection current and I_idc = common mode input current.
4. Deviation of the output slope at a constant input slope.
5. Frequency behaviour of G_oi and G_ofb:
a) −3 dB open-loop bandwidth (−45°) at 15 kHz; second pole (−135°) at 1.3 MHz.
b) Open-loop gain at second pole (−135°) 55 dB.
1999 Jun 14
7