TDA8351 Datasheet, PDF (2/16 Pages) NXP Semiconductors – DC-coupled vertical deflection circuit

Philips Semiconductors
DC-coupled vertical deflection circuit
Product specification
TDA8351
FEATURES
• Few external components
• Highly efficient fully DC-coupled vertical output bridge
circuit
• Vertical flyback switch
• Guard circuit
• Protection against:
– short-circuit of the output pins (7 and 4)
– short-circuit of the output pins to V_P
• Temperature protection
• High EMC immunity because of common mode inputs
• A guard signal in zoom mode.
GENERAL DESCRIPTION
The TDA8351 is a power circuit for use in 90° and 110°
colour deflection systems for field frequencies of 50 to
120 Hz. The circuit provides a DC driven vertical
deflection output circuit, operating as a highly efficient
class G system.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS MIN.
TYP.
MAX.
UNIT
DC supply
V_P
I_q
Vertical circuit
supply voltage
quiescent supply current
9
−
25
V
−
30
−
mA
I_O(p-p)
I_diff(p-p)
V_diff(p-p)
output current
(peak-to-peak value)
differential input current
(peak-to-peak value)
differential input voltage
(peak-to-peak value)
−
−
3
A
−
600
−
µA
−
1.5
1.8
V
Flyback switch
I_M
peak output current
−
−
±1.5
A
V_FB
flyback supply voltage
−
−
50
V
note 1
−
−
60
V
Thermal data (in accordance with IEC 747-1)
T_stg
T_amb
T_vj
storage temperature
operating ambient temperature
virtual junction temperature
−55
−
−25
−
−
−
+150
°C
+75
°C
150
°C
Note
1. A flyback supply voltage of >50 V up to 60 V is allowed in application. A 220 nF capacitor in series with a 22 Ω resistor
(depending on I_O and the inductance of the coil) has to be connected between pin 7 and ground. The decoupling
capacitor of V_FB has to be connected between pin 6 and pin 3. This supply voltage line must have a resistance of
33 Ω (see application circuit Fig.6).
1999 Sep 27
2