KKA8351 Datasheet, PDF (1/6 Pages) KODENSHI KOREA CORP. – DC-COUPLED VERTICAL DEFLECTION CIRCUIT

TECHNICAL DATA
DC-COUPLED VERTICAL DEFLECTION CIRCUIT
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 VP
• Temperature (thermal) protection
• High EMC immunity because of common mode
inputs
• A guard signal in zoom mode.
GENERAL DESCRIPTION
The KKA8351 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
l _o(p-p)
I _diff(p-p)
V _diff(p-p)
Flyback switch
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
I_M
peak output current
V_fb
flyback supply voltage
Thermal data (in accordance with IEC 747-1)
note 1
-
-
±1.5 A
-
-
50
V
-
-
60
V
T _stg
storage temperature
-55
-
+150 °C
l_amb
operating ambient temperature
-25
-
+75 °C
T_vj
virtual junction temperature
-
-
150 °C
Note
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 (dependent 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. The supply voltage line must have a resistance of 33
Ω.
1