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TDA8351AQ Datasheet, PDF (2/16 Pages) NXP Semiconductors – DC-coupled vertical deflection output circuit | |||
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Philips Semiconductors
DC-coupled vertical deï¬ection output
circuit
Product speciï¬cation
TDA8351AQ
FEATURES
⢠Few external components
⢠Highly efficient fully DC-coupled vertical output bridge
circuit
⢠Vertical flyback switch
⢠Guard circuit
⢠Protection against:
â short-circuit of the output pins (9 and 5)
â short-circuit of the output pins to VP
⢠Temperature protection
⢠High EMC immunity because of common mode inputs
⢠A guard signal in zoom mode.
GENERAL DESCRIPTION
The TDA8351A 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
VP
Iq
Vertical circuit
supply voltage
quiescent supply current
9
16
25
V
â
30
â
mA
IO(p-p)
Idiff(p-p)
Vdiff(p-p)
output current
(peak-to-peak value)
differential input current
(peak-to-peak value)
differential input voltage
(peak-to-peak value)
â
â
3
A
â
600
â
µA
â
1.8
â
V
Flyback switch
IM
peak output current
t ⤠1.5 ms
â
â
±1.5
A
VFB
ï¬yback supply voltage
â
â
50
V
note 1
â
â
60
V
Thermal data (in accordance with IEC 747-1)
Tstg
Tamb
Tvj
storage temperature
operating ambient temperature
virtual junction
â55
â
â25
â
â
â
+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 ⦠resistor
(depending on IO and the inductance of the coil) has to be connected between pin 9 and ground. The decoupling
capacitor of VFB has to be connected between pin 8 and pin 4. This supply voltage line must have a resistance of
33 ⦠(see application circuit Fig.5).
1999 Sep 27
2
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