NTE7156
Integrated Circuit
DC鈥揅oupled Vertical Deflection Circuit
Description:
The NTE7156 is a power circuit in a 9鈥揕ead SIP type package designed for use in 90擄 and 110擄 color
deflection systems for field frequencies of 50Hz to 120Hz. This device provides a DC driven vertical
deflection output circuit, operating as a highly efficient class G system.
Features:
D
Few External Components
D
Highly Efficient Fully DC鈥揅oupled Vertical Output Bridge Circuit
D
Vertical Flyback Switch
D
Guard Circuit
D
Protection Aaginst:
鈥?Short鈥揅ircuit of the Output Pins (7 and 4)
鈥?Short鈥揅ircuit of the Output Pins to V
P
D
Temperature Protection
D
High EMC Immunity Because of Common Mode Inputs
D
A Guard Signal in Zoom Mode
Absolute Maximum Ratings:
DC Supply
Supply Voltage, V
P
Non鈥揙perating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
Operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25V
Flyback Supply Voltage, V
FB
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50V
Note 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60V
Vertical Circuit
Output Current (Peak鈥搕o鈥揚(yáng)eak Value, Note 2), I
O(P鈥揚(yáng))
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3A
Output Voltage (Pin7), V
O(A)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52V
Note 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62V
Flyback Switch
Peak Output Current, I
M
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
鹵15A
Thermal Data
Virtual Junction Temperature, T
VJ
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150擄C
Operating Ambient Temperature Range, T
A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?0擄 to +75擄C
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?5擄 to +150擄C
Thermal Resistance, Virtual Junction鈥搕o鈥揂mbient, R
thVJ鈥揅
. . . . . . . . . . . . . . . . . . . . . . . . . . . 40K/W
Thermal Resistance, Virtual Junction鈥搕o鈥揅ase, R
thVJ鈥揂
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4K/W
Short鈥揅ircuit Time (Note 3), t
sc
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Hour
Note 1. A flyback supply voltage of > 50V up to 60V is allowed in application. A 22鈥搉F capacititor
in series with a 22鈩?resistor (depending on I
O
and the inductance of the coil) has to be con-
nected between Pin7 and GND. The decoupling capacitor of V
FB
has to be connected be-
tween Pin6 and Pin3. This supply voltage line must have a resistance of 33鈩?
Note 2. I
O
maximum determined by current protection.
Note 3. Up to V
P
= 18V.
1
2
3
4
