October 2003 1/7
TDA8172
TV VERTICAL DEFLECTION OUTPUT CIRCUIT
FEATURES
■Pow er Amp lifier
■Flyback Generator
■Therm al Pro tection
DESCRIPTION
The TDA8172 is a monolithic integrated circuit in
HeptawattTM package. It is a high efficiency power
booster for direct driving of vertical windings of TV
yokes. It is intended for use in color and black &
white television as well as in monitors and
displays.
PIN CONNECTION (top view)
BLOCK DIAGRAM
HEPTAWATT
(Plastic Packag e)
ORDER CODE: TDA8172
1
TDA8172
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1 ABSOLUTE M AXIMUM RATINGS
Note 1:This occurs during the first part of flyback pulse
2 THERMAL DATA
3 ELECTRICAL CHARACTERISTICS
(refer to the test circuits, VS = 35V, Tamb = 25°C unless otherwise specifi ed)
Symbol Parameter Value Unit
VSSupply Voltage (pin 2) 35 V
V5, V6Flyback Peak Voltage 60 V
V3Voltage at Pin 3 (see Note 1) VS + 3 V
V1, V7Amplifier Input Voltage VS - 0.5 V
I0Output Peak Current (non repetitive, t = 2ms) 2.5 A
I0Output Peak Current at f = 50 to 200 Hz, t ≤ 10µs ±5 A
I0Output Peak Current at f = 50 to 200 Hz, t > 10µs 2 A
I3Pin 3 DC Current at V5 < V2100 mA
I3Pin 3 Flyback Current at f = 50 to 200 Hz, tfly ≤ 1.5ms ±1.5 A
I3Pin 3 Sink Current at f = 50 to 200 Hz, t ≤ 10µs 5 A
Ptot Total Power Dissipation at Tcase = 90 °C 20 W
Tstg, TjStorage and Junction Temperature -40, +150 °C
Symbol Parameter Value Unit
Rth(j-c) Thermal Resistance Junction-case 3 °C/W
Symbol Parameter Test Conditions Min. Typ. Max. Unit Fig.
I2Pin 2 Quiescent Current I3 = 0, I5 = 0 816mA1
I
6Pin 6 Quiescent Current I3 = 0, I5 = 0 16 36 mA 1
I1Amplifier Input Bias Current V1 = 1 V, V7 = 2 V - 0.1 - 1 µA1
V1 = 2 V, V7 = 1 V - 0.1 - 1 µA1
V3L Pin 3 Saturation Voltage to GND I3 = 20 mA 1 1.5 V 3
V5Quiescent Output Voltage VS = 35V, Ra = 39 kΩ18 V 4
V5L Output Saturation Voltage to GND I5 = 1.2 A 11.4V3
I
5 = 0.7 A 0.7 1 V 3
V5H Output Saturation Voltage to Supply - I5 = 1.2 A 1.6 2.2 V 2
- I5 = 0.7 A 1.3 1.8 V 2
TjJunction Temperature for Thermal Shutdown 140 °C
1
TDA8172
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Figure 1. Measurement of I1, I2, I6
S1: (a) I2 and I6 ; (b) I1
Figu re 2. Measur em e nt of V 5H
Figure 3. Measurement of V3L, V 5L
S: (a) V3L ; (b) V 5L
Figu re 4. Measur em e nt of V 5
I2I6
+VS
10kΩ
a
b
S
1V
I1
V7
74
5
6
2
1
TDA8172
+VS
V5H
1V
V7-I5
1
26
5
4
7
TDA8172
+VS
I3 or I5
S1 a
b
V5L
V3L
V7
26
3
5
4
7
1TDA8172
TDA8172
12kΩ
2V
+VS
V5
Ra
V7
12kΩ
5.6kΩ
1
26
5
4
7
TDA8172
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Figure 5. AC t est circui t
t
o
Ly
*
R
eco
mm
ended for V filtering
REF
TDA8172
V
S
C1
0.1
µ
FC2
470
µ
FD1
1N4001
C3
220
µ
F
2
63
5
7
1
4
V
REF
R1
10k
Ω
RT1 4.7k
Ω
Vi
GND
t
0
IN
R2
5.6k
Ω
R3
12k
Ω
C6
4.7
µ
FR4
8.2k
Ω
C5
2200
µ
F
R5Ly
t
0
R5
8.2
Ω
Ry
9.6
Ω
330
Ω
R6
1.5
Ω
R7
C4
0.22
µ
FLy
24.6mH
V
7
t
fly
TDA8172
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4 MOUNTING INSTRUCTIONS
The power dissipated in the circuit is rem oved by adding an ex ternal h eatsink. With the HEPTAWATT ™
package, the heatsink is simply attached with a s crew or a compression spring (clip).
A layer of silicon grease inserted bet ween heatsink and package optimizes therm al contact ; no electrical
isolation is needed between the two surfaces since the tab is c onn ec ted to Pin 4 which is ground.
Figure 6. Mounting exam p les
TDA8172
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5 PACKAGE MECHANICAL DATA
9 PINS - plastic hept awatt
Dimensions Millimeters Inches
Min. Typ. Max. Min. Typ. Max.
A 4.8 0.189
C 1.37 0.054
D 2.4 2.8 0.094 0.110
D1 1.2 1.35 0.047 0.053
E 0.35 0.55 0.014 0.022
F 0.6 0.8 0.024 0.031
F1 0.9 0.035
G 2.41 2.54 2.67 0.095 0.100 0.105
G1 4.91 5.08 5.21 0.193 0.200 0.205
G2 7.49 7.62 7.8 0.295 0.300 0.307
H2 10.4 0.409
H3 10.05 10.4 0.396 0.409
L 16.97 0.668
L1 14.92 0.587
L2 21.54 0.848
L3 22.62 0.891
L5 2.6 3 0.102 0.118
L6 15.1 15.8 0.594 0.622
L7 6 6.6 0.236 0.260
M 2.8 0.110
M1 5.08 0.200
Dia. 3.65 3.85 0.144 0.152
A
C
L5
D1
L3
L2
D
MM1
E
L1
L
G2
G1
G
F
H2
F1
L6
L7
Dia.
H3
TDA8172
7/7
I
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for
the consequences of use of such information nor for any infringement of patents or other rights of third parties which may
result from its use. No license is granted by implication or otherwise under any patent or patent rights of
STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication
supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as
critical components in life support devices or systems without express written approval of STMicroelectronics.
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