POWER AMPLIFIER FLYBACK SUPPLY VOLTAGE SEPARATED THERMAL PROTECTION
DESCRIPTION Designed for monitors and high performance TVs, the TDA8179FS vertical deflection booster is able to work with a flyback voltage more than the double of VS. The TDA8179FS operates with supplies up to 42V, flyback output up to 92V and provides up to 2App output current to drive to yoke. The TDA8179FS is offered in HEPTAWATT package.
HEPTAWATT (Plastic Package) ORDER CODE : TDA8179FS
PIN CONNECTIONS
7 6 5 4 3 2 1
Non-inverting Input Output Stage Supply Output GND Flyback Supply Voltage Supply Voltage Inverting Input
8179F-01.EPS
Tab connected to pin 4
May 1993
1/6
TDA8179FS BLOCK DIAGRAM + VS
+ V FLYBACK
2
6
3
1 POWER AMPLIFIER
5
7 YOKE THERMAL PROTECTION
8179F-02.EPS
4
APPLICATION CIRCUIT + VS + VF
2
IN VREF
1
6
TDA8179FS
3
5
OUT
7 YOKE
8179F-03.EPS
4
Note : For values see ” Easy Design of Vertical Deflection Stages” (software available from our sales offices)
2/6
TDA8179FS ABSOLUTE MAXIMUM RATINGS Parameter
Value
Unit
VS
Supply Voltage (pin 2)
50
V
VF
Flyback Supply Voltage
100
V
VF - VS
Difference between Flyback Supply Voltage and Supply Voltage
50
V
V1 , V7
Amplifier Input Voltage
+ VS
Output Peak Current
A Non-repetitive, t = 2ms f = 50 or 60Hz, t ≤ 10µs f = 50 or 60Hz, t > 10µs
I3
2 2 1.8
Pin 3 Peak Flyback Current at f = 50 or 60Hz, tfly ≤ 1.5ms o
1.8
A
20
W
Ptot
Total Power Dissipation at TC = 70 C
Tstg
Storage Temperature
- 40, + 150
o
C
Tj
Junction Temperature
0, +150
o
C
8179F-01.TBL
IO
THERMAL DATA Symbol Rth (j-c)
Parameter
Value
Junction-case Thermal Resistance
Max.
Unit o
3
C/W
8179F-02.TBL
Symbol
ELECTRICAL CHARACTERISTICS (V7 = 2.2V, VS = 42V, TA = 25oC, unless otherwise specified) (refer to the test circuits - see Figure 1 next page) Parameter
Test Conditions
Min.
Typ.
10
Max.
Unit
VS
Operating Supply Voltage Range
42
V
I2
Pin 2 Quiescent Current
I3 = 0
I5 = 0
10
20
mA
I6
Pin 6 Quiescent Current
I3 = 0
I5 = 0
20
40
mA
I1
Amplifier Bias Current
V1 = 1V
- 0.2
-1
µA
V5
Quiescent Output Voltage 24.2 17.8
25 18.5
V VS = 42V VS = 35V
R a = 3.9kΩ R a = 5.6kΩ
23.4 17
V5L
Output Saturation Voltage to GND
I5 = 1A
1.2
1.5
V
V5H
Output Saturation Voltage to Supply
- I5 = 1A
2.2
2.6
V
VD5 - 6
Diode Forward Voltage between Pins 5-6
ID = 1A
1.5
3
V
VD3 - 6
Diode Forward Voltage between Pins 3-6
ID = 1A
1.5
3
V
R1
Input Resistance
200
kΩ
Tj
Junction Temperature for Thermal Shutdown
140
o
8179F-03.TBL
Symbol
C
3/6
TDA8179FS FIGURE 1 : DC Test Circuits Figure 1a : Measurement of I1, I2, I6
Figure 1b : Measurement of V5H + VS
I2
+ VS
I6
2
V5H
6
2
6
5
10k Ω
TDA8179FS
TDA8179FS
1 S1
5
a
1 b 7
4
7
I1
-I5
4
V7
V
1V
7
S1 : (a) I2 and I6, (b) I1
Figure 1c : Measurement of V5L
8179F-05.EPS
8179F-04.EPS
1V
Figure 1d : Measurement of V5 + VS
+ VS
I5 2
2
6
6
3
TDA8179FS
1
5
TDA8179FS
1
5
7
4 V5
7
V7
4
39k Ω
V5L V7
4/6
8179F-07.EPS
Re 8179F-06.EPS
3V
TDA8179FS Figure 2 : SOA of Each Output Power Transistor at TA = 25oC 10
I C (A)
Pulse Operation*
I C max. pulsed 2 1.2 1 I C max. continued
1ms 10ms DC Operation
-1
10
VCE (V)
8179F-08.EPS
* For single non repetitive pulse -2
10
1
10
2
10
5/6
TDA8179FS PACKAGE MECHANICAL DATA : HEPTAWATT E
L
D1
C
D
M
A
M1
L1
L2
G2
H3
G1
L3
G
L5
F
PM-HEPTV.EPS
L7
H2
F1
Dia.
L6
Min. A C D D1 E F F1 G G1 G2 H2 H3 L L1 L2 L3 L5 L6 L7 M M1 Dia.
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Purchase of I C Components of SGS-THOMSON Microelectronics, conveys a license under the Philips I2C Patent. Rights to use these components in a I2C system, is granted provided that the system conforms to the I2C Standard Specifications as defined by Philips. SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.
mA. I3. Pin 3 Peak to Peak Flyback Current for f = 50 Hz, tfly ⤠1.5 ms. 1.8. A. I8. Pin 8 Current. ± 20. mA. Ptot. Power Dissipation at Ttab = 90 °C at Tamb = 80 °C.
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