ST STV9302A User manual

September 2003 1/15
®
STV9302A
Vertical Deflection Booster
for 2-APPTV/Monitor Applications with 70-V Flyback Generator
Main Features
■Power Amplifier
■Flyback Generator
■Output Current up to 2 App
■Thermal Protection
■Stand-by Control
Description
The STV9302A is a vertical deflection booster
designed for TV and monitor applications.
This device, supplied with up to 35 V, provides up to
2 App output current to drive the vertical deflection
yoke.
The internal flyback generator delivers flyback
voltages up to 70 V.
in double-supply applications, a stand-by state will
be reached by stopping the (+) supply alone.
HEPTAWATT
(Plastic Package)
ORDER CODE: STV9302A
7
6
5
4
3
2
1
Tab connected
Input (Non Inverting)
Output Stage Supply
Output
Ground Or Negative Supply
Flyback Generator
Supply Voltage
Input (Inverting)
to pin 4
1Thermal
Protection
6
4
3
5
STV9302A
+
-Power
Amplifier
7
2
Flyback
Generator
Inverting
Non-Inverting
Input
Input
Ground or Negative Supply
Output
Flyback
Generator
Output Stage Supply
Voltage
Supply

Absolute Maximum Ratings STV9302A
2/15
1 Absolute Maximum Ratings
Note:1. Usually the flyback voltage is slightly more than 2 x V
S
. This must be taken into consideration when
setting
V
S.
2. Versus pin 4
3. V3 is higher than V
S
during the first half of the flyback pulse.
4. Such repetitive output peak currents are usually observed just before and after the flyback pulse.
5. This non-repetitive output peak current can be observed, for example, during the Switch-On/Switch-
Off phases. This peak current is acceptable providing the SOA is respected (
Figure 8 and Figure 9 ).
6. All pins have a reverse diode towards pin 4, these diodes should never be forward-biased.
7. Input voltages must not exceed the lower value of either V
S
+ 2 or 40 volts.
2 Thermal Data
Symbol Parameter Value Unit
Voltage
VSSupply Voltage (pin 2) - Note 1 and Note 2 40 V
V5, V6Flyback Peak Voltage - Note 2 70 V
V3Voltage at Pin 3 - Note 2, Note 3 and Note 6 -0.4 to (VS+ 3) V
V1, V7Amplifier Input Voltage - Note 2, Note 6 and Note 7 - 0.4 to (VS+ 2) or +40 V
Current
I0 (1) Output Peak Current at f = 50 to 200 Hz, t ≤10µs - Note 4 ±5 A
I0 (2) Output Peak Current non-repetitive - Note 5 ±2 A
I3 Sink Sink Current, t<1ms - Note 3 1.5 A
I3Source Source Current, t <1ms 1.5 A
I3Flyback pulse current at f=50 to 200 Hz, t≤10µs - Note 4 ±5 A
ESD Susceptibility
ESD1 Human body model (100 pF discharged through 1.5 kΩ)2kV
ESD2 EIAJ Standard (200 pF discharged through 0 Ω) 300 V
Temperature
TsStorage Temperature -40 to 150 °C
TjJunction Temperature +150 °C
Symbol Parameter Value Unit
RthJC Junction-to-Case Thermal Resistance 3 °C/W
TTTemperature for Thermal Shutdown 150 °C
TJRecommended Max. Junction Temperature 120 °C

3/15
STV9302A Electrical Characteristics
3 Electrical Characteristics
(VS= 32 V, TAMB = 25°C, unless otherwise specified)
8. In normal applications, the peak flyback voltage is slightly greater than 2 x (V
S
- V
4
). Therefore, (V
S
- V
4
) = 35 V is not allowed without special circuitry.
9. Refer to
Figure 4 , Stand-by condition.
Symbol Parameter Test Conditions Min. Typ. Max. Unit Fig.
Supply
VSOperating Supply Voltage Range (V2-V4)Note 8 10 35 V
I2Pin 2 Quiescent Current I3 = 0, I5 = 0 5 20 mA 1
I6Pin 6 Quiescent Current I3 = 0, I5 = 0, V6 =35v 8 19 50 mA 1
Input
I1Input Bias Current V1 = 1 V, V7 = 2.2 V - 0.6 -1.5 µA1
I
7Input Bias Current V1 = 2.2 V, V7 = 1 V - 0.6 -1.5 µA
VIR Operating Input Voltage Range 0 VS- 2 V
VI0 Offset Voltage 2mV
∆V
I0/dt Offset Drift versus Temperature 10 µV/°C
Output
I0Operating Peak Output Current ±1 A
V5L Output Saturation Voltage to pin 4 I5= 1 A 1 1.7 V 3
V5H Output Saturation Voltage to pin 6 I5= -1 A 1.8 2.3 V 2
Stand-by
V5STBY Output Voltage in Stand-by V1= V7= VS= 0
See Note 9 VS- 2 V
Miscellaneous
G Voltage Gain 80 dB
VD5-6 Diode Forward Voltage Between pins 5-6 I5= 1 A 1.4 2 V
VD3-2 Diode Forward Voltage between pins 3-2 I3= 1 A 1.3 2 V
V3SL Saturation Voltage on pin 3 I3= 20 mA 0.4 1 V 3
V3SH Saturation Voltage to pin 2 (2nd part of flyback) I3= -1 A 2.1 V

Electrical Characteristics STV9302A
4/15
Figure 1: Measurement of I1, I2and I6
Figure 2: Measurement of V5H
Figure 3: Measurement of V3L and V5L
1V
(a)
39kΩ
5
1(b)
I1
(a): I2 and I6 measurement
(b): I1 measurement
S
+Vs
26
I2 I6
4
7
2.2V STV9302A
5.6kΩ
- I5
5
1V
7
2.2V
1
4
+Vs
26V5H
STV9302A
+Vs
I3 or I5
3
5
V5L
V3L
(a)(b)
(a): V5L measurement
(b): V3L measurement
STV9302A
1V 7
4
26
2.2V 1

5/15
STV9302A Application Hints
4 Application Hints
The yoke can be coupled either in AC or DC.
4.1 DC-coupled Application
When DC coupled (see Figure 4), the display vertical position can be adjusted with input bias. On
the other hand, 2 supply sources (VSand -VEE) are required.
A Stand-by state will be reached by switching OFF the positive supply alone. In this state, where
both inputs are the same voltage as pin 2 or higher, the output will sink negligible current from the
deviation coil.
4.1.1 Application Hints
For calculations, treat the IC as an op-amp, where the feedback loop maintains V1= V7.
Figure 4: DC-coupled Application
R3
+Vs
R2
R1
Rd(*) Yoke
Ly
Vertical Position
Adjustment
-VEE
Vref
(*) recommended: Ly
50µs
------------- R d Ly
20µs
-------------<<
0.1µF
0.1µF
CF(47 to 100µF)
Power
Amplifier
Flyback
Generator
Thermal
Safety
470µF
470µF
Output
Current
Output
Voltage
Ip
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00000000000000000
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00000000000000000
00000000000000000
7
32
5
6
1
4
V
M
V
m
+
-
0.22µF
1.5Ω

Application Hints STV9302A
6/15
4.1.1.1 Centering
Display will be centered (null mean current in yoke) when voltage on pin 7 is (R1is negligible):
4.1.1.2 Peak Current
Example: for Vm=2V,V
M = 5 V and IP=1A
Choose R1in the1 Ωrange, for instance R1=1 Ω
From equation of peak current:
Then choose R2or R3. For instance, if R2= 10 kΩ, then R3 = 15 kΩ
Finally, the bias voltage on pin 7 should be:
4.1.2 Ripple Rejection
When both ramp signal and bias are provided by the same driver IC, you can gain natural rejection
of any ripple caused by a voltage drop in the ground (see Figure 5), if you manage to apply the
same fraction of ripple voltage to both booster inputs. For that purpose, arrange an intermediate
point in the bias resistor bridge, such that (R8/ R7) = (R3/ R2), and connect the bias filtering
capacitor between the intermediate point and the local driver ground. Of course, R7should be
connected to the booster reference point, which is the ground side of R1.
Figure 5: Ripple Rejection
V7VMVm
+
2
------------------------ R2
R2R3 +
----------------------
ÿþ


×=
I
P
V
M
V
m
–()
2
----------------------------- R2
R1xR3
-------------------
×=
R2
R3
------- 2I
PR 1
××
V
MV m
–
----------------------------- 2
3
---==
V7VMVm
+
2
------------------------ 1
1R3
R2
-------+
-----------------
×7
2
--- 1
2.5
--------
×1.4V===
R
3
R
2
R
1
Rd Yoke
Ly
Power
Amplifier
Flyback
Generator
Thermal
Safety
0000000000000000
0000000000000000
7
32
5
6
1
4
+
-
0000000000000000
0000000000000000
R
7
R
8
R
9
000000
000000
000000
Reference
Voltage
Ramp
Signal
Driver
Ground Source of Ripple

7/15
STV9302A Application Hints
4.2 AC-Coupled Applications
In AC-coupled applications (See Figure 6), only one supply (VS) is needed. The vertical position of
the scanning cannot be adjusted with input bias (for that purpose, usually some current is injected
or sunk with a resistor in the low side of the yoke).
4.2.1 Application Hints
Gain is defined as in the previous case:
Choose R1then either R2or R3. For good output centering, V7must fulfill the following equation:
or
Figure 6: AC-coupled Application
R3
+Vs
R2R1
Rd(*) Yoke
Ly
(*) recommended:
Ly
50µs
------------- R d Ly
20µs
-------------<<
0.1µF CF (47 to 100µF)
Power
Amplifier
Flyback
Generator
Thermal
Safety
470µF
Output
Current
Output
Voltage
Ip
000000000000000000
000000000000000000
000000000000000000
000000000000000000
000000000000000000
000000000000000000
7
32
5
6
1
4
V
M
V
m
+
-
000000000000000000
00000000000000000
00000000000000000
000000000000000000
000000000000000000
C
s
R
4
000000000000000000
C
L
R
5
0.22µF
1.5Ω
IpVMVm
–
2
------------------------ R2
R1R3 ×
----------------------
×=
VS
2
--------V
7
–
R
4R 5
+
---------------------- V7VMVm
+
2
------------------------
–
R3
-------------------------------------- V7
R2
-------+=
V71
R3
-------
ÿ
1
R2
-------+×1
R4R5 +
---------------------- þ
VS
2R
4R 5
+()
------------------------------ VMVm
+
2R
3
×
------------------------+
ÿþ


=+

Application Hints STV9302A
8/15
CSperforms an integration of the parabolic signal on CL, therefore the amount of S correction is set
by the combination of CLand Cs.
4.3 Application with Differential-output Drivers
Certain driver ICs provide the ramp signal in differential form, as two current sources i+and i−with
opposite variations.
Let us set some definitions:
●icm is the common-mode current:
●at peak of signal, i+=i
cm +i p
and i−=i
cm -i p
, therefore the peak differential signal is ip-(-
i
p
)=2i
p
, and the peak-peak differential signal, 4ip.
The application is described in Figure 7 with DC yoke coupling. The calculations still rely on the fact
that V1remains equal to V7.
Figure 7: Using a Differential-output Driver
+Vs
R2
R1
Rd(*) Yoke
Ly
-VEE
0.22µF
(*) recommended:
Ly
50µs
--------------Rd Ly
20µs
--------------<<
0.1µF
0.1µF
CF (47 to 100µF)
Power
Amplifier
Flyback
Generator
Thermal
Safety
+
-
470µF
470µF
Output
Current
Output
Voltage
Ip
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000000000000000000
000000000000000000
000000000000000000
00000000000000000
00000000000000000
00000000000000000
00000000000000000
00000000000000000
00000000000000000
7
32
5
6
1
4
R
7
00000000000000000
00000000000000000
+
-
Differential output
driver IC
ip
icm
-ip
icm
1.5Ω
icm 1
2
---i
+i -
+()=

9/15
STV9302A Application Hints
4.3.1 Centring
When idle, both driver outputs provide icm and the yoke current should be null (R1is negligible),
hence:
4.3.2 Peak Current
Scanning current should be IPwhen positive and negative driver outputs provide respectively
icm -i
p and icm +i p
, therefore
and since R7= R2:
Choose R1in the 1Ωrange, the value of R2= R7follows. Remember that i is one-quarter of driver
peak-peak differential signal! Also check that the voltages on the driver outputs remain inside
allowed range.
●Example: for icm = 0.4mA, i = 0.2mA (corresponding to 0.8mA of peak-peak differential
current), Ip=1A
Choose R1= 0.75Ω, it follows R2= R7= 1.875kΩ.
4.3.3 Ripple Rejection
Make sure to connect R7directly to the ground side of R1.
4.3.4 Secondary Breakdown Diagrams
The diagram has been arbitrarily limited to max VS (35 V) and max I0 (2 A).
Figure 8: Output Transistor Safe Operating Area (SOA) for Secondary Breakdown
icm R7 ⋅icm R2therefore R7R2 =⋅=
icm i–()R
7
⋅I
p
R
1
⋅i
cm i+()R 2
⋅+= I
p
i
----- 2R7
R1
-----------
–=
100µs
10ms
100ms
0.01
0.1
1
10
10 60 100
Volts
Ic(A)
@ Tcase=25°C
35

Mounting Instructions STV9302A
10/15
5 Mounting Instructions
The power dissipated in the circuit is removed by adding an external heatsink. With the
HEPTAWATT™ package, the heatsink is simply attached with a screw or a compression spring
(clip).
A layer of silicon grease inserted between heatsink and package optimizes thermal contact. In DC-
coupled applications we recommend to use a silicone tape between the device tab and the heatsink
to electrically isolate the tab.
Figure 9: Secondary Breakdown Temperature Derating Curve (ISB = Secondary Breakdown Current)
Figure 10: Mounting Examples

11/15
STV9302A Pin Configuration
6 Pin Configuration
Figure 11: Pins 1 and 7
Figure 12: Pin 3 & Pins 5 and 6
17
2
3
26
5
4
2

Package Mechanical Data STV9302A
12/15
7 Package Mechanical Data
Figure 13: 7-pin Heptawatt Package
Table 1: Heptawatt Package
Dim. mm inches
Min. Typ. Max. Min. Typ. Max.
A4.8 0.189
C1.37 0.054
D2.40 2.80 0.094 0.110
D1 1.20 1.35 0.047 0.053
E0.35 0.55 0.014 0.022
E1 0.70 0.97 0.028 0.038
F0.60 0.80 0.024 0.031
G2.34 2.54 2.74 0.095 0.100 0.105
G1 4.88 5.08 5.28 0.193 0.200 0.205
G2 7.42 7.62 7.82 0.295 0.300 0.307
H2 10.40 0.409
H3 10.05 10.40 0.396 0.409
L16.70 16.90 17.10 0.657 0.668 0.673
A
L
L1
CD1
L5
L2
L3
D
E
M1
M
H3
Dia.
L7
L11
L10
L6
H2 F
GG1
G2
E1 F
E
L9 V4
L4
H2

13/15
STV9302A Package Mechanical Data
L1 14.92 0.587
L2 21.24 21.54 21.84 0.386 0.848 0.860
L3 22.27 22.52 22.77 0.877 0.891 0.896
L4 1.29 0.051
L5 2.60 2.80 3.00 0.102 0.110 0.118
L6 15.10 15.50 15.80 0.594 0.610 0.622
L7 6.00 6.35 6.60 0.0236 0.250 0.260
L9 0.20 0.008
L10 2.10 2.70 0.082 0.106
L11 4.30 4.80 0.169 0.190
M2.55 2.80 3.05 0.100 0.110 0.120
M1 4.83 5.08 5.33 0.190 0.200 0.210
V4 40 (Typ.)
Dia. 3.65 3.85 0.144 0.152
Table 1: Heptawatt Package (Continued)
Dim. mm inches
Min. Typ. Max. Min. Typ. Max.

Revision History STV9302A
14/15
8 Revision History
Table 2: Summary of Modifications
Version Date Description
2.0 January 2002 First Issue.
2.1 November 2002 Addition of Stand-by Control information, Section 8: Revision History.
2.2 April 2003 Correction to Section 4.1.1.2: Peak Current. Creation of new title, Section
4.3.4: Secondary Breakdown Diagrams.

15/15
STV9302A
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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