STV9302 [STMICROELECTRONICS]
VERTICAL DEFLECTION OUTPUT FOR MONITOR / TV 2 App / 60 V WITH FLYBACK GENERATOR; 垂直偏转输出监视器/电视2应用/ 60 V用回扫发生器
| 型号： | STV9302 |
| 厂家： | 
ST |
| 描述： | VERTICAL DEFLECTION OUTPUT FOR MONITOR / TV 2 App / 60 V WITH FLYBACK GENERATOR |
| 文件： | 总15页 (文件大小：329K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
®
STV9302A
Vertical Deflection Booster
for 2-APPTV/Monitor Applications with 70-V Flyback Generator
Main Features
■ Power Amplifier
HEPTAWATT
(Plastic Package)
ORDER CODE: STV9302A
■ 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.
Input (Non Inverting)
Output Stage Supply
Output
Ground Or Negative Supply
Flyback Generator
Supply Voltage
7
6
5
4
3
2
1
This device, supplied with up to 35 V, provides up to
2 App output current to drive the vertical deflection
yoke.
Input (Inverting)
The internal flyback generator delivers flyback
voltages up to 70 V.
Tab connected
to pin 4
in double-supply applications, a stand-by state will
be reached by stopping the (+) supply alone.
Output Stage
Supply
Flyback
Generator Voltage
Supply
3
2
6
Flyback
Generator
Non-Inverting
7
+
Input
Power
5
Output
Amplifier
Inverting
-
1
Input
Thermal
Protection
STV9302A
4
Ground or Negative Supply
September 2003
1/15
Absolute Maximum Ratings
STV9302A
1
Absolute Maximum Ratings
Symbol
Voltage
Parameter
Value
Unit
VS
V5, V6
V3
Supply Voltage (pin 2) - Note 1 and Note 2
Flyback Peak Voltage - Note 2
40
70
V
V
V
Voltage at Pin 3 - Note 2, Note 3 and Note 6
Amplifier Input Voltage - Note 2, Note 6 and Note 7
-0.4 to (VS + 3)
V1, V7
- 0.4 to (VS + 2) or +40
V
Current
I0 (1)
I0 (2)
Output Peak Current at f = 50 to 200 Hz, t ≤ 10µs - Note 4
Output Peak Current non-repetitive - Note 5
Sink Current, t<1ms - Note 3
±5
±2
A
A
A
A
A
I3 Sink
I3 Source
I3
1.5
1.5
±5
Source Current, t < 1ms
Flyback pulse current at f=50 to 200 Hz, t≤10µs - Note 4
ESD Susceptibility
ESD1
ESD2
Human body model (100 pF discharged through 1.5 kΩ)
EIAJ Standard (200 pF discharged through 0 Ω)
2
kV
V
300
Temperature
Ts
Storage Temperature
Junction Temperature
-40 to 150
+150
°C
°C
Tj
Note:1. Usually the flyback voltage is slightly more than 2 x V . This must be taken into consideration when
S
setting V
S.
2. Versus pin 4
3. V3 is higher than V during the first half of the flyback pulse.
S
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 + 2 or 40 volts.
S
2
Thermal Data
Symbol
RthJC
TT
Parameter
Junction-to-Case Thermal Resistance
Temperature for Thermal Shutdown
Recommended Max. Junction Temperature
Value
3
Unit
°C/W
°C
150
120
TJ
°C
2/15
STV9302A
Electrical Characteristics
3
Electrical Characteristics
(V = 32 V, T
= 25°C, unless otherwise specified)
S
AMB
Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit Fig.
Supply
VS
Operating Supply Voltage Range (V2-V4)
Pin 2 Quiescent Current
Note 8
10
8
35
20
50
V
I2
I6
I3 = 0, I5 = 0
5
mA
mA
1
1
Pin 6 Quiescent Current
I3 = 0, I5 = 0, V6 =35v
19
Input
I1
Input Bias Current
V1 = 1 V, V7 = 2.2 V
V1 = 2.2 V, V7 = 1 V
- 0.6
- 0.6
-1.5
-1.5
µA
µA
1
I7
Input Bias Current
VIR
VI0
Operating Input Voltage Range
Offset Voltage
0
VS - 2
V
2
mV
µV/°C
∆VI0/dt Offset Drift versus Temperature
10
Output
I0
V5L
Operating Peak Output Current
Output Saturation Voltage to pin 4
Output Saturation Voltage to pin 6
±1
1.7
2.3
A
V
V
I5 = 1 A
I5 = -1 A
1
3
2
V5H
1.8
Stand-by
V1 = V7 = VS = 0
See Note 9
V5STBY
VS - 2
Output Voltage in Stand-by
V
Miscellaneous
G
Voltage Gain
80
dB
V
VD5-6
Diode Forward Voltage Between pins 5-6
Diode Forward Voltage between pins 3-2
Saturation Voltage on pin 3
I5 = 1 A
1.4
1.3
0.4
2.1
2
2
1
VD3-2
V3SL
V3SH
I3 = 1 A
V
V
V
I3 = 20 mA
I3 = -1 A
3
Saturation Voltage to pin 2 (2nd part of flyback)
8. In normal applications, the peak flyback voltage is slightly greater than 2 x (V - V ). Therefore, (V
S
4
S
- V ) = 35 V is not allowed without special circuitry.
4
9. Refer to Figure 4, Stand-by condition.
3/15
Electrical Characteristics
STV9302A
Figure 1: Measurement of I1, I2 and I6
+Vs
I2
I6
6
2
5
1
7
2.2V
39kΩ
(a)
STV9302A
S
(b)
4
I1
5.6kΩ
(a): I2 and I6 measurement
(b): I1 measurement
1V
Figure 2: Measurement of V5H
+Vs
6
2
V
5H
7
1
2.2V
5
STV9302A
- I5
1V
4
Figure 3: Measurement of V3L and V5L
+Vs
I3 or I5
(a)
6
2
7
1
(b)
3
5
1V
STV9302A
V
3L
V
5L
2.2V
4
(a): V measurement
5L
(b): V measurement
3L
4/15
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 (V and -V ) are required.
S
EE
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.
Figure 4: DC-coupled Application
+Vs
Output
Voltage
CF (47 to 100µF)
3
470µF
Vref
0.1µF
6
2
Output
Current
Flyback
Generator
Ip
Power
Amplifier
Vertical Position
Adjustment
7
+
5
1
-
Thermal
Safety
Yoke
Ly
R3
1.5Ω
Rd(*)
VM
Vm
4
-VEE
0.1µF
470µF
R2
R1
Ly
50µs
Ly
20µs
(*) recommended:
------------- < R d < -------------
4.1.1 Application Hints
For calculations, treat the IC as an op-amp, where the feedback loop maintains V = V .
1
7
5/15
Application Hints
4.1.1.1 Centering
STV9302A
Display will be centered (null mean current in yoke) when voltage on pin 7 is (R is negligible):
1
V
+ V
R
ꢀ
ꢀ
ÿ
ꢀ
2
M
m
------------------------
---------------------
ꢀ
V
=
×
7
2
R + R
þ
3
2
4.1.1.2 Peak Current
(V – V
)
R
M
m
2
I
=
×
---------------------------- ------------------
P
2
R xR
1
3
Example: for V = 2 V, V = 5 V and I = 1 A
m
M
P
Choose R in the1 Ω range, for instance R =1 Ω
1
1
2 × I × R
R
P
1
2
2
3
From equation of peak current:
-----------------------------
------- =
= --
V
– V
R
3
M
m
Then choose R or R . For instance, if R = 10 kΩ, then R = 15 kΩ
2
3
2
3
Finally, the bias voltage on pin 7 should be:
+ V
V
M
m
1
R
7
2
1
2.5
V
=
×
=
×
= 1.4V
------------------------ ----------------- -- -------
7
2
3
1 + -------
R
2
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 (R / R ) = (R / R ), and connect the bias filtering
8
7
3
2
capacitor between the intermediate point and the local driver ground. Of course, R should be
7
connected to the booster reference point, which is the ground side of R .
1
Figure 5: Ripple Rejection
3
2
6
Flyback
Generator
Reference
Voltage
Power
Amplifier
7
+
R9
R8
5
R7
1
-
Thermal
Safety
Yoke
Ly
Rd
4
Ramp
Signal
R3
R2
R1
Driver
Ground
Source of Ripple
6/15
STV9302A
Application Hints
4.2
AC-Coupled Applications
In AC-coupled applications (See Figure 6), only one supply (V ) is needed. The vertical position of
S
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).
Figure 6: AC-coupled Application
+Vs
Output
Voltage
CF (47 to 100µF)
3
470µF
0.1µF
6
2
Output
Current
Flyback
Generator
Ip
Power
Amplifier
7
1
+
5
-
Yoke
Ly
Thermal
Safety
R3
1.5Ω
Rd(*)
VM
Vm
4
R5
R4
Cs
CL
R1
Ly
50µs
Ly
20µs
R2
(*) recommended:
------------- < R d < -------------
4.2.1 Application Hints
Gain is defined as in the previous case:
V
– V
R
M
m
2
----------------------- ---------------------
I
=
×
p
2
R × R
1
3
Choose R then either R or R . For good output centering, V must fulfill the following equation:
1
2
3
7
V
V
+ V
S
M
m
V –
------- – V
------------------------
V
7
7
2
2
7
--------------------- = -------------------------------------- + -------
R + R
4
R
R
5
3
2
or
V
V
+ V
ꢀ
ꢀ
ÿ
ꢀ
m
1
R
2
S
M
1
1
ꢀ
ÿ
ꢀ
þ
V ×
+ ------- +
=
------------------------------ + ------------------------
-------
R
---------------------
R + R
ꢀ
7
2(R + R )
2 × R
þ
3
4
5
3
4
5
7/15
Application Hints
STV9302A
C performs an integration of the parabolic signal on C , therefore the amount of S correction is set
S
L
by the combination of C and C .
L
s
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.
Figure 7: Using a Differential-output Driver
+Vs
Output
Voltage
C (47 to 100µF)
F
470µF
0.1µF
6
3
2
Output
Current
Differential output
driver IC
Flyback
Generator
I
p
Power
Amplifier
i
p
+
7
+
i
i
cm
cm
5
R
7
1
-
Thermal
Safety
Yoke
Ly
1.5Ω
Rd(*)
-i
p
-
4
-V
EE
0.1µF
470µF
R
2
R
1
Ly
50µs
Ly
20µs
(*) recommended:
------------- < Rd < -------------
Let us set some definitions:
● i is the common-mode current:
1
2
i
= --(i + i )
cm
cm
+
-
● at peak of signal, i = i
+ i and i = i
- i , therefore the peak differential signal is i - (-
p p
+
cm
p
−
cm
i ) = 2 i , and the peak-peak differential signal, 4i .
p
p
p
The application is described in Figure 7 with DC yoke coupling. The calculations still rely on the fact
that V remains equal to V .
1
7
8/15
STV9302A
Application Hints
4.3.1 Centring
When idle, both driver outputs provide i and the yoke current should be null (R is negligible),
cm
1
hence:
i
R
= i
R
therefore R = R
cm
7
cm
2
7
2
4.3.2 Peak Current
Scanning current should be I when positive and negative driver outputs provide respectively
P
i
- i and i + i , therefore
p cm p
cm
I
2R
and since R = R :
7
2
(i
– i) R = I R + (i
+ i) R
p
i
7
cm
7
p
1
cm
2
---- = –
----------
R
1
Choose R in the 1Ω range, the value of R = R follows. Remember that i is one-quarter of driver
1
2
7
peak-peak differential signal! Also check that the voltages on the driver outputs remain inside
allowed range.
● Example: for i = 0.4mA, i = 0.2mA (corresponding to 0.8mA of peak-peak differential
cm
current), I = 1A
p
Choose R = 0.75Ω, it follows R = R = 1.875kΩ.
1
2
7
4.3.3 Ripple Rejection
Make sure to connect R directly to the ground side of R .
7
1
4.3.4 Secondary Breakdown Diagrams
Figure 8: Output Transistor Safe Operating Area (SOA) for Secondary Breakdown
@ Tcase=25°C
10
100µs
10ms
1
100ms
0.1
0.01
10
35
60
100
Volts
The diagram has been arbitrarily limited to max VS (35 V) and max I0 (2 A).
9/15
Mounting Instructions
STV9302A
Figure 9: Secondary Breakdown Temperature Derating Curve (ISB = Secondary Breakdown Current)
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 10: Mounting Examples
10/15
STV9302A
Pin Configuration
6
Pin Configuration
Figure 11: Pins 1 and 7
2
7
1
Figure 12: Pin 3 & Pins 5 and 6
6
2
2
5
3
4
11/15
Package Mechanical Data
STV9302A
7
Package Mechanical Data
Figure 13: 7-pin Heptawatt Package
L
E
L1
M1
A
M
D
C
D1
H2
L2
L3
F
L5
E1
E
V4
L9
H3
G
G1 G2
Dia.
F
L10
L4
H2
L11
L7
L6
Table 1: Heptawatt Package
Max.
mm
inches
Typ.
Dim.
Min.
Typ.
Min.
Max.
A
C
4.8
0.189
0.054
0.110
0.053
0.022
0.038
0.031
0.105
0.205
0.307
0.409
0.409
0.673
1.37
D
2.40
1.20
0.35
0.70
0.60
2.34
4.88
7.42
2.80
1.35
0.55
0.97
0.80
2.74
5.28
7.82
10.40
10.40
17.10
0.094
0.047
0.014
0.028
0.024
0.095
0.193
0.295
D1
E
E1
F
G
2.54
5.08
7.62
0.100
0.200
0.300
G1
G2
H2
H3
L
10.05
16.70
0.396
0.657
16.90
0.668
12/15
STV9302A
Package Mechanical Data
Table 1: Heptawatt Package (Continued)
mm
inches
Dim.
Min.
Typ.
Max.
Min.
Typ.
Max.
L1
L2
14.92
21.54
22.52
0.587
0.848
0.891
21.24
22.27
21.84
22.77
1.29
0.386
0.877
0.860
0.896
0.051
0.118
0.622
0.260
L3
L4
L5
2.60
15.10
6.00
2.80
15.50
6.35
3.00
0.102
0.594
0.110
0.610
0.250
0.008
L6
15.80
6.60
L7
0.0236
L9
0.20
L10
L11
M
2.10
4.30
2.55
4.83
2.70
4.80
3.05
5.33
0.082
0.169
0.100
0.190
0.106
0.190
0.120
0.210
2.80
5.08
0.110
0.200
M1
V4
Dia.
40 (Typ.)
3.65
3.85
0.144
0.152
13/15
Revision History
STV9302A
8
Revision History
Table 2: Summary of Modifications
Description
Version
Date
2.0
2.1
2.2
January 2002
November 2002
April 2003
First Issue.
Addition of Stand-by Control information, Section 8: Revision History.
Correction to Section 4.1.1.2: Peak Current. Creation of new title, Section
4.3.4: Secondary Breakdown Diagrams.
14/15
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.
The ST logo is a registered trademark of STMicroelectronics
© 2003 STMicroelectronics - All Rights Reserved
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15/15
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