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STV9302
VERTICAL DEFLECTION OUTPUT FOR MONITOR / TV 2 App / 60 V WITH FLYBACK GENERATOR
FEATURES * Power Amplifier * Flyback Generator * Output Current up to 2 App * Thermal Protection DESCRIPTION The STV9302 is a vertical deflection booster designed for monitor and TV applications. This device, supplied with up to 32 V, provides up to 2 App output current to drive the vertical deflection yoke. The internal flyback generator delivers flyback voltages up to 60 V. PIN CONNECTION (top view)
7 6 5 .com 4 3 2 1 Input (non inverting) Output stage supply Output Ground or negative supply Flyback generator Supply voltage Input (inverting)
HEPTAWATT (Plastic Package) ORDER CODE: STV9302
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Tab connected to pin 4
BLOCK DIAGRAM Output stage Flyback Supply supply generator voltage
6 3 2
Non-Inverting Input Inverting Input
Flyback Generator 7
+
Power Amplifier 5
Output
1
Thermal Protection
STV9302
4
Ground or Negative supply Version 2.5
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STV9302
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ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
VOLTAGE VS V5, V6 V3 V1, V7 CURRENT I0 (1) I0 (2) I3 sink I3 source I3 Output Peak Current at f = 50 to 200 Hz, t 10s - Note 4 Output Peak Current non-repetitive - Note 5 Sink Current, t<1ms - Note 3 Source Current, t < 1ms Flyback pulse current at f=50 to 200 Hz, t10s - Note 4 5 2 1.5 1.5 5 A A A A A Supply Voltage (pin 2) - Note 1 and Note 2 Flyback Peak Voltage - Note 2 Voltage at Pin 3 - Note 2, Note 3 and Note 6 Amplifier Input Voltage - Note 6 35 60 -0.4 to (VS + 3) - 0.4 to +VS V V V V
ESD SUSCEPTIBILITY ESD1 Human body model (100pF discharge through 1.5k) EIAJ norm (200pF discharge through 0) 2 300 kV V
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ESD2 TEMPERATURE To Ts Tj
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Operating ambient temperature Storage Temperature Junction temperature
-20 to 75 -40 to 150 +150
C C C
Note 1: Usually, the flyback voltage is close to 2.VS This must be taken into consideration when setting VS. Note 2: Versus pin 4 Note 3: V3 is higher than VS during the first half of the flyback pulse Note 4: This repetitive output peak current is usually observed just before and after the flyback pulse. Note 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 ) Note 6: All pins have a reverse diode towards pin 4, these diodes should never be forward-biased
2
THERMAL DATA
Symbol Rth(j-c) Tt Tjr Parameter Thermal Resistance Junction-case Temperature for thermal shutdown Recommended Max. junction temperature Value 3 150 120 Unit C/W C C
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STV9302
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ELECTRICAL CHARACTERISTICS
Parameter Test Conditions Min. Typ. Max. Unit Fig.
(VS = 35V, Tamb = 25C, unless otherwise specified)
Symbol SUPPLY Vs I2 I6 INPUT I1 I7 VI0 Input bias current Input bias current Offset voltage Offset drift versus temperature V1 = 1 V, V7 = 2.2 V V1 = 2.2 V, V7 = 1 V - 0.6 - 0.6 2 -10 -1.5 -1.5 Operating supply voltage range (V2-V4) Pin 2 quiescent current Pin 6 quiescent current Note 7 I3 = 0, I5 = 0 I3 = 0, I5 = 0, V6 =35v 8 10 5 19 30 20 50 V mA mA 1 1
A A
mV
1
VI0/dt
OUTPUT I0 V5L V5H
V/C
Operating peak output current Output saturation voltage to pin 4 Output saturation voltage to pin 6 I5= 1A I5=- 1A 1 1.6
1 1.4 2.2
A V V 3 2
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MISCELLANEOUS G VD5-6 VD3-2 V3SL V3SH Voltage gain
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80 I5= 1A I3= 1A I3= 20mA I3= -1A 1.4 1.3 0.4 2.1 2 2 1 dB V V V V 3
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Diode forward voltage between pins 5-6 Diode forward voltage between pins 3-2 Saturation voltage on pin 3 Saturation voltage to pin 2 (2nd part of flyback)
Note 7: When (V2-V4) = 30V, the flyback peak voltage on pin 5 is approximatively equal to 60 V.
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STV9302
Figure 1. Measurement of I1, I2, I6
+Vs I2 2
7
I6 6 5
2.2V
STV9302
S 1 4
10k (a) (b) I1 1V
(a) : I2 and I6 measurement (b) : I1 measurement
Figure 2. Measurement of V5H
+Vs
2
7
6 V5H
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2.2V
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STV9302
1 1V 4
5 - I5
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Figure 3. Measurement of V3L, V5L
+Vs 2
7
6 (b) 3
I3 or I5 (a)
1V
STV9302
5 1 2.2V 4 V3L V5L
(a) : V5L measurement (b) : V3L measurement
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STV9302
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 S and -VEE) are required. Figure 4. DC coupled application
+Vs 470F 0.1F CF (47 to 100F)
Output Voltage
Vref Vertical Position Adjustment
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VM Vm
R3
-VEE
4
470F
0.1F
R2
0.22F
(*) recommended:
Ly Ly ------------- < Rd < ------------50s 20s
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000000000000000000000000
000000000000000000000000 000000000000000000000000
000000000000000000000000 00000000000000000000000
7 +
6 Power Amplifier
3
2 Flyback Generator
Output Current Ip
000000000000000000000000 00000000000000000000000
5 1 Thermal Yoke Ly
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1.5
Rd(*)
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R1
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STV9302
Application hints
* For calculations, treat the IC as an op-amp, where the feedback loop maintains V1 = V7 :
Centring Display will be centred (null mean current in yoke) when voltage on pin 7 is:
V Peak current
V +V R M m 2 = ------------------------ x --------------------7 2 R +R y2 3 (V - V ) R M m 2 = ---------------------------- x ---------------P R xR 2 13
(R1 is negligible)
I
* Example: for Vm= 2 V, VM= 5 V and IP= 1 A
Choose R1 in the1 range, for instance R1=1 2 x IP x R1 R2 From equation of peak current: ------- = ---------------------------- = 2 - -V -V 3 R3 M m Then choose R2 or R3. For instance if R2 = 10 k then R3=15 k
* Finally, bias voltage on pin 7 should be:
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V
V +V M m 1 3.5 1 = ------------------------ x ----------------- = ------- x ------- = 0.7V 7 2 R 2 2.5 3 1 + ------R 2
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STV9302
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, R7 should be connected to the booster reference point, which is the ground side of R1. Figure 5. Ripple rejection
6 Reference voltage Power Amplifier 7 R9 R8 R7 1
3
2
Flyback Generator
+
5
4
Thermal Safety
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Ramp signal
Source of ripple
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Driver ground
000000 000 000000000000
00000000000000000000000
R3
Rd
Yoke Ly
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R2
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R1
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STV9302
4.2 AC-Coupled applications (See Figure 6)
In AC-coupled application, 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). Figure 6. AC-coupled application
470F
0.1F 6
CF (47 to 100F)
+Vs
Output Voltage
R5
Cs
(*) recommended:
Ly Ly ------------- < Rd < ------------50s 20s
R2 R1
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000000000000000000000000
00000000000000000000000
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Vm
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0.22F
VM
R3
00000000000000000000000000000000
000000000000000000000000
00000000 00000000
3 2 Flyback Generator Power Amplifier 7 + 5 1 Thermal Safety 1.5 Rd(*) Yoke Ly Output Current Ip
000000000000000
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R4
CL
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STV9302
Application hints
* Gain is defined as in the previous case:
V -V R M m 2 I p = ----------------------- x --------------------2 R xR 1 3
* Choose R1 then either R2 or R3 * For good output centering, V7 must fulfill the following equation:
V +V V M m S V - ------------------------ V ------- - V 7 7 2 7 2 --------------------- = ------------------------------------- + ------R +R R R 4 5 3 2 or V V +V 1 S M m 1 1 V x ------- + ------- + --------------------- = ------------------------------ + ------------------------ 7 yR R 2xR R +R y 2 ( R4 + R5 ) 2 3 3 4 5 CS performs an integration of the parabolic signal on CL, therefore the amount of S correction is set by the combination of CL and Cs. 4.3 Application with differential-output drivers
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Some driver ICs provide the ramp signal in differential form, as two current sources i+ and i- with opposite variations. .com Let us set some definitions : 1 cm = -- ( i + + i - ) 2 * at peak of signal, i+ = icm + ip and i- = icm - ip, therefore the peak differential signal is ip - (-ip) = 2 ip, and the peak-peak differential signal, 4ip.
* icm is the common-mode current : i
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The application is described in Figure 7 with DC yoke coupling. The calculations still rely on the fact that V1 remains equal to V7. Centring When idle, both driver outputs provide icm and the yoke current should be null, hence: i cm R 7 = i cm R 2 therefore R 7 = R 2 Peak current Scanning current should be Ip when positive and negative driver outputs provide respectively Ip 2R 7 ( i cm - i ) R 7 = I p R 1 + ( i cm + i ) R 2 ---- = - ---------and since R7 = R2 : i R1 Choose R1 in the 1 range, the value of R2 = R7 follows. Remember that i is one-quarter of driver peakpeak differential signal ! Also check that the voltages on the driver outputs remain inside allowed range. icm - ip and icm + ip, therefore (R1 is negligible)
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STV9302
Figure 7. Using a differential-output driver
+Vs 470F 0.1F CF (47 to 100F)
Output Voltage
Differential output driver IC Power Amplifier ip icm
+
R7 1
icm
-
-VEE
4
470F
0.1F R2
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(*) recommended:
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Ly Ly ------------- < Rd < ------------50s 20s
0.22F
-ip
* Example : for icm = 0.4mA, i = 0.2mA (corresponding to 0.8mA of peak-peak differential current),
Ip = 1A Choose R1 = 0.75, it follows R2 = R7 = 1.875k. Ripple rejection Make sure to connect R7 directly to the ground side of R1.
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0000000000000000
0000000000000000 0000000000000000
00000000000000000000000000000000 000000000000000000000000000000
7
6
3
2
Flyback Generator
Output Current Ip
+
5
-
00000000
Thermal Safety
1.5
Rd(*)
Yoke Ly
R1
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STV9302
Figure 8. Output transistor Safe Operating Area (SOA) for secondary breakdown @ Tcase=25C 10
1 100ms
10ms
100s
Ic(A)
0.1 0.01 10 35 60 100
Volts
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The diagram has been arbitrarily limited to max VS (35 V) and max I0 (2 A) Figure 9. Secondary breakdown temperature derating curve (ISB = secondary breakdown current)
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STV9302
5
MOUNTING INSTRUCTIONS
The power dissipated in the circuit is removed by adding an external heatsink. With the HEPTAWATTTM 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 DCcoupled applications we recommend to use a silicon tape between the device tab and the heatsink to isolate electrically the heatsink. Figure 10. Mounting examples
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STV9302
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PIN CONFIGURATION
Figure 11. Pins 1 and 7
2
1
7
Figure 12. Pin 3
2
Figure 13. Pins 5 and 6
6 2
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4
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STV9302
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PACKAGE MECHANICAL DATA
L
E
9 PINS - plastic heptawatt
L1
M1 A
C
D1
L2 L5 L3
D
G1
H3
Dia.
F
F1
L7 L6
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Dimensions A C D D1 E F F1 G G1 G2 H2 H3 L L1 L2 L3 L5 L6 L7 M M1 Dia.
Min.
2.4 1.2 0.35 0.6 2.41 4.91 7.49 10.05
2.6 15.1 6
3.65
Millimeters .com Typ. Max. 4.8 1.37 2.8 1.35 0.55 0.8 0.9 2.54 2.67 5.08 5.21 7.62 7.8 10.4 10.4 16.97 14.92 21.54 22.62 3 15.8 6.6 2.8 5.08 3.85
H2
Min.
Inches Typ.
G2
G
M
0.094 0.047 0.014 0.024 0.095 0.193 0.295 0.396 0.668 0.587 0.848 0.891 0.102 0.594 0.236 0.110 0.200 0.144 0.100 0.200 0.300
Max. 0.189 0.054 0.110 0.053 0.022 0.031 0.035 0.105 0.205 0.307 0.409 0.409
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0.118 0.622 0.260
0.152
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TDA9302
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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 the express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics 2003 STMicroelectronics - All Rights Reserved. Purchase of Components by STMicroelectronics conveys a license under the Philips I2C Patent. Rights to use these components in an I2C system is granted provided that the system conforms to the I2C Standard Specification as defined by Philips. STMicroelectronics Group of Companies Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. www.st.com I2C
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