ILA3654 반도체 회로 부품 판매점
VERTICAL DEFLECTION AND GUARD CIRCUIT
|
|
 Integral |
ILA3654,ILA3654Q
VERTICAL DEFLECTION AND GUARD CIRCUIT (110°)
GENERAL DESCRIPTION
The ILA3654 is a full performance vertical deflection output circuit for direct drive of the
deflection coils and can be used for a wide range of 90° and 110° deflection systems.
A guard circuit is provided which blanks the picture tube screen in the absence of
deflection current.
FEATURES
· Direct drive to the deflection coils
· 90° and 110° deflection system
· Internal blanking guard circuit
· Internal voltage stabilizer
QUICK REFERENCE DATA
Output voltage
Output current (peak-to-peak)
Supply voltage
Guard circuit output voltage
Operating ambient temperature range
Storage temperature
V5-2
I5(p-p)
V9-2
V7-2
Tamb
Tstg
max.
max.
max.
max.
60 V
3A
40 V
5,6 V
-25 to +60 °C
-55 to +150 °C
THERMAL RESISTANCE
From junction to mounting base Rth j-mb 3,5 to 4 K/W
BLOCK DIAGRAM.
.
Korzhenevskogo 12, Minsk, 220064, Republic of
Belarus
Fax: +375 (17) 278 28 22,
Phone: +375 (17) 278 07 11, 277 24 70, 277 24 61,
277 69 16
E-mail: [email protected]
URL: www.bms.by
ILA3654,ILA3654Q
FUNCTIONAL DESCRIPTION
Output stage and protection circuits
The output stage consists of two Darlington configurations in class B arrangement.
Each output transistor can deliver 1,5 A maximum and the VCEO is 60 V.
Protection of the output stage is such that the operation of the transistors remains well
within the SOAR area in all
circumstances at the output pin, (pin 5). This is obtained by the cooperation of the thermal
protection circuit, the
current-voltage detector and the short circuit protection.
Special measures in the internal circuit layout give the output transistors extra solidity.
The supply for the output stage is fed to pin 6 and the output stage ground is connected to
pin 4.
Driver and switching circuit
Pin 1 is the input for the driver of the output stage. The signal at pin 1 is also applied to pin
3 which is the input of a
switching circuit (pin 1 and 3 are connected via external resistors).
This switching circuit rapidly turns off the lower output stage when the flyback starts and it,
therefore, allows a quick start
of the flyback generator. The maximum required input signal for the maximum output
current peak-to-peak value of 3 A
is only 3 V, the sum of the currents in pins 1 and 3 is then maximum 1 mA.
Flyback generator
During scan, the capacitor between pins 6 and 8 is charged to a level which is dependent
on the value of the resistor at
pin 8 (see Fig.1).
When the flyback starts and the voltage at the output pin (pin 5) exceeds the supply
voltage, the flyback generator is activated.
The supply voltage is then connected in series, via pin 8, with the voltage across the
capacitor during the flyback period.
This implies that during scan the supply voltage can be reduced to the required scan
voltage plus saturation voltage of the output transistors.
The amplitude of the flyback voltage can be chosen by changing the value of the external
resistor at pin 8.
It should be noted that the application is chosen such that the lowest voltage at pin 8 is >
1,5 V, during normal operation.
Guard circuit
When there is no deflection current, for any reason, the voltage at pin 8 becomes less than
1 V, the guard circuit will
produce a d.c. voltage at pin 7. This voltage can be used to blank the picture tube, so that
the screen will not burn in.
Voltage stabilizer
The internal voltage stabilizer provides a stabilized supply of 6 V to drive the output stage,
so the drive current is not
affected by supply voltage variations.
Korzhenevskogo 12, Minsk, 220064, Republic of
Belarus
Fax: +375 (17) 278 28 22,
Phone: +375 (17) 278 07 11, 277 24 70, 277 24 61,
277 69 16
E-mail: [email protected]
URL: www.bms.by
|
PDF 파일 내의 페이지 : 총 3 페이지
제조업체: Integral
( integral )
ILA3654 data
데이터시트 다운로드 :
[ ILA3654.PDF ]
[ ILA3654 다른 제조사 검색 ]
국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
관련 데이터시트
ILA3654
Vertical Deflection and Guard Circuit - IK Semiconductor
ILA3654
VERTICAL DEFLECTION AND GUARD CIRCUIT - Integral
ILA3654A
VERTICAL DEFLECTION AND GUARD CIRCUIT - Integral
ILA3654AQ
VERTICAL DEFLECTION AND GUARD CIRCUIT - Integral
ILA3654Q
VERTICAL DEFLECTION AND GUARD CIRCUIT - Integral