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參數(shù)資料
| 型號(hào)： | STV7801 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | PLASMA DATA POWER SWITCH |
| 中文描述： | 等離子體數(shù)據(jù)電源開關(guān) |
| 文件頁數(shù)： | 5/18頁 |
| 文件大?。?/td> | 196K |
| 代理商： | STV7801 |
STV7801S
5/18
4 - CIRCUIT DESCRIPTION
STV7801 is a monolithic integrated circuit imple-
mented in ST Microelectronics BCD proprietary
technology designed as a switched power supply
generator for data drivers in a Plasma Display
Panel (P.D.P.) application.
The high load drive capability of STV7801 reduces
the number of devices necessary to drive a com-
plete PDP (4 to 6 devices for a 42" VGA 16/9 PDP
monitor).
STV7801 high current drive capability provides a
high power recovery efficiency coefficient superior
to 85% on constant capacitive load. The structure
of the output stage is implemented with 2 DMOS
transistors to minimise the die size. External com-
ponents like bootstrap capacitor can also be im-
plemented to increase the performances of the cir-
cuit.
STV7801 integrates level shifters driven with 5V
CMOS compatible levels. This feature reduces the
number of discrete components such as voltage
translators.
STV7801 integrates several protections like output
over-voltage, timing control and over-temperature
to increase the reliability of the system.
Over-voltage protection consists in clamping di-
odes connected between Vpp, Vssp and critical
nodes of the devices.
Timing control consists in a monitoring of the out-
put stage control signals to avoid any cross-con-
duction.
Over-temperature protection is activated when
junction temperature reaches the threshold values
fixed internally and sets the device in tri-state
mode.
STV7801 can drive several data drivers connected
to column electrodes of the panel. The maximum
amount of data drivers is given by the Power Re-
covery Current of the device and then the maxi-
mum rise/fall time of the signal. The rise and fall
time of the AC supply signal is adjusted by the val-
ue of the inductance connected to the panel ca-
pacitance through the data drivers. The amount of
STV7801 needed to generate the AC supply can
be reduced by increasing the rise/fall time of the
generated AC supply.
5 - CONTROL SIGNALS TRUTH TABLE
18
Vpp
Supply
High Voltage Supply
19
Vpp
Supply
High Voltage Supply
20
Vssub
Ground
Substrate Ground
Pin Number
Pin Name
Function
Description
HL-Tr
LH-Tr
L-Clmp
H-Clmp
Device Output
Comments
L
H
L
L
Low to High Transition
Power Saving Mode
H
L
L
L
High to Low Transition
Power Saving Mode
L
X
L
H
Vpp
Vssp
Power Supply Clamp
X
L
H
L
Power Ground Clamp
X
X
H
H
Tri-State
Protection Mode
X
H
H
X
Tri-State
Protection Mode
H
X
X
H
Tri-State
Protection Mode
L
L
L
L
Tri-State
Protection Mode
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| STV7801S | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:PLASMA DATA POWER SWITCH |
| STV7801SP | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:PLASMA DATA POWER SWITCH |
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| STV8.35F160Q | 制造商:CIT 制造商全稱:CIT Relay & Switch 功能描述:CIT SWITCH |
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