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參數(shù)資料
| 型號(hào)： | STSR2PMCD-TR |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | FORWARD SYNCHRONOUS RECTIFIERS SMART DRIVER |
| 中文描述： | 遠(yuǎn)期智能顯示驅(qū)動(dòng)同步整流器 |
| 文件頁(yè)數(shù)： | 1/12頁(yè) |
| 文件大?。?/td> | 296K |
| 代理商： | STSR2PMCD-TR |
1/12
September 2003
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SUPPLY VOLTAGE RANGE: 4.5V TO 5.5V
TYPICAL PEAK OUTPUT CURRENT:
SOURCE -2A, SINK 3.5A
OPERATING FREQUENCY: 20 TO 750 KHZ
SMART TURN-OFF ANTICIPATION TIMING
OPERATION INDEPENDENT FROM THE
FORWARD MAGNETIC RESET TECHNIQUE
POSSIBILITY TO OPERATE IN
DISCONTINUOUS MODE
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DESCRIPTION
STSR2P
complementary high current outputs to drive
Power Mosfets. The IC is dedicated to properly
drive
secondary
Synchronous
medium power, low output voltage, high efficiency
Forward Converters. From a synchronizing clock
input, STSR2P generates two driving signals with
the
self-setting
of
complementary pulses. The IC operation prevents
secondary
side
shoot-through
providing proper timing at the outputs turn-off
transition. This smart function operates through a
fast cycle-after-cycle control logic mechanism
based on an internal high frequency oscillator,
synchronized
by
the
Smart
Driver
IC
provides
two
Rectifiers
in
dead
time
between
conditions
clock
signal.
A
fixed
anticipation in turning-off the OUT
GATE1
with
respect to the clock signal transition is provided,
while the anticipation in turning off the OUT
GATE2
can be set through external components. The
adopted transitions revelation mechanism makes
circuit operation independent by the forward
magnetic reset technique used, avoiding most of
the common problems inherent in self-driven
synchronous rectifiers. A special Inhibit function
allows the shut-off of OUT
GATE2
. This feature
makes discontinuous conduction mode possible
and
prevents the
freewheeling
sinking current from the output.
STSR2P automatically turns off the outputs when
duty-cycle is lower than 13%, while STSR2PM
works even at very low duty-cycle values.
mosfet
from
STSR2P/
STSR2PM
FORWARD SYNCHRONOUS
RECTIFIERS SMART DRIVER
PEAK
DETECTOR
BIAS
UVLO
CK
Vcc
2
6
5.7V
8
4
OUTPUT
BUFFERS
7
OUTGate2
PWRGND
SGLGND
ANTICIPATION
SET
3
SETANT2
5
INHIBIT
25mV
-
+
DIGITAL
CONTROL
HIGH
FREQUENCY
OSCILLATOR
1
OUTGate1
+
+
+
SCHEMATIC DIAGRAM
SO-8
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| STSR3CD | 功能描述:DC/DC 開(kāi)關(guān)控制器 Smart Driver RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
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