datasheet4u.com

900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




STMicroelectronics Electronic Components Datasheet

STSR2 Datasheet

FORWARD SYNCHRONOUS RECTIFIERS SMART DRIVER

No Preview Available !

STSR2 pdf
STSR2
FORWARD SYNCHRONOUS
RECTIFIERS SMART DRIVER
s SUPPLY VOLTAGE RANGE: 4.5V TO 5.5V
s TYPICAL PEAK OUTPUT CURRENT:
SOURCE -2A, SINK 3.5A
s OPERATING FREQUENCY: 20 TO 750 KHZ
s SMART TURN-OFF ANTICIPATION TIMING
s OPERATION INDEPENDENT FROM THE
FORWARD MAGNETIC RESET TECHNIQUE
s POSSIBILITY TO OPERATE IN
DISCONTINUOUS MODE
www.DataSheet4U.com
DESCRIPTION
STSR2 Smart Driver IC provides two
complementary high current outputs to drive
Power Mosfets. The IC is dedicated to properly
drive secondary Synchronous Rectifiers in
medium power, low output voltage, high efficiency
Forward Converters. From a synchronizing clock
input, STSR2 generates two driving signals with
the self-setting of dead time between
complementary pulses. The IC operation prevents
secondary side shoot-through conditions
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 clock signal. A fixed
anticipation in turning-off the OUTGATE1 with
respect to the clock signal transition is provided,
SCHEMATIC DIAGRAM
SO-8
while the anticipation in turning off the OUTGATE2
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 OUTGATE2. This feature
makes discontinuous conduction mode possible
and prevents the freewheeling mosfet from
sinking current from the output.
STSR2 automatically turns off the outputs when
duty-cycle is lower than 13%, while STSR2M
works even at very low duty-cycle values.
June 2003
CK 4
PEAK
DETECTOR
+
HIGH
FREQUENCY
OSCILLATOR
INHIBIT 5
-
+
25mV
Vcc
2
BIAS
UVLO
+
5.7V
ANTICIPATION
SET
+
DIGITAL OUTPUT
CONTROL BUFFERS
3 SETANT2
1 OUTGate1
7 OUTGate2
6
SGLGND
8
PWRGND
1/12


STMicroelectronics Electronic Components Datasheet

STSR2 Datasheet

FORWARD SYNCHRONOUS RECTIFIERS SMART DRIVER

No Preview Available !

STSR2 pdf
STSR2
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VCC DC Input Voltage
-0.3 to 6
V
VOUTGATE Max Gate Drive Output Voltage
-0.3 to VCC
V
VINHIBIT Max INHIBIT Voltage (*)
-0.6 to VCC
V
VCK Clock Input Voltage Range (*)
-0.3 to VCC
V
ILX Switching Peak Current
2A
PTOT Continuous Power Dissipation at TA=105°C without heatsink
270 mW
ESD Human Body Model
Pins 1,2, 4, 5, 6, 7, 8
±1
KV
Pin 3
±0.9
KV
Tstg Storage Temperature Range
-55 to +150
°C
Top Operating Junction Temperature Range
-40 to +125
°C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
(*) A higher positive voltage level can be applied to the pin with a resistor which limits the current flowing into the pin to 10mA maximum
THERMAL DATA
Symbol
Parameter
SO-8
Unit
Rthj-amb Thermal Resistance Junction-case
40 °C/W
Rthj-amb Thermal Resistance Junction-ambient (*)
160 °C/W
(*) This value is referred to one layer pcb board with minimum copper connections for the leads. a minimum value of 120 °C/W can be
obtained improving thermal conductivity of the board
ORDERING CODES
TYPE
STSR2
STSR2M
SO-8
STSR2CD
STSR2MCD
SO-8 (T&R)
STSR2CD-TR
STSR2MCD-TR
CONNECTION DIAGRAM (top view)
2/12


Part Number STSR2
Description FORWARD SYNCHRONOUS RECTIFIERS SMART DRIVER
Maker STMicroelectronics
Total Page 12 Pages
PDF Download
STSR2 pdf
STSR2 Datasheet PDF
[partsNo] view html
View PDF for Mobile








Similar Datasheet

1 STSR2 FORWARD SYNCHRONOUS RECTIFIERS SMART DRIVER STMicroelectronics
STMicroelectronics
STSR2 pdf
2 STSR220 HIGH EFFICIENCY SWITCHED MODE RECTIFIER STMicroelectronics
STMicroelectronics
STSR220 pdf
3 STSR2P FORWARD SYNCHRONOUS RECTIFIERS SMART DRIVER STMicroelectronics
STMicroelectronics
STSR2P pdf
4 STSR2PM FORWARD SYNCHRONOUS RECTIFIERS SMART DRIVER STMicroelectronics
STMicroelectronics
STSR2PM pdf
5 STSR3 SYNCHRONOUS RECTIFIERS SMART DRIVER STMicroelectronics
STMicroelectronics
STSR3 pdf
6 STSR30 SYNCHRONOUS RECTIFIER SMART DRIVER STMicroelectronics
STMicroelectronics
STSR30 pdf





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy