STSR2PCD-TR STMicroelectronics, STSR2PCD-TR Datasheet

STSR2PCD-TR

Manufacturer Part Number

STSR2PCD-TR

Description

IC SYNC RECT SMART DRIVER 8 SOIC

Manufacturer

STMicroelectronics

Datasheet

1.STSR2PCD-TR.pdf (12 pages)

Specifications of STSR2PCD-TR

Configuration

Low-Side

Input Type

Non-Inverting

Current - Peak

Number Of Configurations

Number Of Outputs

Voltage - Supply

4.5 V ~ 5.5 V

Operating Temperature

-40°C ~ 125°C

Mounting Type

Surface Mount

Package / Case

8-SOIC (3.9mm Width)

Output Voltage

0.16 V

Operating Temperature Range

- 40 C to + 125 C

Mounting Style

SMD/SMT

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Delay Time

High Side Voltage - Max (bootstrap)

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

Other names

497-2154-2

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

STSR2PCD-TR

Manufacturer:

Quantity:

20 000

Current page: 1 of 12
Download datasheet (294Kb)

DESCRIPTION

STSR2P

complementary high current outputs to drive

Power Mosfets. The IC is dedicated to properly

drive

medium power, low output voltage, high efficiency

Forward Converters. From a synchronizing clock

input, STSR2P generates two driving signals with

the

complementary pulses. The IC operation prevents

secondary

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

SCHEMATIC DIAGRAM

September 2003

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

self-setting

secondary

Smart

side

Synchronous

Driver

shoot-through

INHIBIT

dead

time

provides

FREQUENCY

OSCILLATOR

DETECTOR

Rectifiers

PEAK

HIGH

25mV

conditions

between

SGLGND

two

Vcc

UVLO

BIAS

CONTROL

DIGITAL

RECTIFIERS SMART DRIVER

anticipation in turning-off the OUT

respect to the clock signal transition is provided,

while the anticipation in turning off the OUT

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

makes discontinuous conduction mode possible

and prevents the freewheeling mosfet from

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.

FORWARD SYNCHRONOUS

PWRGND

ANTICIPATION

BUFFERS

OUTPUT

SET

5.7V

OUTGate1

SETANT2

OUTGate2

SO-8

STSR2PM

GATE2

STSR2P/

. This feature

GATE1

GATE2

with

1/12

Related parts for STSR2PCD-TR

STSR2PCD-TR Summary of contents

Page 1

SUPPLY VOLTAGE RANGE: 4.5V TO 5.5V TYPICAL PEAK OUTPUT CURRENT: SOURCE -2A, SINK 3.5A OPERATING FREQUENCY 750 KHZ SMART TURN-OFF ANTICIPATION TIMING OPERATION INDEPENDENT FROM THE FORWARD MAGNETIC RESET TECHNIQUE POSSIBILITY TO OPERATE IN DISCONTINUOUS MODE DESCRIPTION STSR2P ...

Page 2

... ORDERING CODES TYPE STSR2P STSR2PM CONNECTION DIAGRAM (top view) 2/12 Parameter =105°C without heatsink A Pins 1, Pin 3 Parameter SO-8 STSR2PCD STSR2PMCD Value Unit - 270 0.9 KV -55 to +150 °C -40 to +125 °C SO-8 Unit 40 °C/W 160 °C/W SO-8 (T&R) STSR2PCD-TR STSR2PMCD-TR ...

Page 3

PIN DESCRIPTION Pin N° Symbol 1 OUT GATE1 SET ANT2 INHIBIT 6 SGLGND 7 OUT GATE2 8 PWRGND Name and Function Gate Drive signal for Rectifier MOSFET. Anticipation (t OUT is provided when ...

Page 4

STSR2P/STSR2PM ELECTRICAL CHARACTERISTICS (V otherwise specified.) Symbol Parameter SUPPLY INPUT AND UNDER VOLTAGE LOCK OUT V Start Threshold CCON V Turn OFF Threshold After CCOFF Start V Zener Voltage Z I Unloaded Supply Current CC GATE DRIVER OUTPUTS V Output ...

Page 5

TIMING DIAGRAM APPLICATION INFORMATION: STSR2 IN FORWARD CONVERTER SECONDARY SIDE NOTES 1) Ceramic Capacitors C1 and C2 must be placed very close to the IC and R2 set the anticipation time by partitioning the and ...

Page 6

STSR2P/STSR2PM EXAMPLE OF COMPONENTS SELECTION FOR A FORWARD CONVERTER Forward Specification: V =36-72V IN V =3.3V OUT n=Np/Ns=4.5 R and R are calculated assuring a minimum voltage of 2. pin. At 36V input, the voltage on the 3 ...

Page 7

INHIBIT OPERATION OF OUT NOTE: V =+200mV INHIBIT GATE2 STSR2P/STSR2PM 7/12 ...

Page 8

STSR2P/STSR2PM TYPICAL PERFORMANCE CHARACTERISTICS (unless otherwise specified T Figure 1 : Zener Characteristics Figure 2 : Rise and Fall Time vs Load Capacitor Figure 3 : OUT vs Characteristics GATE1,2 8/12 = 25°C j Figure 4 : Sink-Source ON Resistance ...

Page 9

Figure 7 : Supply Current vs Load Capacitor (each output) Figure 8 : Supply Current vs Clock Frequency Figure Temperature ON(GATE2) STSR2P/STSR2PM Figure 10 : Duty Cycle Shut Down vs Temperature Figure 11 : Duty Cycle ...

Page 10

STSR2P/STSR2PM DIM. MIN. A 1.35 A1 0.10 A2 1.10 B 0.33 C 0.19 D 4. 5.80 h 0.25 L 0.40 k ddd 10/12 SO-8 MECHANICAL DATA mm. TYP MAX. 1.75 0.25 1.65 0.51 0.25 5.00 4.00 ...

Page 11

Tape & Reel SO-8 MECHANICAL DATA mm. DIM. MIN 12 8.1 Bo 5.5 Ko 2.1 Po 3.9 P 7.9 TYP MAX. MIN. 330 13.2 0.504 0.795 2.362 22.4 8.5 0.319 5.9 0.216 ...

Page 12

... 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 ...

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