IR2085S International Rectifier, IR2085S Datasheet

no-image

IR2085S

Manufacturer Part Number
IR2085S
Description
IC DRVR HALF-BRDG SELF-OSC 8SOIC
Manufacturer
International Rectifier
Datasheet

Specifications of IR2085S

Configuration
Half Bridge
Input Type
Self Oscillating
Current - Peak
1A
Number Of Configurations
1
Number Of Outputs
2
High Side Voltage - Max (bootstrap)
100V
Voltage - Supply
10 V ~ 15 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Delay Time
-
Other names
*IR2085S

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
IR2085S
Manufacturer:
IR
Quantity:
20 000
Part Number:
IR2085STR
Manufacturer:
IR
Quantity:
20 000
Part Number:
IR2085STRPBF
Manufacturer:
International Rectifier
Quantity:
1 950
Part Number:
IR2085STRPBF
Manufacturer:
IR
Quantity:
20 000
Part Number:
IR2085STRPBF
0
Company:
Part Number:
IR2085STRPBF
Quantity:
5 000
Company:
Part Number:
IR2085STRPBF
Quantity:
2 500
Company:
Part Number:
IR2085STRPBF
Quantity:
6 000
Company:
Part Number:
IR2085STRPBF
Quantity:
4
Company:
Part Number:
IR2085STRPBF
Quantity:
12 500
www.irf.com
Typical Connection Diagram
Features
Description
The IR2085S is a self-oscillating half-bridge driver IC with 50% duty cycle ideally suited for 36V – 75V half-
bridge DC-bus converters.
This product is also suitable for push-pull converters without restriction on input voltage.
Each channel frequency is equal to f
Dead-time can be controlled through proper selection of C
soft-start increases the pulse width during power up and maintains pulse width matching for the high and
low outputs throughout the start up cycle. The IR2085S initiates a soft start at power up and after every
overcurrent condition. Undervoltage lockout prevents operation if V
IC in a single SO-8 package
max per channel
MOSFETs
+100Vdc
Simple primary side control solution to enable half-bridge DC-Bus
Converters for 48V distributed systems with reduced component
count and board space
Integrated 50% duty cycle oscillator & half-bridge driver
Programmable switching frequency with up to 500kHz
+/- 1A drive current capability optimized for low charge
Adjustable dead-time 50ns – 200ns
Floating channel designed for bootstrap operation up to
High and low side pulse width matching to +/- 25ns
Adjustable overcurrent protection
Undervoltage lockout and internal soft start
Also available Leadfree
OSC,
which can be set by selecting R
HIGH SPEED, 100V, SELF OSCILLATING 50%
T
DUTY CYCLE, HALF-BRIDGE DRIVER
and can range from 50ns to 200ns. Internal
CC
is less than 7.5V.
Product Summary
Package
T
Topology
V
I
f
Deadtime
HO/LO Pulse
Matching
& C
o+
OSC
8 - Lead SOIC
OFFSET
Data Sheet No. PD60206 Rev.D
& I
IR2085S & (PbF)
T,
(max)
where f
o-
(typical)
OSC
= 1/(2*R
50ns – 200ns
1.0A & 1.0A
Half-Bridge
+/- 25ns
≤ 100 V
500kHz
T
.C
T
).
1

Related parts for IR2085S

IR2085S Summary of contents

Page 1

... Undervoltage lockout and internal soft start Also available Leadfree Description The IR2085S is a self-oscillating half-bridge driver IC with 50% duty cycle ideally suited for 36V – 75V half- bridge DC-bus converters. This product is also suitable for push-pull converters without restriction on input voltage. Each channel frequency is equal to f ...

Page 2

... IR2085S & (PbF) Absolute Maximum Ratings Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage param- eters are absolute voltages referenced to COM. All currents are defined positive into any lead. The thermal resistance and power dissipation ratings are measured under board mounted and still air conditions. ...

Page 3

... IR2085S & ( PbF) Max. Units Test Conditions 60 nsec — KHz C =100pF, T — R =10Kohm T — nsec pulse 100V S 1 ...

Page 4

... IR2085S & (PbF) Functional Block Diagrams VCC UVLO RT OSC OSC BLOCK CT + OVC CS - VREF (250mV) GND Lead Definitions Symbol Description V CC Logic supply GND Logic supply return Vb High side floating supply V S Floating supply return HO High side output LO Low side output CS Current sense input ...

Page 5

... C = 47pF T 100 C = 100pF 100 125 C) Fig. 2 Typical Dead Time (@25 DT(CT=100pF, RT=100k) - Temperature Fig. 3 Typical Dead Time vs Temperature IR2085S & ( PbF 470pF 220pF 100pF 47pF (kohms 100 120 100 5 ...

Page 6

... CT, shorter the dead time and vice versa not recommended to use a timing capacitor below 47pF, for best performance keep the timing components physically as close as possible to the IR2085S. Separated ground and V traces to the timing components are encouraged ...

Page 7

... DIMENSION DOES NOT INCLUDE MOLD PROTRUSIONS. MOLD PROTRUSIONS NOT TO EXCEED 0.15 [.006]. 6 DIMENSION DOES NOT INCLUDE MOLD PROTRUSIONS. MOLD PROTRUSIONS NOT TO EXCEED 0.25 [.010]. 7 DIMENSION IS THE LENGTH OF LEAD FOR SOLDERING TO A SUBSTRATE. 8-Lead SOIC IR2085S & ( PbF) INCHES MILLIMETERS DIM MIN MAX MIN ...

Page 8

... IR2085S & (PbF) LEADFREE PART MARKING INFORMATION Part number Date code Pin 1 Identifier ? MARKING CODE P Lead Free Released Non-Lead Free Released ORDERING INFORMATION PKG PART DESIG NUMBER PART NUMBER S IR2085S S IR2085STR IR2085STRPbF This product has been designed and qualified for the industrial market. ...

Related keywords