IR2085STRPBF International Rectifier, IR2085STRPBF Datasheet

IR2085STRPBF

Manufacturer Part Number

IR2085STRPBF

Description

IC DRIVER HALF BRIDGE OSC 8SOIC

Manufacturer

International Rectifier

Datasheets

1.IR2085STRPBF.pdf (8 pages)

2.IR2085STRPBF.pdf (10 pages)

Specifications of IR2085STRPBF

Configuration

Half Bridge

Input Type

Self Oscillating

Current - Peak

Number Of Configurations

Number Of Outputs

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)

Number Of Drivers

Driver Configuration

Self-Oscillating

Driver Type

High and Low Side

Rise Time

60ns

Fall Time

30ns

Frequency (max)

500KHz

Operating Supply Voltage (max)

15V

Peak Output Current

1mA

Power Dissipation

Operating Supply Voltage (min)

10V

Operating Temp Range

-40C to 125C

Operating Temperature Classification

Automotive

Mounting

Surface Mount

Pin Count

Package Type

SOIC

Module Configuration

Half Bridge

Input Delay

40ns

Output Delay

20ns

Supply Voltage Range

10V To 15V

Driver Case Style

SOIC

No. Of Pins

Rohs Compliant

Yes

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Delay Time

Lead Free Status / Rohs Status

Compliant

Other names

IR2085SPBFTR

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Part Number

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Quantity

Price

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International Rectifier

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Company:

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Quantity:

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Current page: 1 of 10
Download datasheet (196Kb)

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

where f

and can range from 50 to 200nsec. Internal 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

www.irf.com

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 IC in a

single SO-8 package

Programmable switching frequency with up to 500kHz max per

channel

+/- 1A drive current capability optimized for low charge MOSFETs

Adjustable dead-time 50nsec – 200nsec

Floating channel designed for bootstrap operation up to +100Vdc

High and low side pulse width matching to +/- 25nsec

Adjustable overcurrent protection

Undervoltage lockout and internal soft start

Also available LEAD-FREE

osc

HIGH SPEED, 100V, SELF OSCILLATING 50% DUTY CYCLE,

Vbias (10-15V)

BIAS

1/(2*R

is less than 7.5Vdc.

). Dead-time can be controlled through proper selection of C

BOOT

OSC

GND

Simplified Circuit Diagram

BOOT

osc

, where f

osc

Vin ( 100V max)

can be set by selecting R

Product Summary

HALF-BRIDGE DRIVER

High/low side

output freq (f

Output Current (I

High/low side pulse

width matching

CC (max)

offset(max)

Data Sheet No. PD60206 Rev.C

IR2085S & (PbF)

& C

osc

Package

)

+/-1.0A(typ.)

S O -8

100Vdc

500kHz

+/- 25ns

25V

Related parts for IR2085STRPBF

IR2085STRPBF Summary of contents

Page 1

HIGH SPEED, 100V, SELF OSCILLATING 50% DUTY CYCLE, Features 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 IC in ...

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 ...

Page 3

Dynamic Electrical Characteristics 12V 1000 pF, and T BIAS CC BS LOAD Symbol Definition t r Turn-on rise time t f Turn-off fall time fosc Per channel output frequency tdt High/low output ...

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 ...

Page 5

C = 220pF C = 470pF (kohms) Fig. 1 Typical Output Frequency (-25 180 160 140 120 100 80 60 ...

Page 6

IR2085S & (PbF) Pin descriptions Cs: The input pin to the overcurrent comparator. Exceeding the overcurrent threshold value speci- fied in “Static Electrical Parameters” Section will terminate output pulses and start a new soft start cycle as soon as the ...

Page 7

IC bias supply, Vcc. The minimum voltage required on Vcc to make sure that IC will work within specifications must be higher than 8.5V (9.5V minimum Vcc is recommended to prevent asymmetrical gates signals on HO and LO pins ...

Page 8

IR2085S & (PbF) 200 IRF7380 36~60Vinput 200 39k 3V 15V rm 36~60Vinput Vdd IRF7493 1u 56k IR2085S OSC HO 47 GND VS LO VCC Vdd IRF7493 Figure 4 – IR2085S DC Bus converter reference design. 8 39k ...

Page 9

Case outline 0.25 [.010 0.25 [.010 NOTES: 1. DIMENSIONING & TOLERANC ING PER ASME Y14.5M-1994. 2. ...

Page 10

... PART DESIG NUMBER PART NUMBER S IR2085S S IR2085STR IR2085STRPbF This product has been designed and qualified for the industrial market. Qualification Standards can be found on IR’s Web Site WORLD HEADQUARTERS: 233 Kansas Street, El Segundo, California 90245 Tel: (310) 252-7105 10 IRxxxxxx YWW? ?XXXX ...

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