IR2085S

Series: -
Type: -
On-State Resistance: -
Current - Output / Channel: -
Current - Peak Output: -
Number of Outputs: 2
Mounting Type: Surface Mount
Package / Case: 8-SOIC (0.154", 3.90mm Width)
Packaging: Tube
Number of Configurations: 1
Operating Temperature: -40°C ~ 125°C
Supplier Device Package: 8-SOICN
Current - Peak: 1A
Configuration: Half Bridge
Voltage - Supply: 10 V ~ 15 V
Delay Time: -
Manufacturer: International Rectifier
Input Type: Self Oscillating
High Side Voltage - Max (Bootstrap): 100V


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 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


Pinout




Specifications

Symbol	Definition	Min.	Max.	Units
Vb	High side floating supply voltage	-0.3	150	V
VCC	Low side supply voltage	-	25
VS	High side floating supply offset voltage	Vb - 25	Vb + 0.3
VHO	High side floating output voltage	Vb - 0.3	Vb + 0.3
VLO	Low side output voltage	-0.3	VCC + 0.3
OSC	OSC pin voltage	-0.3	VCC + 0.3
VCS	Cs pin voltage	-0.3	VCC + 0.3
dVS/dt	Allowable offset voltage slew rate	-50	+50	V/ns
ICC	Supply current	-	20	mA
PD	Package power dissipation	-	1.0	W
RthJA	Thermal resistance, junction to ambient	-	200	/W
TJ	Junction temperature	-55	150
TS	Storage temperature	-55	150
TL	Lead temperature (soldering, 10 seconds)	-	300

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 fosc, where fosc can be set by selecting RT & CT, where fosc 1/(2*RT.CT). Dead-time can be controlled through proper selection of CT 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 VCC is less than 7.5Vdc.

Parameters:

Technical/Catalog Information	IR2085S
Vendor	International Rectifier
Category	Integrated Circuits (ICs)
Configuration	Half Bridge
Voltage - Supply	10 V ~ 15 V
Current - Peak	1A
Delay Time	-
Package / Case	8-SOIC (3.9mm Width)
Packaging	Tube
Number of Outputs	2
Input Type	Self Oscillating
Number of Configurations	1
Operating Temperature	-40°C ~ 125°C
High Side Voltage - Max (Bootstrap)	100V
Lead Free Status	Contains Lead
RoHS Status	RoHS Non-Compliant
Other Names	IR2085S IR2085S