Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Gate Drivers

Infineon Technologies IR2085STRPBF

Name: IR2085STRPBF
Brand: Infineon Technologies
SKU: IR2085STRPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: IR2085STRPBF

Manufacturer:: Infineon Technologies

Category:: Gate Drivers

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: IR2085STRPBF.pdf

Description:: IC GATE DRVR HALF-BRIDGE 8SOIC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:985

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

IR2085STRPBF from Infineon Technologies is a self-oscillating half-bridge gate driver IC with integrated 50% duty cycle oscillator, 100V floating channel, ±1A peak drive current, and programmable 50–500kHz switching frequency. It targets primary-side control in 36–75V DC-bus converters for telecom and industrial power supplies.

For engineers reviewing the IR2085STRPBF datasheet, IR2085STRPBF pinout, IR2085STRPBF application, or IR2085STRPBF equivalent, key selection criteria include bootstrap-compatible high-side operation up to +100V, adjustable 50–200ns dead-time, ±25ns HO/LO pulse matching, and integrated overcurrent protection with 200ns shutdown delay.

Technical Context

The IR2085STRPBF implements a fixed 50% duty cycle oscillator whose frequency is set externally via RT (10–100kΩ) and CT (47–470pF), yielding f_OSC = 1/(2·R_T·C_T). Dead-time is directly controlled by CT value and ranges from 50ns to 200ns without external logic.

It features independent UVLO on V_CC (7.3V typical turn-on) and V_BS, internal soft-start that scales pulse width during startup and after overcurrent events, and a current-sense comparator with dual thresholds (200mV/300mV) referenced to COM.

Key Specifications

Parameter	Value and Actual Design Meaning
V_OFFSET max	100V - supports bootstrap high-side operation up to +100Vdc offset relative to COM
I_O+/I_O−	±1.0A - sufficient to drive low-Q_g MOSFETs at up to 500kHz without external buffers
f_OSC range	50–500kHz - set by RT/CT; enables optimization of efficiency vs. EMI in DC-bus converters
Dead-time	50–200ns - adjustable via CT; prevents shoot-through in half-bridge topologies
Pulse matching	±25ns - ensures symmetrical HO/LO timing across full VS range (0–100V)
UVLO threshold	7.3V (typ.) - prevents erratic operation during brown-out; hysteresis ensures clean restart
Overcurrent delay	200ns (typ.) - fast fault response preserves MOSFET SOA during transient overloads

Pinout & Package

IR2085STRPBF is housed in an 8-lead SOIC package (JEDEC MS-012AA), surface-mount compatible, with standard 1.27mm pitch and 5.00 × 4.00 mm body dimensions.

Pin/Terminal	Circuit Role	Design Meaning
VCC	Low-side bias supply input	Provides logic and driver power; requires local 0.1µF ceramic bypass to COM
GND (COM)	Signal and power ground reference	Common return for all analog/digital functions; must be low-impedance ground plane
V_B	High-side floating supply input	Connected to bootstrap capacitor; supports up to +100V offset above VS
V_S	High-side floating supply return	Direct connection point to high-side MOSFET source; minimizes parasitic inductance
H_O	High-side gate drive output	±1A capable driver; routed close to high-side MOSFET gate to preserve edge integrity
L_O	Low-side gate drive output	±1A capable driver; referenced to COM; matched timing with H_O within ±25ns
C_S	Overcurrent sense input	Connects to shunt resistor; triggers shutdown when voltage exceeds 200–350mV threshold
O_SC	Oscillator programming node	Interface for RT (to VCC) and CT (to COM); sets f_OSC and dead-time simultaneously

Key Features

Feature	Design Value
Integrated 50% duty oscillator	Eliminates external clock generator; reduces BOM count and layout complexity in half-bridge controllers
Adjustable dead-time (50–200ns)	Prevents cross-conduction without external timing circuitry; tuned via single CT capacitor
±25ns HO/LO pulse matching	Maintains symmetrical drive under varying VS conditions (0–100V), critical for balanced power stage stress
Internal soft-start	Gradually increases output pulse width at power-up and after overcurrent faults, preventing inrush current spikes
Dual-threshold overcurrent protection	200mV/300mV hysteresis enables robust current sensing across temperature and process variation

Applications

Telecom DC-Bus Converter

Industrial 48V Power Distribution

Use Scenario: Primary-side regulation in 48V-to-12V isolated half-bridge DC-DC converters for base station power shelves.

IC Role / Device Role / Timing Role: Self-oscillating half-bridge driver providing synchronized 50% duty HO/LO outputs with programmable frequency and dead-time.

Use Value: Reduces component count by integrating oscillator and dual drivers; ±25ns timing match ensures balanced transformer excitation and low EMI.

Use Scenario: Half-bridge stage in 36–75V input industrial SMPS for PLC and motor drive auxiliary supplies.

IC Role / Device Role / Timing Role: Gate driver with 100V floating capability enabling direct bootstrap operation from high-voltage bus.

Use Value: Adjustable dead-time (50–200ns) accommodates diverse MOSFET gate charge profiles while preventing shoot-through.

Push-Pull Converter Control

Redundant Power Supply Module

Use Scenario: Push-pull topology in wide-input-range (36–75V) converters where input voltage restriction does not apply.

IC Role / Device Role / Timing Role: Dual-channel driver delivering matched, non-overlapping gate signals with internal soft-start and UVLO.

Use Value: Eliminates need for external timing IC or transformer-coupled drive; ±1A drive sustains fast switching up to 500kHz.

Use Scenario: Hot-swappable 48V backup modules requiring reliable, fault-tolerant gate drive with fast OCP response.

IC Role / Device Role / Timing Role: Fault-aware driver with 200ns overcurrent shutdown delay and automatic soft-restart after fault clearance.

Use Value: Dual-threshold CS input (150–350mV) enables precise current limiting across temperature; UVLO hysteresis prevents cycling during marginal input.

Equivalent & Alternatives

The following parts are listed as comparable options for similar half-bridge driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRS2085SPBF	Same pinout and function; identical electrical specs; Infineon rebranding post-IR acquisition	No functional difference; fully interchangeable in existing designs	Select for new designs requiring current Infineon part numbering and support channels
UCC27211DR	Non-oscillating, dual-input driver; requires external PWM controller; 120V V_BS rating	Suitable only when external frequency control and variable duty cycle are required	Choose only if design mandates programmable duty cycle or >500kHz operation beyond IR2085S capability

Compared with IRS2085SPBF, IR2085STRPBF offers identical performance and drop-in compatibility; versus UCC27211DR, it trades external control flexibility for reduced system-level component count and simplified layout in fixed-frequency, 50% duty applications.

Availability

IR2085STRPBF is available at Aetrix Electronics and suitable for telecom DC-bus converters, industrial 48V power distribution systems, and push-pull converter designs requiring stable component supply and long-term manufacturability.

Supply support for IR2085STRPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a global semiconductor leader focused on power management, automotive, and industrial applications, with core expertise in high-voltage gate drivers and power conversion ICs.

The IR2085S product line was developed specifically for cost-sensitive, high-reliability half-bridge DC-DC converters in 36–75V distributed power architectures, emphasizing integration, thermal robustness, and ease of use.

FAQ

What is the minimum recommended VCC voltage for reliable operation?

The IR2085STRPBF requires VCC ≥ 7.5V to exit undervoltage lockout, but operation between 7.5V and 8.5V may cause asymmetrical HO/LO pulses. For guaranteed specification compliance-including ±25ns pulse matching and full 1A drive capability-VCC must be maintained at or above 9.5V. This ensures stable internal biasing and consistent gate drive strength across temperature and load.

How is dead-time adjusted, and what is its practical impact on MOSFET selection?

Dead-time is set solely by the CT capacitor value (47–470pF), with lower CT yielding shorter dead-time (e.g., 50ns at 47pF) and higher CT yielding longer dead-time (e.g., 200ns at 470pF). This directly affects MOSFET selection: short dead-time suits fast-switching, low-Q_g devices, while longer dead-time accommodates slower MOSFETs or layouts with higher gate loop inductance, preventing shoot-through without compromising efficiency.

Can IR2085STRPBF drive both N-channel and P-channel high-side MOSFETs?

The IR2085STRPBF is designed exclusively for N-channel high-side MOSFETs in bootstrap configuration. Its floating channel architecture provides gate drive referenced to VS, requiring the high-side MOSFET source to be connected to VS and its drain to the positive rail. It does not support P-channel high-side configurations, which would require source-referenced drive and lack of bootstrap dependency-functionality absent in this IC's architecture.

What is the maximum allowable dV/dt on the VS node, and how is it enforced?

The absolute maximum dV/dt on the VS node is ±50V/ns, per the device's Absolute Maximum Ratings. Exceeding this can cause false triggering or latch-up. To enforce compliance, layout best practices are essential: minimize VS trace inductance with short, wide copper paths; place bootstrap diode and capacitor adjacent to VB/VS pins; and avoid routing noisy signals near VS. No internal circuitry actively limits dV/dt-the specification reflects physical process limits, not a protected operating condition.

IR2085STRPBF Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Not For New Designs

Programmable:: Not Verified

Driven Configuration:: Half-Bridge

Channel Type:: Independent

Number of Drivers:: 2

Gate Type:: N-Channel MOSFET

Voltage - Supply:: 10V ~ 15V

Logic Voltage - VIL, VIH:: -

Current - Peak Output (Source, Sink):: 1A, 1A

Input Type:: RC Input Circuit

High Side Voltage - Max (Bootstrap):: 100 V

Rise / Fall Time (Typ):: 40ns, 20ns

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

IR2085STRPBF FAQ

1.How can I place an order for IR2085STRPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IR2085STRPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for IR2085STRPBF reliable?

The price and inventory of IR2085STRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IR2085STRPBF is usually 5 days.

3.What payment methods are accepted for IR2085STRPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IR2085STRPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IR2085STRPBF?

IR2085STRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IR2085STRPBF order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for IR2085STRPBF?

For technical support, including IR2085STRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IR2085STRPBF requirements.

6.How does Aetrix verify that IR2085STRPBF is sourced from the original manufacturer or authorized distributors?

All IR2085STRPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that IR2085STRPBF meets industry standards.

7.What is the process for return or replacement of IR2085STRPBF?

All IR2085STRPBF units undergo pre-shipment inspection (PSI). If there is an issue with IR2085STRPBF, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The IR2085STRPBF part is unused and in its original packaging.

Return procedure for IR2085STRPBF:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…