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

Infineon Technologies AUIR3200S

Name: AUIR3200S
Brand: Infineon Technologies
SKU: AUIR3200S
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUIR3200S

Manufacturer:: Infineon Technologies

Category:: Gate Drivers

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

Datasheet:: AUIR3200S.pdf

Description:: IC GATE DRVR HIGH-SIDE 8SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:4,234

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Product details

Overview

AUIR3200S from Infineon Technologies is an automotive-grade high-side MOSFET driver IC with integrated V_DS-based short-circuit protection, PTC-based over-temperature shutdown, reverse-battery protection, ground-loss detection, and diagnostic output. It operates from 6–36 V, delivers 5–7 V gate drive, supports SOIC-8 packaging, and targets low-R_DS(on) power switches in 12 V/24 V vehicle systems such as body control modules and lighting drivers.

For engineers reviewing the AUIR3200S datasheet, AUIR3200S pinout, AUIR3200S application, or AUIR3200S equivalent, key selection criteria include programmable V_DS current threshold via R_VDS, thermal shutdown interface compatibility with PTC sensors, diagnostic timing (10 ms), blanking window (15–35 µs), and gate drive capability (160 mA peak sink/source).

Technical Context

The AUIR3200S implements a dual-protection architecture: real-time V_DS monitoring for over-current detection with adjustable threshold (via external R_VDS) and blanking during turn-on (15–35 µs), plus PTC-sensor-based thermal shutdown triggered when V_PTC exceeds 2 V (corresponding to ~5 kΩ sensor resistance). It uses an internal charge pump and bootstrap regulator to sustain gate drive above battery voltage.

Its diagnostic output provides fault status (short-to-ground, over-temperature, UVLO) with defined timing: 10 ms diagnostic pulse width and 7–30 µs sleep-entry delay. The input accepts 2.7–5.5 V logic levels with 0.5–2.1 V hysteresis, and the gate driver delivers 5.7 V typical V_GS at zero load with 160 mA peak source/sink current.

Key Specifications

Parameter	Value and Actual Design Meaning
Operating Voltage	6–36 V: Supports full automotive battery range including cold-crank (6 V) and load-dump (36 V) transients.
V_GS Output	5–7 V: Sufficient to fully enhance low-R_DS(on) N-channel MOSFETs in high-current automotive loads.
V_DS Protection Threshold	Programmable via R_VDS: Enables precise over-current trip point matching MOSFET R_DS(on) and target current limit.
T_{BLANK_ON}	15–35 µs: Disables V_DS sensing during MOSFET turn-on to prevent false trips due to transitional conduction.
Diagnostic Pulse Width	10 ms: Provides unambiguous fault identification timing for microcontroller GPIO capture without additional filtering.
I_GS⁺/I_GS⁻	160/130 mA peak: Ensures fast MOSFET switching (T_R/T_F ≈ 1 µs) even with 220 nC gate charge devices.
P_TC Interface	1.3–14.3 kΩ threshold: Matches standard automotive PTC thermistors for accurate junction-temperature tracking of external MOSFET.

Pinout & Package

Package: SOIC-8 (SO-8), surface-mount, 150 °C maximum junction temperature rating, RoHS-compliant.

Pin/Terminal	Circuit Role	Design Meaning
V_CC	Supply input	Primary power rail (6–36 V); powers internal regulators, logic, and gate driver stages.
GND	Ground reference	Common return for logic, analog, and power sections; must be low-impedance connection to minimize noise coupling.
IN/DG	Input & diagnostic output	CMOS-compatible input (2.7–5.5 V); outputs open-drain diagnostic pulse during fault conditions.
V_DS	V_DS sense input	Connects to MOSFET drain to monitor conduction voltage drop for over-current detection.
PTC	Thermal sensor input	Accepts voltage divider output from external PTC thermistor; triggers shutdown when R_PTC > ~5 kΩ.
C_BOOT	Bootstrap capacitor node	Provides floating supply for high-side gate drive; requires ≥100 nF ceramic capacitor to V_S.
S	Source reference	Connects to MOSFET source terminal; serves as return path for V_DS and C_BOOT circuits.
G	Gate drive output	Drives MOSFET gate directly; capable of 160 mA peak source/sink into capacitive load.

Key Features

Feature	Design Value
Reverse-battery protection	Activates MOSFET during reverse polarity to clamp system voltage and prevent damage to downstream electronics.
Ground-loss detection	Identifies open-circuit ground connections by monitoring V_CC–V_S differential and asserting diagnostic flag.
V_DS-based short-circuit protection	Eliminates need for external current-sense shunt; enables compact, low-loss designs using only R_VDS resistor.
Integrated charge pump + bootstrap	Enables continuous high-side drive without external high-voltage bias supply or complex level-shifting circuitry.
ESD protection	HBM ±2 kV rating ensures robustness against handling and assembly electrostatic discharge events.

Applications

Body Control Module (BCM)

LED Headlamp Driver

Use Scenario: Driving high-current N-channel MOSFETs controlling door locks, window lifts, and seat motors in 12 V vehicle architectures.

IC Role / Device Role / Timing Role: High-side gate driver with integrated diagnostics and protection, replacing discrete FET+driver+protection solutions.

Use Value: Reduces BOM count by eliminating external current-sense resistors and thermal monitoring ICs while enabling fault logging via diagnostic pin.

Use Scenario: Controlling multi-string LED arrays in adaptive front-lighting systems (AFS) requiring PWM dimming and short-circuit resilience.

IC Role / Device Role / Timing Role: Fault-tolerant high-side switch driver with <10 ms diagnostic response for real-time LED string failure reporting.

Use Value: Prevents thermal runaway during LED short-circuit events via V_DS blanking and PTC-coupled shutdown, improving system safety compliance.

Start-Stop System Load Switch

Electric Power Steering (EPS) Auxiliary Loads

Use Scenario: Managing auxiliary loads (e.g., HVAC blower, fuel pump) during engine cranking where battery voltage dips to 6 V.

IC Role / Device Role / Timing Role: Wide-input (6–36 V) high-side driver with UVLO hysteresis (5.2–5.9 V) ensuring reliable operation across start-stop cycles.

Use Value: Maintains gate drive integrity during cold-crank transients without brown-out resets or unintended turn-off.

Use Scenario: Isolating non-critical EPS subsystems (e.g., cooling fan, heater) during fault conditions to preserve steering functionality.

IC Role / Device Role / Timing Role: Safety-relevant power switch with ASIL-B-capable diagnostics (ISO 26262-ready) and redundant protection layers.

Use Value: Enables fail-safe load disconnection within <35 µs blanking window and <10 ms diagnostic assertion for ASIL decomposition.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side MOSFET driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS2HB35-Q1	Higher V_CC max (40 V), integrated current sense amplifier (not V_DS-based), no PTC interface	Requires external current-sense resistor and separate thermal monitoring; better suited for precision current regulation	Select when analog current feedback is required over digital fault flags
BTS724G	Integrated current sense with proportional output, no V_DS blanking, fixed thermal shutdown threshold	Lacks programmable over-current trip and PTC flexibility; optimized for cost-sensitive linear-regulator replacement	Select for simpler, lower-cost implementations where adjustable thresholds are unnecessary

Compared with TPS2HB35-Q1 and BTS724G, the AUIR3200S uniquely combines V_DS-based over-current detection with blanking, PTC-based thermal shutdown, and reverse-battery activation-enabling compact, self-contained high-side switching without external sensing or bias components.

Availability

AUIR3200S is available at Aetrix Electronics and suitable for body control modules, LED headlamp drivers, start-stop system load switches, and electric power steering auxiliary loads requiring stable component supply across automotive production lifecycles.

Supply support for AUIR3200S 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 German semiconductor manufacturer specializing in power management, automotive electronics, and security solutions, with global manufacturing and R&D infrastructure.

The AUIR3200S belongs to Infineon's Automotive Intelligent Power Switch (IPS) product line, designed specifically for high-reliability, protected high-side switching in 12 V/24 V vehicle networks where functional safety and thermal resilience are critical.

FAQ

What is the purpose of the C_BOOT pin and what capacitor value is recommended?

The C_BOOT pin supplies the floating voltage needed for high-side gate drive. It connects to a 100 nF ceramic capacitor between C_BOOT and the MOSFET source (S) pin. This capacitor is recharged via the internal bootstrap diode during each switching cycle to maintain sufficient gate-source voltage for full enhancement of the N-channel MOSFET.

How does the AUIR3200S implement reverse-battery protection?

During reverse battery connection, the AUIR3200S activates its internal driver to turn on the external N-channel MOSFET, effectively shorting the reverse voltage across the MOSFET's body diode. This clamps the system voltage and prevents damage to downstream electronics, unlike passive diode-based solutions that incur significant forward voltage drop and power loss.

Can the V_DS over-current threshold be adjusted for different MOSFET R_DS(on) values?

Yes-the V_DS over-current threshold is set by an external resistor (R_VDS) between V_CC and V_DS. Using the formula I_SD = I_VDS × R_VDS / R_DS(on), designers can precisely match the trip point to the specific MOSFET's on-resistance and desired current limit, with recommended R_VDS ≤ 2.9 kΩ to avoid latching.

What is the function of the PTC pin and how should the sensor be mounted?

The PTC pin interfaces with an external positive-temperature-coefficient thermistor placed thermally adjacent to the power MOSFET. To ensure accurate junction-temperature tracking, the PTC sensor must be mounted as close as possible to the MOSFET tab or drain, surrounded by copper pour, and connected via a short PCB trace to minimize thermal resistance and electrical noise.

AUIR3200S Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

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

Packaging:: Tube

Product Status:: Obsolete

Programmable:: Not Verified

Driven Configuration:: High-Side

Channel Type:: Single

Number of Drivers:: 1

Gate Type:: N-Channel MOSFET

Voltage - Supply:: 6V ~ 36V

Logic Voltage - VIL, VIH:: 0.9V, 2.7V

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

Input Type:: Non-Inverting

High Side Voltage - Max (Bootstrap):: -

Rise / Fall Time (Typ):: 1µs, 1µs

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

AUIR3200S FAQ

1.How can I place an order for AUIR3200S through Aetrix?

Please submit a Request for Quotation (RFQ) for AUIR3200S 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 AUIR3200S reliable?

The price and inventory of AUIR3200S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIR3200S is usually 5 days.

3.What payment methods are accepted for AUIR3200S?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIR3200S transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUIR3200S?

AUIR3200S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUIR3200S 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 AUIR3200S?

For technical support, including AUIR3200S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIR3200S requirements.

6.How does Aetrix verify that AUIR3200S is sourced from the original manufacturer or authorized distributors?

All AUIR3200S 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 AUIR3200S meets industry standards.

7.What is the process for return or replacement of AUIR3200S?

All AUIR3200S units undergo pre-shipment inspection (PSI). If there is an issue with AUIR3200S, 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 AUIR3200S part is unused and in its original packaging.

Return procedure for AUIR3200S:

1.Submit a request within 90 days.

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

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