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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Motor Drivers, Controllers

Infineon Technologies AUIR3330S

Name: AUIR3330S
Brand: Infineon Technologies
SKU: AUIR3330S
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUIR3330S

Manufacturer:: Infineon Technologies

Category:: Motor Drivers, Controllers

Package:: TO-263-7, D2PAK (6 Leads + Tab)

Datasheet:: AUIR3330S.pdf

Description:: IC PWR SWITCH N-CHAN 1:1 D2PAK

Quantity:: RFQ Add To RFQ list

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Inventory:4,544

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Product details

Overview

AUIR3330S from Infineon Technologies (formerly International Rectifier) is an automotive-grade protected high-side MOSFET switch in D²PAK-7L package, designed for variable-speed DC motor control in 12V/24V systems. It integrates a 3.5 mΩ R_DS(on) MOSFET, programmable over-current shutdown (5–50 A), active di/dt control for EMI reduction, and analog current feedback via Ifb pin. Used in engine cooling fans and fuel pumps.

For engineers reviewing the AUIR3330S datasheet, AUIR3330S pinout, AUIR3330S application, or AUIR3330S equivalent, this page delivers verified technical context, real-world design values for PWM switching up to 30 kHz, thermal resistance (R_th(j-a) = 40 °C/W with 6 cm² footprint), diagnostic frequency (70 Hz OC fault), and sleep-mode current (1 µA).

Technical Context

The AUIR3330S implements a charge-pump-based high-side driver enabling DC operation without external bootstrap capacitor recharging circuitry. Its internal MOSFET features 3.5 mΩ R_DS(on) at T_j = 25°C and supports 45 A continuous output current under specified thermal conditions (R_th = 5 °C/W).

Protection logic includes latched over-temperature shutdown at 165°C typical, programmable over-current detection via R_Ifb, and under-voltage lockout with 1 V hysteresis. Diagnostic feedback is delivered as pulsed digital signal (35–95 Hz) on the IN pin during fault conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
R_DS(on)	3.5 mΩ max at T_j = 25°C - enables low conduction loss in 45 A motor drive applications
Max PWM frequency	30 kHz - supports high-resolution speed control without audible noise in blower motors
I_OUT continuous	45 A at T_amb = 85°C, R_th = 5 °C/W - defines usable load current under realistic under-hood thermal conditions
Diagnostic frequency	70 Hz typical for over-current - allows MCU firmware to reliably sample fault state with 15 ms window
Sleep current	1 µA typical - meets automotive low-power requirements during vehicle key-off mode
Over-temp threshold	165°C typical - triggers latch-off before silicon damage, aligning with AEC-Q100 Grade 0 limits
Input hysteresis	0.4–0.7 V - prevents oscillation during noisy 12V rail transitions in automotive environments

Pinout & Package

Package: D²PAK-7L (TO-263-7), thermally enhanced surface-mount package with exposed drain tab (Pin 4) for PCB heat sinking.

Pin/Terminal	Circuit Role	Design Meaning
1: Ifb	Current sense feedback output	Analog voltage proportional to load current (6400× ratio); used for closed-loop motor control and over-current programming
2: In	Digital input / diagnostic return	Accepts 3.2 V logic-high to enable; pulses diagnostic status (OC/OT) back to MCU during fault
3: Gnd	Signal ground reference	Separate from power ground; critical for accurate Ifb sensing and noise immunity
4: Vcc (Tab)	Power supply input / thermal pad	Connects to 6–18 V supply; metal tab serves as primary thermal path to PCB copper
5: Boot	Bootstrap capacitor node	Drives high-side gate; requires 100–220 nF ceramic cap to sustain DC operation
6 & 7: Out	High-side power output (parallel)	Both pins connect internally to MOSFET drain; paralleling reduces trace inductance and improves current sharing

Key Features

Feature	Design Value
Active di/dt control	Programmable slew rate (21–51 A/µs turn-on) reduces EMI in sensitive EMC environments like engine bays
Programmable over-current shutdown	Adjustable 11–50 A trip point via external R_Ifb, enabling one BOM for multiple motor loads
Latched fault reporting	Digital pulse train (35–95 Hz) on IN pin identifies OC vs OT faults without additional GPIO
GND/IN/Boot loss protection	Shuts down and asserts diagnostic if any of these pins disconnect - prevents erratic behavior during connector vibration
ESD robustness	HBM Class H4 (±4000 V), CDM Class C4 (±1000 V) - exceeds AEC-Q100 requirements for under-hood reliability

Applications

Engine Cooling Fan Control

Air Conditioning Blower Drive

Use Scenario: Variable-speed radiator fan driven by 12V battery with PWM from MCU.

IC Role / Device Role / Timing Role: High-side switch controlling motor power path; provides real-time current feedback for closed-loop speed regulation.

Use Value: Enables precise thermal management while reducing acoustic noise via 30 kHz PWM and active di/dt control.

Use Scenario: HVAC blower motor in passenger cabin requiring smooth ramp-up and stall protection.

IC Role / Device Role / Timing Role: Protected high-side driver with programmable over-current limit (30 A typical) and diagnostic feedback.

Use Value: Eliminates need for discrete current-sense amplifier and comparator; simplifies BOM and layout.

Fuel Pump Driver

Oil Circulation Pump

Use Scenario: 24V diesel fuel pump operating continuously with transient surge protection.

IC Role / Device Role / Timing Role: High-reliability power switch with latch-off over-temperature (165°C) and reverse-battery tolerant design.

Use Value: Survives harsh under-hood transients and ensures fail-safe shutdown before mechanical pump damage.

Use Scenario: Engine oil circulation pump in hybrid powertrain with frequent start-stop cycles.

IC Role / Device Role / Timing Role: Low-quiescent-current (1 µA) high-side switch supporting sleep/wake protocol via IN pin.

Use Value: Meets OEM key-off leakage budgets while enabling fast wake-up (<2 µs pulse) for immediate restart.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS4H160-Q1	Lower R_DS(on) (2.1 mΩ), integrated current sense ADC, no external bootstrap required	Requires SPI interface and external MCU firmware for diagnostics; lacks analog Ifb output	Preferred when digital diagnostics and higher integration outweigh analog feedback needs
STSPIN32F0B	Integrated 3-phase gate driver + Cortex-M0, no high-side MOSFET, requires external FETs	Targets brushless DC motors; not drop-in for brushed DC motor control	Choose only when upgrading to BLDC architecture with sensorless commutation

Compared with TPS4H160-Q1 and STSPIN32F0B, the AUIR3330S uniquely delivers analog current feedback, programmable over-current via resistor, and standalone operation-making it optimal for cost-sensitive brushed DC motor systems needing minimal MCU overhead and proven field reliability.

Availability

AUIR3330S is available at Aetrix Electronics and suitable for engine cooling fans, air conditioning blowers, and fuel pumps requiring stable component supply across automotive production lifecycles.

Supply support for AUIR3330S 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 specializing in power management, automotive, and industrial solutions, with core expertise in high-voltage and high-reliability ICs.

The AUIR3330S belongs to Infineon's automotive high-side switch product line, engineered specifically for ruggedized brushed DC motor control in 12V/24V vehicle subsystems with stringent AEC-Q100 Grade 0 compliance.

FAQ

What is the minimum bootstrap capacitor value required for reliable operation?

The AUIR3330S requires a minimum 100 nF ceramic capacitor on the BOOT pin. This value ensures sufficient charge storage to maintain gate drive during DC operation and 30 kHz PWM switching. Using <100 nF risks insufficient gate voltage and intermittent turn-off, especially at high duty cycles or elevated temperatures.

How does the programmable over-current shutdown work?

Over-current threshold is set by an external resistor (R_Ifb) between IFB and GND. With R_Ifb = 640 Ω, shutdown triggers at ~40 A; with R_Ifb = 1.5 kΩ, it triggers at ~17 A. The device compares sensed load current against this threshold and latches off upon violation, asserting diagnostic pulses on the IN pin.

Can the AUIR3330S drive inductive loads without external flyback protection?

Yes-the AUIR3330S integrates a robust body diode with 39 V breakdown voltage and handles freewheeling current during turn-off. However, for highly inductive loads (e.g., large solenoids), an external TVS or RC snubber is recommended to suppress voltage spikes exceeding V_BR = 40 V and prevent false over-voltage protection triggering.

What is the purpose of the dual OUT pins (6 and 7)?

Pins 6 and 7 are internally connected to the MOSFET drain and intended for parallel routing on the PCB. This reduces current density per trace, lowers parasitic inductance, improves thermal spreading across the D²PAK tab, and enhances EMI performance-especially critical in high-current (>30 A) automotive motor drives.

AUIR3330S Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: TO-263-7, D2PAK (6 Leads + Tab)

Packaging:: Tube

Product Status:: Obsolete

Motor Type - Stepper:: -

Motor Type - AC, DC:: Brushed DC

Function:: Controller

Output Configuration:: High Side

Interface:: On/Off

Technology:: -

Step Resolution:: -

Applications:: -

Current - Output:: -

Voltage - Supply:: -

Voltage - Load:: 6V ~ 18V

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

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: D2PAK (7-Lead)

AUIR3330S FAQ

1.How can I place an order for AUIR3330S through Aetrix?

Please submit a Request for Quotation (RFQ) for AUIR3330S 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 AUIR3330S reliable?

The price and inventory of AUIR3330S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIR3330S is usually 5 days.

3.What payment methods are accepted for AUIR3330S?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIR3330S transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUIR3330S?

AUIR3330S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUIR3330S 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 AUIR3330S?

For technical support, including AUIR3330S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIR3330S requirements.

6.How does Aetrix verify that AUIR3330S is sourced from the original manufacturer or authorized distributors?

All AUIR3330S 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 AUIR3330S meets industry standards.

7.What is the process for return or replacement of AUIR3330S?

All AUIR3330S units undergo pre-shipment inspection (PSI). If there is an issue with AUIR3330S, 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 AUIR3330S part is unused and in its original packaging.

Return procedure for AUIR3330S:

1.Submit a request within 90 days.

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

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