## General Description

The Infineon AUIR3316S-INF is a high-speed, low-side N-channel MOSFET driver with integrated high-performance protection features. It is designed to drive power MOSFETs in half-bridge or full-bridge configurations for DC-DC converters, motor control, and power management applications. The device integrates gate driving, fault detection, and diagnostic functions in a compact package, enabling efficient, high-frequency switching while protecting the system against overcurrent, overtemperature, and under-voltage conditions.

## Core Features

* Device Type: Low-side N-channel MOSFET driver
* Output Current Capability: ±4 A peak source/sink for fast gate transitions
* Input Logic Compatibility: 3.3 V and 5 V CMOS/TTL compatible
* Integrated Protections: Overcurrent protection, undervoltage lockout (UVLO), thermal shutdown
* Switching Support: Capable of driving MOSFETs at high frequencies up to 1 MHz and beyond
* Propagation Delay: Low input-to-output delay for precise timing
* Package Type: SOIC-8 for space-efficient PCB design

## Electrical Specifications

* Supply Voltage (V_CC): 4.5 V to 18 V
* Logic Input Thresholds:

* Input High Voltage (V_IH): 2.0 V minimum
* Input Low Voltage (V_IL): 0.8 V maximum
* Output Voltage Swing: V_CC - V_DS drop typical, capable of fully enhancing N-channel MOSFETs
* Output Drive Strength: ±4 A peak transient, 1.5 A continuous typical
* Quiescent Supply Current: 2 mA typical
* Maximum Operating Temperature: 150°C junction temperature

## Timing and Switching Performance

* Turn-on Propagation Delay (t_PLH): 20 ns typical
* Turn-off Propagation Delay (t_PHL): 20 ns typical
* Rise Time: 12 ns typical
* Fall Time: 10 ns typical
* Dead-Time Control: Programmable or externally adjustable dead-time for half-bridge configurations
* Switching Frequency Capability: Supports PWM operation up to 1 MHz depending on MOSFET gate charge

## Protection Features

* Undervoltage Lockout (UVLO): Prevents operation below safe supply voltage threshold
* Overcurrent Detection: Senses excessive current through the MOSFET and disables the driver
* Thermal Shutdown: Internal temperature sensing disables output above safe junction temperature
* Fault Reporting: Open-drain fault output pin for system monitoring and control
* Short-Circuit Tolerance: Built-in protection to limit current during short conditions

## Interface and Control

* Logic Inputs: TTL/CMOS compatible inputs for gate drive control
* Enable/Disable: Active high input to enable output driving
* Fault Output: Active low open-drain output for external monitoring
* Bootstrap Capability: Can be paired with high-side driver ICs for complementary half-bridge operation

## Thermal and Reliability

* Operating Temperature Range: -40°C to +125°C ambient, up to 150°C junction
* Storage Temperature: -55°C to +150°C
* Package Type: SOIC-8 with low thermal resistance for compact designs
* Thermal Resistance (R_thJA): 75°C/W typical
* RoHS Compliant and Lead-Free

## Applications

* DC-DC converters for telecom, industrial, and automotive systems
* Motor drives and motor control applications including brushless DC and stepper motors
* Synchronous rectification for efficient power conversion
* High-frequency power switching in industrial and server power supplies
* Embedded systems requiring robust gate driving with integrated protection
* Half-bridge and full-bridge topology power stages in SMPS and motor inverters

## Performance Characteristics

* High peak output current enables rapid switching of power MOSFETs with minimal delay
* Low propagation delay ensures precise timing for synchronous power stages
* Integrated protection mechanisms improve reliability and system robustness in industrial and automotive environments
* Compact SOIC-8 package allows dense PCB layout without sacrificing thermal management
* Wide supply voltage range accommodates various MOSFET gate drive requirements
* Thermal and electrical protections reduce risk of MOSFET damage under overcurrent or overtemperature conditions
* Optimized for high-frequency PWM operation, enabling efficient power conversion with minimal switching losses

The Infineon AUIR3316S-INF is a high-performance, robust low-side MOSFET driver suitable for a wide range of power electronics applications. Its combination of fast gate driving, integrated protection features, and high-current capability provides efficient, reliable, and safe operation for DC-DC converters, motor drives, and other high-speed switching applications.