Infineon Technologies AUIRS20162STR

Overview

AUIRS20162STR from Infineon Technologies (formerly International Rectifier) is an automotive-grade high-side gate driver IC with integrated Vs recharge transistor, designed for driving N-channel MOSFETs in high-voltage solenoid and injector control circuits. It features 150 V offset capability, 4.4–20 V output voltage range, 250 mA peak source/sink current, 150 ns typical propagation delay, and operates across –40 °C to +125 °C ambient temperature in diesel/gasoline direct injection systems.

For engineers reviewing the AUIRS20162STR datasheet, AUIRS20162STR pinout, AUIRS20162STR application, or AUIRS20162STR equivalent, key selection criteria include its negative-logic CMOS Schmitt-trigger inputs, dV/dt immunity up to ±50 V/ns, undervoltage lockout thresholds (VCCUV+ = 4.3 V, VBSUV+ = 5.4 V), and guaranteed deadtime control between high-side turn-off and Vs recharge activation.

Technical Context

This driver implements a low-side input/high-side output topology with internal bootstrap supply management. Its dual undervoltage lockout (UVLO) circuitry independently monitors VCC (4.3 V rising threshold) and VBS (5.4 V rising threshold), each with hysteresis and sub-20 µs response time, ensuring robust operation during supply transients in automotive 12 V/24 V systems.

The device integrates a dedicated recharge transistor that connects VB to VS during low-side conduction, enabling reliable high-side gate drive in half-bridge configurations without external diode/capacitor networks. Its negative-logic IN– and RESET– inputs feature internal pull-up (IN–) and pull-down (RESET–) resistors (60–220 kΩ), eliminating need for external biasing components.

Key Specifications

Pinout & Package

Package: 8-lead SOIC (Small Outline Integrated Circuit), surface-mount, RoHS-compliant, automotive-qualified.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IRS2007MTRPBF and BTS716G, AUIRS20162STR uniquely combines 150 V offset capability, integrated Vs recharge, and automotive-grade UVLO-making it the only option among the three qualified for high-pressure diesel injector gate drive with minimal external components.

Availability

AUIRS20162STR is available at Aetrix Electronics and suitable for diesel direct injection, gasoline direct injection, solenoid actuator control, and brushed DC motor driver applications requiring stable component supply across automotive production lifecycles.

Supply support for AUIRS20162STR 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 industrial control ICs, with global manufacturing and qualification infrastructure.

AUIRS20162STR belongs to Infineon's automotive-qualified high-side gate driver product line, engineered specifically for robust, high-reliability control of solenoid and injector loads in harsh engine compartment environments.

FAQ

What is the function of the RESET– pin?

The RESET– pin is an active-low enable input that forces the HO output low and disables the internal Vs recharge transistor when asserted. It provides hardware-level fault recovery and safe shutdown capability, independent of the IN– control signal. Its internal 60–220 kΩ pull-down resistor eliminates need for external biasing, and propagation delay from RESET– assertion to HO deactivation is 0.15–0.35 µs.

Can AUIRS20162STR drive a 100 nC gate charge MOSFET?

No-AUIRS20162STR is rated for 250 mA peak source/sink current and optimized for MOSFETs with ≤20 nC total gate charge. Driving a 100 nC device would exceed safe operating limits, cause excessive rise/fall times (>1 µs), and risk thermal overstress. For larger gate charges, use a gate driver with ≥1 A peak current or add an external buffer stage.

Is external bootstrap capacitor required?

Yes-a minimum 1 µF ceramic capacitor must be placed between VB and VS pins to supply the high-side driver stage during switching. The datasheet specifies ΔVBS ≤ 210 mV drop under 3 µs test conditions with 1 µF CBS. Larger values (≥2.2 µF) improve stability under high-duty-cycle operation but require careful PCB layout to minimize loop inductance.

Does AUIRS20162STR support 3.3 V logic inputs?

No-it requires ≥4.4 V VCC for guaranteed logic operation, and its IN– and RESET– inputs are specified for 5 V logic levels with thresholds at 0.66×VCC (high) and 0.28×VCC (low). At VCC = 3.3 V, VINH = 2.18 V and VINL = 0.92 V, which falls outside standard 3.3 V logic margins and risks unreliable switching; a level shifter or 5 V supply rail is mandatory.