Infineon Technologies IR7304STRPBF

Overview

IR7304STRPBF from Infineon Technologies (formerly International Rectifier) is a 700V high-side/low-side dual-channel gate driver IC for N-channel IGBTs and MOSFETs in half-bridge configurations. It delivers ±60mA/±130mA peak output current, features integrated 100ns deadtime, shoot-through protection, and dual undervoltage lockout (VCC and VBS). It operates with bootstrap power supplies and supports 3.3V–15V logic inputs in motor drive inverters.

For engineers reviewing the IR7304STRPBF datasheet, IR7304STRPBF pinout, IR7304STRPBF application, or IR7304STRPBF equivalent, key selection criteria include 700V offset voltage tolerance, matched 220ns propagation delays, bootstrap-compatible floating channel design, and dual UVLO thresholds for robust high-voltage switching in three-phase inverter stages.

Technical Context

The IR7304STRPBF integrates two independent gate drivers - one referenced to COM (low-side), one referenced to VS (high-side floating) - with level-shifted logic inputs and latch-immune HVIC technology. Its internal shoot-through prevention logic enforces minimum 100ns deadtime between HO and LO transitions regardless of input timing skew.

Propagation delays (tON/tOFF = 220ns typ.) are tightly matched (≤50ns mismatch), enabling stable operation up to 500kHz switching frequencies. The device tolerates dVS/dt transients up to 50V/ns and supports VS offsets from –5V to +700V while maintaining logic integrity via isolated floating well architecture.

Key Specifications

Pinout & Package

IR7304STRPBF uses an 8-lead SOIC (SO8N) package with exposed pad for thermal enhancement. Pin 1 is LIN; pin 2 is HIN; pin 3 is VCC; pin 4 is COM; pin 5 is LO; pin 6 is VS; pin 7 is HO; pin 8 is VB. The package meets RoHS and lead-free requirements.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IRS21844STRPBF and UCC27712DR, IR7304STRPBF uniquely combines bootstrap-only operation, hardware-enforced 100ns deadtime, and 3.3V logic compatibility in a single SOIC-8 package - making it optimal for cost-sensitive, space-constrained inverter modules requiring minimal external components.

Availability

IR7304STRPBF is available at Aetrix Electronics and suitable for appliance motor drives, servo drives, and micro inverter drives requiring stable component supply, consistent SOIC-8 packaging, and long-term industrial lifecycle support.

Supply support for IR7304STRPBF 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, sensor, and automotive ICs, with roots in International Rectifier's high-voltage power solutions.

The IR7304STRPBF belongs to Infineon's legacy HVIC gate driver product line, designed specifically for cost-effective, bootstrap-powered half-bridge motor control in consumer and industrial inverters.

FAQ

What is the maximum allowable dVS/dt for reliable operation?

The IR7304STRPBF is rated for 50V/ns dVS/dt on the VS pin under recommended operating conditions. This specification ensures immunity to false turn-on during fast switching transitions in 600V-class inverters. Exceeding this rate may cause unintended high-side conduction or logic upset, especially when VBS is near UVLO threshold.

Can IR7304STRPBF drive SiC MOSFETs?

Yes - its 700V offset rating, 130mA sink current, and 200ns rise time support common 650V SiC MOSFETs. However, gate resistor selection must be optimized to limit dV/dt-induced ringing, and VBS supply stability must be ensured due to SiC's lower gate charge and faster switching.

Is external deadtime required when using IR7304STRPBF?

No - the device integrates hardware-enforced minimum 100ns deadtime between HO and LO outputs. This eliminates need for external RC networks or controller-based deadtime insertion, simplifying PCB layout and improving reliability in high-noise environments.

What is the minimum bootstrap capacitor value for 20kHz operation?

For 20kHz PWM with 50% duty cycle and 100ns deadtime, a 0.1µF ceramic capacitor (X7R, 25V) is sufficient when paired with a 10Ω bootstrap diode. Calculations assume 60mA average VBS quiescent current and ≤15V VBS drop per cycle - verified in IR Application Note AN-1001.