Infineon Technologies IR2235STRPBF

Overview

IR2235STRPBF from Infineon Technologies is a high-voltage, high-speed 3-phase bridge driver IC with six independent gate drive outputs (three high-side and three low-side), rated for up to 1200 V offset voltage, ±420 mA/±200 mA output current, 750 ns/700 ns typical turn-on/turn-off propagation delay, and 250 ns matched deadtime. It integrates an analog current-sense amplifier and over-current shutdown for motor inverter stages in industrial AC drives.

For engineers reviewing the IR2235STRPBF datasheet, IR2235STRPBF pinout, IR2235STRPBF application, or IR2235STRPBF equivalent, key selection criteria include 1200 V floating channel capability, integrated current-sense amplifier with 5–10 V/µs slew rate, 2.5 V logic compatibility, undervoltage lockout on both VCC and VB supplies, and fault-clear functionality via FLT-CLR pin.

Technical Context

This driver uses proprietary HVIC (High-Voltage IC) monolithic technology to support bootstrap-fed high-side operation up to 1200 V with dV/dt immunity. Its three half-bridge channels feature matched propagation delays (±50 ns typical), independent UVLO per supply rail, and synchronized shutdown across all six outputs upon ITRIP or SD assertion.

The integrated operational amplifier accepts differential input across CA+ and CA−, delivers rail-to-rail output (CAO), and enables real-time analog current feedback using an external sense resistor. Fault detection triggers open-drain FAULT output (active-low) and disables all outputs until cleared by FLT-CLR.

Key Specifications

Pinout & Package

IR2235STRPBF is housed in a 28-lead SOIC (wide-body) package with gull-wing leads, optimized for thermal dissipation and creepage in high-voltage motor control PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 3-phase high-voltage gate driver applications.

Compared with IRS2330MTRPBF and UCC27211DR, IR2235STRPBF uniquely combines 1200 V capability, integrated current-sense amplifier, and coordinated 3-phase fault management-enabling single-chip motor inverter control without external protection logic or signal conditioning.

Availability

IR2235STRPBF is available at Aetrix Electronics and suitable for industrial AC motor drives, solar inverters, uninterruptible power supplies, and electric vehicle onboard chargers requiring stable component supply across multi-year production cycles.

Supply support for IR2235STRPBF 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, and industrial control ICs, with leadership in high-voltage gate driver innovation since the 1990s.

The IR2235STRPBF belongs to Infineon's high-voltage IC (HVIC) product line, designed specifically for robust, integrated 3-phase inverter control in harsh industrial environments with high dv/dt and wide temperature ranges.

FAQ

What is the maximum allowable dV/dt at the VS pins?

The IR2235STRPBF is specified as dV/dt immune per its datasheet, with guaranteed operation under transient conditions up to 50 V/ns at the VS pins. This immunity is achieved through internal level-shifting circuitry and layout hardening in the HVIC process, enabling reliable operation in noisy inverter leg environments without external snubbers.

Can the CAO output drive a microcontroller ADC directly?

Yes - CAO provides rail-to-rail output (0–5 V) with ±20 mV low-level accuracy and 5.4 V high-level compliance, matching standard 5 V-tolerant SAR ADC inputs. Its 7 mA source/sink capability eliminates need for buffer op-amps when interfacing to MCUs like STM32F3/F4 series with 12-bit internal ADCs.

How does the ITRIP blanking time function during startup?

The 400 ns ITRIP blanking window is automatically activated on every rising edge of HIN/LIN inputs, suppressing false overcurrent detection during gate charge injection and device turn-on transients. It is not user-programmable but is internally synchronized to switching edges, ensuring consistent noise immunity across all operating conditions.

Is the FLT-CLR pin debounced internally?

No - FLT-CLR is a raw CMOS input with no internal filtering or debounce. External RC filtering (e.g., 10 kΩ + 100 pF) is recommended when driven by mechanical switches or slow GPIOs to prevent spurious fault clearing. The internal response time is ≤850 ns, matching propagation delay specifications.