International Test Instruments Corporation IR2235PBF

Overview

IR2235PBF from Infineon Technologies is a high-voltage, high-speed 3-phase bridge driver IC with six independent gate drive channels (3 high-side + 3 low-side), rated for up to 1200 V offset voltage, ±420 mA/±200 mA output current, 750/700 ns typical turn-on/turn-off propagation delay, and 250 ns programmable deadtime. It integrates an analog current-sense amplifier and over-current shutdown for motor inverter stages in industrial AC drives.

For engineers reviewing the IR2235PBF datasheet, IR2235PBF pinout, IR2235PBF application, or IR2235PBF equivalent, key selection criteria include its 1200 V floating channel capability, matched propagation delays across all six drivers, 2.5 V logic compatibility, integrated current trip function, and fault-clear input for robust protection in high-reliability 3-phase power conversion systems.

Technical Context

The IR2235PBF implements three independent half-bridge drivers using proprietary HVIC technology, enabling monolithic construction with dV/dt-immune floating channels operating up to +1200 V referenced to COM. Each high-side channel features dedicated VBx/VSx supplies and matched propagation delay (750/700 ns typ.) to support synchronous PWM at frequencies exceeding 100 kHz.

It embeds a rail-to-rail operational amplifier (CA+, CA−, CAO) with 5–10 V/µs slew rate and 50–70 dB CMRR/PSRR for precise analog current feedback via external sense resistors. Over-current detection triggers simultaneous shutdown of all six outputs, signaled by open-drain FAULT with FLT-CLR recovery control.

Key Specifications

Pinout & Package

IR2235PBF is packaged in a 28-lead SOIC (wide body) with gull-wing leads, optimized for thermal dissipation and creepage in high-voltage PCB layouts. Pin assignments are validated per Infineon PD60107 revX datasheet and confirmed on Digi-Key and Mouser product pages.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IR2233PBF and IRS2330JPbF, the IR2235PBF uniquely combines 1200 V capability, integrated current-sense amplifier, and matched 6-channel timing-enabling compact, self-protected 3-phase inverter designs without external protection ICs or level shifters.

Availability

IR2235PBF is available at Aetrix Electronics and suitable for industrial AC motor drives, solar photovoltaic inverters, and uninterruptible power supplies requiring stable component supply and long-lifecycle support.

Supply support for IR2235PBF 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 drivers and silicon carbide solutions.

The IR223x family was designed specifically for ruggedized 3-phase inverter stages in industrial motor drives and renewable energy systems, emphasizing voltage robustness, timing precision, and integrated protection.

FAQ

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

The IR2235PBF is specified for >50 V/ns dV/dt immunity at VS1–VS3 pins under normal operating conditions. This is achieved through proprietary level-shifting circuitry and internal noise filtering. Operation beyond this limit may cause false triggering or latch-up; layout best practices (short traces, ground plane, local decoupling) are essential to maintain margin in 1200 V systems.

Can the CAO output drive an ADC input directly?

Yes - CAO provides rail-to-rail output (0–5.4 V) with 20 mV low-level saturation and 10 mA sink/source capability, making it compatible with most 12-bit SAR or sigma-delta ADCs. For optimal SNR, use a 100 Ω series resistor and 10 nF capacitor at the ADC input to suppress switching noise coupling from adjacent gate drive paths.

How is deadtime configured, and what is its minimum achievable value?

Deadtime is set externally using a resistor (RT) and capacitor (CT) between the DT pin and COM. With RT = 10 kΩ and CT = 100 pF, typical deadtime is 250 ns. Minimum deadtime is 100 ns (per datasheet), constrained by internal logic delay and propagation matching - not adjustable below this value even with zero external components.

Does the IR2235PBF support bootstrap and direct high-side supply simultaneously?

No - each high-side channel (VB1–VB3) must be driven exclusively by either bootstrap (capacitor + diode from LOx) or isolated DC-DC supply. Mixing methods on the same VBx pin risks latch-up or excessive leakage. The device supports concurrent use of different supply methods across phases (e.g., bootstrap on Phase A, isolated supply on Phases B/C), provided VSx references remain stable.