Infineon Technologies IR2135STR

Overview

IR2135STR 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 600V offset voltage, 200 mA/420 mA peak output current, 750 ns/700 ns typical 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 IR2135STR datasheet, IR2135STR pinout, IR2135STR application, or IR2135STR equivalent, key selection criteria include floating channel dV/dt immunity, bootstrap-compatible high-side operation, undervoltage lockout per supply rail, fault-clear logic timing, and matched propagation delays across all six channels.

Technical Context

The IR2135STR implements three independent half-bridge drivers using proprietary HVIC technology, enabling monolithic high-side floating operation up to +600V referenced to COM. Each high-side channel uses a self-contained level-shifting circuit tolerant to negative transients and immune to dV/dt-induced false triggering.

It features a dedicated current-sense amplifier (CA+, CA−, CAO) with 5–10 V/µs slew rate and ±30 mV input offset, plus a programmable over-current trip comparator tied to ITRIP. Shutdown (SD) and fault-clear (FLT-CLR) inputs operate with negative logic and internal 5.2V zener clamping.

Key Specifications

Pinout & Package

IR2135STR 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 gate driver applications.

Compared with IR2133STR and IRS2330JPbF, the IR2135STR uniquely combines 600 V floating capability, matched propagation delay, and integrated current-sense amplifier-making it optimal for closed-loop motor control where real-time phase current monitoring is essential.

Availability

IR2135STR is available at Aetrix Electronics and suitable for industrial AC motor drives, brushless DC controllers, solar inverter DC–AC stages, and uninterruptible power supplies requiring stable component supply and long-term production continuity.

Supply support for IR2135STR 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 IR21xx family was designed specifically for ruggedized 3-phase inverter gate driving in harsh industrial environments-emphasizing dV/dt immunity, integrated protection, and layout simplicity.

FAQ

What is the maximum allowable dV/dt on the VS pins of the IR2135STR?

The IR2135STR is specified for 50 V/ns dV/dt immunity on its VS1–VS3 pins, verified under worst-case conditions with VB = 15 V and TA = 25°C. This rating ensures reliable high-side level shifting during fast-switching transitions in 600 V bus applications without false turn-on.

Can the IR2135STR drive both MOSFETs and IGBTs?

Yes-the IR2135STR supports both N-channel MOSFETs and IGBTs via its 10–20 V adjustable VOUT range and ±200 mA/±420 mA peak output current. Its 750 ns/700 ns propagation delay and 250 ns deadtime are optimized for switching speeds up to 200 kHz with either device type.

How does the ITRIP blanking time prevent false over-current trips during switching transitions?

The IR2135STR incorporates a 400 ns internal ITRIP blanking window after each HO/LO transition, during which the current-sense comparator is disabled. This suppresses transient spikes from Miller capacitance coupling and gate drive ringing, ensuring only sustained over-current faults trigger shutdown.

Is the FAULT output latched, and how is it cleared?

Yes-the FAULT output is latched low upon undervoltage lockout or over-current detection. It remains asserted until FLT-CLR receives a valid low-to-high transition (with ≥310 ns input filter delay), after which the internal latch resets and FAULT returns high-impedance-requiring an external pull-up resistor for active-high signaling.