Infineon Technologies IR2131SPBF

Overview

IR2131SPBF from Infineon Technologies (formerly International Rectifier) is a high-voltage, high-speed 3-phase gate driver IC with independent high-side and low-side outputs. It integrates six drivers (3 high-side floating channels up to +600V offset, 3 low-side referenced to COM), 10–20V gate drive supply range, undervoltage lockout on all channels, over-current shutdown via external sense resistor, and open-drain FAULT output. Used in 3-phase motor inverters driving IGBTs or N-channel MOSFETs.

For engineers reviewing the IR2131SPBF datasheet, IR2131SPBF pinout, IR2131SPBF application, or IR2131SPBF equivalent, key selection criteria include matched propagation delay (1.3 µs ton / 0.6 µs toff), ±160 mA / +360 mA peak output current, 600 V offset tolerance, 2.5V logic compatibility, and integrated fault-clear and shutdown inputs.

Technical Context

The IR2131SPBF employs proprietary HVIC technology for monolithic high-voltage isolation between floating and grounded domains. Its three high-side channels use bootstrap operation with dV/dt immunity up to 50 V/ns and operate with VS offset from –5 V to +600 V relative to COM.

All six logic inputs (HIN1–3, LIN1–3, SD, FLT-CLR, ITRIP) are CMOS/LSTTL-compatible down to 2.5 V, and feature internal 5.2 V zener clamping. The FAULT output is open-drain, active-low, and latched until cleared by FLT-CLR.

Key Specifications

Pinout & Package

IR2131SPBF is available in 28-lead SOIC (wide body, MS-013AE) package with exposed pad for thermal enhancement. Pin assignments are identical across IR2131J, IR2131S, and IR2131SPBF variants.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IRS2330JPbF and UCC27211D, IR2131SPBF uniquely combines configurable analog over-current trip (ITRIP), latched FAULT with hardware clear (FLT-CLR), and per-channel UVLO - making it optimal for safety-critical motor drives requiring deterministic fault handling.

Availability

IR2131SPBF is available at Aetrix Electronics and suitable for industrial motor inverters, appliance BLDC modules, solar microinverter stages, and EV auxiliary power systems requiring stable component supply and long-term manufacturability.

Supply support for IR2131SPBF 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 deep expertise in high-voltage gate driver design and ruggedized HVIC process technology.

The IR2131SPBF belongs to Infineon's legacy IR21xx family of high-voltage gate drivers, engineered specifically for reliable 3-phase inverter control in industrial motor drives and power conversion systems demanding high noise immunity and fault resilience.

FAQ

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

The IR2131SPBF is rated for up to 50 V/ns dV/dt on its high-side floating supply returns (VS1–3). This specification ensures reliable operation during fast-switching events in 600 V bus applications without false triggering of level-shift circuitry or loss of high-side gate drive.

Can IR2131SPBF drive both IGBTs and MOSFETs?

Yes - the IR2131SPBF is designed to drive either N-channel IGBTs or MOSFETs. Its ±160 mA / +360 mA peak output current and 10–20 V gate supply range accommodate typical gate charge requirements for devices up to ~50 A I_C (IGBT) or ~100 A I_D (MOSFET) in 3-phase configurations.

How does the ITRIP input function during normal operation?

The ITRIP input monitors voltage across an external current-sense resistor. When this voltage crosses the programmable 250–600 mV threshold, the device initiates a 400–1000 ns shutdown sequence, disabling all six outputs and asserting the FAULT pin. A 400 ns blanking window prevents false trips during turn-on transients.

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

Yes - the FAULT output is latched active-low upon any fault condition (UVLO, over-current, or SD assertion). It remains asserted until the FLT-CLR pin is pulled low for ≥400 ns, after which all outputs resume normal operation if fault conditions have cleared.