International Test Instruments Corporation IR2131PBF

Overview

IR2131PBF from Infineon Technologies 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, 160 mA/360 mA peak output current, and matched 1.3 µs/0.6 µs typical propagation delays. It is used in 3-phase motor inverters for industrial AC drives.

For engineers reviewing the IR2131PBF datasheet, IR2131PBF pinout, IR2131PBF application, or IR2131PBF equivalent, key selection criteria include high-side floating capability up to 600 V, integrated over-current shutdown via ITRIP, undervoltage lockout on both VBS and VCC, fault reporting via open-drain FAULT, and 2.5 V logic compatibility across all six inputs.

Technical Context

The IR2131PBF employs proprietary HVIC (High-Voltage IC) technology enabling monolithic integration of level-shifted high-side drivers tolerant to dV/dt transients up to 50 V/ns. Its floating channel architecture supports bootstrap gate drive for N-channel MOSFETs/IGBTs in high-side configurations with VS ranging from –5 V to +600 V.

All six drivers feature matched propagation delay (typ. 1.3 µs turn-on / 0.6 µs turn-off), independent control, and out-of-phase output behavior relative to inputs. The device includes dedicated inputs for shutdown (SD), fault clear (FLT-CLR), and current-sense trip (ITRIP), with an open-drain FAULT output indicating any UVLO or over-current event.

Key Specifications

Pinout & Package

IR2131PBF is available in 28-lead SOIC (wide body, MS-013AE) and 28-lead PDIP packages. Pin assignments are identical across package variants per Infineon's lead definition table.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IR2131PBF, IR2130PBF trades integrated over-current detection for lower component count, while IRS2330JPbF reduces external parts via integrated bootstrap diodes but removes fault-clear flexibility-both require revalidation of timing margins and thermal performance in 3-phase inverter PCBs.

Availability

IR2131PBF is available at Aetrix Electronics and suitable for industrial AC motor drives, brushless DC inverters, solar microinverters, and uninterruptible power supplies requiring stable component supply and long-term production support.

Supply support for IR2131PBF 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 global manufacturing and quality certification to ISO 9001 and IATF 16949.

The IR21xx family targets high-reliability 3-phase power conversion systems, emphasizing robust high-side gate driving, fault resilience, and seamless integration with microcontroller-based motor control firmware.

FAQ

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

The IR2131PBF is rated for dV/dt transients up to 50 V/ns at the VS1,2,3 pins, verified under test conditions per Figure 2 of the datasheet. This specification ensures reliable operation when driving fast-switching IGBTs or SiC MOSFETs in high-frequency inverters without false triggering of the high-side level shifter.

Can IR2131PBF drive both MOSFETs and IGBTs?

Yes - the IR2131PBF is explicitly characterized for both N-channel MOSFETs and IGBTs. Its 160 mA/360 mA peak output current, 10–20 V VOUT range, and 1.3 µs/0.6 µs propagation delays meet typical gate drive requirements for devices up to 50 A/600 V, as validated in Infineon's application notes DT97-3 and AN-978.

How does the ITRIP input function during startup?

The ITRIP input includes a 400 ns blanking time (tbl) after each switching edge to suppress false over-current detection due to gate charge current spikes. During initial power-up, the ITRIP comparator remains inactive until VCC and VBS reach UVLO thresholds, ensuring stable initialization before current monitoring begins.

Is the FAULT output latched or auto-clearing?

The FAULT output is latched low upon any fault (UVLO or over-current) and remains asserted until cleared by a low-to-high transition on the FLT-CLR pin. This behavior is confirmed in the functional block diagram and timing waveforms (Figure 6), enabling deterministic system-level fault handling and diagnostics.