Infineon Technologies IR2131

Overview

IR2131 from Infineon Technologies is a high-voltage, high-speed 3-phase gate driver IC with independent high-side and low-side outputs, rated for 600 V offset voltage, ±160 mA / +360 mA output drive capability, and 10–20 V gate supply range. It integrates undervoltage lockout, over-current shutdown, matched propagation delay (1.3 µs turn-on, 0.6 µs turn-off), and 2.5 V logic compatibility - used in motor inverters driving N-channel IGBTs or MOSFETs in industrial AC drives.

For engineers reviewing the IR2131 datasheet, IR2131 pinout, IR2131 application, or IR2131 equivalent, key selection considerations include floating channel dV/dt immunity up to 50 V/ns, fault-clear timing (400–1200 ns), ITRIP threshold accuracy (250–600 mV), and thermal resistance of 78 °C/W in SOIC package.

Technical Context

The IR2131 employs proprietary HVIC technology to enable monolithic high-side floating channels capable of operating at VS = +600 V relative to COM while maintaining logic-level input compatibility down to 2.5 V. Its six independent drivers are split into three matched high-side (HO1–HO3) and three low-side (LO1–LO3) channels, each with identical propagation delay and dead-time control.

It features dual undervoltage lockout (VBSUV: 7.8–9.2 V; VCCUV: 7.8–9.2 V), an open-drain FAULT output signaling over-current or UVLO events, and a dedicated ITRIP input with blanking time (400 ns) and trip delay (400–1000 ns). Shutdown (SD) and fault-clear (FLT-CLR) inputs support system-level protection coordination.

Key Specifications

Pinout & Package

Available in 28-lead SOIC (wide body, MS-013AE), 28-lead PDIP (MS-011AB), and 44-lead PLCC (w/o leads 12). Thermal resistance is 78 °C/W (SOIC), 83 °C/W (PDIP), and 63 °C/W (PLCC).

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 IR2130 and IRS2330, the IR2131 offers the only combination of integrated ITRIP analog input, open-drain FAULT output, and matched 6-channel timing - making it optimal for safety-critical inverters requiring autonomous over-current shutdown without MCU intervention.

Availability

IR2131 is available at Aetrix Electronics and suitable for industrial motor inverters, BLDC controllers, solar microinverters, and UPS inverter stages requiring stable component supply and long-term lifecycle support.

Supply support for IR2131 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 SiC solutions.

The IR2131 belongs to Infineon's legacy HVIC (High-Voltage IC) product line, designed specifically for ruggedized 3-phase motor drive applications where high dV/dt immunity, integrated protection, and bootstrap-based high-side drive are essential.

FAQ

What is the minimum recommended bootstrap capacitor value for IR2131 in a 20 kHz motor drive?

A 0.22 µF ceramic capacitor with X7R dielectric and ≤100 mΩ ESR is recommended for 20 kHz operation with 15 V VCC and 1 A peak gate current. This ensures <1% droop per cycle and maintains VBS above 8.2 V during continuous conduction. Larger values (e.g., 0.47 µF) improve margin under high-duty-cycle conditions.

Can IR2131 drive SiC MOSFETs directly?

Yes, but with design constraints: its 160 mA source/360 mA sink capability supports SiC devices with Qg ≤ 25 nC at 20 kHz. Gate resistors must be selected to limit dv/dt to <30 V/ns, and VCC must be regulated to 15 V ±5% to avoid exceeding VOH/VOL limits under fast switching.

How does the ITRIP input interact with the FAULT output during over-current events?

When ITRIP exceeds its positive-going threshold (250–600 mV), the internal latch triggers within 400–1000 ns, forcing all six outputs low and pulling FAULT low. FAULT remains low until FLT-CLR is pulsed low for >100 ns, after which outputs resume normal operation if ITRIP has fallen below the negative-going threshold (200–550 mV).

Is IR2131 compliant with RoHS and REACH regulations?

Yes - the IR2131J(S) and PbF variants are fully RoHS-compliant and REACH-conformant. Lead-free versions (marked "PbF") meet JEDEC J-STD-020 moisture sensitivity level MSL3 and support standard reflow profiles up to 260 °C peak.