Infineon Technologies IR2114SS

Overview

IR2114SS from International Rectifier is a high-voltage half-bridge gate driver IC designed to control N-channel MOSFETs or IGBTs in switching power stages. It features 600 V floating channel capability, 2 A source / 3 A sink output drive strength, integrated desaturation detection, soft shutdown, and matched propagation delays (±75 ns max deadtime mismatch). It is used in motor drives, inverters, and SMPS where robust fault management and bootstrap-based high-side drive are required.

For engineers reviewing the IR2114SS datasheet, IR2114SS pinout, IR2114SS application, or IR2114SS equivalent, key selection considerations include its dual-stage turn-on for di/dt control, independent UVLO on VCC and VB–VS rails, 3 µs desat blanking time, CMOS-compatible 3.3 V FAULT/SD interface, and dedicated SY_FLT signaling for multi-phase fault coordination.

Technical Context

The IR2114SS implements a floating high-side driver with independent undervoltage lockout (UVLO) on both low-side (VCC) and high-side (VB–VS) supplies, each with 0.9 V hysteresis. Its desaturation detection circuit monitors DSH and DSL pins with 8.0 V threshold and 1.0 V hysteresis, triggering soft shutdown via SSDH/SSDL outputs after 3.3 µs blanking.

It supports synchronized multi-phase protection through SY_FLT and FAULT/SD bidirectional signaling, enabling coordinated shutdown across phases during cross-conduction or phase-to-phase faults. The two-stage turn-on (120–280 ns first stage, then second stage) allows precise di/dt control of power switches.

Key Specifications

Pinout & Package

IR2114SS is housed in a 24-lead SSOP (Shrink Small Outline Package) with exposed thermal pad, optimized for surface-mount assembly and thermal dissipation in medium-power applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar half-bridge gate driver applications.

Compared with IR2110S and IRS21844SPbF, the IR2114SS provides unique integrated desaturation detection, soft shutdown, and SY_FLT signaling-enabling autonomous, coordinated fault response without host processor intervention, critical for high-reliability industrial inverters.

Availability

IR2114SS is available at Aetrix Electronics and suitable for motor drive inverters, industrial UPS systems, solar microinverters, and induction heating power stages requiring stable component supply and long-term design-in support.

Supply support for IR2114SS 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

International Rectifier (now part of Infineon Technologies since 2015) was a pioneer in power semiconductor and gate driver IC design, specializing in high-efficiency, high-reliability solutions for industrial and automotive power conversion.

The IR21xx family was engineered specifically for robust half-bridge control in harsh electrical environments-emphasizing fault resilience, noise immunity, and bootstrap compatibility in medium-power motor drives and SMPS.

FAQ

What is the maximum allowable dV/dt on the VS pin?

The IR2114SS is rated for up to 50 V/ns dV/dt on the VS pin under normal operation. This specification ensures reliable high-side floating operation during fast-switching transitions in IGBT or MOSFET half-bridges without false triggering or latch-up. Exceeding this rate may compromise timing accuracy or cause unintended shutdown.

Can IR2114SS drive SiC MOSFETs?

Yes-its 2 A source / 3 A sink drive strength, 600 V offset rating, and fast propagation delays (440 ns typ) support common 650 V SiC MOSFETs. However, gate resistor selection must account for higher gate charge and lower threshold voltage; desat detection requires scaling of sense resistors to match SiC's lower VCE(sat).

How does the soft shutdown function interact with the FAULT/SD pin?

When desaturation is detected, IR2114SS asserts soft shutdown via SSDH/SSDL while simultaneously pulling FAULT/SD low. The FAULT/SD pin remains latched low until FLT_CLR is pulsed low. External logic can monitor FAULT/SD to initiate system-level response while SSDH/SSDL execute controlled gate discharge independently.

Is the IR2114SS pin-compatible with IR2113SS?

No-IR2113SS is a 16-pin SOIC device without desat inputs, SY_FLT, or soft shutdown outputs. IR2114SS uses a 24-pin SSOP package with entirely different pin mapping and enhanced protection features. Direct replacement is not possible without PCB redesign and firmware adaptation.