Infineon Technologies IR21365STRPBF

Overview

IR21365STRPBF from Infineon Technologies is a high-voltage, high-speed 3-phase bridge driver IC with three independent half-bridge gate drivers for N-channel MOSFETs or IGBTs. It operates up to +600V offset, features 12–20V gate drive supply range, 400ns/380ns typical turn-on/turn-off propagation delay, and integrated over-current shutdown with externally programmable fault-clear delay via RCIN. It is used in industrial motor inverters driving BLDC or PMSM motors.

For engineers reviewing the IR21365STRPBF datasheet, IR21365STRPBF pinout, IR21365STRPBF application, or IR21365STRPBF equivalent, key selection criteria include its 600V floating channel capability, 3.3V logic compatibility, matched propagation delays across all six outputs, undervoltage lockout thresholds (11.2V/11.0V), and 4.3V current-trip threshold - critical for reliable inverter protection in variable-speed drives.

Technical Context

The IR21365STRPBF integrates three isolated high-side level shifters with bootstrap operation, each supporting up to +600V VS offset referenced to COM. Its proprietary HVIC monolithic construction enables robust operation under high dV/dt transients without false triggering.

It implements cross-conduction prevention logic per channel, ensures low-side outputs are out-of-phase with inputs, and provides an open-drain FAULT signal that latches on over-current or UV events - cleared only after RCIN voltage exceeds 8V, with timing set by external R-C network.

Key Specifications

Pinout & Package

IR21365STRPBF is housed in a 28-lead SOIC package with exposed thermal pad (RoHS-compliant, lead-free). Pin assignments follow industry-standard 3-phase driver layout optimized for PCB routing and thermal management.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IR21363STRPBF and IR21367STRPBF, the IR21365STRPBF offers balanced performance: moderate speed (400ns/380ns), robust 4.3V current trip for noisy environments, and proven reliability in industrial 3-phase inverters - making it ideal for cost-sensitive, medium-power applications where noise immunity and ease of design are critical.

Availability

IR21365STRPBF is available at Aetrix Electronics and suitable for industrial motor inverters, BLDC motor drives, PMSM servo drives, and appliance motor controllers requiring stable component supply and long-term lifecycle support.

Supply support for IR21365STRPBF 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 IR2136x family targets high-reliability 3-phase motor control systems, emphasizing rugged HVIC integration, noise-immune timing, and flexible fault management for industrial and appliance applications.

FAQ

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

The IR21365STRPBF is rated for up to 50 V/ns dV/dt at VS1–VS3 pins without false triggering, enabled by internal level-shifter design and noise filtering. This specification ensures reliable operation during fast-switching transitions in 600V bus systems, especially with SiC or fast IGBTs, and eliminates need for external snubbers in most cases.

How does the RCIN pin determine fault-clear timing?

The RCIN pin uses an internal comparator with 8V threshold and 3V hysteresis; charging an external capacitor through a resistor sets the time until FAULT clears. With R = 2 MΩ and C = 1 nF, t_FLTCLR = 1.3–2 ms. This allows designers to tune recovery time to avoid nuisance tripping during startup or transient overloads while maintaining safety.

Can IR21365STRPBF drive both MOSFETs and IGBTs?

Yes - the IR21365STRPBF delivers ±200 mA peak source/sink current per output, sufficient for gate charge/discharge of typical 30A–60A IGBTs and 50A–100A N-channel MOSFETs used in 3-phase inverters. Its 12–20V VBS range supports standard gate drive voltages, and the 600V VS rating accommodates both device types in high-voltage topologies.

Is there internal protection against shoot-through?

Yes - the IR21365STRPBF includes hardware-level dead-time insertion and cross-conduction prevention logic per channel. When HIN and LIN overlap, the outputs are forced into safe state (HO = LO = low) for ≥220 ns. This eliminates reliance on MCU-level dead-time generation and prevents destructive shoot-through even under firmware faults or timing jitter.