Infineon Technologies IRS21064SPBF

Overview

IRS21064SPBF from Infineon Technologies is a high-voltage, high-speed dual-channel gate driver IC for N-channel MOSFETs and IGBTs, featuring independent high-side (up to +600 V) and low-side outputs with matched 220/200 ns propagation delays, 10–20 V gate drive supply range, and 3.3 V/5 V/15 V logic-compatible inputs. It enables half-bridge motor control in industrial inverters.

For engineers reviewing the IRS21064SPBF datasheet, IRS21064SPBF pinout, IRS21064SPBF application, or IRS21064SPBF equivalent, key selection criteria include bootstrap-capable floating channel operation, VSS-referenced logic ground, dV/dt immunity up to 50 V/ns, and undervoltage lockout on both channels.

Technical Context

The IRS21064SPBF integrates a high-voltage level shifter and latch-immune CMOS logic to support robust high-side switching at VS = −5 V to +600 V. Its dual independent input structure (HIN/LIN) eliminates internal deadtime circuitry, requiring external timing control.

It features separate logic ground (VSS) and power return (COM), enabling ±5 V ground offset tolerance. Propagation delay matching (≤30 ns) and low di/dt gate drive enhance noise immunity in high-frequency bridge applications.

Key Specifications

Pinout & Package

IRS21064SPBF is housed in a 14-lead SOIC package with wide creepage and isolated high-side channel layout. Pin assignments are validated per Infineon PD60246 datasheet.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IRS21064SPBF, IRS21844SPBF adds programmable deadtime but removes logic ground isolation, while UCC27211D sacrifices 600 V capability and noise resilience for integration and cost - making IRS21064SPBF optimal for high-reliability, high-voltage industrial motor control.

Availability

IRS21064SPBF is available at Aetrix Electronics and suitable for industrial motor drives, solar inverters, induction heating systems, and UPS power stages requiring stable component supply and long-term design-in support.

Supply support for IRS21064SPBF 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 IRS2106x family targets high-reliability half-bridge gate driving in harsh industrial environments, emphasizing dV/dt immunity, ground separation, and bootstrap flexibility over integrated timing logic.

FAQ

What is the purpose of the VSS pin on IRS21064SPBF?

VSS is a dedicated logic ground pin that isolates digital input circuitry from the noisy power return (COM). This separation improves noise immunity and allows ±5 V offset between logic and power grounds, critical in systems with large ground potential differences.

Can IRS21064SPBF drive SiC MOSFETs?

Yes - its 10–20 V gate drive supply range, 290 mA high-side source current, and 35 ns fall time meet typical SiC gate requirements. However, external negative turn-off voltage or active Miller clamp may be needed for robust hard-switching above 100 kHz.

Is bootstrap operation mandatory for the high-side channel?

Yes - the floating channel requires bootstrap biasing via VB and VS pins. No isolated DC-DC supply is needed, but a bootstrap capacitor and diode must be placed externally between VB and VS to sustain high-side conduction during continuous PWM.

How does IRS21064SPBF differ from IRS2106SPBF?

IRS21064SPBF adds VSS (logic ground) and separates COM (power return), enabling ground offset tolerance. IRS2106SPBF shares COM for both logic and power ground, limiting noise resilience in high-dV/dt applications.