Infineon Technologies IRS21064PBF

Overview

IRS21064PBF from Infineon Technologies is a high-voltage, high-speed dual-channel gate driver IC for N-channel MOSFETs and IGBTs, featuring independent high-side (HO) and low-side (LO) outputs referenced to floating (VS) and logic (VSS/COM) grounds. It supports up to 600 V operation, offers 220 ns/200 ns turn-on/turn-off propagation delays, and accepts 3.3 V/5 V/15 V logic inputs - used in half-bridge motor drives and SMPS inverters.

For engineers reviewing the IRS21064PBF datasheet, IRS21064PBF pinout, IRS21064PBF application, or IRS21064PBF equivalent, key selection criteria include bootstrap-compatible high-side drive capability, matched propagation delay (<30 ns), dual UVLO (VCC/VB), logic-ground separation (VSS), and SOIC-14 package thermal performance (R_thJA = 120 °C/W).

Technical Context

The IRS21064PBF integrates a high-voltage level shifter and latch-immune CMOS logic to enable robust floating channel operation up to +600 V with dV/dt immunity up to 50 V/ns. Its architecture includes independent UVLO detection on both VCC and VB supplies, pulse filtering for noise rejection, and matched internal delays between HIN→HO and LIN→LO paths.

Unlike the IRS2106, the IRS21064 features dedicated VSS logic ground (separate from COM), enabling ±5 V offset tolerance between logic and power grounds. It lacks programmable deadtime but guarantees <30 ns delay matching across temperature and supply voltage variations (10–20 V).

Key Specifications

Pinout & Package

IRS21064PBF is housed in a 14-lead SOIC package with exposed pad (RoHS-compliant Pb-free finish), rated for 125 °C maximum junction temperature and 300 °C peak soldering temperature.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IRS21064PBF, IRS21844PBF adds design flexibility via programmable deadtime but requires modified control logic, while UCC27211D trades ground separation for speed and footprint - making IRS21064PBF optimal for cost-sensitive, thermally constrained industrial half-bridges requiring robust noise immunity.

Availability

IRS21064PBF is available at Aetrix Electronics and suitable for motor control half-bridges, induction cooktop inverters, and industrial UPS inverters requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for IRS21064PBF 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 MCUs, and industrial gate drivers - with over 30 years of HVIC process leadership.

The IRS21xxx family targets high-reliability, high-voltage gate driving in industrial motor drives and power conversion - designed specifically for bootstrap-based half-bridge topologies with strict noise immunity and timing precision requirements.

FAQ

What is the purpose of the separate VSS pin on IRS21064PBF?

VSS serves as the dedicated logic ground reference for HIN/LIN inputs and internal UVLO comparators, electrically isolated from the power return COM. This ±5 V offset tolerance allows clean interfacing with isolated digital isolators or level-shifted MCU outputs without additional circuitry - a key distinction from IRS2106 which shares COM for all grounds.

Can IRS21064PBF drive SiC MOSFETs directly?

Yes - its 600 V absolute rating, 290 mA HO source / 600 mA LO sink capability, and 100–220 ns switching times support common 650 V SiC MOSFETs in hard-switched topologies. However, gate resistor selection must account for SiC's lower Q_g to avoid excessive di/dt; layout must minimize parasitic inductance on HO/VS paths.

Does IRS21064PBF include built-in deadtime generation?

No - IRS21064PBF has no internal deadtime insertion logic. It provides in-phase outputs (HO follows HIN, LO follows LIN), so external deadtime must be implemented in the PWM controller or gate driver logic. For integrated deadtime, consider IRS21844PBF or IRS21864PBF instead.

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

The datasheet specifies 50 V/ns maximum dV/dt on VS for the 8-lead PDIP version and implicitly confirms equivalent immunity for SOIC-14 under standard test conditions. This rating ensures reliable operation during fast switching transitions in 400 V DC bus applications without false level-shifter triggering.