International Test Instruments Corporation IRS2609DSPBF

Overview

IRS2609DSPBF from Infineon Technologies is a high-voltage, half-bridge gate driver IC designed for driving N-channel MOSFETs or IGBTs in synchronous buck, resonant, and motor control topologies. It integrates bootstrap diode, 600 V high-side level-shifting, 200 ns propagation delay matching, and shoot-through protection with 500 ns dead-time. Used in 48 V DC-DC converters and BLDC motor inverters.

For engineers reviewing the IRS2609DSPBF datasheet, IRS2609DSPBF pinout, IRS2609DSPBF application, or IRS2609DSPBF equivalent, key selection criteria include high-side floating capability up to 600 V, matched propagation delays between high- and low-side channels, integrated bootstrap diode, under-voltage lockout thresholds (V_BST = 9.2 V, V_CC = 10.5 V), and thermal shutdown at 150 °C.

Technical Context

The IRS2609DSPBF implements a dual-channel, non-inverting gate driver architecture with independent high-side and low-side outputs. Its level-shift circuit enables reliable operation with 600 V DC bus voltage and supports switching frequencies up to 1 MHz. The internal logic enforces interlock and dead-time insertion to prevent cross-conduction.

It features separate V_CC and V_BST supply monitoring with hysteresis, enabling robust start-up and fault recovery. The output drivers deliver 290 mA source / 600 mA sink peak current, supporting fast turn-on/turn-off of power devices with gate charges up to 100 nC.

Key Specifications

Pinout & Package

IRS2609DSPBF is housed in an 8-pin SOIC package with standard 1.27 mm pitch and exposed thermal pad (SOIC-8EP). Pin 1 is marked by notch or dot; pin numbering follows JEDEC MS-012.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IR2104SPBF and UCC27211D, IRS2609DSPBF uniquely combines 600 V level-shift, integrated bootstrap diode, and matched delays in one SOIC-8EP package-reducing component count and layout risk in space-constrained 400 V+ half-bridge designs.

Availability

IRS2609DSPBF is available at Aetrix Electronics and suitable for server VRMs, BLDC motor inverters, resonant LLC converters, and industrial UPS inverter stages requiring stable component supply and long-term manufacturability.

Supply support for IRS2609DSPBF 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 semiconductors, microcontrollers, and sensor solutions for automotive, industrial, and energy-efficient applications.

The IRS2609DSPBF belongs to Infineon's high-voltage gate driver product line, engineered specifically for robust, high-frequency half-bridge control in power conversion systems with demanding reliability and integration requirements.

FAQ

What is the maximum recommended switching frequency for IRS2609DSPBF?

The IRS2609DSPBF supports reliable operation up to 1 MHz, validated by Infineon's characterization data across temperature and supply voltage ranges. Performance at 1 MHz assumes proper PCB layout with minimized gate loop inductance and appropriate gate resistor selection to manage dV/dt and ringing. Thermal derating applies above 85 °C ambient.

Does IRS2609DSPBF require an external bootstrap diode?

No. IRS2609DSPBF integrates a high-voltage bootstrap diode internally, eliminating the need for an external diode in standard half-bridge configurations. This reduces component count, saves PCB area, and improves reliability by removing a common failure point in bootstrap networks.

How does the interlock function prevent shoot-through?

The IRS2609DSPBF uses hardware-based interlock logic that forces both HO and LO outputs low whenever the IN signal transitions while SD is inactive. It also inserts a minimum 500 ns dead-time between high-side turn-off and low-side turn-on (and vice versa), independent of external timing circuits or MCU firmware delays.

Can IRS2609DSPBF drive IGBTs directly?

Yes - IRS2609DSPBF can drive discrete IGBTs with gate charges ≤100 nC at typical gate-emitter voltages (±15 V). Its 290 mA source / 600 mA sink capability ensures adequate turn-on speed; however, external negative gate bias or active Miller clamp may be needed for high-dV/dt IGBT applications to prevent false turn-on.