Infineon Technologies IRS2103SPBF

Overview

IRS2103SPBF from Infineon Technologies is a high-voltage, high-speed half-bridge gate driver IC designed to control N-channel MOSFETs and IGBTs in high-side/low-side configurations. It features 600 V floating channel capability, 130 mA/270 mA peak output current (HO/LO), 10–20 V gate drive supply range, 680 ns/150 ns typical turn-on/turn-off propagation delay, and internal 520 ns deadtime - enabling robust motor inverter and SMPS half-bridge stages.

For engineers reviewing the IRS2103SPBF datasheet, IRS2103SPBF pinout, IRS2103SPBF application, or IRS2103SPBF equivalent, key selection criteria include bootstrap-compatible floating channel operation up to +600 V, dV/dt immune logic inputs down to 3.3 V, matched propagation delays, cross-conduction prevention logic, and undervoltage lockout on both VCC and VBS rails.

Technical Context

The IRS2103SPBF integrates a high-voltage level-shifting circuit with latch-immune CMOS for reliable high-side gate driving at VS offsets up to +600 V. Its dual-channel architecture uses independent logic inputs (HIN/LIN) with internal deadtime insertion and shoot-through prevention logic to enforce non-overlapping gate drive timing.

It operates with separate supplies: fixed 10–20 V VCC for logic and low-side output, and floating 10–20 V VBS (referenced to VS) for high-side output. Propagation delays remain tightly matched (<60 ns skew) across temperature and supply voltage, and logic thresholds support 3.3 V, 5 V, and 15 V input compatibility without external level shifting.

Key Specifications

Pinout & Package

IRS2103SPBF is housed in an 8-lead SOIC package with standard surface-mount footprint and RoHS-compliant Pb-free finish. Thermal resistance R_thJA is 200 °C/W under board-mounted, still-air conditions.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IR2103S and FAN7382MX, IRS2103SPBF offers RoHS compliance, tighter thermal performance (200 °C/W), and integrated deadtime - making it optimal for new designs targeting cost-effective, compact, and production-ready half-bridge drivers without external timing components.

Availability

IRS2103SPBF is available at Aetrix Electronics and suitable for motor inverters, AC-DC PFC converters, induction heating systems, and DC-DC resonant converters requiring stable component supply and long-term manufacturability.

Supply support for IRS2103SPBF 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 electronics, and industrial control ICs, with global manufacturing and quality certification to ISO 9001 and IATF 16949.

The IRS2103SPBF belongs to Infineon's high-voltage gate driver product line, engineered specifically for cost-sensitive, high-reliability half-bridge applications in consumer, industrial, and appliance power electronics.

FAQ

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

The IRS2103SPBF is rated for up to 50 V/ns dV/dt on the VS pin under all operating conditions. This immunity is achieved via proprietary HVIC isolation and internal noise filtering, ensuring reliable operation even during fast-switching events in high-frequency inverters and resonant converters without false triggering.

Can IRS2103SPBF drive SiC MOSFETs?

Yes - IRS2103SPBF supports SiC MOSFETs with gate drive voltages between 10 V and 20 V and can deliver 130 mA/270 mA peak current. Its 680 ns/150 ns propagation delays and 70 ns/35 ns rise/fall times meet typical SiC gate drive timing requirements, though external gate resistors may be needed to dampen ringing in high-dV/dt layouts.

Is bootstrap capacitor sizing specified in the datasheet?

No fixed value is mandated, but typical design uses 0.1 µF to 1 µF ceramic capacitors between VB and VS. Sizing depends on switching frequency, duty cycle, and gate charge (Qg) of the driven MOSFET. For 100 kHz operation with Qg = 50 nC, a 0.22 µF X7R capacitor with low ESR ensures sufficient charge replenishment per cycle.

Does IRS2103SPBF support 3.3 V microcontroller interfaces directly?

Yes - its logic inputs (HIN/LIN) are fully compatible with 3.3 V CMOS levels: VIH(min) = 2.5 V and VIL(max) = 0.8 V at VCC = 10–20 V. No level-shifting circuitry is required, simplifying interface with modern low-voltage MCUs and DSPs in space-constrained designs.