Infineon Technologies IRS2103PBF

Overview

IRS2103PBF from Infineon Technologies is a high-voltage, high-speed half-bridge gate driver IC designed to independently control N-channel MOSFETs or IGBTs in high-side and low-side configurations. It supports up to 600 V offset voltage, delivers ±130 mA / +270 mA peak output current, features matched 680 ns / 150 ns turn-on/turn-off propagation delays, and integrates internal deadtime (520 ns typ.) for shoot-through prevention - widely used in motor inverters and SMPS half-bridge stages.

For engineers reviewing the IRS2103PBF datasheet, IRS2103PBF pinout, IRS2103PBF application, or IRS2103PBF equivalent, key selection criteria include floating channel operation up to 600 V, 10–20 V gate drive supply range, 3.3 V/5 V logic compatibility, undervoltage lockout thresholds (8.2 V typical), and cross-conduction prevention logic with matched propagation delay.

Technical Context

The IRS2103PBF employs proprietary HVIC technology to enable robust monolithic high-side floating channel operation referenced to VS, with dV/dt immunity up to 50 V/ns and tolerance to negative transients. Its internal level-shifting architecture ensures reliable signal transmission across the high-side isolation barrier without external bootstrap diode dependency beyond standard capacitor-based biasing.

It implements dedicated pulse generation with integrated deadtime insertion (400–650 ns), UV detection on VCC, and independent logic inputs (HIN in-phase with HO, LIN out-of-phase with LO). Propagation delays are specified across full VS range (0–600 V) and temperature (−40°C to +125°C), with matching ≤60 ns between channels.

Key Specifications

Pinout & Package

IRS2103PBF is housed in an 8-lead PDIP package with through-hole mounting and RoHS-compliant lead finish. Pin assignments are electrically identical to the SOIC variant (IRS2103SPBF), enabling drop-in layout reuse where thermal and mechanical constraints permit.

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, IRS2103PBF offers superior thermal performance in through-hole designs, integrated hardware deadtime, and higher peak sink current - making it optimal for industrial motor drives where reliability and layout simplicity are prioritized over miniaturization.

Availability

IRS2103PBF is available at Aetrix Electronics and suitable for motor inverters, induction heating systems, industrial SMPS, and UPS inverter modules requiring stable component supply across extended production lifecycles.

Supply support for IRS2103PBF 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 IRS21xx family targets high-reliability half-bridge and full-bridge gate driving in industrial and appliance applications, emphasizing robustness against voltage transients, wide supply range, and integrated protection features.

FAQ

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

The IRS2103PBF is rated for dV/dt immunity up to 50 V/ns on the VS pin, verified under standard test conditions per Infineon's characterization. This specification ensures reliable operation during fast-switching events in hard-switched topologies without false triggering of the high-side driver stage.

Can IRS2103PBF drive IGBTs directly?

Yes - IRS2103PBF supports gate drive for both N-channel MOSFETs and IGBTs, with its 10–20 V output range and 270 mA sink current meeting typical IGBT gate requirements. It is commonly used with 600 V IGBTs in induction cooktops and UPS inverters where gate charge Q_g ≤ 100 nC.

Is an external bootstrap diode required?

No external diode is strictly required if using a low-leakage ceramic bootstrap capacitor and ensuring V_BS does not fall below 10 V during operation. However, a Schottky diode (e.g., 1N5819) is recommended to prevent reverse current flow and improve startup reliability in high-duty-cycle applications.

What is the minimum recommended deadtime for safe operation?

The internal deadtime is fixed at 400–650 ns (typ. 520 ns), which is sufficient for most 20–100 kHz half-bridge applications with 600 V devices. For ultra-high-frequency designs (>300 kHz) or high-inductance loads, external gate resistors may be added to increase effective deadtime, but the IC's internal logic prevents overlap regardless.