Half-bridge driver with integrated oscillator and 600 V bootstrap
The Infineon IR2153STRPBF is a half-bridge gate driver designed for N-channel MOSFETs in a synchronous half-bridge configuration. The high-side bootstrap is rated to 600 V maximum, making it suitable for DC bus voltages up to that level — typical for 240 VAC offline converters and 400 VDC telecom rectifiers. Supply voltage range is 10 V to 15.6 V, which matches standard 12 V or 15 V auxiliary rails.
NRND — plan for a replacement now
Any new BOM should target a pin-compatible successor; existing production lines should qualify a second source or replacement before an EOL notice arrives. The base product number IR2153 has multiple suffix variants (e.g., IR2153PBF in PDIP-8, IR2153STRPBF in SOIC-8); the SOIC-8 variant is the surface-mount option for automated assembly.
The gate type is N-Channel MOSFET, meaning the driver is optimized for driving N-channel devices on both the high side and low side — the bootstrap diode and capacitor are internal, but the external bootstrap capacitor must be sized per the datasheet recommendations.