The Mitsubishi PS21865-AP is a fully integrated Intelligent Power Module combining six IGBT switches with onboard gate drive circuitry, undervoltage lockout, overcurrent protection, and thermal shutdown into a single molded package. This level of integration dramatically simplifies inverter board design by eliminating discrete gate drive components and reducing the risk of shoot-through events. The PS21865-AP is engineered for reliable, high-efficiency switching performance in compact, cost-sensitive power conversion systems where board space and component count are critical design constraints.

The PS21865-AP is widely deployed in variable-frequency drives (VFDs) for HVAC compressors, pumps, and fans, as well as in servo drives, industrial robotics, washing machine inverters, and small to mid-range three-phase motor control platforms. Its self-contained protection stack — including fault output signaling — makes it a preferred choice for OEM drive designers and field maintenance engineers replacing failed modules in existing equipment. The part is also found in elevator controls, solar micro-inverters, and uninterruptible power supply (UPS) systems requiring compact three-phase inversion.

Quick Reference: PS21865-AP

Key Features of the PS21865-AP:

• Fully integrated three-phase IGBT inverter bridge with onboard bootstrap gate drive circuitry, eliminating the need for external isolated gate drive supplies on the high-side switches
• Built-in protection functions including overcurrent (OC) shutdown, undervoltage lockout (UVLO) on both high- and low-side supplies, and overtemperature (OT) protection with fault output pin
• Low-loss IGBT chip technology optimized for PWM switching frequencies typical of motor drive and inverter applications
• Compact, application-specific package with defined creepage and clearance distances suitable for industrial-grade inverter PCB layouts
• Fault signal output pin enables direct interface to microcontroller or DSP fault-handling routines without additional signal conditioning
• Compatible with standard three-phase inverter reference designs used in consumer and industrial variable-speed motor drive platforms

With a current factory lead time of 41 weeks from Mitsubishi, procurement teams and maintenance engineers supporting active production lines or equipment repairs cannot afford to wait. Unplanned downtime caused by a failed IPM in a VFD or servo drive can cost thousands of dollars per hour in lost production. ATI specializes in exactly this gap — maintaining inventory of hard-to-find, long-lead-time, and obsolete power semiconductors including Mitsubishi Intelligent Power Modules so you can restore equipment fast or keep safety stock on the shelf without tying capital up in a factory backorder queue.

ATI Accurate Technology is based in Palmetto, Florida and stocks new OEM power semiconductors including IGBTs, IPMs, thyristors, diodes, and rectifier modules. Orders placed before 5PM EST ship same day. Whether you need a single replacement PS21865-AP or volume quantities for production, our team is ready to help. Call 239-734-7566 or email sales@igbts.us for pricing, volume discounts, and availability confirmation.