What You Need to Know About the PSS15SA2FT

What You Need to Know About the PSS15SA2FT

The Mitsubishi PSS15SA2FT is a 1200V, 15A intelligent power module made for three-phase inverter motor drives. PSS15SA2FT combines IGBTs, drivers, and protections in one compact package, making it easier to design reliable and efficient systems. This article explains its features, ratings, circuit design, advantages, issues with fixes, applications, and comparisons with other models.

PSS15SA2FT Overview
The Mitsubishi PSS15SA2FT is a 1200V Dual Inline Package Intelligent Power Module (DIPIPM) designed for efficient and reliable motor drive applications. With a current rating of ±15A (±30A peak), 2500Vrms isolation voltage, and a compact large transfer-molded package, it delivers both power and protection in one solution. Built with Mitsubishi's 6th-generation CSTBT IGBT technology and integrated bootstrap diodes, it offers optimized switching performance and reduced system complexity, making it ideal for use in air conditioners, refrigerators, washing machines, fans, pumps, and other three-phase inverter-driven systems.

PSS15SA2FT integrates advanced protection features including under-voltage (UV) lockout, short-circuit (SC) protection via external shunt sensing, and fault signaling for improved safety. PSS15SA2FT also provides analog temperature output for monitoring, ensuring system reliability. With support for both 3V and 5V logic levels and UL1557 recognition, the PSS15SA2FT is a best choice for appliance and industrial motor control designs.

If you are interested in purchasing the PSS15SA2FT, feel free to contact us for pricing and availability.

PSS15SA2FT Features
• 3-phase DC/AC inverter module

• 1200V / 15A rating (±30A peak for 1 ms)

• Built-in LPT-CSTBT (6th generation IGBT)

• Built-in bootstrap diodes with current limiting resistor

• N-side IGBT open emitter for easy current sensing

• Compact insulated transfer-molded DIPIPM package

• 2500 Vrms isolation voltage

• Under-voltage (UV) protection on both P and N sides

• Short-circuit (SC) protection with external shunt sensing

• Fault output signaling for UV and SC events

• Analog temperature output from LVIC (monitoring only)

• Supports both 3V and 5V input logic

• Schmitt-trigger receivers for noise immunity

• UL recognized (UL1557) safety compliance

PSS15SA2FT Advantages & Disadvantages
PSS15SA2FT Advantages:

• Easy to use since it combines power devices, drivers, and protection in one module.

• Saves PCB space because of its compact package.

• More reliable with built-in protections that reduce failure risks.

• Energy efficient, lowering power loss and operating costs.

• Cost-effective for bulk production since it reduces extra components.

• Can be used in many appliances and motor-driven systems.

PSS15SA2FT Disadvantages:

• No automatic shutdown for over-temperature, only monitoring.

• Needs an external shunt resistor for short-circuit sensing.

• Limited to 15A, not ideal for high-power drives.

• Fixed DIPIPM package reduces flexibility.

• Temperature output is analog, requiring extra circuitry.

PSS15SA2FT Common Issues & Resolutions
The Mitsubishi PSS15SA2FT is dependable, but some issues may appear during use. Knowing these problems and their fixes helps keep the module safe and reliable.

Overheating - The module does not have automatic over-temperature shutdown, only monitoring. You need to use external thermal protection circuits and proper heat sinking to prevent damage.

Short-Circuit Events - Needs an external shunt resistor for sensing, so improper design may cause failure. Choose the correct shunt value and ensure fast-response protection circuitry.

Limited Current Handling - Rated for ±15A continuous, which may not fit higher power applications. Use it within its safe range or select a higher-rated module for bigger drives.

Noise & Signal Errors - Electrical noise may affect inputs if not designed properly. Use proper PCB layout, shielding, and filters to keep signals stable.

Temperature Monitoring Integration - Provides only analog temperature output, requiring extra processing. Add external circuits or microcontroller ADCs to read and act on temperature signals.

PSS15SA2FT Applications
Air Conditioners - Controls inverter-driven compressors and fans for efficient cooling.

Washing Machines - Powers the drum motor for smooth, energy-saving operation.

Refrigerators & Freezers - Drives compressor motors to maintain stable cooling.

Dishwashers - Runs water pumps and circulation motors for reliable cleaning cycles.

Electric Fans & Blowers - Provides efficient speed control for airflow systems.

Water Pumps - Ensures steady motor control for household and industrial pumping.

General Motor Drives - Suitable for small three-phase motor systems across appliances.

Industrial Equipment - Used in compact automation tools requiring stable inverter drives.