PM75RL1A120: Specifications, Applications, and Advantages
2025-04-02 166

The PM75RL1A120 by Powerex Inc. is a top module designed to manage and control power efficiently. This article takes a close look at how this module works, highlighting its use in various powerful applications, from running motors to powering up renewable energy systems. We’ll explore its features, technical details, and how it stacks up against other similar modules.

Catalog

Circuit Diagram of PM75RL1A120

The circuit diagram shown is for the PM75RL1A120, an intelligent power module (IPM) used for driving three-phase motors. It integrates six IGBTs (Insulated Gate Bipolar Transistors) along with their corresponding freewheeling diodes and gate drive circuitry. The left half of the diagram shows the input control section, where signal pins such as FO (fault output), IN (control input), V_CC (power supply for the logic), and OT (over-temperature signal) are used to control and monitor each IGBT. Each IGBT has its dedicated gate drive and protection circuitry, enhancing overall safety and performance.

The right half of the diagram represents the power stage. Here, the U, V, and W output phases are connected to the motor. These outputs are controlled by the six IGBTs configured in a typical three-phase bridge arrangement. The module is also equipped with built-in flyback diodes across each IGBT to allow current recirculation during switching, which protects the transistors and helps maintain efficiency. Various pins, such as V_UPC, V_VPC, V_WPC, and others, provide connections for both control and power signals.

Overview of PM75RL1A120

The PM75RL1A120 from Powerex Inc. exemplifies advanced integration in Intelligent Power Modules (IPMs). This module consolidates IGBTs, diodes, control circuits, and protection mechanisms into a single unit, aiming to streamline power and motor control systems. With its 75-ampere and 1200-volt rating, it meets the demanding requirements of high-power applications like inverter drives and AC motor control. The PM75RL1A120 not only simplifies system design by minimizing the need for separate components but also enhances system performance, reliability, and efficiency.

Powerex is renowned for its commitment to robust power semiconductor solutions, and the PM75RL1A120 is a testament to this. It supports diverse industrial applications by accommodating extensive temperature ranges and operating conditions while integrating critical safety features, including overcurrent, overvoltage, and overtemperature protections.

If you're considering placing bulk orders, the PM75RL1A120 from Powerex stands out with its unmatched combination of compact design, high efficiency, and reliability, making it the ideal choice for your power control needs.

PM75RL1A120 Features

Feature	Description
Complete Output Power Circuit	Includes a fully integrated output power circuit capable of handling high voltage and current, simplifying external circuitry requirements and ensuring reliable power delivery.
Gate Drive Circuit	Incorporates a dedicated gate drive circuit for each IGBT, optimized for fast and secure switching, minimizing switching losses and improving efficiency.
Protection Logic	- Short Circuit: Detects and reacts to short circuits to prevent damage.
	- Over Temperature: Utilizes on-chip temperature sensing to avoid thermal overload.
	- Under Voltage: Monitors and reacts to low voltage levels to ensure system stability.
Low Loss Using Full Gate CSTBT™ IGBT Chip	Utilizes CSTBT™ IGBT chips designed for low conduction and switching losses, enhancing performance and efficiency.
Integrated Flywheel Diode	Each IGBT is paired with a flywheel diode that provides a path for freewheeling current, protecting against voltage spikes.
Compact and Robust Package	Features a compact, high thermal conductivity package that withstands harsh environmental conditions, reducing physical footprint.
EMI Reduction Techniques	Incorporates techniques to reduce electromagnetic interference, crucial for applications sensitive to EMI.

Technical Details

Characteristics / Parameter	Symbol	PM75RL1A120	Units
Absolute Maximum Ratings (Tj = 25°C unless otherwise specified)
Power Device Junction Temperature	Tj	-20 to 150	°C
Storage Temperature	Tstg	-40 to 125	°C
Mounting Torque, M5 Mounting Screws	—	31	in-lb
Mounting Torque, M5 Main Terminal Screws	—	31	in-lb
Module Weight (Typical)	—	380	Grams
Supply Voltage, Surge (Applied between P - N)	VCC(surge)	1000	Volts
Self-protection Supply Voltage Limit (Short Circuit Protection Capability)	VCC(prot.)	800	Volts
Isolation Voltage, AC 1 minute, 60Hz Sinusoidal	VISO	2500	Volts
IGBT Inverter Sector
Collector-Emitter Voltage (VD = 15V, VCIN = 15V)	VCES	1200	Volts
Collector Current (TC = 25°C) (Note 1)	±IC	75	Amperes
Peak Collector Current (TC = 25°C)	±ICP	150	Amperes
Collector Dissipation (TC = 25°C)	PC	595	Watts
IGBT Brake Sector
Collector-Emitter Voltage (VD = 15V, VCIN = 15V)	VCES	1200	Volts
Collector Current (TC = 25°C)	±IC	50	Amperes
Peak Collector Current (TC= 25°C)	±ICP	100	Amperes
Collector Dissipation (TC = 25°C)	PC	462	Watts
Diode Forward Current	IF	50	Amperes
Diode Rated DC Reverse Voltage (TC = 25°C)	VR(DC)	1200	Volts
Control Sector
Supply Voltage (Applied between VUP1–VUPC, VVP1–VVPC, VWP1–VWPC, VN1–VNC)	VD	20	Volts
Input Voltage (Applied between UP–VUPC, VP–VPVC, WP–WPVC, UN–VN, WN–Br–VNC)	VCIN	20	Volts
Fault Output Supply Voltage	VFO	30	Volts
Fault Output Current (UFO–VFO, WFO–VFO, FO–VNC)	IFO	20	mA

Electrical and Mechanical Characteristics

Applications of PM75RL1A120 in Power Electronics

Motor Drive Systems

The PM75RL1A120 is widely used in motor drive systems for both industrial and commercial applications. Its ability to efficiently manage and drive three-phase motors makes it ideal for applications like conveyor belts, HVAC systems, and automated machinery. The integrated protection features ensure reliable operation under variable load conditions.

Renewable Energy Systems

In renewable energy systems, such as solar inverters or wind turbine converters, the PM75RL1A120 helps in managing the conversion of DC to AC power. Its high voltage and current handling capabilities are crucial for these applications, ensuring that energy conversion is efficient and losses are minimized.

Electric Vehicle (EV) Powertrains

The PM75RL1A120 is suitable for use in electric vehicle powertrains, particularly for controlling the traction motors. Its robust design and integrated drive circuits provide the necessary precision and efficiency required for automotive applications, contributing to better handling and longer battery life.

Power Supplies and UPS Systems

This module can be utilized in the design of power supplies and uninterruptible power supplies (UPS). Its efficiency and low-loss characteristics are vital in ensuring that these systems can deliver stable and reliable power, which is particularly important in critical infrastructure and data centers.

Industrial Automation and Control Systems

The PM75RL1A120 is also applicable in the automation and control systems used in manufacturing and processing industries. The module's capacity for rapid switching and protection against various electrical faults makes it an excellent choice for ensuring the safety and efficiency of automated processes.

Power Dissipation and Efficiency Considerations for PM75RL1A120

Understanding Power Dissipation in PM75RL1A120

The PM75RL1A120 module's power dissipation primarily comes from its IGBTs and diodes during operation. These components generate heat as a byproduct of their switching and conduction losses. The module is designed to minimize these losses through its CSTBT™ IGBT technology, which improves efficiency by reducing the voltage drop and switching frequencies typically associated with high-power applications.

Thermal Management

Effective thermal management is crucial for maintaining the efficiency and longevity of the PM75RL1A120. The module is built with a robust thermal interface that facilitates heat transfer to a heatsink or cooling system. Ensuring proper cooling is essential to prevent thermal overload, which can affect performance and lead to device failure.

Efficiency Metrics

The efficiency of the PM75RL1A120 is significantly influenced by its ability to handle high voltages and currents with minimal losses. The module's design focuses on maximizing conduction efficiency and minimizing the switching energy, which is critical for applications where power efficiency is a priority, such as in renewable energy systems and electric vehicles.

Optimizing Operating Conditions

To maximize the efficiency of the PM75RL1A120, it is important to optimize the operating conditions. This includes adjusting the gate drive voltages, switching frequencies, and load conditions to align with the module's specifications. Operating within the recommended conditions helps in achieving the best balance between performance and power dissipation.

Design Considerations

When integrating the PM75RL1A120 into systems, engineers must consider both the electrical and physical design aspects. This involves selecting appropriate companion components, such as capacitors and resistors, that match the module’s characteristics. The physical layout should promote good airflow and minimize heat accumulation, further aiding in efficient power management.

Comparison with Other IPMs

Feature	PM75RL1A120	PM50CLA120	7MBP75RA120
Maximum Ratings	75A, 1200V	50A, 1200V	75A, 1200V
IGBT Technology	CSTBT™ IGBT	Non-punch through IGBT	Field Stop IGBT
Protection Features	Short Circuit, Over Temperature, Under Voltage	Over Current, Thermal Shutdown	Short Circuit, Over Temperature, Over Current
Thermal Management	Advanced thermal interface for enhanced heat dissipation	Standard cooling requirements	Integrated advanced cooling features
Efficiency	High efficiency with low conduction and switching losses	Moderate efficiency	Very high efficiency with optimized switching
Integration Level	High (integrated gate drivers and protection circuits)	Moderate (additional components may be required)	Very high (fully integrated control and protection)
Target Applications	Motor drive systems, renewable energy, EV powertrains	Consumer electronics, small motor control	High-power industrial applications, large motor drives
Cost	Higher due to advanced features and capabilities	Lower, suitable for less demanding applications	Higher, reflecting premium performance and integration

PM75RL1A120 Packaging Details

The packaging diagram of the PM75RL1A120 provides critical mechanical details for proper installation and integration of the module into power electronic systems. This Intelligent Power Module comes in a robust rectangular housing designed to accommodate both power and control terminals, with clearly labeled pin assignments (1–19) along the top edge for signal and logic connections. The lower section includes large screw-type terminals for the three-phase output (U, V, W) and the DC bus connections (P and N), allowing for secure high-current connections.

The mechanical drawing specifies key dimensions, such as length, width, height, and pin spacing, which are essential for designing the PCB footprint and heatsink interface. Mounting hole positions and clearance dimensions are also marked to ensure mechanical stability and proper heat dissipation. The side view highlights the height profile and pin elevation, aiding in the enclosure design and airflow planning.

Manufacturer Details

Powerex Inc. excels in the development and manufacturing of advanced semiconductor solutions like the PM75RL1A120, utilizing their deep expertise in power electronics. Their capabilities include integrating complex power systems into compact, efficient modules, as demonstrated by the PM75RL1A120, which features innovative CSTBT™ IGBT technology for enhanced performance and reliability.

Conclusion

The PM75RL1A120 stands out for its ability to handle tough jobs in energy management and motor control. It’s built to last, performs well under pressure, and saves energy, making it a smart choice for various industries. Buying it in bulk could upgrade your systems and help you run things more smoothly and efficiently.

Datasheet PDF

PM75RL1A120 Datasheet:

1.PM75RL1A120.pdf

2.PM75RL1A120.pdf

PM75RL1A120 PDF - DE.pdf