Infineon Technologies IPD50R399CP

IPD50R399CP CoolMOS Power Transistor Introduction

The Infineon Technologies IPD50R399CP is a high-voltage N-channel MOSFET specifically designed to meet the performance requirements of demanding switched-mode power supply (SMPS) topologies. With a drain-source voltage rating of 500V and a continuous drain current capability of 9A (Tc), the IPD50R399CP offers robust performance for designers targeting energy-efficient and reliable power conversion systems. Belonging to Infineon's CoolMOS™ Power Transistor portfolio, it leverages advanced process technology to deliver high efficiency and fast switching characteristics in a compact surface-mount package (PG-TO252-3). The IPD50R399CP is fully RoHS compliant and adheres to JEDEC quality standards, supporting design flexibility across a wide array of industrial and consumer electronics.

IPD50R399CP Physical Design and Package Specifications

A key aspect of the IPD50R399CP is its PG-TO252-3-11 package (commonly referred to as DPAK or TO252-3), which enables surface mount assembly for streamlined manufacturing and thermal management. With this compact footprint, the device supports high-density designs yet allows for effective heat dissipation—essential in power supply, lighting ballast, and TV applications. Mechanical outlines adhere to Infineon’s rigorous specification, facilitating integration into automated production processes and ensuring compatibility with standard PCB land patterns.

Essential Functions and Main Benefits of the IPD50R399CP

The IPD50R399CP is characterized by a market-leading figure of merit, defined as low RDS(on) × Qg (drain-source on-state resistance times gate charge), which sets it apart in high-frequency switching environments. Ultra low gate charge enables fast switching and reduced gate drive losses. The device also features high peak current capability and an extreme dv/dt rating, making it suitable for applications exposed to voltage spikes and rapid switching events. Moreover, its Pb-free lead plating and RoHS-compliant design align with environmental directives, enabling usage in global electronics production without compliance barriers.

Further contributing to design robustness, the IPD50R399CP is qualified according to J-STD20 and JESD22 for thermal and mechanical reliability, making it a dependable choice for engineers requiring long operating life and high product confidence.

Comprehensive Analysis of IPD50R399CP Electrical and Thermal Characteristics

Engineers evaluating switching devices scrutinize both the static and dynamic characteristics. The IPD50R399CP delivers:

Drain-Source Voltage (VDS): 500V

Continuous Drain Current (ID): 9A (Tc)

Maximum Power Dissipation: 83W (Tc)

Extremely low RDS(on), reducing conduction losses

Low gate charge (Qg), minimizing driver requirements and improving turn-on/off speed

Robust avalanche energy performance and dv/dt withstand capability

Optimized capacitances (Ciss, Coss, Crss) tailored for low-switching loss and high efficiency

Thermal characteristics are critical, especially for compact SMPS and high-density lighting applications. The device demonstrates stable transient thermal impedance and is rated for operation in demanding conduction and switching thermal cycles. Its performance under typical and worst-case junction temperatures assures engineers of reliability in challenging thermal environments.

Use Cases and Industry Applications for IPD50R399CP

The IPD50R399CP excels in hard- and soft-switching SMPS topologies, including but not limited to:

Discontinuous mode (DCM) power factor correction (PFC) for lamp and LED ballasts

PWM control circuits in lighting, PDP, and LCD TV systems

General-purpose auxiliary switching in industrial and consumer high-voltage supplies

When designing for such environments, engineers benefit from fast-switching MOSFETs with high breakdown voltage and current handling, ensuring efficient energy transfer, conducted EMI mitigation, and minimized conduction/switching losses.

Alternative or Comparable Models to IPD50R399CP

Selecting the optimal MOSFET often requires evaluating equivalent or replacement options, should system requirements or supply chain considerations demand flexibility. Potential alternatives to the IPD50R399CP should feature:

500V minimum drain-source voltage

Equal or greater drain current capability (≥9A)

Comparable or lower RDS(on)

Similar package (TO252-3/DPAK) for footprint compatibility

Demonstrated reliability in SMPS and ballast applications

For precise replacement, engineers should also compare dynamic specs (Qg, Coss), avalanche and dv/dt ratings, and environmental compliance attributes. Infineon’s wider CoolMOS™ CP line and comparable market offerings from other MOSFET manufacturers can be considered, but close attention must be paid to any differences in switching performance, ruggedness, and qualification standards.

Conclusion

: Selecting the IPD50R399CP in Modern Power Designs

The IPD50R399CP from Infineon Technologies delivers a balanced combination of high-voltage capability, low switching and conduction losses, and environmental compliance—all in a compact, robust package. For engineers tasked with specifying MOSFETs for efficiency-critical applications in SMPS, lighting, or display power systems, the IPD50R399CP stands out for its optimized performance and reliable quality. Thorough assessment of system-level requirements alongside the device’s unique features ensures successful, futureproof electronic designs.