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IR1150STR

IR1150STR Description

The IR1150STR from Infineon Technologies is a Power Factor Correction (PFC) Controller IC designed for Continuous Conduction Mode (CCM) operation. This surface-mount device operates within a 15V to 20V supply range and features a fixed switching frequency of 200kHz, ensuring stable performance in high-efficiency power supply designs. With a low startup current of 175 µA, it minimizes power loss during initialization. The IR1150STR is housed in an 8-SOIC package and is classified as obsolete, though it remains a reliable choice for legacy systems requiring robust PFC control.

IR1150STR Features

• CCM Operation: Ensures high efficiency and low harmonic distortion in power conversion.
• Wide Operating Voltage (15V–20V): Compatible with diverse power supply configurations.
• 200kHz Switching Frequency: Optimizes performance in compact designs while reducing EMI.
• Low Startup Current (175 µA): Enhances energy efficiency during power-up.
• Surface-Mount (SOIC-8) Package: Facilitates easy integration into PCB layouts.
• Industrial-Grade Temperature Range (0°C to 70°C): Suitable for moderate-environment applications.
• REACH Unaffected & EAR99 Compliance: Meets environmental and export control standards.

IR1150STR Applications

Ideal for AC-DC power supplies, LED drivers, and server/telecom power systems requiring high power factor correction. Its CCM operation makes it particularly effective in:

• Industrial Power Supplies: Where stable, high-efficiency PFC is critical.
• Consumer Electronics: Such as high-end audio/video equipment.
• Renewable Energy Systems: Including solar inverters with stringent harmonic requirements.

Conclusion of IR1150STR

While marked obsolete, the IR1150STR remains a technically sound PFC controller for legacy or niche applications demanding CCM efficiency, low startup power, and compact design. Its robust performance in 200kHz switching and compliance with industry standards make it a viable option for engineers maintaining or upgrading existing systems. For new designs, consider Infineon’s newer PFC offerings with advanced features.