The SG1524BJ/883B is a high-reliability, radiation-hardened pulse-width modulator (PWM) control circuit designed for demanding power supply applications in aerospace, military, and other harsh environments. Manufactured by Microsemi Corporation, this device offers precise control of switching power supplies and robust performance under extreme conditions. It is specifically designed and manufactured to meet stringent military specifications (MIL-STD-883B), ensuring its suitability for mission-critical applications. Its radiation-hardened design makes it resistant to the effects of ionizing radiation.

Applications

• Spacecraft power supplies
• Military power supplies
• Avionics power systems
• Satellite power systems
• High-reliability DC-DC converters
• Power supplies for radiation environments

Features

• Radiation hardened design
• Precise PWM control
• Adjustable dead time
• Soft-start capability
• Overvoltage protection
• Undervoltage lockout (UVLO)
• Current limiting

Benefits

• Reliable operation in harsh environments: The radiation-hardened design ensures stable performance in the presence of ionizing radiation.
• Precise power supply control: The PWM control provides accurate and efficient regulation of output voltage and current.
• Enhanced system protection: Built-in protection features such as overvoltage protection, UVLO, and current limiting prevent damage to the power supply and the load.
• Improved system performance: Adjustable dead time and soft-start capability allow for optimization of power supply performance.
• Meets military specifications: The device is manufactured to meet MIL-STD-883B specifications.

Additional Details

The SG1524BJ/883B is typically available in a hermetically sealed package. It requires careful consideration of thermal management to ensure optimal performance. The device is designed to operate over a wide temperature range. The datasheet provides detailed information on the electrical characteristics, radiation performance, and application circuits. Proper filtering and decoupling are essential to minimize noise and ensure stable operation. The device is often used in conjunction with other radiation-hardened components to build complete and robust power systems.