The ON Semiconductor NCP1055ST100T3 is a monolithic high-voltage regulator that integrates a fixed-frequency current mode controller with a 700 V MOSFET. Designed for high-performance off-line converters, this component is well-suited for a range of applications, including battery chargers, standby power supplies, and auxiliary power supplies.

Key Features

• Integrated 700 V MOSFET: The built-in MOSFET allows for reduced component count and simplifies circuit design, leading to a more compact and cost-effective power supply solution.
• Fixed-Frequency Operation: With a stable operation at a fixed frequency, this regulator ensures consistent performance, making it easier to manage electromagnetic interference (EMI) and design the surrounding components.
• Current Mode Control: The current mode architecture provides faster transient response and inherent cycle-by-cycle current limiting, enhancing the safety and reliability of the application.
• Auto-Recovery Overvoltage and Overload Protections: These features protect the device and the system against excessive voltage and power overload conditions, ensuring long-term stability and performance.
• Frequency Jittering: Frequency jittering helps to spread the EMI and reduce the EMI filtering requirements, which can lead to a reduction in the size and cost of the EMI filter components.
• Thermal Shutdown with Hysteresis: This safety feature shuts the device down in the event of excessive temperature, preventing thermal runaway and allowing the device to cool before it resumes operation.

Applications

The NCP1055ST100T3 is versatile and can be used in a variety of applications where efficient power conversion is required. Common applications include:

• AC-DC Adapters
• Battery Chargers
• Standby and Auxiliary Power Supplies
• Power over Ethernet (PoE) Supplies
• LED Lighting

ON Semiconductor's commitment to innovation is embodied in the NCP1055ST100T3, offering designers a robust, efficient, and compact solution for their power supply needs. Its integration of key features and protections ensures that it can meet the stringent requirements of modern electronic devices.