The VIPER100SP from STMicroelectronics is a high-performance, low-power off-line switched-mode power supply (SMPS) primary switching IC. This device is designed to support a wide range of power supply applications, offering a compact and efficient solution for AC/DC converters.

Key Features

• Integrated Power MOSFET: Comes with an 800V avalanche-rugged power section, enabling the device to withstand challenging power environments and providing improved reliability.
• Quasi-Resonant Operation: The VIPER100SP operates in a quasi-resonant mode that minimizes switching losses and improves overall efficiency, especially beneficial in reducing energy consumption for standby and no-load conditions.
• Pulse Frequency Modulation (PFM) Control: This feature helps in achieving low power consumption at light load and enhances efficiency across a wide load range.
• Built-in Protections: The device includes multiple protection features such as overvoltage, overload, short-circuit, and thermal shutdown, which contribute to the safety and longevity of the power supply design.
• Low Standby Power: It is designed to meet the most stringent energy-saving standards, with very low consumption under no-load conditions.

Applications

The VIPER100SP is suitable for a variety of applications, including:

• Adapters and battery chargers
• Set-top boxes
• Auxiliary power supplies (e.g., for appliances, TVs, and audio/video equipment)
• Standby and auxiliary power supplies

Technical Specifications

• Input Voltage Range: Wide VDD voltage range up to 38V
• Current Capability: Source current capability up to 30 mA, sink current capability up to 120 mA
• Frequency Adjustment: Allows flexibility in design, enabling optimization of magnetic components for size and cost reduction

The VIPER100SP is a testament to STMicroelectronics' commitment to delivering energy-efficient power solutions. Its robust design and integrated features make it an excellent choice for designers looking to create reliable and cost-effective power supplies.