STMicroelectronics VIPER28LE

STMicroelectronics VIPER28LE Environmental and export classification status description

The VIPER28LE is a highly integrated and high-voltage converter IC from STMicroelectronics, designed for offline power supplies. It offers high efficiency, reliability, and performance in a compact package. Functions: 1. High-Voltage Start-Up Circuit: Enables the IC to operate directly from the rectified mains, eliminating the need for an auxiliary bias supply. 2. PWM Controller: Regulates the output voltage by controlling the duty cycle of the switching signal. 3. Overcurrent and Overvoltage Protections: Safeguards the system from damaging conditions. 4. Built-In Overload Protection: Prevents excessive power draw. Applications: - AC-DC adapters - Battery chargers - LED lighting - Home appliances Alternative Components: Some alternative ICs to the VIPER28LE from STMicroelectronics are VIPER26, VIPER27, and VIPER29. Other manufacturers such as Infineon, Texas Instruments, and ON Semiconductor also offer similar high-voltage converter ICs. Embedded Modules: The VIPER28LE does not have embedded modules, as it is a standalone IC that integrates the necessary functions for offline power supplies. --- Related Q&A: 1. Can the VIPER28LE be used in high-power applications like industrial power supplies? - The VIPER28LE is suitable for medium-power applications up to a certain wattage. For high-power industrial applications, you may want to consider ICs with higher power ratings. 2. How does the VIPER28LE improve efficiency in power supplies? - The VIPER28LE offers high efficiency through its integrated design, minimizing power losses and maximizing energy conversion. 3. What are the typical output voltage and current ratings of the VIPER28LE? - The output voltage and current ratings of the VIPER28LE can vary depending on the application and design parameters but typically range from a few volts to tens of volts and currents up to several amps. 4. Does the VIPER28LE require external components for operation? - While the VIPER28LE integrates many functions required for power supply operation, external components such as passive components and magnetics are necessary for its complete implementation in a circuit. 5. Is the VIPER28LE suitable for automotive applications requiring high reliability? - The VIPER28LE is primarily designed for offline power supplies in applications like consumer electronics and home appliances. For automotive applications, ICs with specific automotive certifications and standards should be chosen for reliability and safety.