STMicroelectronics VIPER12ASTR-E

The VIPER12ASTR-E is a high-voltage power conversion IC from STMicroelectronics designed for offline flyback converters in applications such as power supplies for appliances, electronic devices, and LED lighting. Functions - Integrated High Voltage Start-up: Enables the device to start operating directly from the line voltage without the need for an external start-up circuit. - Switching Control: Utilizes an internal oscillator with a frequency of 100 kHz, which ensures efficient power conversion. - Overload and Short Circuit Protection: Protects the circuit from damage during fault conditions. - Thermal Protection: It includes features to disable the chip in case of excessive temperature conditions. - Adjustable Output Voltage: Offers adjustable output voltage through external feedback components. Applications - AC-DC Power Supplies: Used in applications such as chargers for portable devices, power adapters, and auxiliary power supplies for industrial applications. - LED Lighting Drivers: Suitable for driving LEDs through efficient conversion of AC to regulated DC. - Home Appliances: Can be utilized in various household appliances demanding reliable power supply. Alternative Parts If you're considering alternatives to VIPER12ASTR-E, here are a few comparable parts: - VIPER22: Another member of the VIPER family with higher power capabilities. - LNK304PN: From Power Integrations, which provides similar primary-side control. - TOPSwitch: Series from Power Integrations for alternative designs with integrated features. Embedded Modules There are specific development boards and evaluation kits available that utilize the VIPER12ASTR-E for ease of design and prototyping, such as: - VIPER12 Development Board: A board designed primarily to evaluate the performance of the VIPER12 family of ICs. - Power Supply Design Kits: Various kits that show how to implement the VIPER12 design in practical applications. Q&A Section 1. Q: What types of power supplies can the VIPER12ASTR-E be used in? A: The VIPER12ASTR-E can be used in AC-DC power supplies, LED drivers, and auxiliary power supplies in home appliances and electronic devices. 2. Q: What is the typical switching frequency of the VIPER12ASTR-E? A: The VIPER12ASTR-E operates at a typical switching frequency of 100 kHz. 3. Q: Does the VIPER12ASTR-E provide any protection features? A: Yes, it includes overload protection, thermal protection, and short circuit protection to safeguard the circuit during adverse conditions. 4. Q: Are there any evaluation boards available for the VIPER12ASTR-E? A: Yes, there are development boards and evaluation kits available specifically for the VIPER12ASTR-E to help designers prototype and evaluate the integrated circuit's performance. 5. Q: Can the output voltage of the VIPER12ASTR-E be easily adjusted? A: Yes, the output voltage of the VIPER12ASTR-E can be adjusted using external feedback components in the design.