STMicroelectronics VIPER25LD - Energy Efficient Offline Switcher

The VIPER25LD from STMicroelectronics is a cutting-edge, low-power offline switched-mode power supply (SMPS) primary switcher IC designed for a wide range of power applications. This high-performance device is part of the VIPerPlus family and stands out for its energy efficiency and reliability, making it an ideal choice for applications requiring an AC/DC conversion with a fixed 60 kHz switching frequency.

With a built-in 730V avalanche-rugged power section, the VIPER25LD ensures robustness and improved power handling capability. This feature is particularly useful in challenging environments where voltage spikes and surges are common. The device's integrated high-voltage startup circuitry ensures a quick and efficient power-up sequence, reducing the overall standby power consumption.

The VIPER25LD offers a range of features designed to protect both the IC and the systems it powers. These include overvoltage protection (OVP), overload protection (OLP), and thermal shutdown with hysteresis. Additionally, the device incorporates a soft-start function to minimize stress on the power components during startup, further enhancing system longevity and reliability.

Flexibility in design is another key advantage of the VIPER25LD. It can be utilized in a variety of converter topologies, such as buck, buck-boost, and flyback circuits. This versatility, combined with a jittered 60 kHz PWM operation, helps to reduce electromagnetic interference (EMI), making it easier for designers to meet regulatory requirements.

Applications for the VIPER25LD are diverse and include power supplies for household appliances, set-top boxes, auxiliary power supplies for industrial systems, and LED lighting solutions. Its compact SO-8 package makes it suitable for space-constrained designs, while its energy-saving features help manufacturers meet eco-design norms and reduce the carbon footprint of their products.

Overall, the VIPER25LD by STMicroelectronics provides designers with a highly efficient, versatile, and reliable solution for their power conversion needs, ensuring both performance and compliance with environmental standards.