ON Semiconductor demo highly integrated controllers at APEC

In the demonstration of the NCP1565 dual-mode active clamp PWM controller, a telecomms industry 100W quarter brick will be loaded continuously in a triangular fashion from 0.1 to 10 to 0.1A. This will show the adaptive zero voltage switching (ZVS) feature of the device’s dual-mode active clamp PWM controller where dead-time varies with load to achieve the optimum ZVS point. This highly integrated device is targeted at next generation high-density, high performance, and small to medium power level isolated DC/DC converters used in the networking industries. It can also be used in 42V automotive applications. The NCP1565 conveniently integrates all necessary control and protection functions that are required to implement an isolated active clamp forward converter or asymmetric half-bridge converter.

The NCP1615 power factor controller will also be featured in a demonstration. This high voltage, power factor correction controller (PFC) is designed to drive PFC boost stages based on an innovative current controlled frequency foldback method and provides a rugged and extremely efficient solution for applications in computer power supplies, flat screen TVs, and LED lighting and ballasts. An integrated high-voltage start-up circuit along with numerous other built-in features eliminates the need for a number of external components helping to simplify design, enhance reliability, and reduce cost. This demonstration will show how the NCP1615 operates in a zero power consumption state when no load is applied, thus creating a safe environment for the end user by discharging the EMI filter capacitors when the power source is disconnected. These two features enable easy, robust, and efficient designs.

“APEC is an important landmark in the global electronics industry calendar,” said Shane Chilton, senior director, AC DC Power Conversion Division, ON Semiconductor. “ON Semiconductor’s innovative and growing portfolio of highly integrated power devices helps designers in a wide and diverse range of industry sectors achieve their targets for efficiency and performance, while also being robust and cost-effective.”