Intersil simplifies isolated DC/DC converters while providing high reliability
New Active Clamp PWM Controller Launched

Intersil's ISL6726 significantly reduces stress with its proprietary duty cycle clamp and average current limiting functions.

Intersil, a global leader in the design and production of high-performance analog and mixed-signal semiconductors, has launched the new current-mode PWM controller, the ISL6726. The newly released ISL6726 is a current-mode PWM controller that integrates various functions to simplify design and significantly reduce the number of external components, while enhancing circuit reliability through Intersil's proprietary duty cycle clamp. Furthermore, the product is ideal for applications requiring isolated active clamp forward and asymmetric half-bridge converter topologies, such as power systems for telecommunications and data communications equipment.

The ISL6726 includes both adjustable peak current limiting and average current limiting protection to provide high reliability. Additionally, the product offers two types of protection that keep the output current always within a safe operating range. The average current limiting function enables stable overload operation in applications requiring consistent current, such as battery chargers or LED drivers, as well as in programs requiring parallel converters. To enhance safety in synchronous rectifier applications, the ISL6726 controller protects switching elements by clamping the minimum duty cycle. This prevents negative current from flowing through the output inductor during load transients.

For applications requiring higher power, the ISL6726 provides a flexible and scalable solution that facilitates design reuse. In addition, the product features bidirectional synchronization along with a 180° phase shift that enables interleaved topologies.