Power Electronics

Telecom Power IC

Intersil Corp’s ISL6721 single-ended current-mode PWM controller is designed to regulate power in telecom, datacom, and Power over Ethernet (802.3af) systems. It also has numerous applications in industrial power supplies.

The ISL6271 is ideal for both 48V datacom and 36V to 72V telecom applications. It’s designed for a wide range of dc-dc conversion topologies, including flyback, forward, and boost configurations. Peak current-mode control effectively handles power transients and provides inherent over-current protection. Other features include a low-power mode wherein the supply current drops to less than 200uA during overvoltage and overcurrent shutdown faults. The advanced BiCMOS design features low operating current, adjustable operating frequency up to 1 MHz, adjustable soft-start, and a bidirectional SYNC signal that allows the oscillator to be locked to an external clock or other controller ICs for noise-sensitive applications. Compared to related PWM controllers, the ISL6721 offers higher performance, higher integration and lower overall power solution cost.

For more information, visit www.intersil.com.

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