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.
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