ISL6559 Datasheet | Renesas

Multi-Phase PWM Controller NOc1NTo-8n OR8ta E8Rc-CEIt NOCo TMOu Er MMRTMESe NIc ELh DNon EDri Dc Ewa DFlw OSRw Ru E.ip Pn Np Lt Eeo Ar Wrs Ct i CEl D.c Me Eon SEmt INe G/r Tt Nsac St FN9084 Rev 8.00 December 29, 2004 The ISL6559 provides core-voltage regulation by driving 2 to 4 interleaved synchronous-rectified buck-converter channels in parallel. Interleaving the channel timing results in increased ripple frequency which reduces input and output ripple currents. The reduction in ripple results in lower ponent cost, reduced dissipation, and a smaller implementation area. The ISL6559 uses cost and space-saving r DS(ON) sensing for channel current balance, active voltage positioning, and over-current protection. Output voltage is monitored by an internal differential remote sense amplifier. A high-bandwidth error amplifier drives the output voltage to match the programmed 5-bit DAC reference voltage. The resulting pensation signal guides the creation of pulse width modulated (PWM) signals to...