Intersil PWM regulators comply with IMVP-6.5TM

Edited by the Electronicstalk editorial team Sep 28, 2009

Intersil has introduced compact multiphase PWM regulators that comply with the Intel Mobile Voltage Positioning (IMVP-6.5TM) specification.

ISL62882 and ISL62883 reduce total component cost and implementation footprint for a range of Intel-based mobile handsets, notebooks, network systems and embedded designs, including the Capella platform, based on the Ibex Peak-M chipset.

Each regulator supports various CPUs using programmable 3-, 2- or 1-phase operation.

Configurable overshoot reduction capabilities provide minimal Vout overshoot, which pre-empts voltage misreadings and the potential for product under-performance or failure.

Both devices feature phase dropping, diode emulation, adaptive body diode conduction-time reduction to optimise light-load efficiency and FB2 (full buffering) to optimise transient response and Z(f) in one-phase mode.

The ISL62882 provides a split LGate function.

To reduce total output voltage ripple, the converters apply interleaved phases.

Each phase carries part of the load current, which optimises system performance, efficiency and thermal management.

The PWM modulator is based on Intersil's Robust Ripple Regulator (R3) technology, which commands variable switching frequency during load transients.

With the same modulator, the switching frequency is reduced at light load, increasing the regulator efficiency.