Step down slave controller drives up to 300A
Linear Technology has introduced a dual phase synchronous step down slave controller.
The LTC3874 is capable of generating currents up to 300A when paired with a companion master controller. It does this by extending the phase count in multiphase applications.
Compatible master controllers include the LTC3866, LTC3875 and LTC3774, which all have true current mode control and enable the use of low (0.2milliohms) dc resistance power inductors without any sense resistor to maximise converter efficiency and increase power density.
The LTC3874 provides all functions needed for multiphase slave designs, including accurate phase to phase current sharing.
It operates over an input voltage range of 4.5 to 38V and produces a fixed output voltage up to 5.5V. Up to 12 phases can be paralleled and clocked out of phase to minimise filtering.
Typical applications include power distribution, redundant (n+1) supplies, industrial systems, dsp and asic power.
