

The MAX17558 dual-phase EV kit provides a proven design to evaluate the MAX17558 wide 4.5V to 60V input, dual-phase, synchronous step-down DC-DC controller. In 2-phase operation, the two channels of the MAX17558 are operated 180° out of phase. This interleaves the current pulses drawn by the 2 phases, and results in reduced total RMS input current, which allows use of lesser number of input capacitors. The EV kit provides 3.3V/20A at the outputs from a 6V to 54V input supply. The switching frequency of the EV kit is preset to 350kHz for optimal efficiency and component size. The EV kit features adjustable input undervoltage-lockout and soft-start time, selectable PWM/DCM modes, 180° out-of-phase/0° inphase operation, current-limit threshold, and independent open-drain PGOOD signals.
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