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The MAX5065 evaluation kit (EV kit) provides a +1.3V
adjustable output voltage from a +12V input source. It
delivers up to 10A of output current with a switching frequency
of 250kHz per phase and achieves efficiencies
up to 85%.
The MAX5065 dual-phase, PWM controller provides
high-output-current capability in a compact package
with a minimum number of external components. The
MAX5065 utilizes a dual-phase, average current-mode
control that enables optimal use of low RDS(ON)
MOSFETs, eliminating the need for external heatsinks
even when delivering high output currents.
Differential sensing enables accurate control of the output
voltage, while adaptive voltage positioning provides
optimum transient response. An internal regulator enables
operation with input voltage ranges of +4.5V to +5.5V or
+8V to +28V. The high switching frequency and dualphase
operation allow the use of low-output inductor values
and input capacitor values. This accommodates the
use of PC-board-embedded planar magnetics achieving
superior reliability, current sharing, thermal management,
compact size, and low system cost.
The MAX5065 also features a clock input (CLKIN) for
synchronization to an external clock, and a clock output
(CLKOUT) with programmable phase delay (relative to
CLKIN/DH) for paralleling multiple phases. The MAX5065
also limits the reverse current if the bus voltage becomes
higher than the regulated output voltage. This device is
specifically designed to limit current sinking when multiple
power-supply modules are paralleled. The MAX5065
offers an adjustable +0.6V to +3.3V output voltage.
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