The PX3684 Digital 4-phase Power Controller provides
voltage regulation to today’s high current memory
applications by driving up to four synchronous-rectified
buck-converter channels in parallel. Interleaved timing of
the channels results in a higher ripple frequency which
minimizes both input and output voltage ripple. The
PX3684 can be used to build DC-DC converters that
provide up to 130A to memory loads with excellent
efficiency.
The PX3684 utilizes digital technology to implement all
control functions, providing the ultimate solution in
flexibility and stability. An industry standard I2C?
compliant serial interface for real-time system control
allows the power supply designer to quickly optimize
designs and monitor system performance.
The PX3684 supports autonomous phase dropping
based on the total output current to maximize system
efficiency across load. The number of active phases in
phase drop mode is programmable. The autonomous
phasing feature can be disabled manually via the
PD_DIS pin.