The PX3511A and PX3511B are high frequency MOSFETdrivers specifically designed to drive upper and lower powerN-Channel MOSFETs in a synchronous rectified buckconverter topology. These drivers combined with theISL6595 Digital Multi-Phase Buck PWM controller andN-Channel MOSFETs form a complete core-voltageregulator solution for advanced microprocessors.The PX3511A drives the upper gate to 12V, while the lowergate can be independently driven over a range from 5V to12V. The PX3511B drives both upper and lower gates over arange of 5V to 12V. This drive-voltage provides the flexibilitynecessary to optimize applications involving trade-offsbetween gate charge and conduction losses.
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