NCP5322A

NCP5322A Two−Phase Buck Controller with Integrated Gate Drivers and 5−Bit DAC The NCP5322A is a second−generation, two−phase step down controller which incorporates all control functions required to power high performance processors and high current power supplies. Proprietary multi−phase architecture guarantees balanced load current distribution and reduces overall solution cost in high current applications. Enhanced V2™ control architecture provides the fastest possible transient response, excellent overall regulation, and ease of use. The NCP5322A is a second−generation PWM controller because it optimizes transient response by combining traditional Enhanced V2 with an internal PWM ramp and fast−feedback directly from VCORE to the internal PWM comparator. These enhancements provide greater design flexibility, facilitate use and reduce output voltage jitter. The NCP5322A multi−phase architecture reduces output voltage and input current ripple, allowing for a significant reduction in filter size and inductor values with a corresponding increase in inductor current slew rate. This approach allows a considerable reduction in input and output capacitor requirements, as well as reducing overall solution size and cost. http://onsemi.com 28 1 SO−28L DW SUFFIX CASE 751F PIN CONNECTIONS AND MARKING DIAGRAM 1 COMP VFB VDRP CS1 CS2 CSREF PWRGD VID0 VID1 VID2 VID3 VID4 ILIM REF A WL YY WW G 28 ROSC VCCL VCCL1 GATE(L)1 GND GATE(H)1 VCCH1 LGND SS VCCL2 GATE(L)2 GND2 GATE(H)2 VCCH2 ...