NCP5322A pdf datasheet (Two

NCP5322A Two−Phase Buck Controller with Integrated Gate Drivers and 5−Bit DACThe NCP5322A is a second−generaTIon, two−phase step downcontroller which incorporates all control funcTIons required to powerhigh performance processors and high current power supplies.Proprietary mulTI−phase architecture guarantees balanced load currentdistribuTIon and reduces overall solution cost in high currentapplications. Enhanced V2™ control architecture provides the fastestpossible transient response, excellent overall regulation, and ease ofuse. The NCP5322A is a second−generation PWM controller becauseit optimizes transient response by combining traditional Enhanced V2with an internal PWM ramp and fast−feedback directly from VCORE tothe internal PWM comparator. These enhancements provide greaterdesign flexibility, facilitate use and reduce output voltage jitter.The NCP5322A multi−phase architecture reduces output voltageand input current ripple, allowing for a significant reduction in filtersize and inductor values with a corresponding increase in inductorcurrent slew rate. This approach allows a considerable reduction ininput and output capacitor requirements, as well as reducing overallsolution size and cost.Features• Enhanced V2 Control Method with Internal Ramp• Internal PWM Ramp• Fast−Feedback Directly from VCORE• 5−Bit DAC with 1.0% Accuracy• Adjustable Output Voltage Positioning• 4 On−Board Gate Drivers• 200 kHz to 800 kHz Operation Set by Resistor• Current Sensed through Buck Inductors or Sense Resistors• Hiccup Mode Current Limit• Individual Current Limits for Each Phase• On−Board Current Sense Amplifiers• 3.3 V, 1.0 mA Reference Output• 5.0 V and/or 12 V Operation• On/Off Control (through Soft Start Pin)• Power Good Output with Internal Delay• Pb−Free Packages are Available