NCP5322ADW Description
The NCP5322ADW is a second-generation, two-phase step-down controller that has all the control features needed to run high-performance processors and high-current power supplies. In high current applications, a proprietary multi-phase architecture ensures balanced load current distribution and lowers total solution costs. The enhanced V2TM control architecture offers the best overall regulation, the quickest transient response, and simplicity of usage. The NCP5322ADW is a second-generation PWM controller because it combines conventional Enhanced V2TM with an internal PWM ramp and fast-feedback straight from the VCORE to the internal PWM comparator to maximize transient responsiveness. These improvements increase design flexibility, make things easier to use, and lessen output voltage jitter. By reducing output voltage and input current ripple, the NCP5322ADW multi-phase architecture enables a large reduction in filter size and inductor values with a commensurate rise in inductor current slew rate. With this method, both the amount of input and output capacitors needed as well as the size and cost of the final product can be significantly reduced.
NCP5322ADW Features
Internal PWM Ramp
4 On–Board Gate Drivers
Hiccup Mode Current Limit
5.0 V and/or 12 V Operation
5–Bit DAC with 1.0% Accuracy
Pb-Free Packages are Available
3.3 V, 1.0 mA Reference Output
On–Board Current Sense Amplifiers
Fast–Feedback Directly from VCORE
Adjustable Output Voltage Positioning
On/Off Control (through Soft Start Pin)
Individual Current Limits for Each Phase
Power Good Output with Internal Delay
200 kHz to 800 kHz Operation Set by Resistor
Enhanced V2? Control Method with Internal Ramp
Current Sensed through Buck Inductors or Sense Resistors
NCP5322ADW Applications
Industrial
Automotive
Enterprise systems
