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NCP5322A

Part Number	NCP5322A
Manufacturer	ON Semiconductor
Description	Two-Phase Buck Controller
Published	Apr 25, 2007
Detailed Description	NCP5322A Two−Phase Buck Controller with Integrated Gate Drivers and 5−Bit DAC The NCP5322A is a second−generation, two−p...
Datasheet	NCP5322A PDF File

Overview

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 • • • • • • • • • • • • • • • • Features www.
DataSheet4U.
com 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 O...

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NCP5322A Two-Phase Buck Controller - ON Semiconductor

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