Controllers | NCP5331

Two Phase CPU Controller with Integrated Gate Drivers for AMD's Athlon Processor

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Overview

The NCP5331 is a second-generation, two-phase, buck controller that incorporates advanced control functions to power 64-bit AMD Athlon processors and low voltage, high current power supplies. Proprietary multiphase architecture guarantees balanced load-current sharing, reduces output voltage and input current ripple, decreases filter requirements and inductor values, and increases output current slew rate. Traditional enhanced V2 has been combined with an internal PWM ramp and voltage feedback directily from Vcore to the internal PWM comparator. These features and enhancements deliver the fastest transient response, reduce output voltage jitter, provide greater design flexibility and porability, and minimize overall solution cost.

  • Reduced SMT Package Size (7mm x 7mm)
  • Enhanced V2 Control Method
  • Four On-Board Gate Drivers
  • Internal PWM Ramps
  • Differential Remote Voltage Sense
  • Fast Feedback Pin (VFFB)
  • 5-Bit DAC with 0.8% System Tolerance
  • Timed Hiccup Mode Current Limit
  • Power Good Output with Programmable Delay
  • Advanced Overvoltage Protection (OVP)
  • Adjustable Output Voltage Positioning
  • 150 kHz to 600 kHz Operation Set by Resistor
  • Lossless Current Sensing through Output Inductors
  • Independent Current Sense Amplifiers
  • 5.0V, 2mA Reference Output
  • Pb-Free Package is Available*

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NCP5331FTR2

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Obsolete

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CAD Model

Pb

A

H

P

LQFP-32

1

235

REEL

2000

N

-

2

V2

9

14

600

Price N/A

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NCP5331FTR2G

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Obsolete

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CAD Model

Pb

A

H

P

LQFP-32

2

260

REEL

2000

N

-

2

V2

9

14

600

Price N/A

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