FAN5240 Datasheet Multi-Phase PWM Controller

Manufacturer: Fairchild (now onsemi)

FAN5240 multi-phase pwm controller by Fairchild (now onsemi) - Datasheet Preview

Datasheet Details

Part number	FAN5240
Manufacturer	Fairchild (now onsemi)
File Size	447.50 KB
Description	Multi-Phase PWM Controller
Download	FAN5240 Download (PDF)

General Description

The FAN5240 is a single output 2-Phase synchronous buck controller to power AMD’s mobile CPU core.

The FAN5240 includes a 5-bit digital-to-analog converter (DAC) that adjusts the core PWM output voltage from 0.925VDC to 2.0VDC, which may be changed during operation.

Special measures are taken to allow the output to transition with controlled slew rate to comply with AMD’s Power Now technology.

Overview

www.fairchildsemi.com FAN5240 Multi-Phase PWM Controller for AMD Mobile AthlonTM and.

Key Features

CPU Core power: 0.925V to 2.0V output range ±1% reference precision over temperature Dynamic voltage setting with 5-bit DAC 5V to 24V input voltage range 2 phase interleaved switching Active droop to reduce output capacitor size Differential remote voltage sense High efﬁciency: >90% efﬁciency over wide load range >80% efﬁciency at light load Excellent dynamic response with Voltage Feed-Forward and Average Current Mod.

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