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ADP3166 - 4-Phase Synchronous Buck Controller

Description

FUNCTIONAL BLOCK DIAGRAM VCC 28 RAMPADJ RT 14 13 ADP3166 EN 11 UVLO SHUTDOWN AND BIAS OSCILLATOR + GND 19 CROWBAR 6 CSREF 2.1V DAC + 300mV CSREF + DAC 300mV 23 SW1 PWRGD 10 DELAY 22 SW2 21 SW3 ILIMIT 15 EN CURRENT LIMIT CIRCUIT + 20 SW4 17 CSSUM 16 CSREF 18 CSCOMP SOFT

Features

  • S Selectable 2-, 3- or 4-Phase Operation at up to 1 MHz per Phase Differential Sensing Error ± 1% over Temperature Logic-Level PWM Outputs for Interface to External High Power Drivers Active Current Balancing between All Output Phases Built-in Power Good Blanking Supports On-the-Fly VID Code Changes 5-Bit Digitally Programmable 0.8 V to 1.55 V Output Short-Circuit Protection with Programmable Latch-Off Delay Overvoltage Protection Crowbar Logic Output.

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Full PDF Text Transcription

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www.DataSheet4U.com 5-Bit Programmable 2-, 3-, 4-Phase Synchronous Buck Controller ADP3166* FEATURES Selectable 2-, 3- or 4-Phase Operation at up to 1 MHz per Phase Differential Sensing Error ± 1% over Temperature Logic-Level PWM Outputs for Interface to External High Power Drivers Active Current Balancing between All Output Phases Built-in Power Good Blanking Supports On-the-Fly VID Code Changes 5-Bit Digitally Programmable 0.8 V to 1.55 V Output Short-Circuit Protection with Programmable Latch-Off Delay Overvoltage Protection Crowbar Logic Output APPLICATIONS Desktop PC Power Supplies Next-Generation AMD Processors VRM Modules GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM VCC 28 RAMPADJ RT 14 13 ADP3166 EN 11 UVLO SHUTDOWN AND BIAS OSCILLATOR + GND 19 CROWBAR 6 CSREF 2.
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