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reference designXR76120

MaxLinear XR76120

Power BloxTM 15A and 20A Synchronous Step-Down COT Regulators

Overview

TopologyBuck Converter
Input voltage12 V
Switching frequency200-1000 kHz
Output 11.8 V / 20 A
IC revision1A

Description

The XR76116 and XR76120 are synchronous step-down regulatorscombining the controller, drivers, bootstrap diode and MOSFETsin a single package for point-of-load supplies. The XR76116 has aload current rating of 15A and the XR76120 has a load current ratingof 20A. A wide 5V to 22V input voltage range allows for single supplyoperation from industry standard 5V, 12V and 19.6V rails.With a proprietary emulated current mode constant on-time (COT)control scheme, the XR76116/20 provide extremely fast line andload transient response using ceramic output capacitors. Theyrequire no loop compensation, simplifying circuit implementationand reducing overall component count. The control loop alsoprovides 0.1% load and 0.1% line regulation and maintains constantoperating frequency. A selectable power saving mode, allows the userto operate in discontinuous mode (DCM) at light current loads therebysignificantly increasing the converter efficiency.A host of protection features, including overcurrent, over temperature,overvoltage, short-circuit, open feedback detect and UVLO, helpsachieve safe operation under abnormal operating conditions.The XR76116/20 are available in a RoHS-compliant, green/halogenfreespace-saving 5mm x 6mm QFN package.

Features

XR76116/20 REF. SAME DATA SHEET

  • 15A and 20A step-down regulators

  • 4.5V to 5.5V low VIN operation

  • 5V to 22V wide single input voltage

  • 3V to 22V operation with external5V bias

  • ≥0.6V adjustable output voltage

  • Proprietary constant on-time control

  • No loop compensation required

  • Ceramic output capacitor stableoperation

  • Programmable 70ns-1μs on-time

  • Constant 200kHz-1MHz frequency

  • Selectable CCM or CCM/DCMoperation

  • Power-good flag with low impedance whenpower removed

  • Precision enable

  • Programmable soft-start

  • 5mm x 6mm QFN package

Typical applications

  • Base stations, switches/routers
  • Point-of-load converters
  • Distributed power architecture
  • FPGA, DSP and processor supplies
  • Servers

More information

Products

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Data­sheet
Downloads
Status
Product series
Pitch(mm)
Type
Gender
Blade Design
Pins
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L(mm)
IR(A)
Working Voltage(V (AC))
Operating Temperature
Color
Packaging
SamplesAvailability & Sample
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60900213421
SPECWR-PHD Jumper, 2.54 mm, –
Availability
–
Downloads3 files

CAD files ZIP

Download all 3 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-PHD Jumper
Pitch2.54 mm
–
GenderJumper 
–
Pins1 
–
Length2.44 mm
Rated Current3 A
Working Voltage250 V (AC)
Operating Temperature -40 °C up to +125 °C
ColorBlack 
PackagingBag 
–Check availability
61300111121
SPECWR-PHD Pin Header - Single, 2.54 mm, Straight
Availability
–
Downloads7 files

EDA models: Components ZIP

CAD files ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Single
Pitch2.54 mm
TypeStraight 
GenderPin Header 
–
Pins1 
MountTHT 
Length2.54 mm
Rated Current3 A
Working Voltage250 V (AC)
Operating Temperature -40 °C up to +105 °C
–
PackagingBag 
–Check availability
61300211121
SPECWR-PHD Pin Header - Single, 2.54 mm, Straight
Availability
–
Downloads7 files

EDA models: Components ZIP

CAD files ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Single
Pitch2.54 mm
TypeStraight 
GenderPin Header 
–
Pins2 
MountTHT 
Length5.08 mm
Rated Current3 A
Working Voltage250 V (AC)
Operating Temperature -40 °C up to +105 °C
–
PackagingBag 
–Check availability
61300311121
SPECWR-PHD Pin Header - Single, 2.54 mm, Straight
Availability
–
Downloads7 files

EDA models: Components ZIP

CAD files ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Single
Pitch2.54 mm
TypeStraight 
GenderPin Header 
–
Pins3 
MountTHT 
Length7.62 mm
Rated Current3 A
Working Voltage250 V (AC)
Operating Temperature -40 °C up to +105 °C
–
PackagingBag 
–Check availability
7471287
SPECWA-MTAB Mounting Tabs, 5.08 mm, Vertical
Availability
–
Downloads6 files

EDA models: Components ZIP

CAD files ZIP

Download all 6 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWA-MTAB Mounting Tabs
Pitch5.08 mm
TypeVertical 
GenderMale 
Blade Design6.35 mm 
–
–
–
Rated Current15 A
–
Operating Temperature -55 °C up to +150 °C
–
PackagingBag 
–Check availability