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MaxLinear XR76116 | Demoboard XR76116EVB

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

Overview

TopologyBuck Converter
Input voltage12 V
Switching frequency200-1000 kHz
Output 11.8 V / 15 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 both ic ref. same evl

  • 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
  • Distributed power architecture
  • FPGA, DSP and processor supplies
  • Servers
  • Point-of-load converters

Products

Order Code Data­sheet Downloads Product seriesPitch
(mm)
Blade DesignPinsRowsGenderTypeIR
(A)
PackagingColor Samples
60900213421
STE 3D IGSWR-PHD 2.54 mm Multi-Jumper Jumper with Test Point 2.54 1 Jumper 3 Bag Black
61300111121
IGE STE 3D ALT EAG CADWR-PHD 2.54 mm THT Pin Header 2.54 1 Single Pin Header Straight 3 Bag
61300211121
IGE STE 3D ALT EAG CADWR-PHD 2.54 mm THT Pin Header 2.54 2 Single Pin Header Straight 3 Bag
61300311121
IGE STE 3D ALT EAG CADWR-PHD 2.54 mm THT Pin Header 2.54 3 Single Pin Header Straight 3 Bag
7471287
STE ALT EAG IGS CADWA-MTAB Mounting Tabs 5.08 6.35 mm Male Vertical Bag
Samples
Order Code Data­sheet Downloads Product seriesPitch
(mm)
Blade DesignPinsRowsGenderTypeIR
(A)
PackagingColor Samples