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reference designLT7184S | Demoboard EVAL-LT7184S-AZ

Analog Devices LT7184S | Demoboard EVAL-LT7184S-AZ

Dual Channel 9A, 16V, PolyPhase Step-Down Silent Switcher 2 with Digital Power System Management

Overview

TopologyBuck Converter
Input voltage2.9-16 V
Switching frequency925-1075 kHz
Output 13.3 V / 9 A
Output 21.2 V / 9 A

Description

The EVAL-LT7184S-AZ evaluation board is a dual-output PolyPhase® monolithic DC/DC synchronous step-down regulator with a 2.9V or 1.5V with EXTVCC to 16V input range featuring LT®7184S. Each output can supply -8A to +9A continuous current and simultaneously deliver up to 7A of continuous current from both channels. The second-generation Silent Switcher® regulator structure is incorporated into the LT7184S to minimize EMI and reduce Printed circuit board (PCB) layout sensitivity. It also integrates digital power system management functions, allowing for programmability and telemetry with a PMBus/I2C-compliant serial interface. Refer to the LT®7184S datasheet for more detailed information.

Features

  • Silent Switcher 2 Architecture: Enables Compact, Efficient, Low EMI Solution
  • PMBus/I2C Serial Interface
  • Telemetry Read Back Includes: VOUT, IOUT, VIN, Die Temperature, Faults
  • Programmable Voltage, Current Limit, Digital Soft-Start/Stop, Sequencing, UV/OV, Phase, Frequency (up to 4MHz), Loop Compensation
  • Integrated EEPROM with Fault Event Log
  • Set Key Parameters with Configuration Resistors for Operation without Programming
  • ±0.25% Output Voltage Accuracy over Temperature from 0.6V to 1.375V
  • PolyPhase® Load Sharing for up to Eight Phases
  • Wide VIN Range: Down to 2.9V, or 1.5V with EXTVCC up to 16V
  • Over 94% Peak Efficiency at 1MHz, 12VIN to 3.3VOUT
  • VOUT Range: 0.4V to 5.5V (up to 85% x VIN);
  • Differential Remote VOUT Sense
  • External Frequency Synchronization
  • 36-Lead (4mm x 5mm) LQFN Package

Typical applications

  • Communications Systems
  • Industrial Systems
  • Storage
  • Data Center and Solid-State Drive Power Supplies

More information

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC max.(mΩ)
fres(MHz)
Z @ 100 MHz(Ω)
Zmax(Ω)
Test Condition Zmax
IR(mA)
Z @ 1 GHz(Ω)
H(mm)
Type
Pins
Mount
L(mm)
Working Voltage(V (AC))
Operating Temperature
SamplesAvailability & Sample
744373240047
SPECWE-LHMI SMT Power Inductor, 0.47 µH, 8.7 A
Simu­lation
Availability
–
Downloads9 files

EDA models: Components ZIP

CAD files ZIP

Electric models ZIP

Download all 9 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-LHMI SMT Power Inductor
Inductance0.47 µH
Performance Rated Current8.7 A
Saturation Current @ 10%10.4 A
Saturation Current @ 30%19.6 A
DC Resistance14 mΩ
Self Resonant Frequency122 MHz
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Height1.8 mm
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Pins2 
MountSMT 
Length4.45 mm
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Operating Temperature -40 °C up to +125 °C
–Check availability
74279226101
SPECWE-MPSB EMI Multilayer Power Suppression Bead, –, –
Simu­lation
Availability
–
Downloads10 files

EDA models: Components ZIP

CAD files ZIP

Electric models ZIP

Download all 10 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-MPSB EMI Multilayer Power Suppression Bead
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DC Resistance6 mΩ
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Impedance @ 100 MHz100 Ω
Maximum Impedance160 Ω
Maximum Impedance1100 MHz 
Rated Current8000 mA
Impedance @ 1 GHz150 Ω
Height2.3 mm
TypeHigh Current 
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MountSMT 
Length4.5 mm
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Operating Temperature -55 °C up to +125 °C
–Check availability
60800213421
SPECWR-PHD Jumper, –, –
Simu­lation–
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
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Rated Current3000 mA
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Pins2 
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Working Voltage200 V (AC)
Operating Temperature -25 °C up to +105 °C
–Check availability
62000311121
SPECWR-PHD Pin Header, –, –
Simu­lation–
Availability
–
Downloads7 files

EDA models: Components ZIP

CAD files ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header
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Rated Current2000 mA
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TypeStraight 
Pins3 
MountTHT 
Length6 mm
Working Voltage200 V (AC)
Operating Temperature -40 °C up to +105 °C
–Check availability