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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 seriesL
(µH)		IRP,40K
(A)		ISAT,10%
(A)		ISAT,30%
(A)		RDC max.
(mΩ)		fres
(MHz)		Z @ 100 MHz
(Ω)		Zmax
(Ω)		Test Condition ZmaxIR
(mA)		Z @ 1 GHz
(Ω)		H
(mm)		TypePinsMountL
(mm)		Working Voltage
(V (AC))		Operating Temperature Samples
744373240047SPEC
9 files

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 Active i| Production is active. Expected lifetime: >10 years.WE-LHMI SMT Power Inductor 0.47 8.7 10.4 19.6 14 122 – – – – – 1.8 – 2 SMT 4.45 – -40 °C up to +125 °C
74279226101SPEC
10 files

EDA models: Components
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CAD files
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Electric models
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 Active i| Production is active. Expected lifetime: >10 years.WE-MPSB EMI Multilayer Power Suppression Bead – – – – 6 – 100 160 1100 MHz 8000 150 2.3 High Current – SMT 4.5 – -55 °C up to +125 °C
60800213421SPEC
–3 files

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Download all 3 files as zip archive
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 Active i| Production is active. Expected lifetime: >10 years.WR-PHD Jumper – – – – – – – – – 3000 – – – 2 – – 200 -25 °C up to +105 °C
62000311121SPEC
–7 files

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 Active i| Production is active. Expected lifetime: >10 years.WR-PHD Pin Header – – – – – – – – – 2000 – – Straight 3 THT 6 200 -40 °C up to +105 °C
Order Code Data­sheet Simu­lation
744373240047SPEC
74279226101SPEC
60800213421SPEC
–
62000311121SPEC
–
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)		IRP,40K
(A)		ISAT,10%
(A)		ISAT,30%
(A)		RDC max.
(mΩ)		fres
(MHz)		Z @ 100 MHz
(Ω)		Zmax
(Ω)		Test Condition ZmaxIR
(mA)		Z @ 1 GHz
(Ω)		H
(mm)		TypePinsMountL
(mm)		Working Voltage
(V (AC))		Operating Temperature Samples
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