LTC3882

RECOMMENDED FOR NEW DESIGNS

Dual Output PolyPhase Step-Down DC/DC Voltage Mode Controller with Digital Power System Management

Data Sheet (Rev. D) Product Selection Table
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Part Details

  • PMBus/I2C Compliant Serial Interface
    • Monitor Voltage, Current, Temperature and Faults
    • Digitally Programmable Voltage, Current Limit, Soft-Start/Stop, Sequencing, Margining, AVP and UV/OV Thresholds
  • 3V ≤ VINSNS ≤ 38V, 0.5V ≤ VOUT ≤ 5.25V
  • ±0.5% Output Voltage Accuracy
  • Programmable PWM Frequency or External Clock Synchronization from 250kHz to 1.25MHz
  • Accurate PolyPhase® Current Sharing
  • Internal EEPROM with Fault Logging and ECC
  • IC Supply Range: 3V to 13.2V
  • Resistor or Inductor DCR Current Sensing
  • Optional Resistor Programming for Key Parameters
  • 40-Pin (6mm × 6mm) QFN Package
  • AEC-Q100 Qualified for Automotive Applications
LTC3882
Dual Output PolyPhase Step-Down DC/DC Voltage Mode Controller with Digital Power System Management
Efficiency and Power Loss vs Load Current Product Package 1
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 4

Application Note 7

Technical Articles 2

Informational 1

Spec Notice 1

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Software Resources

Device Drivers 1

Hardware Ecosystem

Parts Product Life Cycle Description
Digital Power System Managers 1
LTC2974
RECOMMENDED FOR NEW DESIGNS 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
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Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

  • LTC3882
  • LTC3882-1

Linduino 3

LTpowerCAD 1

Design tools for the following parts are available in LTpowerCAD:

  • LTC3882
  • LTC3882-1

IBIS Model 1

LTpowerPlay®

LTpowerPlay® is a powerful, Windows-based development environment supporting Linear Technology's Digital Power System Management (PSM) products.

Open Tool
LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

LTpowerCAD

LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.

Evaluation Kits

eval board
schematic 1
DC1936A

LTC3882EUJ Demo Board | Dual Buck Voltage Mode Controller with PSM, 7V ≤ VIN ≤ 14V; 0.8V ≤ VOUT0 ≤ 1.8V @ 30A, 0.8V ≤ VOUT1 ≤ 1.8V @ 30A

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Product Details

Demonstration circuit 1936A is a high current, high efficiency, polyphase synchronous buck converter featuring the LTC3882EUJ, a dual output polyphase voltage mode controller. The LTC3882 has the PMBus interface and power system management functions.


The DC1936A uses 6mm × 6mm DrMOS as the power stage. The input range of this board is from 7V to 14V, and the output voltage can be programmed from 0.8V to 1.8V. The DC1936A provides two outputs, with each output capable of 1V/30A. The DC1936A has optional discrete driver (LTC4449EDCB) and MOSFET footprints for high input voltage applications up to 38V. The DC1936A also has an on-board dynamic load circuit, which makes it easy for the customer to evaluate the transient performances.



eval board
schematic 2
DC2291A

LTC3882EUJ Demo Board │LTC3882 (x2) 4-Phase PMBus Buck , 7V ≤ VIN ≤ 14V; 0.5V ≤ VOUT ≤ 2V @ 140A

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Product Details

Demonstration circuit 2291A is a high current, high efficiency, PolyPhase® synchronous buck converter featuring the LTC3882EUJ, a dual output voltage mode controller. This demo board incorporates two LTC3882 controllers which provide four phases to deliver up to 140A. The default output voltage is 1V and can be adjusted from 0.5V to 2V. The LTC3882 has the PMBus interface and digital power system management functions.

eval board
schematic 3
schematic 4
schematic 5
schematic 6
DC2174A-B

LTC3882EUJ Demo Board | Dual Phase Single Output PMBus Buck, 7V ≤ VIN ≤ 14V; 0.5V ≤ VOUT0 ≤ 2V @ 70A

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Product Details

Demonstration circuit 2174A-B is a high current, high efficiency, dual-phase single-output synchronous buck converter featuring the LTC3882EUJ, a dual output voltage mode controller. The DC2174A-B operates with a 7V to 14V input voltage and is configured for 1V output at 70A. The output voltage adjustment range is 0.5V to 2V. The LTC3882 has the PMBus interface and power system management functions.


 


eval board
schematic 7
DC2252A-A

LTC3882EUJ Demo Board | EEPROM Programming Board for LTC3882

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Product Details

Demonstration circuit 2252A-A is a lab tool to program and verify the EEPROM inside the LTC3882 IC. The DC2252A-A is shipped with a LTC3882 placed in the clamshell style programming socket. The EEPROM contains the factory default configuration. The demo system also requires a Windows PC, the DC1613A USB-to-I2C/SMBus/PMBus Controller and the LTpowerPlay software. The LTpowerPlay™ .proj file that corresponds to the factory default can be found in the GUI.

eval board
schematic 8
DC2174A-A

LTC3882EUJ Demo Board | 7V ≤ VIN ≤ 14V; 0.5V ≤ VOUT0 ≤ 2V @ 35A, 0.5V ≤ VOUT1 ≤ 2V @ 35A

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Product Details

Demonstration circuit 2174A-A is a high current, high efficiency, dual-phase dual-output synchronous buck converter featuring the LTC3882EUJ, a dual output voltage mode controller. The DC2174A-A operates with a 7V to 14V input voltage and is configured for 1.5V at 35A and 1V at 35A. The output voltage adjustment range is 0.5V to 2V. The LTC3882 has the PMBus interface and power system management functions.


 
DC1936A
LTC3882EUJ Demo Board | Dual Buck Voltage Mode Controller with PSM, 7V ≤ VIN ≤ 14V; 0.8V ≤ VOUT0 ≤ 1.8V @ 30A, 0.8V ≤ VOUT1 ≤ 1.8V @ 30A
DC1936A - Schematic
DC2291A
LTC3882EUJ Demo Board │LTC3882 (x2) 4-Phase PMBus Buck , 7V ≤ VIN ≤ 14V; 0.5V ≤ VOUT ≤ 2V @ 140A
DC2291A - Schematic
DC2174A-B
LTC3882EUJ Demo Board | Dual Phase Single Output PMBus Buck, 7V ≤ VIN ≤ 14V; 0.5V ≤ VOUT0 ≤ 2V @ 70A
DC2174A-B Evaluation Board DC2174A-B Evaluation Board - Top View DC2174A-B Evaluation Board - Bottom View DC2174A - Schematic
DC2252A-A
LTC3882EUJ Demo Board | EEPROM Programming Board for LTC3882
DC2252A - Schematic
DC2174A-A
LTC3882EUJ Demo Board | 7V ≤ VIN ≤ 14V; 0.5V ≤ VOUT0 ≤ 2V @ 35A, 0.5V ≤ VOUT1 ≤ 2V @ 35A
DC2174A - Schematic

Reference Designs

QorIQ LS1088A-RDB Dev Kit
QorIQ LS1088A-RDB Dev Kit
Qor IQ LS1088-RDB Power Tree
NXP (Freescale) QorIQ LS1088A-RDB Circuits from the lab

View Detailed Reference Design

Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
NXP (Freescale) QorIQ LS1088A-RDB
QorIQ LS1088A-RDB Dev Kit
Qor IQ LS1088-RDB Power Tree

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