LTC3884
LTC3884-1

RECOMMENDED FOR NEW DESIGNS

Dual Output PolyPhase Step-Down Controller with Sub-Milliohm DCR Sensing and Digital Power System Management

Data Sheet (Rev. G) Product Selection Table
Part Models
20
1ku List Price
Starting From $7.49
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Part Details

  • PMBus/I2C Compliant Serial Interface
    • Telemetry Read-Back Includes VIN, IIN, VOUT, IOUT, Temperature and Faults
    • Programmable Voltage, Current Limit, Digital Soft-Start/Stop, Sequencing, Margining, OV/UV/OC
  • Sub-Milliohm DCR Current Sensing
  • Digitally Adjustable Loop Compensation Parameters
  • ±0.5% Output Voltage Accuracy Over Temperature
  • Integrated Input Current Sense Amplifier
  • Internal EEPROM with ECC and Fault Logging
  • Integrated N-Channel MOSFET Gate Drivers (LTC3884)

Power Conversion

  • Wide VIN Range: 4.5V to 38V
  • VOUT Range: 0.5V to 3.5V (with Low DCR Setting); 0.5V to 5.5V (without Low DCR Setting)
  • Accurate PolyPhase® Current Sharing for Up to 6 Phases
  • AEC-Q100 Qualified for Automotive Applications
LTC3884
LTC3884-1
Dual Output PolyPhase Step-Down Controller with Sub-Milliohm DCR Sensing and Digital Power System Management
LTC3884/LTC3884-1 Application Circuit LTC3884/LTC3884-1 Performance Graph LTC3884/LTC3884-1 Pin Configuration LTC3884/LTC3884-1 Pin Configuration LTC3884/LTC3884-1 Pin Configuration
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 6

Application Note 7

Informational 1

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Software Resources

Device Drivers 1

Hardware Ecosystem

Parts Product Life Cycle Description
Digital Power System Managers 1
LTC2975
RECOMMENDED FOR NEW DESIGNS 4-Channel PMBus Power System Manager Featuring Accurate Input Current and Energy Measurement
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Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

  • LTC3884
  • LTC3884-1

LTpowerCAD 3

IBIS Model 1

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
DC2605A

LTC3884ERHE-1, LTC3874EUF-1 Polyphase Single 120A Output Synchronous Buck Converter with Power System Management

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Product Details

Demonstration circuit 2605A is a high efficiency, high density, single-output buck converter with 7V to 14V input range. The output voltage is adjustable from 0.5V to 1.5V, and can supply up to 120A of load current with a 1V output. The demo board features the LTC3884-1paired with a slave controller LTC3874-1 to provide a 4-phase buck converter solution. The LTC3884-1 is a dual output poly phase step-down controller for ultra-low DCR sensing with digital power system management. The LTC3874-1 is a dual PolyPhase® current mode synchronous stepdown slave controller. Please see LTC3884-1 data sheet for more detailed information.

eval board
schematic 2
DC2084A

LTC3884EUK/LTC3874EUFD Demo Board | PolyPhase Digital PSM Buck with Sub-mΩ DCR Sensing Plus Two Slave Controllers, 10V ≤ VIN ≤ 14V, VOUT = 0.5V to 1.5V @ 240A

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Product Details

Demonstration circuit 2084A is a high efficiency, high density, single-output step-down solution featuring the LTC3884 and two LTC3874's. The LTC3884 is a dual output PolyPhase® step-down controller with ultralow DCR sensing and digital power system management. The LTC3874 is a PolyPhase step-down synchronous slave controller also with sub-milliohm DCR Sensing. The combination provides a circuit with a 10V to 14V input voltage range that can supply up to 240A of output current. The default output voltage is 1V, but can be set from 0.5V to 1.5V.


The DC2084A powers up to default settings and produces power based on configuration resistors or with its non-volatile memory without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter. To fully explore the extensive power system management features of the part, download the GUI software LTpowerPlay® and use LTC’s I2C/SMBus/PMBus dongle DC1613A to connect to the board.

eval board
schematic 3
DC2298A

LTC3884 Demo Board I Programming Clamshell Socketed Demo Board

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Product Details

Demonstration circuit 2298A contains the circuitry needed to program and verify the EEPROM of the LTC3884 in the UK package and that is its only purpose. The DC2298A is shipped with a LTC3884 installed in the clamshell style programming socket and its EEPROM contains the factory default configuration. The LTpowerPlay® #.proj file that corresponds to the factory default can be found in the GUI.

eval board
schematic 4
DC2283A

LTC3884EUK Demo Board | LTC3884(×2) 4-Phase PMBus Buck, 7V ≤ VIN ≤ 14V; 0.5V ≤ VOUT ≤ 1.5V @ 160A

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Product Details

Demonstration circuit 2283A is a high efficiency, high density, single-output Buck converter with 7V to 14V input range. The output voltage is adjustable from 0.5V to 1.5V, and can supply up to 160A of load current with a 1V output. The demo board offers the option to be configured as a dual-output converter, contact factory for details. VOUT0 can supply a 40A maximum load current and VOUT1 can supply a 120A maximum load current. The demo board features the LTC3884, a dual output poly phase step-down controller for ultra-low DCR sensing with digital power system management. Please see LTC3884 data sheet for more detailed information.

eval board
schematic 5
DC2165A

LTC3884EUK Demo Board | Dual PMBus Buck, 4.5V ≤ VIN ≤ 14V, VOUT0/VOUT1 = 0.5V to 1.8V @ 30A

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Product Details

LTC3884EUK Demo Board | Dual PMBus Buck, 4.5V ≤ VIN ≤ 14V, VOUT0/VOUT1 = 0.5V to 1.8V @ 30ADemonstration circuit 2165A is a high efficiency, high density, dual-output buck converter with a 4.5V to 14V input range. The output voltage is adjustable from 0.5V to 5.5V, and each output can supply up to 30A of load current when the output voltage is within a 0.5V to 1.8V range. This demo board features the LTC3884, a dual-output poly phase step-down controller with ultra-low DCR sensing and incorporates digital power system management. The LTC3884 data sheet must be read in conjunction with this demo board manual for this demonstration circuit DC2165A.


 


eval board
schematic 6
schematic 7
schematic 8
DC2881A-A

LTC7050/LTC3884-1 2-Phase, Dual-Output Synchronous Buck Converter with Power System Management

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Product Details

Demonstration circuit 2881A-A is a 2-phase dual-output, high efficiency, high density, synchronous buck converter with 7V to 14V input range. Each output can supply up to 30A maximum load current with 1V output. The demo board features the LTC3884-1 controller paired with the LTC7050 dual smart power stage to provide a 2-phase buck converter solution. The LTC3884-1 is a dual output poly phase step-down controller with digital power system management. The LTC7050 is a dual monolithic smart power stage which integrates high speed drivers with low resistance half-bridge power switches plus comprehensive monitoring and protection circuitry in an electrically and thermally optimized package. Please refer to the LTC3884-1 and LTC7050 data sheet for more detailed information.

DC2881A-A powers up to default settings and produces power based on configuration resistors (or with the setting in its non-volatile memory) without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter. To fully explore the extensive power system management features of the part, download the GUI software LTpowerPlay® onto your PC and use ADI’s I2C/SMBus/PMBus dongle DC1613A to connect to the board. LTpowerPlay allows the user to reconfigure the part on the fly and store the configuration in EEPROM, view telemetry of voltage, current, temperature and fault status.
DC2605A
LTC3884ERHE-1, LTC3874EUF-1 Polyphase Single 120A Output Synchronous Buck Converter with Power System Management
DC2605
DC2084A
LTC3884EUK/LTC3874EUFD Demo Board | PolyPhase Digital PSM Buck with Sub-mΩ DCR Sensing Plus Two Slave Controllers, 10V ≤ VIN ≤ 14V, VOUT = 0.5V to 1.5V @ 240A
DC2084A Demo Board Schematic Image
DC2298A
LTC3884 Demo Board I Programming Clamshell Socketed Demo Board
DC2298A Demo Board Image
DC2283A
LTC3884EUK Demo Board | LTC3884(×2) 4-Phase PMBus Buck, 7V ≤ VIN ≤ 14V; 0.5V ≤ VOUT ≤ 1.5V @ 160A
DC2283A - Schematic
DC2165A
LTC3884EUK Demo Board | Dual PMBus Buck, 4.5V ≤ VIN ≤ 14V, VOUT0/VOUT1 = 0.5V to 1.8V @ 30A
DC2165A - Schematic
DC2881A-A
LTC7050/LTC3884-1 2-Phase, Dual-Output Synchronous Buck Converter with Power System Management
DC2881A-A Evaluation Board DC2881A-A Evaluation Board - Top View DC2881A-A Evaluation Board - Bottom View

Reference Designs

Full Power Management (-L Devices)​
Full Power Management (-L Devices)​
Full Power Management (-L Devices) PS Overdrive
Versal Premium Circuits from the lab

Non-Hardware Verified Design

View Detailed Reference Design

Features and Benefits

  • Xilinx Versal™ Premium series solves a broad range of industry-specific problems with performance and flexibility. Core use cases include storage acceleration, data center network acceleration, 5G xHaul and Passive optical networks.

  • Analog Devices, Inc. supports power delivery solutions for the Versal Premium Platform. Monolithic solutions are used on the Versal Premium Platform to power Xilinx FPGA and/or SoC rails as well as other system rails. These regulators are highly integrated discrete solutions optimized for cost, efficiency and footprint.

  • ADI provides supporting documentation including power schematics, layout, LTpowerPlanner® and applicable LTpowerPlay® configuration files to enable you to validate the power solution for your application seamlessly.

  • For a complete list power designs and use cases, please contact your local FAE.

  • Key Power for full management devices are used as follows:

    • LTC3884-1
    • LTC7051
    • ADP5056
    • LTC7132
    • ADP2389
    • ADP5052
    • ADP5054
    • LTC7150S
    • LTC7151S
Versal Premium
Non-Hardware Verified Design
Full Power Management (-L Devices)​
Full Power Management (-L Devices) PS Overdrive

Latest Discussions

2 Years Ago
RE: Request the Value of θJB (theta - JB) of LTC3884
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