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Analog Devices LTC3887 | Demoboard DC2454A
LTC3887EUJ-1/LTC3870EUF-1 Poly-Phase Step-Down DC/DC Controller with Power System Management
Overview
| Topology | Buck Converter |
| Input voltage | 7-14 V |
| Output 1 | 1.8 V / 100 A |
| IC revision | A |
Description
Demonstration circuit 2454A is a high current, high efficiency,poly-phase synchronous buck converter featuringthe LTC®3887EUJ-1, a dual-phase current mode controller,and the LTC3870EUF-1, a dual-phase slave controller. TheLTC3887-1 has the PMBus interface and the power systemmanagement functions.The DC2454A uses DrMOS in the power stage and inductorDCR sensing. The input voltage range of this board is from7V to 14V, and the output voltage can be programmedfrom 0.8V to 1.8V. The output current is up to 100A with4-phase operation. The factory default setting for theoutput is 1.0V. This demo board also has an on-boarddynamic load circuit, which makes it easy to evaluate thetransient performances.The DC2454A powers up to default settings and producespower based on configuration resistors or NVM withoutthe need for any serial bus communication. This allowseasy evaluation of the DC/DC converter aspects of the LTC3887-1. To fully explore the extensive power systemmanagement features, download the GUI softwareLTpowerPlay® onto your PC and use LTC’s I2C/SMBus/PMBus Dongle DC1613A to connect to the board.LTpowerPlay allows the user to reconfigure the part on thefly and store the configuration in EEPROM, view telemetryof voltage, current, temperature and fault status.
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | f(mm) | λDom typ.(nm) | Emitting Color | λPeak typ.(nm) | IV typ.(mcd) | VF typ.(V) | Chip Technology | 2θ50% typ.(°) | L(µH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC(mΩ) | fres(MHz) | Material | Pins | Type | Mount | L(mm) | H(mm) | IR(A) | Working Voltage(V (AC)) | Operating Temperature | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-HCI SMT Flat Wire High Current Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | – | – | – | – | – | – | – | – | Inductance0.15 µH | Performance Rated Current56.4 A | Saturation Current @ 10%20 A | Saturation Current @ 30%60 A | DC Resistance0.58 mΩ | Self Resonant Frequency275 MHz | MaterialWE-PERM | Pins2 | – | MountSMT | Length10.5 mm | Height4 mm | – | – | Operating Temperature -40 °C up to +155 °C | ||||
 | WL-SMCW SMT Mono-color Chip LED Waterclear, –, 525 nm | Downloads27 files RAY files
| Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | – | Dominant Wavelength [typ.]525 nm | Emitting ColorGreen | Peak Wavelength [typ.]515 nm | Luminous Intensity [typ.]430 mcd | Forward Voltage [typ.]3.2 V | Chip TechnologyInGaN | Viewing Angle Phi 0° [typ.]140 ° | – | – | – | – | – | – | – | – | – | MountSMT | Length1.6 mm | Height0.7 mm | – | – | Operating Temperature -40 °C up to +85 °C | |||
 | WA-SNSR Self-Retaining Spacer, 4.8 mm, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWA-SNSR Self-Retaining Spacer | Drilling in Panel4.8 mm | – | – | – | – | – | – | – | – | – | – | – | – | – | MaterialPA66 | – | – | – | Length15.9 mm | – | – | – | Operating Temperature -30 °C up to +85 °C | |||
 | WR-PHD Jumper, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Jumper | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Pins2 | – | – | – | – | Rated Current3 A | Working Voltage200 V (AC) | Operating Temperature -25 °C up to +105 °C | |||
 | WR-PHD Pin Header, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Pins3 | TypeStraight | MountTHT | Length6 mm | – | Rated Current2 A | Working Voltage200 V (AC) | Operating Temperature -40 °C up to +105 °C |