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Analog Devices LTC2971 | Demoboard DC2875A
High Voltage Two 2-Channel PMBus Power System Managers with Four Power Supply Rails
Overview
| Topology | Buck Converter |
| Input voltage | 4.5-60 V |
| Output 1 | 0.4 V |
| Output 2 | 0.3 V |
| Output 3 | 0.4 V |
| Output 4 | 0.3 V |
Description
The DC2875A is a demonstration system for the LTC2971 Power System Manager that interfaces to various regulators. The board contains all the circuitry needed to demonstrate a power system that utilizes two 2-channel LTC2971 devices that manage four power supplies. The four power supplies include various switching regulators for the purpose of demonstrating a variety of methods to sense voltage and current. The demo board provides a sophisticated 4-channel digitally programmable power supply system.The LTC2971 is a 2-channel I2C/SMBus/PMBus Power System Manager that features accurate input current and energy measurement and is capable of managing ±60V supplies. The device monitors input current and input voltage, and calculates input power and energy. The DC2875A demonstrates the ability of the LTC2971 to sequence, trim, margin, supervise, monitor, and log faults for four power supplies. The LTC2971 monitors each channel’s output voltage and output current and also monitors each channel’s external temperature sensor and its own internal die temperature.The DC2875A board contains four independent power supply rails. All four rails are based on DC/DC switching regulators. The +36V and +32V channels are managed by an LTC2971 and the ±24V channels are managed by an LTC2971-1. The board is pre-configured with these voltages and may be re-configured with feedback resistors.
Features
- Sequence, Trim, Margin, and Supervise Four Power Supplies
- Manage Faults, Monitor Telemetry, Create Fault Logs
- PMBus Compliant Command Set
- Supported by LTpowerPlay GUI
- Margin or Trim Supplies to 0.25% Accuracy
- Four IOUT and Two IIN Monitors
- Input Power Measurement and Energy Accumulation
- Fast OV/UV Supervisors per Channel
- Multi-Channel Fault Management
- Automatic Fault Logging to Internal EEPROM
- Operates Autonomously without Additional Software
- Monitors: Voltage, Current, Power, Temperature
- 2-Channel Time-Based Output Sequencer
- I2C/SMBus Serial Interface
- Powered from 8V to 18V
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ.(nm) | Emitting Color | λPeak typ.(nm) | IV typ.(mcd) | VF typ.(V) | Chip Technology | 2θ50% typ.(°) | C | Tol. C | VR(V (DC)) | Size | DF(%) | RISO | Ceramic Type | W(mm) | Fl(mm) | Packaging | L(µH) | IRP,40K(A) | ISAT,30%(A) | RDC typ.(mΩ) | VOP(V) | ISAT(A) | RDC max.(mΩ) | Version | ISAT,10%(A) | L1(µH) | L2(µH) | IR(A) | IR 2(A) | ISAT(A) | RDC1 typ(Ω) | RDC2 typ(Ω) | RDC1 max(Ω) | RDC2 max(Ω) | fres(MHz) | Type | Pins | Mount | L(mm) | H(mm) | IR(A) | Working Voltage(V (AC)) | Operating Temperature | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WL-SMCW SMT Mono-color Chip LED Waterclear, 470 nm, Blue | Downloads28 files RAY files
| Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | Dominant Wavelength [typ.]470 nm | Emitting ColorBlue | Peak Wavelength [typ.]465 nm | Luminous Intensity [typ.]145 mcd | Forward Voltage [typ.]3.2 V | Chip TechnologyInGaN | Viewing Angle Phi 0° [typ.]140 ° | – | – | – | Size0603 | – | – | – | Width0.8 mm | – | PackagingTape and Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | MountSMT | Length1.6 mm | Height0.7 mm | – | – | Operating Temperature -40 °C up to +85 °C | |||
| WL-SMCW SMT Mono-color Chip LED Waterclear, 525 nm, Green | 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 ° | – | – | – | Size0603 | – | – | – | Width0.8 mm | – | PackagingTape and Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | MountSMT | Length1.6 mm | Height0.7 mm | – | – | Operating Temperature -40 °C up to +85 °C | |||
| WL-SMCW SMT Mono-color Chip LED Waterclear, 630 nm, Super Red | 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.]630 nm | Emitting ColorSuper Red | Peak Wavelength [typ.]645 nm | Luminous Intensity [typ.]60 mcd | Forward Voltage [typ.]1.9 V | Chip TechnologyAlInGaP | Viewing Angle Phi 0° [typ.]140 ° | – | – | – | Size0603 | – | – | – | Width0.8 mm | – | PackagingTape and Reel | – | – | – | – | – | – | – | Version | – | – | – | – | – | – | – | – | – | – | – | – | – | MountSMT | Length1.6 mm | Height0.7 mm | – | – | Operating Temperature -40 °C up to +85 °C | |||
 | WE-PD SMT Power Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | – | – | – | – | – | – | – | – | – | – | Size7345 | – | – | – | Width7.3 mm | – | – | Inductance47 µH | Performance Rated Current1.8 A | Saturation Current @ 30%1.35 A | DC Resistance170 mΩ | Operating Voltage120 V | Saturation Current1.1 A | DC Resistance260 mΩ | VersionStandard | Saturation Current @ 10%1.1 A | – | – | – | – | – | – | – | – | – | Self Resonant Frequency10.5 MHz | – | Pins2 | MountSMT | Length7.3 mm | Height4.5 mm | Rated Current1.03 A | – | Operating Temperature -40 °C up to +125 °C | ||||
| WE-PD SMT Power Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | – | – | – | – | – | – | – | – | – | – | Size6033 | – | – | – | Width6.2 mm | – | – | Inductance33 µH | Performance Rated Current1.05 A | Saturation Current @ 30%1.05 A | DC Resistance340 mΩ | Operating Voltage120 V | Saturation Current0.9 A | DC Resistance400 mΩ | VersionRobust | Saturation Current @ 10%0.9 A | – | – | – | – | – | – | – | – | – | Self Resonant Frequency17 MHz | – | – | MountSMT | Length5.9 mm | Height3.3 mm | – | – | Operating Temperature -40 °C up to +125 °C | ||||
 | WE-MAPI SMT Power Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-MAPI SMT Power Inductor | – | – | – | – | – | – | – | – | – | – | Size3015 | – | – | – | Width3 mm | – | – | Inductance33 µH | Performance Rated Current0.7 A | Saturation Current @ 30%1.7 A | DC Resistance1210 mΩ | Operating Voltage80 V | Saturation Current1.3 A | DC Resistance1330 mΩ | VersionSMT | Saturation Current @ 10%0.9 A | – | – | – | – | – | – | – | – | – | Self Resonant Frequency10 MHz | – | Pins2 | MountSMT | Length3 mm | Height1.5 mm | Rated Current0.5 A | – | Operating Temperature -40 °C up to +125 °C | ||||
 | WE-LHMI SMT Power Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | – | – | – | – | – | – | – | – | – | – | Size1040 | – | – | – | Width10 mm | – | – | Inductance33 µH | Performance Rated Current3.75 A | Saturation Current @ 30%7.4 A | DC Resistance92 mΩ | Operating Voltage120 V | – | DC Resistance112 mΩ | VersionSMT | Saturation Current @ 10%3.3 A | – | – | – | – | – | – | – | – | – | Self Resonant Frequency6 MHz | – | – | MountSMT | Length11 mm | Height3.8 mm | – | – | Operating Temperature -40 °C up to +125 °C | ||||
 | WE-DD SMT Shielded Coupled Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-DD SMT Shielded Coupled Inductor | – | – | – | – | – | – | – | – | – | – | Size7345 | – | – | – | Width7.3 mm | – | – | Inductance100 µH | – | – | – | Operating Voltage80 V | Saturation Current0.9 A | DC Resistance1300 mΩ | – | – | Inductance 1100 µH | Inductance 2100 µH | Rated Current0.65 A | Rated Current 20.65 A | Saturation Current0.9 A | DC Resistance 11.029 Ω | DC Resistance 21.029 Ω | DC Resistance 11.3 Ω | DC Resistance 21.3 Ω | Self Resonant Frequency4 MHz | TypeStraight | – | – | Length7.3 mm | Height4.8 mm | Rated Current0.65 A | – | Operating Temperature -40 °C up to +125 °C | ||||
| WCAP-CSGP MLCCs 10 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 10 V(DC) | – | – | – | – | – | – | – | Capacitance4.7 µF | Capacitance±20% | Rated Voltage10 V (DC) | Size0603 | Dissipation Factor10 % | Insulation Resistance0.02 GΩ | Ceramic TypeX5R Class II | Width0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Length1.6 mm | Height0.8 mm | – | – | Operating Temperature -55 °C up to +85 °C | |||||
 | WR-PHD Jumper, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Jumper | – | – | – | – | – | – | – | – | – | – | – | – | Insulation Resistance1000 MΩ | – | – | – | PackagingBag | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 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 | – | – | – | – | – | – | – | – | – | – | – | – | Insulation Resistance1000 MΩ | – | – | – | PackagingBag | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | TypeStraight | Pins3 | MountTHT | Length6 mm | – | Rated Current2 A | Working Voltage200 V (AC) | Operating Temperature -40 °C up to +105 °C |