Analog Devices LTM4677 | Demoboard DC2481B-A

Description

Demonstration circuit 2481B-A is a high efficiency, high density, μModule® regulator with 4.5V to 15V input range. The output voltage is adjustable from 0.6V to 1.8V, and it can supply 86A maximum load current. The demo board has 1× LTM4677 and 1× LTM4650 μModule regulators. The LTM4677 is a dual 18A or single 36A step-down regulator with PMBus power system management, and the LTM4650 is a dual 25A or single 50A step-down regulator. Please see LTM4677 and LTM4650 data sheets for more detailed information.DC2481B-A powers up to default settings and produce power based on configuration resistors 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 Analog Devices 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.For more details and instructions of LTpowerPlay, please refer to LTpowerPlay Software GUI.

Features

• Dual, Fast, Analog Loops with Digital Interface for Control and Monitoring
• Wide Input Voltage Range: 4.5V to 16V
• Output Voltage Range: 0.5V to 1.8V
• ±0.5% Maximum DC Output Error Over Temperature
• ±2.5% Current Readback Accuracy
• Pin Compatible with LTM4676A (Dual 13A, Single 26A)
• 400kHz PMBus-Compliant I2C Serial Interface
• Supports Telemetry Polling Rates up to 125Hz
• Integrated 16-Bit ΔΣ ADC
• Constant Frequency Current Mode Control
• Parallel and Current Share Multiple Modules
• 16mm × 16mm × 5.01mm BGA Package
• Readable Data:
• Input and Output Voltages, Currents, and Temperatures
• Running Peak Values, Uptime, Faults and Warnings
• Onboard EEPROM Fault Log Record with ECC
• Writable Data and Configurable Parameters:
• Output Voltage, Voltage Sequencing and Margining
• Digital Soft-Start/Stop Ramp
• OV/UV/OT, UVLO, Frequency and Phasing

Typical applications

• System Optimization, Characterization and Data Mining in Prototype, Production and Field Environments
• Telecom, Datacom, and Storage Systems

More information

• Datasheet
• IC product information