Analog Devices LTM4700 | Demoboard DC2784B-A

Description

Demonstration circuit 2784B-A is a high efficiency, high density, μModule® regulator with 4.5V to 16V input range. The output voltage is adjustable from 0.5V to 1.8V and it can supply 200A maximum load current. The demo board has two LTM®4700 μModule regulators, which is a dual 50A or single 100A step-down regulator with digital power system management. See LTM4700 data sheet for more detailed information.The DC2784B-A powers up to default settings and produces 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 graphical user interface (GUI) software LTpowerPlay® onto your PC and use Analog Devices I2C/SMBus/PMBus dongle DC1613A to connect to the board. The 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.

Features

• Dual 50A or Single 100A Digitally Adjustable Outputs with Digital Interface for Control, Compensation and Monitoring
• Wide Input Voltage: 4.5V to 16V
• Output Voltage Range: 0.5V to 1.8V
• ~90% Full Load Efficiency from 12VIN to 1VOUT at 100A
• ±0.5% Maximum DC Output Error Over Temperature
• ±3% Current Readback Accuracy (25°C to 125°C)
• Integrated Input Current Sense Amplifier
• 400kHz PMBus-Compliant I2C Serial Interface
• Supports Telemetry Polling Rates Up to 125Hz
• Integrated 16-Bit ∆Σ ADC
• Constant Frequency Current Mode Control
• Parallel and Current Share Multiple Modules
• 15mm × 22mm × 7.87mm BGA Package
• Readable Data:○ Input and Output Voltages, Currents, and Temperatures○ Running Peak Values, Uptime, Faults and Warnings○ Internal EEPROM and Fault Logging with ECC
• Writable Data and Configurable Parameters:○ Output Voltage, Voltage Sequencing and Margining○ Digital Soft-Start/Stop Ramp○ Optimize Analog Loop Compensation○ OV/UV/OT, UVLO, Frequency and Phasing

Typical applications

More information

• Datasheet
• IC product information