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Analog Devices µModule regulator combines high power and energy efficient performance, evaluation board and samples available from Anglia

Analog Devices has expanded its suite of Power by Linear™ µModule® regulators with the introduction of the LTM4700 step-down DC/DC power regulator, this device combines the highest power in its class with the energy efficient performance needed to reduce infrastructure cooling requirements such as those employed in data centres and other high power density industrial applications.

The LTM4700 is a dual 50A or single 100A step-down µModule (micromodule) DC/DC regulator featuring remote configurability and telemetry-monitoring of power management parameters over an open standard PMBus I²C-based digital interface protocol. The LTM4700 µModule boasts a highly integrated, component-on-package design which includes onboard memory, data conversion circuitry and digital interface, all housed within a compact, surface-mount 15mm × 22mm × 7.87mm BGA package. The LTM4700 µModule is nearly half the size of competing devices.

Free Dev kit   
Key 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 Sigma-Delta (∆Σ) ADC
  • Constant Frequency Current Mode Control
  • Parallel and Current Share Multiple Modules
  • Compact 15mm × 22mm × 7.87mm BGA Package
Data Data

The LTM4700 can be configured as dual 50A or single 100A output, the µModule’s innovative package technology means designers are able to increase the power density of their applications with minimal impact on system size and cooling costs. The LTM4700 operates at 73°C using innovative heatsink packaging technology, by comparison other similar modular solutions from competitors typically run at 90°C.

The LTM4700 can deliver full 100A at 12VIN to 0.8VOUT with 200 LFM air flow up to 70°C ambient temperature. Peak conversion efficiency reaches 90% at 12VIN to 0.8VOUT. The innovative µModule architecture also enables system designers to combine up to eight devices, this allows delivery of up to 800A of load current to meet the extreme power needs of the latest high performance processors, including FPGAs, ASICs, GPUs and microcontrollers.

The LTM4700 operates from a 4.5V to 16V input range, with output voltages digitally controlled from 0.5V to 1.8V. Integrated A/D converters, D/A converters and EEPROM enable users to digitally monitor, record and control power parameters using the I²C PMBus interface. Switching frequency is synchronized to an external clock from 200kHz to 1MHz for noise-sensitive applications. The LTM4700 also has self and load-protection features against over and undervoltage, overcurrent and overtemperature fault conditions.

The LTM4700’s 2-wire serial interface allows outputs to be margined, tuned and ramped up and down at programmable slew rates with sequencing delay times. Input and output currents and voltages, output power, temperatures, uptime and peak values are readable. Custom configuration of the EEPROM contents is not required, at start-up, output voltages, switching frequency, and channel phase angle assignments can be set by pin-strapping resistors.

Analog Devices’ µModule regulators are ideal for addressing industry challenges associated with limited power supply design expertise, need for reduced PCB size, thermal design constraints, and increased time-to-market pressures. Applications include cloud computing, high-speed computing and optical networking systems, communication infrastructure, and PCIe boards, as well as medical, industrial, and test and measurement equipment.

View the key benefits of the µModule regulators

Demo Boards

Analog devices have a range of demo boards available for the LTM4700 which allow designers to evaluate the full features of the device. Demo boards are available fitted with 1, 2, 3 or 4 x LTM4700 µModule step-down regulators with digital power system management, they can be configured with output currents from 50A up to 400A depending on the board chosen. The demo boards power 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 designers can download the Windows based GUI software LTpowerPlay™ which allows the user to reconfigure the device on the fly, store the configuration in EEPROM and view telemetry of voltage, current, temperature and fault status.

Anglia are offering customers a FREE evaluation board and samples of the LTM4700 µModule step-down DC/DC power regulator from Analog Devices, please fill in the form below to register your interest now.

To register for a FREE Evaluation board and samples of the LTM4700 µModule step-down DC/DC power regulator from Analog Devices, please fill in the form below

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FREE samples for UK and Ireland customers only, subject to availability.

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