DC-DC Power Regulator Eases Data Center Cooling Costs

Analog Devices (ADI) has expanded its suite of Power by Linear µModule regulators with the LTM4700 step-down DC/DC power regulator. The device features energy efficient performance that reduces data center infrastructure cooling requirements. Configured as dual 50 A or single 100A configuration, the power µModule’s packaging technology enables an increasing server density and boosts data center throughout and computational power with minimal impact on system size and cooling costs.

The LTM4700 µModule’s highly integrated, component-on-package design includes on-board memory, data conversion circuitry and digital interface, reducing it to nearly half the size of competing devices, according to ADI. 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.

The LTM4700 operates at 73°C using heatsink packaging technology. That’s much cooler compared to modular solutions from competitors which typically run at 90°C, says ADI. The device can deliver full 100 A at 12 VIN to 0.8 VOUT with 200 LFM air flow up to 70°C ambient temperature. Peak conversion efficiency at 12 VIN to 0.8 VOUT reaches 90%.  The µModule’s architecture also enables system designers to combine up to eight devices, delivering up to 800A of load current to meet the higher power needs of data center processors, including FPGAs, ASICs, GPUs and microcontrollers.

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

Summary of Features:

  • Dual 50 A or Single 100 A Digitally Adjustable Outputs with Digital Interface for Control, Compensation and Monitoring
  • Wide Input Voltage: 4.5 V to 16 V
  • Output Voltage Range: 0.5 V to 1. 8V
  • ~90% Full Load Efficiency from 12 VIN to 1 VOUT at 100 A
  • ±0.5% Maximum DC Output Error Over Temperature

Pricing for LTM4700 starts at $97.26 (1,000s) in a 15 mm x 22 mm x 7.87 mm BGA package.

Analog Devices | www.analog.com

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