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Analog Devices Ltd

Analog Devices Ltd

Analog Devices, Inc. operates at the centre of the modern digital economy, converting real-world phenomena into actionable insight with its comprehensive suite of analogue and mixed signal, power management, radio frequency (RF), and digital and sensor technologies. ADI serves 125,000 customers worldwide with more than 75,000 products in the industrial, communications, automotive, and consumer markets. ADI is headquartered in Wilmington, MA. Visit www.analog.com. Both Linear Technology and Maxim Integrated are now part of Analog Devices.

Analog Devices provide efficient solutions for power management and power conversion applications in the automotive, telecommunications, industrial, medical, computing, military and high-end consumer markets using high-performance analogue ICs. Our power ICs can provide unrivalled power densities and software design simulation tools to provide both fast and accurate power module and power supply designs.

Products for power management include: switching regulators, linear regulators (LDO), µModule regulators, PMIC & Multifunction, inductorless (charge pump) DC/DC converters, LED driver ICs, power control, battery management,  current source, system supervisor, hot-swap controllers,  monitor and control, energy harvesting, super capacitor chargers and power management evaluation kits.

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50A µModule Regulator Scalable to 250A Runs Cool with Inductors Exposed as Heatsinks

50A µModule Regulator Scalable to 250A Runs Cool with Inductors Exposed as Heatsinks

30 July 2018

NORWOOD, MA – July 26, 2018 – Analog Devices announces the Power by Linear™ LTM4678 dual 25A or single 50A step-down µModule® regulator with PMBus digital interface. By stacking and exposing its two inductors on top of BGA package, the LTM4678 uses the inductors as heat sinks to transfer heat from inside, keeping the device cool. Onboard EEPROM and PMBus I2C enables a user to measure, alter and record key power parameters such as voltage, load current, temperature and sequencing.  Five LTM4678s can current share at 50A each to deliver up to 250A to loads such as processors, FPGAs and ASICSs. Applications include PCIe boards, communication infrastructure, cloud computing, optical as well as medical, industrial and test and measurement devices.

The LTM4678 integrates a DC/DC controller, EEPROM, power FETs, inductors and supporting components in a 16mm x 16mm x 5.86mm BGA package. Output voltage accuracy of ±0.5% is guaranteed over line, load and temperature  

(–40°C to 125°C).

The LTM4678 operates from 4.5V to 16V input range, and the two output voltages are digitally controlled from 0.5V to 3.3V. The LTM4678 achieves 90% peak efficiency from 12VIN and 0.9VOUT at 50A. It delivers 40A at 12VIN to 0.9VOUT at 70°C ambient with 200LFM air flow. The switching frequency is 350kHz to 1MHz and can be synchronized to an external clock from 350kHz to 1MHz for noise sensitive applications.

The LTM4678’s high power density and scalability make it ideal for the PCB area constraints of densely populated system boards to power the low-voltage & high-current advanced digital devices. For more information, visit www.analog.com/LTM4678.

Summary of Features: LTM4678

  • PMBus Digital Interface for Control, Telemetry & Monitoring of Operating Parameters
  • Dual 25A or Single 50A Output Current with Current Sharing & Scalable up to 250A
  • Wide Input Voltage Range: 4.5V to 16V
  • Output Voltage Range: 0.5V to 3.3V
  • ±0.5% Voltage Set Point Accuracy & ±5% Current Readback Accuracy
  • Onboard EEPROM
  • Thermally Enhanced 16mm x 16mm x 5.86mm BGA Package

Pricing & Availability

Product

Production

Availability

Price Each per 1,000

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LTM4678

Now

Starts at $47.48

Thermally Enhanced 16mm x 16mm x 5.86mm BGA

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