LTM4681 Regulator

ADI's LTM4681 is a quad 31.25 A or single 125 A step-down μModule (power module) DC-to-DC regulator featuring remote configurability and telemetry-monitoring of power management parameters over PMBus. The LTM4681 is comprised of digitally programmable analog control loops, precision mixed-signal circuitry, EEPROM, power MOSFETs, inductors, and supporting components.

The LTM4681’s 2-wire serial interface allows outputs to be margined, tuned, and ramped up and down at programmable slew rates with sequencing delay times. True input current sense, 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. The LTpowerPlay® GUI and DC1613 USB-to-PMBus converter and demo kits are available.

The LTM4681 is offered in a 15 mm x 22 mm x 8.17 mm BGA package available with SnPb or RoHS compliant terminal finish.

Features

• Configurable quad outputs provide flexibility for use as quad, triple, dual, or single output
• Parallel and current share multiple modules for higher current, reach up to 1000 A with the minimum solution size in the market
• Digital power supply management allows user to command and supervise a system’s power condition and consumption via a digital bus, reducing time to market and downtime