Four Paralleled LTM4675 Producing 1Vout at Up to 70A with PMBus

The LTM®4675 is a dual 9A or single 18A step-down μModule® (micromodule) DC/DC regulator with 70ms turn-on time. It features remote configurability and telemetry-monitoring of power management parameters over PMBus— an open standard I²C-based digital interface protocol . The LTM4675 is comprised of fast analog control loops, precision mixed-signal circuitry, EEPROM, power MOSFETs, inductors and supporting components.

Software

LTspice

LTspice^® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

To launch a ready to run LTspice demonstration circuit for this part:

Step 1: If you have not installed LTspice on this computer, download and install LTspice
Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
- LTM4675 Demo Circuit - Paralleled µModule Buck Regulator with Digital Interface (10-14V to 1V @ 72A)
Step 3: If LTspice does not automatically open after clicking the link above, you can instead run the simulation by right clicking on the link and selecting "Save Target As." After saving the file to your computer, start LTspice and open the demonstration circuit by selecting 'Open' from the 'File' menu

To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.