DC2121A - LTM4634 Demo Board | Triple, 4.75V ≤ VIN ≤ 28V, Vout1/Vout2 = 0.8V to 5.5V @ 5A, Vout3 = Up to 13.5V @ 4A

Demonstration circuit 2121A features the LTM®4634, a high efficiency, triple 5A/5A/4A step-down power μModule regulator. The input voltage range is from 4.75V to 28V. The output voltage range is 0.8V to 5.5V for Channel 1 and Channel 2, 0.8V to 13.5V for Channel 3. Derating is necessary for certain V_IN, V_OUT, frequency and thermal conditions. The DC2121A offers access to the TK/SS pins allowing the user to program output tracking or soft-start period. The board operates in continuous conduction mode in heavy load conditions.

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
- LTM4634 Demo Circuit - Triple 5A/5A/4A µModule Buck Regulator (4.8-28V to 1.0V, 3.3V @ 5A & 12.0V @ 4A)
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.

LTpowerCAD

The LTpowerCAD design tool is a complete power supply design tool program that can significantly ease the tasks of power supply design. It guides users to a solution, selects power stage components, provides detailed power efficiency, shows quick loop bode plot stability and load transient analysis, and can export a final design to LTspice for simulation. Click here to download LTpowerCAD

To open the project file for this circuit:

Step 1: If you have not installed LTpowerCAD on this computer, download and install LTpowerCAD
Step 2: Once LTpowerCAD is installed, click on the link(s) below to open the project file
- LTM4634 Project - Triple Output Step-Down μModule Regulator (13-28V to 1V @ 5A, 3.3V @ 5A, 12V @ 4A)
Step 3: If LTpowerCAD does not automatically open after clicking the link above, you can open the project file by right clicking on the link and selecting "Save Target As." After saving the file to your computer, start LTpowerCAD and open the project file by selecting 'Open Project' from the 'File' menu