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Solutions Power Management Switching Regulator Step-Down (Buck) Regulators Multiple Output Buck
Solutions Power Management Switching Regulator Step-Down (Buck) Regulators Internal Power Switch Buck
Solutions DC Regulator Solutions DC-DC Voltage Regulation Step Down DC-DC Solutions (Vin > Vout)

DC1895A - LTC3633AEUFD Demo Board | Dual Buck, 3.6V ≤ VIN ≤ 20V, Vout1 = 1.2V/1.5V1.8V @ 3A, Vout2 = 2.5V/3.3V/5V @ 3A

Demonstration circuit DC1895 is a dual output regulator consisting of two constant-frequency step-down converters, based on the LTC3633A monolithic dual channel synchronous buck regulator. The DC1895 has an input voltage range of 3.6V to 20V, with each regulator capable of delivering up to 3A of output current. The DC1895 can operate in either Burst Mode® operation or forced continuous mode. In shutdown, the DC1895 can run off of less than 15μA total. The DC1895 is a very efficient circuit: over 90% for either circuit. The DC1895 uses the 28-Pin QFN LTC3633AEUFD package, which has an exposed pad on the bottom-side of the IC for better thermal performance. These features, plus a programmable operating frequency range from 500kHz to 4MHz (2MHz switching frequency with the RT pin connected to INTVCC), make the DC1895 demo board an ideal circuit for use industrial or distributed power applications.

DC1895A - Schematic

 


Software

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
  • 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

View More Step Down DC-DC Solutions (Vin > Vout) Solutions

LTM4627EV Demo Board | LTM4627(x4), Paralleled, Polyphase, 4.5V ≤ VIN ≤ 20V, VOUT = 0.6V to 3.3V @ 50A
LTC3774EUHE Demo Board | Sync Buck Controller, 4-Phase (LTC3774 x2), 10V ≤ VIN ≤ 14V, Vout = 1.2V @ 120A

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