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DC1184A - LTC3860EUH Demo Board |10V to 14VIN, 1.2V/25A and 1.8V/25A VOUT

Demonstration circuit DC1184A is a dual output voltage mode synchronous buck converter featuring the LTC3860EUH. This board provides two outputs of 1.2V/25A and 1.8V/25A from an input voltage of 10V to 14V at a switching frequency of 500kHz. The power stage consists of the Renesas R2J20602NP which is a tri-state PWM compatible 8mm x 8mm DrMOS and a 0.47uH 13.2mm x 12.8mm iron powder type inductor from Wurth. An on-board 5V LT1616 buck regulator provides the 5V bias for the LTC3860 and the DrMOS.

LT Journal

• LTC3860 Project - Dual, 2-Phase Step-Down Voltage Mode Supply (10-14V to 1.2V & 1.8V @ 25A)

Demo Board Design File

• DC1184A - Design Files

Demo Board Manual

• DC1184A - Demo Manual

Demo Board Schematic

• DC1184A - Schematic

LTspice

• LTC3860/LTC4449 Demo Circuit - Dual, Multiphase Step-Down Voltage Mode Controller with Current Sharing (4-14V to 1.2V @ 25A & 1.8V @ 25A)

Products

• LTC3860 Project - Dual, 2-Phase Step-Down Voltage Mode Supply (10-14V to 1.2V & 1.8V @ 25A)
• DC1184A - Design Files
• LTC3860 - Dual, Multiphase Step-Down Voltage Mode DC/DC Controller with Current Sharing