Analog Devices LTC3860EUH | Demoboard DC1184A

Description

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.

The demo board uses a high density, two sided drop-in layout. The power components, excluding the bulk output and input capacitors, fit within a 1.5” x 1.25” area on the top layer. The control circuit resides in a 0.75” x 0.75” area on the bottom layer. The package style for the LTC3860EUH is a 32-lead 5mm x 5mm QFN.

Features

• Differential amplifier for remote sensing VOUT1 which is setup for 1.2V.
• Optional components for single output dual phase operation.
• CLKIN pin for synchronization to an external clock which can be used in conjunction with optional PHSMD resistors and CLKOUT pin for up to 12-phase operation.
• TRACK/SS pins for external coincident rail tracking.
• RUN pins and PGOOD pins for each phase.
• For each phase, optional footprints for an LTC4449 gate driver and two top FETs and twobottom FETs.

More information

• Datasheet
• IC product information