Analog Devices LTC3875EUJ | Demoboard DC2055A

Description

Demonstration circuit 2055A is a high efficiency, high density, 4-phase synchronous buck converter with a 4.5V to 14V input range. It can supply 120A maximum load current at a 1.0V output. This demo board has twoLTC®3875EUJ controllers. The LTC3875 is a feature-rich dual-phase synchronous buck controller with very low DCR current sensing capability, on-chip drivers and remote output voltage sensing. This board is set up with 0.32mΩ DCR inductor. The temperature compensation function canguarantee accurate current limit over a wide temperature range with DCR sensing.The LTC3875 is suitable for inputs from 4.5V to 38V and outputs up to 3.5V. It can provide a high efficiency, high power density and versatile power solution for telecom and datacom systems, industrial and medical instruments,DC power distribution systems and computer systems.The LTC3875 is available in a 40-lead 6mm × 6mm QFN package.To shut down the converter, set the RUN pin voltage below 1.4V (SW1 and SW2: both OFF). Use JP1 jumper to select Burst Mode® operation, pulse-skipping mode or forced continuous mode operation at light load. Switching frequency is pre-set at about 400kHz, and it can be easilymodified from 250kHz to 770kHz. An onboard dynamic circuit is also available for a transient test. Please see LTC3875 data sheet for more detailed information.

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