Demonstration circuits feature two high-efficiency and high output current step-down converters

01-10-2019 | Analog Devices | Design & Manufacture

Analog Devices by Linear Technology DC2631A Demonstration Circuits feature two LTC7852 high-efficiency and high output current step-down converters, each with corresponding assembly type.

The power stage for each phase consists of a 5mm x 5mm DrMOS and 11.3mm x 11mm 0.25┬ÁH ferrite inductor with a DCR of 0.32mOhm typical. The device employs a peak current mode architecture which enables accurate DCR sensing and sharing with sub-mOhm DCR inductors. The device offers a three-state compatible PWM output for each DrMOS.

These demonstration circuits provide differential sensing for the output voltages VOUT1 and VOUT2. The demonstration circuits also provide IMON pins to monitor the inductor current of each rail. The converter for the -A assembly provides two three-phase outputs of 1V/100A and 1.5V/100A while the -B assembly offers a single six-phase 1V/200A output. Both converters operate from a 7V to 14V input voltage range at a switching frequency of 400kHz.

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