The LTC3787IGN#TRPBF is a single dual-phase, high-efficiency, constant frequency, synchronous, step-down switching regulator controller from Analog Devices. It can deliver up to 40A of output current, and can be configured for voltage or current mode operation. It provides up to 98% efficiency, as well as current mode control for improved transient response and loop stability. Other features include adjustable switching frequency, soft-start, over current, over voltage and thermal shutdown. This regulator is available in a 20-lead thermally enhanced, TSSOP power package.