The three key differentiating features of the ISL68200 and ISL68201 are ease of use, high performance and PMBus support. Because the controllers are completely configurable with external resistor settings, the need for NVM programming has been removed. This, coupled with the compensation free control loop, makes both the ISL68200 and ISL68201 easy to use. The R4 modulator at the heart of these controllers offers industry leading transient performance, and has built-in light load efficiency modes of operation. These two features combine to make these controllers high performance. Finally, built-in PMBus support allows the user to read back supply telemetry, including Vin, Vout, Iout, and temperature. PMBus can also be used to adjust the Vout setpoint on the fly, and during board bring-up, included fault reporting bits speed board debug.