The default switching frequencies of 30kHz or 600kHz can be set by tying the RT pin directly to ground or VCC. The ISL8215M can also be easily configured to operate over a range of 300kHz to 2MHz by connecting the RT pin to ground using a resistor. This flexibility can not only serve to operate in a specific frequency band when EMI is a concern, but also be used to optimize efficiencies and transient response for a given conversion ratio and load step when powering microcontrollers, FGPAs, or DSPs that require a burst of power for a short period of processing time. Capable of achieving a peak efficiency of 96.5%, the ISL8215M is easily tuned to provide high efficiency over a wide range of output currents and conversion ratios. During the light load conditions, roughly below 2A, the ISL8215M can selectively enter pulse skipping mode (PSM) which reduces the switching losses by effectively reducing the switching frequency and therefore increasing the converter efficiency.