1 Suggested DC/DC Converters

Table 1-1 highlights the latest point-of-load DC/DC converters with integrated FETs that are applicable to Whitley and Cedar Island applications; however, they are designed to accommodate the requirements for a wide range of markets. These devices are designed to achieve fast transient response, high efficiency, good thermal performance, and high output voltage accuracy. Notice that different control architectures are suggested in the chart. Fixed-frequency control architectures provide a predictable switching frequency and can be synchronized to an external clock. Current mode and voltage mode control are desirable in noise-sensitive applications that use data converters and high-speed analog circuits. On the other hand, devices implementing constant on-time control deliver a faster transient response than voltage or current mode control to quickly changing loads, since there is no internal clock to control the switcing frequency. Several devices feature PMBus or I²C with Serial Voltage Identification (SVID), adaptive voltage scaling and margining. Devices integrating PMBus or I²C with telemetry report voltage, current, and temperature information to a host.