The SiC951EVB-A reference board from Vishay enables a design engineer to evaluate the features and functions of the SiC951 microBRICK® dc-dc regulator module. It also serves as a reference board design for use in applications.
The SiC951 is an integrated module which requires no external inductor, and only minimal additional components. Compliant with the PMBus 1.3 signaling protocol, this non-isolated buck regulator with integrated MOSFETs and inductor is housed in a 10.6 mm x 6.5 mm x 3 mm package. The regulator supplies a continuous output current of up to 25 A, and 30 A peak.
The output voltage is digitally adjustable in a range from 0.3 V to 5.5 V from a 4.5 V to 20 V input. The regulator operates at switching frequencies up to 1.5 MHz. The architecture of the SiC951 provides a very fast transient response with minimum output capacitance and tight regulation over a broad load range.
The SiC951 has integrated internal compensation and is stable with any type of output capacitor. It incorporates a power-saving scheme which substantially increases light-load efficiency.
The SiC951 allows configuration programs to be stored in non-volatile memory. Operating parameters such as output voltage and output current can be locally stored and used to determine fault behavior. Configuration is firmware-based and field-upgradable.
