Vishay microBUCK® Regulators
Increase power density and transient response with output current up to 40 A in a compact PowerPAK® package
The Vishay SiC45x is a PMBus 1.3 compliant non-isolated DC/DC buck regulator with integrated MOSFETs. Capable of supplying up to 40 A (SiC450) continuous output current, the SiC45x output voltage is digitally adjustable from 0.3 V to 12 V from a 4.5 V to 20 V input with switching frequencies up to 1.5 MHz.
Vishay’s SiC45x architecture delivers ultrafast transient response with minimum output capacitance and tight regulation over a broad load range. The regulator has integrated internal compensation and is stable with any type of output capacitor. The SiC45x incorporates a power saving scheme that significantly increases light load efficiency.
Allowing power block configuration programs to be stored in non-volatile memory (NVM), various operation parameters of the Vishay SiC45x can all be locally stored and used to determine fault behavior. Operation is firmware-based and a field upgradable Pinstrap option is also available for default configuration without PMBus.
The SiC45x is available in lead (Pb)-free power enhanced MLP 5 mm x 7 mm package.
SiC45x Typical Application Circuit