SiC450, SiC451, SiC453
www.vishay.com Vishay Siliconix 4.5 V to 20 V Input, 15 A, 25 A, 40 A
microBuck® DC/DC Converter With PMBus Interface
FEATURES
• Versatile LINKS TO ADDITIONAL RESOURCES
Evaluation
Boards Design Tools DESCRIPTION
The SiC45x is a PMBus 1.3 compliant non-isolated DC/DC
buck regulator with integrated MOSFETs. It is capable of
supplying up to 40 A (SiC450) continuous output current. Its
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.
SiC45x architecture delivers ultrafast transient response
with minimum output capacitance and tight regulation over
a broad load range. The device has integrated internal
compensation and is stable with any type of output
capacitor. The device incorporates a power saving scheme
that significantly increases light load efficiency.
The SiC45x allows power block configuration programs to
be stored in non volatile memory (NVM). Various operation
parameters can all be locally stored and used to determine
fault behavior. Operation is firmware based and is field …
