SiC951www.vishay.com Vishay Siliconix
4.5 V to 20 V Input, 25 A microBRICK® DC/DC Regulator Module With PMBus Interface FEATURES• Versatile - Single supply operation from 4.5 V to 20 V input voltage - Output current: 25 A continuous with 30 A peak - Adjustable output voltage from 0.3 V to 5.5 V - Built in 5 V regulator for internal circuits and driver supply - 1 % output voltage accuracy over temperature • Highly efficient - Close to 97 % peak efficiency • Highly configurable Top view Bottom view - PMBus 1.3 compliant with 1 MHz bus speed
LINKS TO ADDITIONAL RESOURCES- Internal NVM - VOUT adjustability and reading resolution of 2 mV - Supports over 50 PMBus commands
Design Tool Evaluation Design Tools Boards- Ability to support sequential, tracking and simultaneous operation
DESCRIPTION- Supports in phase or 180° out of phase synchronization The SiC951 is a PMBus 1.3 compliant non-isolated - Output voltage source and sink capability DC/DC buck regulator module with integrated MOSFETs • Robust and reliable and inductor in a 10.6 mm x 6.5 mm x 3 mm thermally efficient package. It is capable of supplying 25 A - VIN, VOUT and temperature reporting over PMBus continuously with 30 A peak. Its output voltage is digitally - Over current protection in pulse-by-pulse mode adjustable from 0.3 V to 5.5 V from a 4.5 V to 20 V input with - Output over voltage protection switching frequencies up to 1.5 MHz. The SiC951 can - Output under voltage protection accommodate a variety of applications, including - Over temperature protection with hysteresis computing, consumer electronics, telecom, and industrial. - Dedicated enable pin for easy power sequencing SiC951 architecture delivers ultrafast transient response with minimum output capacitance and tight regulation over - Power good open drain output a broad load range. The device has integrated internal - Remote sense amplifier with true differential voltage compensation and is stable with any type of output sensing capacitor. The device incorporates a power saving scheme - Ultrafast transient response that significantly increases light load efficiency. - Optional power saving mode The SiC951 allows power block configuration programs to be stored in non volatile memory (NVM). Operation
APPLICATIONSparameters such as VOUT, IOUT, over temperature etc. can all • Servers be locally stored and used to determine fault behavior. • Networking, telecom, storage applications Operation is firmware based and is field upgradable. • Ultrabook, notebook, desktop The SiC951 is available in lead (Pb)-free power enhanced • Distributed point of load power architectures MLP59-A6C package. • Storage applications A full featured GUI and interface board is available to program and facilitate development of SiC951 based • DDR memory systems. S23-0736-Rev. C, 12-Sep-2023
1Document Number: 71554 For technical questions, contact:
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