Datasheet SiC450 (Vishay)

制造商Vishay
描述4.5 V to 20 V Input, 40 A microBuck DC/DC Converter With PMBus Interface
页数 / 页48 / 1 — SiC450, SiC451, SiC453. 4.5 V to 20 V Input, 15 A, 25 A, 40 A. microBuck® …
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SiC450, SiC451, SiC453. 4.5 V to 20 V Input, 15 A, 25 A, 40 A. microBuck® DC/DC Converter With PMBus Interface. FEATURES

Datasheet SiC450 Vishay

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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 - Single supply operation from 4.5 V to 20 V input voltage - Scalable solution with continuous output current of 40 A (SiC450), 25 A (SiC451), 15 A (SiC453) - Adjustable output voltage from 0.3 V to 12 V - Built in 5 V regulator for internal circuits and driver supply - 1 % output voltage accuracy over temperature - Ultrafast transient response
LINKS TO ADDITIONAL RESOURCES
• Highly efficient - 98 % peak efficiency
Design Tool Evaluation Design Tools
- Optional power save mode
Boards
• Highly configurable
DESCRIPTION
- PMBus 1.3 compliant with 1 MHz bus speed The SiC45x is a PMBus 1.3 compliant non-isolated DC/DC - Internal NVM buck regulator with integrated MOSFETs. It is capable of - VOUT adjustability and reading resolution of 2 mV supplying up to 40 A (SiC450) continuous output current. Its - Supports over 50 PMBus commands output voltage is digitally adjustable from 0.3 V to 12 V from - Supports in phase or 180° out of phase synchronization a 4.5 V to 20 V input with switching frequencies up to 1.5 MHz. - Output voltage source and sink capability • Robust and reliable SiC45x architecture delivers ultrafast transient response with minimum output capacitance and tight regulation over - PVIN, VOUT, IIN and IOUT and temperature reporting a broad load range. The device has integrated internal - Over current protection in pulse-by-pulse mode compensation and is stable with any type of output - Output over and under voltage protection capacitor. The device incorporates a power saving scheme - Over temperature protection with hysteresis that significantly increases light load efficiency. - Differential output remote sensing The SiC45x allows power block configuration programs to be stored in non volatile memory (NVM). Various operation
APPLICATIONS
parameters can all be locally stored and used to determine • Server, cloud, and infrastructure fault behavior. Operation is firmware based and is field • Networking, telecom, storage applications upgradable Pinstrap option is also available for default • Distributed point of load power architectures configuration without PMBus. • DDR memory The SiC45x is available in lead (Pb)-free power enhanced MLP 5 mm x 7 mm package. Axis Title 98 10000
TYPICAL APPLICATION CIRCUIT
96 PGOOD 94 ENABLE ) 92 1000 EN P BO (% G INPUT OOD V O PH 2.5 V IN 4.5 V to 20 V V T o 3.3 Vo 5 Vo OUT ine 90 ne PV SW ne IN 2nd l fficiency 88 1st li E 2nd li SiC45x PV V 86 100 CC SEN+ eff - V V V IN = 12 V DD SEN- 84 F ADDR SALRT sw = 600 kHz RT/SYNC SDA V 82 SET SCL ND ND G G A P 80 10 0 5 10 15 20 25 30 35 40 IOUT - Output Current (A)
Fig. 1 - Typical Application Circuit Fig. 2 - SiC450 Efficiency Curve
S21-0213-Rev. B, 08-Mar-2021
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Document Number: 77863 For technical questions, contact: powerictechsupport@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000