SIC453ED-T1-GE3

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 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.

Applications

• Server, cloud, and infrastructure
• Networking, telecom, storage applications
• Distributed point of load power architectures
• DDR memory

Key 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)
• Continuous current of SiC451 by VOUT range: 30 A at VOUT < 2.5 V; 25 A at VOUT ≥ 2.5 V
• 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
• 0.5% output accuracy at VOUT = 3.3 V/1.8 V, TA = 25 °C
• Ultrafast transient response
• Highly efficient
• 98% peak efficiency
• Optional power save mode
• Highly configurable
• PMBus 1.3 compliant with 1 MHz bus speed
• Internal NVM
• VOUT adjustability and reading resolution of 2 mV
• Supports over 50 PMBus commands
• Supports in phase or 180° out of phase synchronization
• Output voltage source and sink capability
• Robust and reliable
• PVIN, VOUT, IIN and IOUT and temperature reporting
• Over current protection in pulse-by-pulse mode
• Output over and under voltage protection
• Over temperature protection with hysteresis
• Differential output remote sensing