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SiC461EVB: 5V @ 10A, 7 ~ 60V in, Buck

Summary

The SiC461EVB reference board allows the user to evaluate the SiC461 microBUCK® IC regulators for their features and functionalities. It can also be a reference design for a user's application. The board is configured for 4.5 V to 60 V input. Output is model dependent. The operating range may be modified by changing components such as the inductor, feedback resistor, and ripple injection networks.

The SiC46x family of microBUCK regulators is a wide input voltage high efficiency synchronous buck regulator with integrated high-side and low-side power MOSFETs. Its power stage is capable of supplying up to 10 A continuous current at up to 2 MHz switching frequency. These regulators produce an adjustable output voltage down to 0.8 V from 4.5 V to 60 V input rail to accommodate a variety of applications, including computing, consumer electronics, telecom, and industrial.

SiC46x's architecture delivers ultrafast transient response with minimum output capacitance and tight ripple regulation at very light load. The device is stable with any type of output capacitor. The device also incorporates a power saving scheme that significantly increases light load efficiency. This board has UVLO capability on the input rail and a user programmable soft start.

Specifications

Manufacturer Vishay Siliconix
Category AC/DC and DC/DC Conversion
Sub-Category DC/DC SMPS - Single Output
Eval Board Part Number SIC461EVB-ND
Eval Board Supplier Vishay Siliconix
Eval Board Normally In Stock
Topology Step Down
Outputs and Type 1 Non-Isolated
Voltage Out: Factory Set 5 V
Current Out 10 A
Voltage In 7 ~ 60 V
Efficiency @ Conditions >94%, 36V in, 5V @ 5 ~ 10 A
>94%, 24V in, 5V @ 2.6 ~ 10 A
>92%, 48V in, 5V @ 4 ~ 10 A
Voltage Out Range 0.8 ~ 0.92 × Vin
Features Current Limit (Adj. or Fixed)
Light Load Mode
Over Voltage Protection
Power Good Output
Short Circuit Protection
Shutdown, Enable, Standby
Soft Start
Thermal Protection
Under Voltage Protection, Brown-Out
Switching Frequency 300 kHz
Standby Current [Typical] 4 µA
Quiescent Current [Typical] 235 µA
Component Count + Extras 47 + 16
Internal Switch Yes
Design Author Vishay Siliconix
Application / Target Market Distributed Power Systems
Industrial Power
Servers
Telecom
White Goods
Standby Current [Maximum] 8 µA
Quiescent Current [Maximum] 325 µA
Main I.C. Base Part SiC461
Date Created By Author 2017-10
Date Added To Library 2020-01

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