Power_electronics Features

A New Approach to Circuit Breaker Design Using Silicon Carbide Switches - Nov 21
Mechanical circuit breakers can be low cost with minimal losses, but they operate slowly and wear out. Solid state versions overcome the problems and are becoming increasing viable as replacements at...
More details...
Power Electronics Europe News
DC/DC voltage regulator targets data centres and automotive designs

The EPC9143 is in a 16th brick size. It integrates Microchip’s dsPIC33CK digital signal controller (DSC) with the EPC2053 eGaN FETs from EPC. The result is 96% efficiency in a 48V input to 12V output conversion at 25A. 

The combination of digital signal controllers (DSCs) and eGaN FETs is claimed to enable best-in-class power density of 730W/in3 for high efficiency, low cost DC/DC conversion. Switching frequency is 500kHz.

It measures 33 x 22.9mm (1.3 x 0.9 inches) and is designed for data centres, telecomms and automotive applications.                         

The regulator is flexible - additional phases can be added to this scalable two-phase design to increase power. In addition, the digital controllers allow the input voltage to be adjusted from 8.0 to 72V and the output voltage to be adjusted from 3.3 to 25V.

Data centres, telecomms and automotive equipment can used the brick DC/DC converters to meet higher power density. The company says that the eGaN FETs and ICs provide the fast switching, small size and low cost that can meet the stringent power density requirements of these applications to minimise component count and cost, without incurring size penalties.

The company cites a typical example of commodity PCIe cards and storage where high density 48V to 12V point of load (PoL) converters require a regulated 12V output voltage.

The EPC9143 demonstration board is available now for immediate delivery from Digi-Key.

View PDF
Go Back   
Newsletter sign up