Friday, April 4, 2025

1 kW DC/DC Converter Reference Design


With its superior design, this high-power, bidirectional DC/DC converter is a key part in optimizing automobile effectivity and efficiency. 

The twin board web methods in fashionable cars, incorporating each 12 V and 48 V buses, have led to the growing significance of high-power, bidirectional 48 V to 12 V DC/DC converters. These converters are elementary elements within the structure of up to date automobiles, enjoying a vital function in optimizing total automobile effectivity. They facilitate power switch between the 12 V and 48 V batteries based mostly on the automobile’s electrical calls for and the batteries’ state of well being.

A outstanding design on this class is a 1 kW, 48 V to 12 V buck-boost converter named as 1KW-DCDC-48V12V by Vishay Intertechnology, Inc , which consists of two modular energy levels, every able to dealing with 500 W. The symmetrical interleaving of each phases minimizes present ripple, enhancing the system’s effectivity. Moreover, every part is supplied with safety MOSFETs that present isolation in case of failure and restrict inrush present, guaranteeing the protection and reliability of the system. The converter’s means to robotically change between buck and increase operation, coupled with a switching frequency of 185 kHz, ends in a compact and environment friendly design.

The converter is designed for bidirectional operation, guaranteeing environment friendly energy conversion in each instructions. It operates on a 2-phase interleaved foundation, which ensures smoother energy supply and reduces ripple. The gadget intelligently selects between buck and increase modes, relying on the required voltage conversion, to take care of optimum efficiency. Voltage and present regulation is employed to take care of secure output and defend linked units. Inrush present management, overvoltage safety, and overcurrent safety are integral options that safeguard the system in opposition to numerous electrical anomalies.

Key elements of the converter embody the IHDM-1107BB-x0 inductor, identified for its effectivity in energy conversion purposes, and high-quality MOSFETs such because the SQJQ112E, SQJA90EP, and SQJQ140E, chosen for his or her superior switching efficiency. The WSLP2726 shunt is used for exact present measurement, enhancing management capabilities. Different vital elements embody the IHLP-6767GZ-5A inductor, the 182 CPHZ capacitor, and the T51 vPolyTan™ capacitor, every contributing to the gadget’s high-performance traits.

– Commercial –

The converter finds purposes throughout numerous sectors, together with the automotive business, the place it’s utilized in electrical automobile energy administration and superior driver-assistance methods. Additionally it is employed in industrial and server computing for energy provides, management methods, and power administration options. Within the realm of networking, telecom, and base station energy provides, the converter helps communication infrastructure by offering secure and dependable energy. It’s utilized in electrical automobile (EV) check environments, aiding within the growth and testing of EV applied sciences. 

Vishay Intertechnology, Inc  has examined this reference design. It comes with a pin diagram,purposeful rankings and many others. Yow will discover further information in regards to the reference design on the corporate’s web site. To learn extra about this reference design, click on right here.

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