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Increased power density for POL converters with smallest buck regulator modules

Increased power density for POL converters with smallest buck regulator modules

Posted Date: 2023-10-14

New Yorker Electronics has launched Vishay’s new 6A, 20A, and 25A microBRICK synchronous buck regulator modules designed to extend energy density and effectivity for POL converters. Offered in a ten.6mm x 6.5mm x 3mm package deal, the Vishay Siliconix SiC931, SiC951 and SiC967 are the smallest of those gadgets available on the market – with the bottom peak – and have broad enter voltage ranges from 4.5V to 60V.

As much as 69% smaller than different options, the regulator modules every provide two high-performance MOSFETs, an inductor, and a controller, with minimal exterior parts required for configuration and loop compensation. The gadgets’ compact measurement vastly will increase energy density, whereas their excessive stage of integration decreases design complexity and time to market. The regulators’ controllers devour minimal quiescent present, permitting peak efficiencies of as much as 97%. In information centres, the telecom infrastructure, and industrial functions, microBRICK regulators assist decrease power consumption by extra effectively supplying energy to FPGAs, ASICs, and SoC core energy provides.

Extremely configurable, the regulators mix their broad enter voltage ranges with adjustable output voltages right down to 0.3V. As well as, the SiC931 options 4 programmable switching frequencies at 600kHz, 1MHz, 1.5MHz and 2MHz, whereas the SiC967 and SiC951 present adjustable switching ranges from 100kHz to 2MHz and 300kHz to 1.5MHz, respectively. All three gadgets ship an adjustable present restrict, whereas the SiC931 options an adjustable mushy begin and the PMBus 1.3 compliant SiC951 helps sequential, monitoring and simultaneous operation.

The regulator modules provide versatile options for numerous functions, together with POL converters in servers, cloud computing, high-performance computing, and desktop computer systems; industrial automation, motor drives, and instruments; surveillance programs; client electronics; and 5G telecom gear. For these functions, the SiC951 and SiC967 current three working modes: pressured steady conduction, ultrasonic, and energy save. The SiC931 supplies pressured steady conduction and energy save modes. When the inductor present crosses zero in power-saving mode, the management scheme turns off the low-side MOSFET to deploy a diode emulation mode. The switching frequency reduces in proportion to load situations. No minimal switching frequency limitation permits for the very best effectivity at gentle hundreds.

The gadgets’ COT structure delivers ultrafast transient response with minimal output capacitance and tight ripple regulation at very gentle hundreds. It additionally permits loop stability no matter the kind of output capacitor used, together with low ESR ceramic capacitors. The regulators function a strong safety function set for dependable operation, output OVP and UVP, cycle by cycle OCP, SCP with auto retry, OTP, and an influence good flag.