The design combines excessive effectivity, exact management, and compactness, making it a superb selection for high-power purposes in demanding environments and the versatile management choices and secure efficiency add to its attraction for enterprise-level energy administration options.
The Excessive Voltage 800-W SEPIC (Single-Ended Main-Inductor Converter) Converter Reference Design provides an environment friendly answer for powering server battery backup methods. This design is especially necessary in crucial purposes the place uninterrupted energy is crucial, equivalent to in knowledge facilities, telecommunications, and industrial servers. By offering a dependable and high-efficiency energy conversion methodology, this SEPIC converter permits seamless battery charging and administration, which is crucial for guaranteeing that servers and different crucial infrastructure keep operation throughout energy outages or fluctuations. The SEPIC topology used on this reference design is well-suited for purposes that require a large enter voltage vary, guaranteeing adaptability to various energy sources. Moreover, this design incorporates options that shield in opposition to over-voltage and over-current situations, thus enhancing system stability and longevity, making it a invaluable reference for engineers engaged on high-reliability energy options.
This PMP22339 reference design by Texas Devices operates in discontinuous conduction mode (DCM) and includes a non-isolated topology, providing versatile output voltage and present changes. Customers can set the output voltage between 282 V and 400 V by adjusting an exterior DC voltage throughout the 0 V to three V vary. Equally, the output charging present is adjustable from 0 A to 2 A by obligation cycle changes on a PWM enter. This design helps an enter voltage vary of 340 Vdc to 420 Vdc, offering flexibility to adapt to varied energy enter necessities. To keep up exact regulation, unbiased suggestions loops for each voltage and present are used, guaranteeing secure and correct efficiency.
This SEPIC converter demonstrates a excessive effectivity of 97% at full energy (380 V enter, 400 V output at 2 A), making it well-suited for energy-efficient purposes. The design achieves an accuracy of 1% for voltage regulation and a pair of% for present regulation, which is essential for purposes requiring exact energy supply. For ease of integration, the design can interface seamlessly with digital-to-analog converters (DACs) or microprocessors, and it additionally provides the choice for guide management, enhancing its adaptability throughout totally different methods. Using silicon carbide (SiC) FETs and rectifiers within the design helps reduce each switching losses and ringing, contributing to the converter’s excessive effectivity and dependable operation. This effectivity, mixed with a compact PCB footprint of 116 mm x 95 mm, makes it splendid to be used in space-constrained environments.
The design is recognized by the half quantity PMP22339.1 and has the next specs: a minimal enter voltage of 340 V, most enter voltage of 420 V, nominal output voltage of 400 V, most output present of two A, and most output energy of 800 W. The non-isolated topology facilitates a less complicated design with environment friendly power switch, which is advantageous in purposes that don’t require isolation however profit from space-saving designs and easy configurations. Because of this, this SEPIC converter is well-suited to be used in enterprise methods and rack server motherboards, the place compact, dependable, and environment friendly energy options are important.Â
TI has examined this reference design. It comes with a invoice of supplies (BOM), schematics, meeting drawing, printed circuit board (PCB) structure, and extra. The corporate’s web site has further knowledge in regards to the reference design. To learn extra about this reference design, click on right here.
