Automotive SEPIC Reference Design

The SEPIC reference resolution streamlines automotive rear lighting design, making certain secure voltage regulation and strong efficiency throughout enter voltages.

The Single-Ended Main Inductor Converter (SEPIC) stands out as a vital energy conversion topology within the quickly evolving automotive electronics panorama. Its distinctive capacity to effectively handle a variety of enter voltages whereas sustaining a secure output voltage addresses trendy automobiles’ various and demanding energy necessities. SEPIC converters are important for making certain the dependable operation of delicate automotive electronics, enhancing vitality effectivity, and offering strong safety options. Their versatility and effectivity make them indispensable in purposes resembling LED lighting, battery administration, and infotainment methods, underpinning the efficiency and security of latest automotive know-how. TND6344/D, a reference design of automotive SEPIC by Onsemi, simplifies the design course of.

This design is particularly tailor-made for automotive rear lighting purposes utilizing the SEPIC topology. It ensures environment friendly energy administration and secure voltage regulation, which is crucial for the dependable operation of rear lighting methods. The SEPIC controller handles the huge enter voltage vary typical in automotive environments, offering constant efficiency and enhancing the security and visibility of the car’s rear lighting. It showcases the controller’s capabilities and supplies a complete design for an automotive pre-regulator appropriate for a variety of purposes.

Energy provide designers can combine this circuit immediately into typical system designs with minimal element changes based mostly on particular system necessities. The design serves as a whole resolution whereas additionally offering entry to crucial options of the NCV887103. These options embrace peak present mode management with inside slope compensation, 1.2 V ±2% reference voltage, mounted frequency operation, a large enter voltage vary, enter Undervoltage lockout, inside delicate begin, low IQ in sleep mode, cycle-by-cycle present restrict safety, hiccup-mode overcurrent safety, hiccup-mode short-circuit safety, and thermal shutdown.

The design’s key options embrace a complete automotive reference design using a non-synchronous SEPIC controller with an enter voltage vary of 6.0 V to 16.0 V, able to dealing with peaks as much as 40 V. It operates at a switching frequency of 340 kHz for optimum effectivity. The design incorporates the ON Semiconductor NCV887103 adjustable output automotive non-synchronous SEPIC controller and the NVTFS5C478NL 40 V single N-channel FET. Moreover, it incorporates a small kind issue PCB with two layers, making it compact and appropriate for varied automotive purposes.

Onsemi has examined this reference design. It comes with a invoice of supplies (BOM), schematics, meeting drawing, printed circuit board (PCB) format, and extra. The corporate’s web site has further information in regards to the reference design. To learn extra about this reference design, click on right here.