This reference design not solely fulfills a wide range of useful necessities but additionally underscores the adaptability and effectivity of utilizing superior MOSFET expertise at the side of a devoted controller for automotive energy methods.
The reference design TND6290/D by onesemi offers an in depth, useful instance of how the NCV881930 controller may be successfully utilized in creating a high-performance automotive pre-regulator. The design will not be solely a testomony to the capabilities of the controller but additionally serves as a dependable blueprint for designers seeking to implement an analogous resolution of their automotive methods. T
This reference design of a 100 W non-isolated synchronous buck automotive pre-regulator is constructed utilizing the NCV881930 synchronous buck controller, complemented by 4 NVMFS5C460NL 40 V N-channel MOSFETs, to ship sturdy and environment friendly energy administration appropriate for a variety of automotive functions. These options embody built-in compensation which simplifies circuit complexity, a low quiescent present that enhances battery life, and a steady synchronous mode for higher effectivity below various load circumstances. The controller helps a large enter vary from 6.0 V to 16.0 V, successfully managing peaks as much as 40 V, which is important for dealing with automotive voltage fluctuations.
The design operates at a 410 kHz switching frequency, optimizing it for max effectivity with out sacrificing efficiency. The selection of the NVMFS5C460NL MOSFETs enhances the controller by supporting the high-frequency operation and making certain dependable dealing with of excessive present masses. This mix not solely maximizes effectivity but additionally minimizes the PCB dimension, as evidenced by the small kind issue four-layer PCB used on this design.It’s designed to function with an enter voltage vary of 6 V to 16 V DC, able to dealing with peak voltages as much as 40 V. It incorporates a synchronous buck output energy topology with a capability of as much as 100 W. The output voltage is regulated at 5.0 V, offering a nominal present of 15.0 A and may deal with peak currents as much as 20.0 A. This design makes it a flexible and sturdy resolution for automotive energy regulation wants.
Overcurrent safety safeguards the gadget towards extreme currents that might injury the circuitry. An exterior synchronization function permits the regulator’s operation to be synchronized with different parts within the system, lowering electromagnetic interference. The adaptive non-overlap drivers assist decrease change cross-conduction losses, whereas the built-in spread-spectrum functionality reduces EMI emissions. Moreover, the under-voltage lockout function ensures the regulator operates inside protected voltage ranges, defending each the circuit and the linked load.
This design is meant as a plug-and-play resolution for energy provide designers, permitting for straightforward adoption with minimal modifications required to swimsuit particular system wants. The versatile nature of the design makes it appropriate for a broad spectrum of automotive functions, from primary energy provide roles to extra complicated digital system integrations.
Onesemi has examined this reference design. It comes with a Invoice of Materials (BOM), schematics, a Printed circuit board (PCB) structure, and different knowledge. You could find extra knowledge concerning the reference design on the corporate’s web site. To learn extra about this reference design, click on right here.
