Automotive Buck-Enhance DC-DC Converter Reference Design For USB PD

The Automotive Buck-Enhance DC-DC Converter reference design affords MOSFET choices for optimum efficiency, making certain steady output voltage and environment friendly energy supply in automotive functions.

USB Energy Supply (PD) charging has gained reputation for units like smartphones, tablets, and laptops. To satisfy the rising demand for energy provide in automobiles, USB Kind-C® connectors have been adopted, making USB PD charging well-liked even in vehicles. In USB PD, the receiving system determines the output voltage, requiring a buck-boost converter to regulate the voltage from the automobile battery. This H-bridge sort buck-boost DC-DC converter converter makes use of 4 switching parts. We’ve developed an environment friendly and space-saving automotive buck-boost DC-DC converter by using our compact automotive MOSFETs as switches.

Toshiba’s Automotive Buck-Enhance DC-DC Converter reference design affords two kinds of automotive MOSFETs for the H-bridge buck-boost DC-DC converter. Choice 1 makes use of the XPN7R104NC, whereas Choice 2 makes use of the SSM6K804R. Moreover, our automotive MOSFET XPN3R804NC is a switching system within the reverse-connection safety circuit and defend short-circuit safety circuit.

The non-inverting buck-boost DC-DC converter circuit combines buck options and boosts DC-DC converters to attain increased effectivity. Utilizing synchronous rectification with MOSFETs as a substitute of diodes additional improves effectivity. This circuit, also known as an H-bridge buck-boost DC-DC converter, contains 4 MOSFETs positioned across the inductor. It’s splendid for functions requiring seamless switching between step-up and step-down operations. This converter ensures a continuing output voltage even when the enter voltage fluctuates, making it appropriate to be used with batteries. Moreover, it could actually modify the output voltage primarily based on the load necessities, comparable to in USB Energy Supply units.

Within the automotive trade, designing environment friendly and dependable USB energy chargers, DC-DC converters, and in-vehicle infotainment (IVI) programs requires cautious consideration of things comparable to energy provide noise discount, energy consumption discount, and circuit miniaturization. Toshiba affords a spread of semiconductor merchandise tailor-made for these functions, together with circuits for cigar sockets or accent circuits in USB energy chargers, step-up or step-down DC-DC converter models, and parts for show, audio output, video and voice enter, and wi-fi communications sections in IVI programs. Moreover, Toshiba supplies circuit configuration examples to assist designers in implementing these options successfully.

The design options embody excessive effectivity, with Choice 1 reaching a most effectivity of 96.4% and Choice 2 attaining a most effectivity of 95.5% underneath the identical circumstances. The define dimension is compact at 90 mm x 40 mm. Moreover, there are numerous MOSFET choices obtainable for this product.

The system encompasses a huge enter voltage vary of DC 5 to 18 V, with a typical voltage of 12.6 V. It supplies an output voltage vary of DC 3.3 to 21 V, supporting an output energy of as much as 60 W. The circuit topology employed is an H-Bridge Buck-Enhance Circuit.

Toshiba has examined this reference design. It comes with a Invoice of Materials (BOM), schematics, a Printed circuit board (PCB) format, 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.