R O H M ’s N e w B r e a k t h r o u g h Automotive Power Supply C i r c u i t Te c h n o l o g y

A new approach to solving problems inherent in stop-start systems ROHM took a novel approach for buck-boost DC/DC converters, in which it has been difficult to achieve stable control, by developing Quick Buck Booster® technology that delivers fast response, industry-low* current consumption, and stable performance. Utilizing this technology in our automotive buck-boost power supply chipset contributes to greater design efficiency and stable operation in ECUs used stop-start vehicle systems. *ROHM October 2018 study The challenges and necessity of buck-boost power supply in automotive stop-start...

To solve these problems, ROHM leveraged analog design technology and power system processes to develop Quick Buck Booster®, a breakthrough buck-boost technology that utilizes original high-speed pulse control technology dubbed Nano Pulse Control®. As a result, responsiveness was dramatically improved, making it possible to provide a common design for both buck and buck-boost conversion while significantly reducing the capacitance of the output capacitor. With Quick Buck Booster® Buck-boost converter response Slower than buck converters Large capacitance output capacitors required Difficult to...

Automotive Buck-Boost Power Supply Chipset Utilizing Quick Buck Booster® Technology Buck Converter Featuring Con Quick Buc Booster® Buck Technology Technolog Improved buck-boost converter response reduces output capacitance by half Fast Response ROHM’s buck-boost power supply chipset with Quick Buck Booster® technology suppresses output voltage fluctuations to ±100mV, shortening fluctuation time considerably. This ensures stable ECU operation during cranking. In addition, it is possible to halve the capacitance of the capacitor connected to the output side to improve response, contributing to...

Providing a common board design reduces power supply development load by 50% Utilizing a common board design reduces development load by 50% compared with conventional methods requiring separate designs for both buck-boost and buck power supplies, No need to start from scratch Enables flexible development since only one power supply needs to be considered and evaluated. Conventional Buck Power Supply Specification Review Model A : Buck Circuit Board Power Supply Power Supply Review Evaluation Buck-Boost Power Supply Specification Review Specification Review Prototype Evaluation Model B : Buck-Boost...

1) The information contained in this document is current as of October, 2018. 2) The information contained herein is subject to change without notice. Before you use our Products, please contact our sales representative (as listed below) and verify the latest specifications. 3) Although ROHM is continuously working to improve product reliability and quality, semiconductors can break down and malfunction due to various factors. Therefore, in order to prevent personal injury or fire arising from failure, please take safety measures such as complying with the derating characteristics, implementing...