リReference Design

A system-level evaluation board that combines ROHM's IC and discrete products. We have already solved not only the characteristics of individual products but also the problems that may occur when combining them to build a system, thus contributing significantly to the reduction of development time for our customers. For example, it has been confirmed that all the products equipped with the product meet CISPR25 Class-5 standards in operation with regard to EMC standards, which are important factors in incorporating the product into automotive equipment. In addition, system-level evaluation and design data can be downloaded so that customers can use it as a reference for their designs. ROHM will continue to offer a wide range of solution evaluation boards in the future.

REFRPT001
CISPR25 Class5 compliant 8 rails power tree Reference Design for Automotive ADAS/Infotainment application

Summary

This reference design is a power tree solution board developed for infotainment devices such as automotive clusters and center information displays and for ECUs for ADAS application. The power system that can support functional safety is integrated on a single board to achieve the optimal configuration as a power tree. Excellent EMC performance that meets CISPR25 Class 5 even at all power supply rails are enabled, and reduces heat generation of each device by distributing high-efficiency DCDCs. In addition, two supervisor ICs with self-diagnosis functions can monitor the output of all power rails and contribute to a higher level of functional safety.

Feature

  • Automotive Infotainment/ADAS 8-channels power tree reference design
  • Verified to satisfy EMC CISPR 25 class 5 standard without common mode filter
  • In order to avoid the AM radio frequency bands All DC/DC converters operate at a switching frequency of 2.2 MHz or higher.
  • Thermal characteristics tested
  • voltage monitoring for 8-channel power tree to improve the functional safety ASIL level
  • Space saving by integrating multiple power trees

Specification

Product NameREFRPT001-EVK-001
Input Voltage9.0V ~ 16.0V
Output Channel8-channels
Output Voltage5.0V x2/3.3V x2/1.8V/1.5V/1.25V/1.0V
EMC PerformanceVerified to satisfy CISPR 25 Class 5
Size121.9mm x 96.5mm

Application examples

ADAS sensors, cameras and radar
◇ Applications such as car infotainment, clusters, and body control modules (BCM) that require
miniaturization, high efficiency, and high reliability in automobiles.

PRT62-EVK001

Reference Board Image

Part No.SpecificationsPower Supply Configuration in the REFRPT001-EVK-001Design GuideDistribution Inventory
Vin [V]Vout [V]Iout [A]
BD9P105EFV-CFor Automotive 3.5V to 40V Input,
1A Single 2.2MHz Buck DC/DC Converter
9.0~16.05.01.0Design GuideContact Us
BD9S201NUX-CFor Automotive 2.7V to 5.5V Input,
2A Single Synchronous Buck DC/DC Converter
(Internal 5.0V)1.251.25
BD00IA5MEFJ-MFor Automotive 0.5A,
0.8~4.5V Variable Output LDO Regulator
(Internal 5.0V)3.30.2
BD9P205EFV-CFor Automotive 3.5V to 40V Input,
2A Single 2.2MHz Buck DC/DC Converter
9.0~16.03.32.0
BD9S400MUF-CFor Automotive 2.7V to 5.5V Input,
4A Integrated MOSFET Single Synchronous Buck DC/DC Converter
(Internal 3.3V)1.01.5
BD9S300MUF-CFor Automotive 2.7V to 5.5V Input,
3A Integrated MOSFET Single Synchronous Buck DC/DC Converter
(Internal 3.3V)1.51.0
BD9S201NUX-CFor Automotive 2.7V to 5.5V Input,
2A Single Synchronous Buck DC/DC Converter
(Internal 3.3V)1.80.5
RV4C020ZPHZG20V, 2A Pch MOSFET(Internal 3.3V)3.30.15
RBR3LAM60BTFFor Automotive
Low VF, 60V, 3A, SOD-128, Schottky Barrier Diode
9.0~16.0--
BD39040MUF-CFor Automotive
System Power Good + Watchdog Timer + Reset
(Internal 5.0V)--
BD39040MUF-CFor Automotive
System Power Good + Watchdog Timer + Reset
(Internal 3.3V)--

Evaluation data

Design Data

Design Models & Tools

Device NamePackage NameSPICE modelSolution SimulatorSymbol & Footprint3D Model
BD9P105EFV-CHTSSOP-B20availableavailableavailableavailable
BD9P205EFV-CHTSSOP-B20availableavailableavailableavailable
BD9S201NUX-CVSON008X2020availableavailableavailableavailable
BD9S300MUF-CVQFN16FV3030availableavailableavailableavailable
BD9S400MUF-CVQFN16FV3030availableavailableavailableavailable
BD00IA5MEFJ-MHTSOP-J8availableavailableavailableavailable
BD39040MUF-CVQFN16FV3030Contact usContact usavailableavailable
RV4C020ZPHZGDFN1616-6WContact usContact usContact usavailable
RBR3LAM60BTFPMDTMavailableContact usContact usContact us