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.

CISPR25-tested 8-channel power tree reference design for automotive ADAS and Info-Display

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 Name REFRPT001-EVK-001
Input Voltage 9.0V ~ 16.0V
Output Channel 8-channels
Output Voltage 5.0V x2/3.3V x2/1.8V/1.5V/1.25V/1.0V
EMC Performance Verified to satisfy CISPR 25 Class 5
Size 121.9mm x 96.5mm
PRT62-EVK001

Reference Board Image

Part No. Specifications Power Supply Configuration in the REFRPT001-EVK-001 Design Guide Distribution Inventory
Vin [V] Vout [V] Iout [A]
BD9P105EFV-C For Automotive 3.5V to 40V Input,
1A Single 2.2MHz Buck DC/DC Converter
9.0~16.0 5.0 1.0 Design Guide Contact Us
BD9S201NUX-C For Automotive 2.7V to 5.5V Input,
2A Single Synchronous Buck DC/DC Converter
(Internal 5.0V) 1.25 1.25
BD00IA5MEFJ-M For Automotive 0.5A,
0.8~4.5V Variable Output LDO Regulator
(Internal 5.0V) 3.3 0.2
BD9P205EFV-C For Automotive 3.5V to 40V Input,
2A Single 2.2MHz Buck DC/DC Converter
9.0~16.0 3.3 2.0
BD9S400MUF-C For Automotive 2.7V to 5.5V Input,
4A Integrated MOSFET Single Synchronous Buck DC/DC Converter
(Internal 3.3V) 1.0 1.5
BD9S300MUF-C For Automotive 2.7V to 5.5V Input,
3A Integrated MOSFET Single Synchronous Buck DC/DC Converter
(Internal 3.3V) 1.5 1.0
BD9S201NUX-C For Automotive 2.7V to 5.5V Input,
2A Single Synchronous Buck DC/DC Converter
(Internal 3.3V) 1.8 0.5
RV4C020ZPHZG 20V, 2A Pch MOSFET (Internal 3.3V) 3.3 0.15
RBR3LAM60BTF For Automotive
Low VF, 60V, 3A, SOD-128, Schottky Barrier Diode
9.0~16.0 - -
BD39040MUF-C For Automotive
System Power Good + Watchdog Timer + Reset
(Internal 5.0V) - -
BD39040MUF-C For Automotive
System Power Good + Watchdog Timer + Reset
(Internal 3.3V) - -

Evaluation data

Design Data

Design Models & Tools

Device Name Package Name SPICE model Solution Simulator Symbol & Footprint 3D Model
BD9P105EFV-C HTSSOP-B20 available available available available
BD9P205EFV-C HTSSOP-B20 available available available available
BD9S201NUX-C VSON008X2020 available available available available
BD9S300MUF-C VQFN16FV3030 available available available available
BD9S400MUF-C VQFN16FV3030 available available available available
BD00IA5MEFJ-M HTSOP-J8 available available available available
BD39040MUF-C VQFN16FV3030 Contact us Contact us available available
RV4C020ZPHZG DFN1616-6W Contact us Contact us Contact us available
RBR3LAM60BTF PMDTM available Contact us Contact us Contact us