Refmot003-002

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.

Automotive Three-Phase Brushless Motor Pre-Driver with Sensor Reference Design

Summary

This reference design is a solution board for a three-phase brass-less sensor-equipped motor pre-driver developed to control automotive air conditioner blower motors and battery cooling fan motors.
In addition to the pre-driver, the NchMOS of the output stage and peripheral components for external input setting are integrated on a single board, and the motor can be controlled simply by connecting the power supply (12V typ.)
By using noise suppression and S/R adjustment, this product has passed the CISPR 25 Class 5 EMC standard.
This product can be used as a reference design for circuit and pattern design when creating PCBs.

This reference design consists of two different boards, with a choice of different sized Nch MOSFETs packages.

Reference Board NameOutline
REFMOT003-EVK-001Nch MOSFET 5.0 x 6.0mm version
REFMOT003-EVK-002Nch MOSFET 3.0 x 3.0mm version

Features

  • Cleared EMC standard CISPR 25 Class 5 (in-house evaluation)
  • 180°current flow (sinusoidal drive)
  • Built-in automatic advance function
  • Variable speed control function (supports both PWM and DC input)
  • Dead time switching
  • Various built-in protection functions (OVP, UVLO, OCL, OCP, LOCK, TSD, TXTSD, HALLERR)

Applications

Air Conditioning Blower Motor
Battery Cooling Fan Motor

Key Specification (Reference design)

Product nameREFMOT003-EVK-001
REFMOT003-EVK-002
Input Voltage6.5V ~ 18.0V
Output current(Depends on the performance of the external FET)
Driving method180° energized sine wave drive (two-phase modulation)
EMC performanceCISPR 25 Class 5
Size133mm x 145mm

REFMOT003-EVK-001

Product in refDesign and related contents

Product nameSpiceUn-encrypted Spiceweb simSymbol&Footprint3D ModelThermal ModelCalc toolEval board for
individual product
BD63030EKV-C------
Nch MOSFET
(5.0 x 6.0mm, Under development)
--------
PSR400ITQFH1L00-------
Reference Board Image

Reference Board Image

Design files

REFMOT003-EVK-002

Product in refDesign and related contents

Product nameSpiceUn-encrypted Spiceweb simSymbol&Footprint3D ModelThermal ModelCalc toolEval board for
individual product
BD63030EKV-C------
Nch MOSFET
(3.0 x 3.0mm, Under development)
--------
PSR400ITQFH1L00-------
Reference Board Image

Reference Board Image

Design files

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