Rohm BD63800MUF-EVK-001 User manual

Automotive Power and Motor Drive
BD63800MUF-C Evaluation Board
BD63800MUF-EVK-001

Notice
www.rohm.com HVA01E
© 2018 ROHM Co., Ltd. All rights reserved.
＜High Voltage Safety Precautions＞
◇ Read all safety precautions before use
Please note that this document covers only the BD63800MUF-C evaluation board
(BD63800MUF-EVK-001) and its functions. For additional information, please refer to the
datasheet.
To ensure safe operation, please carefully read all precautions before
handling the evaluation board
Depending on the configuration of the board and voltages used,
Potentially lethal voltages may be generated.
Therefore, please make sure to read and observe all safety precautions described in
the red box below.
Before Use
[1] Verify that the parts/components are not damaged or missing (i.e. due to the drops).
[2] Check that there are no conductive foreign objects on the board.
[3] Be careful when performing soldering on the module and/or evaluation board to ensure that solder
splash does not occur.
[4] Check that there is no condensation or water droplets on the circuit board.
During Use
[5] Be careful to not allow conductive objects to come into contact with the board.
[6] Brief accidental contact or even bringing your hand close to the board may result in
discharge and lead to severe injury or death.
Therefore, DO NOT touch the board with your bare hands or bring them too close to the board.
In addition, as mentioned above please exercise extreme caution when using conductive tools such as
tweezers and screwdrivers.
[7] If used under conditions beyond its rated voltage, it may cause defects such as short-circuit or,
depending on the circumstances, explosion or other permanent damages.
[8] Be sure to wear insulated gloves when handling is required during operation.
After Use
[9] The ROHM Evaluation Board contains the circuits which store the high voltage. Since it stores the
charges even after the connected power circuits are cut, please discharge the electricity after using it,
and please deal with it after confirming such electric discharge.
[10] Protect against electric shocks by wearing insulated gloves when handling.
This evaluation board is intended for use only in research and development facilities and
should by handled only by qualified personnel familiar with all safety and operating
procedures.
We recommend carrying out operation in a safe environment that includes the use of high
voltage signage at all entrances, safety interlocks, and protective glasses.

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User’s Guide
Automotive Power and Motor Drive
Evaluation Kit for Stepping Motor Driver
BD63800MUF-EVK-001
The ROHM BD63800MUF-C is an AEC-Q100 automotive qualified bipolar low-consumption stepping motor driver that is driven by
PWM current. It is suitable for Automotive applications such as Head-up Display, LED Headlight, Heat pump and Intake Air Control
Valve. This EVK enables the performance evaluation of this IC in research and development laboratories.
● Description
BD63800MUF-EVK-001 is an evaluation board for the
Automotive Stepping Motor Driver IC. Also, SPI master board,
USB cable and a GUI can be provided by ROHM for easy SPI
register configuration.
The key component of the evaluation board is the ROHM
BD63800MUF-C which have the following specifications and
features:
●BD63800MUF-C Key Specifications:
➢Supply voltage range…………………….…6.0 to 28 V
➢Output Current Rating (peak) …..………………1.35 A
➢Output Current Rating (DC) …..………….........1.20 A
➢Output On Resistance (up and down) .............0.75 Ω
➢VCC quiescent supply current (max) …………..10 µA
BD63800MUF-C operates with single power supply which can
simplify the set design.
●BD63800MUF-C Features:
➢CLK-IN and SPI-IN Drive mode
➢Supported Modes:
Full step, 1/2, 1/4, 1/8, 1/16 and 1/32 step
➢Current Decay Mode Switch Function
- Mix Decay: Linear Adjustment of
Slow Decay / Fast Decay Ratio
- Auto Decay: Automatic Switch of
Slow Decay / Fast Decay
Further features and protections are referred to the datasheet.
Figure 1: BD63800MUF-EVK-001
●EVK Features
➢Plug & Play Stepping Motor Evaluation Kit
➢Providing SPI master control board
BD63800MUF-EVK-001 is also enabled evaluation
with your SPI master.
➢Graphical User Interface application software
Easy to set/read register.
[Operating System: Windows10]
➢External Switches for pin setting.
Open or High settings
➢Test pins for easy signal monitoring

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User’s Guide
BD63800MUF-EVK-001
Contents
1Introduction ..............................................................................................................................................3
2Safety Instructions .....................................................................................................................................4
2.1 Warnings ...........................................................................................................................................4
2.2 Instructions for Safe Use ........................................................................................................................4
3Hardware Description..................................................................................................................................5
3.1 Schematic ..........................................................................................................................................5
3.2 PCB Layout and Component Placement .....................................................................................................6
3.3 Bill of Materials....................................................................................................................................9
4Operating Instructions ...............................................................................................................................10
4.1 Hardware.........................................................................................................................................10
4.2 Software..........................................................................................................................................12

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February.2021
User’s Guide
BD63800MUF-EVK-001
1 Introduction
This evaluation kit (EVK) manual describes the usage of ROHM’s BD63800MUF-EVK-001 and control application. The purpose of the
EVK is to allow the test and evaluation of the stepping motor driver IC BD63800MUF-C in professional research and development
environments. This document provides guidelines to quickly setup the hardware and software for fast and easy stepping motor driver
IC performance evaluation.
•BD63800MUF-C evaluation board [BD63800MUF-EVK-001]
•SPI Master control board
•USB cable (USB2.0 A-Male to B-Male)
•BD63800MUF-C GUI control software (MS Windows)
•USB Driver
For operation of the EVK the following additional items will be required:
•PC with operating system Windows 10 or higher
•Laboratory DC power supplies: 12 V(typ.)/1.5 A(min.) and 5 V/100 mA(min.)
•Load (e.g. Bipolar DC step motor)
•Connecting cables between DC power supply and boards
•Clock generator: Input 5 V to 0 V clock signal for CLK pin. [Optional]
Figure 2 shows the setup boards and instruments as mentioned above. Detailed information for connection is described on section
4.1[Hardware]. For receiving the BD63800MUF-C GUI control software please get in touch with your local ROHM sales office or use
the general ROHM customer support system.
Figure 2: BD63800MUF-EVK-001 Evaluation Setup.
USB Cable
(A-male to B-male)
SPI Master
control board

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No. 63UG134E Rev.001
February.2021
User’s Guide
BD63800MUF-EVK-001
2 Safety Instructions
2.1Warnings
▪This evaluation kit must only be operated by trained professionals.
▪This evaluation kit should be operated in a well ventilated environment and, if used inside a case, the case should not
be covered.
▪This evaluation kit should be placed on a stable, flat, non-conductive surface in use and should not be contacted by
conductive items.
▪All peripherals used with the evaluation kit should comply with relevant standards for the country of use and be marked
accordingly to ensure that safety and performance requirements are met.
▪Where peripherals are connected that do not include the cable or connector, the cable or connector used must offer
adequate insulation and operation in order that the requirements of the relevant performance and safety are met.
▪The connection of incompatible devices to the evaluation kit may affect compliance or result in damage to the unit and
invalidate the warranty.
2.2Instructions for Safe Use
▪Do not expose the evaluation kit to water, moisture or place on a conductive surface whilst in operation.
▪Take care whilst handling to avoid mechanical or electrical damage to the printed circuit board and components.
▪Avoid handling the printed circuit board while it is powered. Only handle by the edges to minimize the risk of electrostatic
discharge damage.
▪Do not short any outputs to each other, to the supply or to GND.
▪Do not operate the evaluation kit outside its specified ratings.
▪Take care to monitor the PCB and IC temperatures in particular when operating with high power loads and do not exceed
the absolute maximum ratings of all components.

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No. 63UG134E Rev.001
February.2021
User’s Guide
BD63800MUF-EVK-001
3 Hardware Description
3.1Schematic
Figure 3: Evaluation Board Schematic

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No. 63UG134E Rev.001
February.2021
User’s Guide
BD63800MUF-EVK-001
3.2PCB Layout and Component Placement
Please note that the layout of this EVK is not optimized in terms of thermal performance or signal routing.
The focus is more on enabling easy test by adding test points to each signal. All pictures are viewed as seen from TOP side.
Figure 4: TOP side PCB with Pads and Silkscreen
Figure 5: Bottom side with Pads and Silkscreen

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User’s Guide
BD63800MUF-EVK-001
Figure 6: Top layer
Figure 7: 2nd layer

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User’s Guide
BD63800MUF-EVK-001
Figure 8: 3rd layer
Figure 9: Bottom layer