Rohm BD63800MUF-EVK-002 Manual de usuario

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No. 63UG134E Rev.002

January.2022

User’s Guide

Automotive Power and Motor Drive

Evaluation Kit for Stepping Motor Driver

BD63800MUF-EVK-002

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-002 is an evaluation board for the

Automotive Stepping Motor Driver IC. Also, 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-002

● EVK Features

➢ Plug & Play Stepping Motor Evaluation Kit

➢ 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

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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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User’s Guide

BD63800MUF-EVK-002

1 Introduction

This evaluation kit (EVK) manual describes the usage of ROHM’s BD63800MUF-EVK-002. 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-002]

• USB cable (USB2.0 A-Male to C-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-002 Evaluation Setup.

USB Cable

(A-male to C-male)

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User’s Guide

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2 Safety Instructions

2.1 Warnings

▪ 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.

2.2 Instructions 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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3 Hardware Description

3.1 Schematic

Figure 3: Evaluation Board Schematic

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3.2 PCB 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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Figure 6: Top layer

Figure 7: 2nd layer

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Figure 8: 3rd layer

Figure 9: Bottom layer

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3.3 Bill of Materials

Comp. Name

Value

Type

Quantity

For BD63800MUF-C

1 nF

Capacitor, Surface Mount/Through Hole

100 µF

Capacitor, Through Hole

100 nF

Capacitor, Surface Mount/Through Hole

0.1 µF

Capacitor, Surface Mount/Through Hole

CN1

1 row x 4 pin Connector

2.54mm pitch, 1.0mm Hole

39 kΩ

Resistor, Surface Mount

6.2 kΩ

Resistor, Surface Mount

R4, R5

10 kΩ

Resistor, Surface Mount/Through Hole

R2, R3

Open

Resistor, Surface Mount

S1, S2, S3, S4, S5,

S6, S7, S8, S9

SPDT switch

2.54mm pitch, 1.0mm Hole

BD63800MUF-C

IC for Stepper Motor Driver

VQFN32FBV050

For Microcontroller

C4, C5, C7, C8, C9, C10,

C11, C12, C13, C17, C18,

C20

0.1 µF

Capacitor, Surface Mount

10 µF

Capacitor, Surface Mount

C14, C15

22 pF

Capacitor, Surface Mount

C16, C22

1 µF

Capacitor, Surface Mount

C19, C21

2.2 µF

Capacitor, Surface Mount

C23

10 µF

Capacitor, Surface Mount

CN2

2 row x 10 pin Connector

2.54mm pitch, 1.0mm Hole

D1, D2, D3

7.5V

Zener diode, Surface Mount

L1, L2

31 Ω

Ferrite bead, Surface Mount

R10, R13, R14

10 kΩ

Resistor, Surface Mount

R6, R8, R9, R11, R12

100 kΩ

Resistor, Surface Mount

R15, R16, R17, R18, R19,

R20, R21, R22

22 Ω

Resistor, Surface Mount

CY7C68013A-56PVXC

IC MCU USB PERIPH HI SPD 56SSOP

24LC64F-I/SN

IC EEPROM 64KBIT I2C 8SOIC

74LVC4T3144PW-Q10J

IC BUF NON-INVERT 5.5V

14TSSOPLINEAR 3.3V 500MA 8SOIC

TPS77533D

IC REG LINEAR 3.3V 500MA 8SOIC

ECS-240-20-23A-EN-TR

CRYSTAL 24.0000MHZ 20PF SMD

Table 1: Evaluation Board Bill of Materials

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User’s Guide

BD63800MUF-EVK-002

4 Operating Instructions

4.1 Hardware

Before start to connect, make sure to turn off all equipment for your safety.

Connect the cables as followings:

[BD63800MUF-EVK-002]

1. Connect USB Cable(C-Male) to CN2.

2. Connect DC Power Supply [6 to 28 V / 1.5 A (min.)] to VCC(Red) and GND(Black) terminal.

3. Connect Load to Outputs (OUT1A, OUT1B, OUT2A, OUT2B).

To make sure the correct connection, please check the install manual of the load.

4. Connect Clock Signal Generator to CLK terminal. [Option: In case of use the CLK terminal]

DC Power Supply

6 to 28V

Clock Signal Generator

0V(Low) –5V(High)

BD63800MUF-EVK-002

CN2 USB Cable

A-Male to C-Male

Load

Bipolar DC Step Motor

CLK

OUT1A

OUT1B

OUT2B

OUT2A S9

Vcc GND

Output

Vcc GND

Figure 10: BD63800MUF-EVK-002 Setup

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