Rohm BD16950EFV-EVK-001 Manuel utilisateur

Automotive Power and Motor Drive

BD16950EFV-C Evaluation Board

BD16950EFV-EVK-001

Notice

www.rohm.com HVA01E

＜High Voltage Safety Precautions＞

◇Read all safety precautions before use

Please note that this document covers only the BD16950EFV-C evaluation board

(BD16950EFV-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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No. 63UG103E Rev.001

2021.2

User’s Guide

Automotive Power and Motor Drive

Evaluation Kit for Automotive 2-Channel

Half-Bridge Gate Driver IC

BD16950EFV-EVK-001

The ROHM BD16950EFV-C is an AEC-Q100 automotive qualified 2-channel Half-Bridge Gate Driver IC, suitable for DC motor drive

in Automotive applications such as Power Window Lifter, Sunroof Module, Wiper, Seat belt tensioner, Seat positioning, 2H motors etc.

This EVK enables the performance evaluation of this IC in research and development laboratories.

●Description

This EVK consists of an evaluation board for the Automotive 2-

channel Half-Bridge Driver IC and USB cable.Also aGUI can be

provided by ROHM for easy SPI register configuration.

The key component of the evaluation board is the ROHM

BD16950EFV-C which is an AEC-Q100 automotive qualified 2-

channel Half-Bridge Gate Driver, controlled by an external MCU

through a 16-bit Serial Peripheral Interface (SPI). Independent

control oflow-side and high-side N-MOSFETS allows for several

MCU controlled modes. A programmable drive current is

available to adjust slew-rates, in order to meet EMI and power

dissipation requirements. Diagnostics can be read and reset by

an external MCU.

Besides this motor driver IC the evaluation board contains all

external components necessary for operation including a full

bridge created by discrete FETs, an LDO for logic supply, SPI

interface and various test points for signal monitoring.

●BD16950EFV-C Key Specifications

Wide Input voltage range…………………...5.5 to 40V

Gate Drive Voltage (Half Bridge) …..………..…….11V

VS quiescent supply current...............................0 µA

VCC quiescent supply current …………….……..2 µA

Integrated Charge Pump Frequency ……..…500 kHz

Programmable Parameters..…...…..SPI (7 MHz max)

●EVK Features

Plug & Play DC Motor Evaluation Kit

No need for driver installation due to GUI design as

Human Interface Device

Single Power Supply with Reverse Polarity Protection

On Board Logic Supply by LDO or USB

Discrete H-Bridge FETs with high current capability

Test pins for easy signal monitoring

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No. 63UG103E Rev.001

2021.2

User’s Guide

BD16950EFV-EVK-001

Contents

1. Introduction.............................................................................................................................................. 3

2. Safety Instructions ..................................................................................................................................... 3

2.1 Warnings .............................................................................................................................................. 3

2.2 Instructions for Safe Use........................................................................................................................... 4

3. Hardware Description ................................................................................................................................. 5

3.1 Schematic............................................................................................................................................. 5

3.2 PCB Layout and Component Placement....................................................................................................... 6

3.3 Bill of Materials....................................................................................................................................... 7

4. Operating Instructions................................................................................................................................. 8

4.1 Hardware.............................................................................................................................................. 8

4.2 Software............................................................................................................................................... 9

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No. 63UG103E Rev.001

2021.2

User’s Guide

BD16950EFV-EVK-001

1. Introduction

This evaluation kit (EVK) manual describes the usage of ROHM’s BD16950EFV-EVK-001. The purpose of the EVK is to allow the test

and evaluation of the motor driver IC BD16950EFV-C in professional research and development environments. This document

provides guidelines to quickly setup the hardware and software for fast and easy motor driver IC performance evaluation.

•BD16950EFV-C evaluation board

•USB cable

For operation of the EVK the following additional items will be required:

•BD16950EFV-C GUI control software (MS Windows)

•PC with operating system Windows 7 or higher

•Laboratory DC power supply

•Load (e.g. Brush DC motor)

•Connecting cables

For receiving the BD16950EFV-C GUI control software please get in touch with your local ROHM sales office or use the general

ROHM customer support system.

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.

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No. 63UG103E Rev.001

2021.2

User’s Guide

BD16950EFV-EVK-001

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 ICtemperatures in particular when operating with high power loads and do not exceed

the absolute maximum ratings of all components.

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No. 63UG103E Rev.001

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User’s Guide

BD16950EFV-EVK-001

3. Hardware Description

3.1Schematic

Figure 1: Evaluation Board Schematic

BD16950EFV-C

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User’s Guide

BD16950EFV-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.

Figure 2: TOP side PCB layout pattern Figure 3: TOP side component placement

Figure 4: BOTTOM side PCB layout pattern Figure 5: BOTTOM side component placement

(as seen from TOP side) (as seen from TOP side)

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User’s Guide

BD16950EFV-EVK-001

3.3Bill of Materials

Comp. Name Description Type Quantity

C1, C4, C5, C6, C7,

C9, C10, C13, C14,

C15

100 nF, 50 V 0805 X7R Capacitor, Surface Mount 10

C2 330 µF, 50 V 5x10 Aluminum Electrolytic Capacitor 1

C3 1 µF, 50V 1206 X7R Capacitor, Surface Mount 1

C8 220 µF, 50 V 10x16 Aluminum Electrolytic Capacitor 1

C11, C12 1 µF Capacitor, Surface Mount 2

C16 10 µF Capacitor, Surface Mount 1

C17 100 µF Capacitor, Surface Mount 1

CN2, CN3 Blue Connector Connector 2

CN4 TAG_Connect Connector 1

CN5 MINI_USB Connector 1

D1 EDZ16B/ROHM, SOD-523 16V,150 mW Diode, Surface Mount 1

BAS16VV/NXP, SOT-666

100 V, 200 mA

Diode, Surface Mount 1

J1, J9, J10, J11, J12,

J13

Solder Connection, closed Jumper, Surface Mount 6

J2, J14 Solder Connection, closed Jumper, Surface Mount 2

J3, J4, J5, J7, J8, J15,

J16

1x2 Pin Header, Through Hole 1x2 Pin Header, Through Hole 7

J6 1x3 Pin Header, Through Hole 1x3 Pin Header, Through Hole 1

Q1, Q2, Q3, Q4, Q6 RQ3G270BF Nch MOSFET 5

Q5 BC846 NXP, SOT23 Transistor, Surface Mount 1

R1 10 kΩ, 0805 Chip Resistor, Surface Mount 1

R2, R3, R4, R5, R6 0 Ω, 1210 Chip Resistor, Surface Mount 5

R7 33 kΩ, 0805 Chip Resistor, Surface Mount 1

R8, R9 22 kΩ, 0805 Chip Resistor, Surface Mount 2

All Testpins Probe Ring Test Pin, Through Hole 30

U1 BD16950EFV-C ROHM Motor Driver 1

U2 BD450M2FP3-C ROHM LDO Regulator IC 1

Table 1: Evaluation Board Bill of Materials

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No. 63UG103E Rev.001

2021.2

User’s Guide

BD16950EFV-EVK-001

4. Operating Instructions

4.1Hardware

Please connect a DC laboratory source to the connector CN2 of the evaluation board. The pins are labelled with “BATT+” and “BATT-

“. Although reverse battery protection is included on the evaluation board please take care about the proper polarity in order not to

stress the components. Since in final application the IC is operated by a car battery the typical supply voltage of this EVK is 13.5V.

Although the maximum operating supply voltage of the motor driver IC BD16950EFV-C is 40V it is also the absolute maximum value

of the IC and external MOSFETs. So if you use higher supply voltage than typical please make sure to include enough margin for

fluctuation or voltage spikes to never exceed the absolute maximum ratings.

Please operate the EVK at room temperature only.

The maximum load current is limited by thermal performance of the components. For example with the typical SPI register settings

(see chapter 4.2, Table 3) and a load current of 4.5A the transistor Q4 surface temperature was 50°C.

Please take care to measure the temperature of the EV board components when applying your desired settings and load.

The EVK has some Jumpers forsignal configuration.By default the Jumpers should be in the position as described below and typically

do not need to be changed.

Name

Typical Position

Description

J1, J2,

J9-14

closed (hard wired)

These power and signal lines are hard connected by solder and should only be

opened for test purposes.

J3, J4, J5

closed

Must be closed to connect PWM1, PWM2 and RSTB to the SPI controller

closed middle pin to

bottom pin

Selects USB 5V instead of LDO 5V supply as logic supply

closed

Connects logic supply to BD16950EFV-C

open

Can hardwire the RSTB pin to VCC. Typically not required

J15

closed

Feedback of low side transistors source to BD16950EFV-C

J16

closed

Don’t care. Different GND signals are hard-connected anyway.

Table 2: Typical Jumper configuration

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