Rohm BD16950EFV-EVK-001 User manual

Automotive Power and Motor Drive
BD16950EFV-C Evaluation Board
BD16950EFV-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 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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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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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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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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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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3. Hardware Description
3.1Schematic
Figure 1: Evaluation Board Schematic
BD16950EFV-C

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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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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
D2
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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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
J6
closed middle pin to
bottom pin
Selects USB 5V instead of LDO 5V supply as logic supply
J7
closed
Connects logic supply to BD16950EFV-C
J8
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