Mikroe Clicker 4 User manual

CLICKER 4

INVERTER Shield

U S E R M A N U A L

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Table of contents

Introduction 4

1. Power Supply 5

2. MOSFET Power Stage 6

3. Integrated Driver 7

4. Encoder 8

5. CAN 9

6. Headers 10

Clicker 4 Inverter Shield is an extension for Clicker 4

series boards from MIKROE.

It is the perfect way to expand the functionalities of

your Clicker 4 board to provide highly eﬃcient control

and drive solutions for brushless DC (BLDC) motors.

The board features a 3-phase inverter using Toshiba’s

low RDS(ON) power MOSFETs, used in combination

with an integrated gate driver easily conﬁgurable

through the SPI interface. It also carries an

incremental encoder receiver, and a CAN transceiver,

rounding out the functionality of the board ideal for

various motor control applications.

P A G E 5

CLICKER 4 Inverter Shield U S E R M A N U A L

1. Power Supply

Clicker 4 Inverter Shield is compatible with a wide range input

voltage from 12V to 48V DC. To power the board, connect the

power source to terminal block TB1 (1) making sure to follow

the polarity marked on board. A high-eﬃciency, synchronous

step-down DC-DC Converter MAX17504 (2) from Maxim

Integrated is on-board. This is an advanced integrated buck

converter, which provides a 5V/2A regulated power source.

The 5V output is also connected to pin 36 (EXT) of HDR2 side

header, and can be used to power the controller board.

POWER SUPPLY

1 2

P A G E 6

CLICKER 4 Inverter Shield U S E R M A N U A L

2. MOSFET Power Stage

The 3-phase inverter design is based on the Toshiba’s

SSM6K819R,LF low RDS(ON) power MOSFETs (1), which

meet the increasing need for smaller, eﬃcient MOSFETs,

providing the industry leading performance. They are part

of Toshiba’s smaller package portfolio which oﬀers a wide

choice of package sizes ranging from 1 x 1 mm-class

ultra-small packages to 3 x 3 mm, which contributes to

miniaturization of sets by reducing the mounting area

and increasing power density.

By combining the latest wafer processes with low-

resistance packaging technologies, an industry-leading

low ON-resistance level MOSFET is achieved.

The LM61 device (2), a precision, integrated-circuit

temperature sensor is also in this section, providing a

easy to read linear output to acquire board temperature.

1 2

MOSFET

P A G E 7

CLICKER 4 Inverter Shield U S E R M A N U A L

The DRV8323 (1) is an integrated gate driver for three-

phase motor drive applications. These devices integrate

three independent half-bridge gate drivers, charge

pump, and linear regulator for the supply voltages of the

high-side and low-side gate drivers, and signiﬁcantly

decrease system component count, cost, and complexity.

A standard serial peripheral interface (SPI) provides a

simple method for conﬁguring the various device settings

and reading fault diagnostic information through an MCU

on the Clicker 4 board.

3. Integrated Driver

INTEGRATED DRIVER

The DRV8323 integrates three bidirectional current sense

ampliﬁers for monitoring the current level through each of

the external half-bridges using a low-side shunt resistor. The

gain setting of the current sense ampliﬁer can be adjusted

through the SPI or hardware interface. The SPI method

provides additional ﬂexibility to adjust the output bias point.

Several on-board jumpers are available to enable either

single or three-phase current monitoring. To enable single

phase measurement connect jumpers J1, J2, and J3,

for three-phase measurement only jumper J4 should be

connected. Current monitoring signals are also connected

to side headers for external measurement, appropriate SMD

jumpers conﬁguration is needed to switch between on-board

and external measurement.

Several indication LEDs are available on board, UH (LD4), VH

(LD5), WH (LD6) LEDs (Blue) are used to indicate the state of

High-side gate driver control inputs. FLT1 LED (Red) is a fault

indicator, this LED turns on during a fault condition.

P A G E 8

CLICKER 4 Inverter Shield U S E R M A N U A L

4. Encoder

ENCODER

On board encoder ensures simple processing of the feedback

signals. The MAX14890E (1) incremental encoder receiver

from Maxim Integrated contains four diﬀerential receivers

and two single-ended receivers. On the Clicker 4 Inverter

Shield three diﬀerential inputs are exposed over terminal

blocks TB2, TB3 and TB4 (2). Additional terminal block TB5

(3) provides a 5V power source for externall components.

The diﬀerential receivers can be operated in RS-422 or

diﬀerential high-threshold logic (HTL) modes and are

optionally conﬁgurable for single-ended TTL/HTL operation.

All receiver input signals are fault protected to voltage shorts

in the ±40V range. The MAX14890E features a SPI interface

connected on the side header of the Inverter Shield, for easy

conﬁguring and reading information through an MCU on the

Clicker 4 board. The MAX14890E detects common RS-422/

HTL/TTL/DI faults. These faults include low diﬀerential input

signals, open-wire, short-circuits, and inputs voltages that

are outside the normal operating voltage range. FLT2 LED

(Red) turn on when a fault condition occurs.

32 1

P A G E 9

CLICKER 4 Inverter Shield U S E R M A N U A L

5. CAN

The CAN protocol is an ISO standard (ISO 11898) for serial

communication. It is widely used in industrial automation

as well as in automotive and mobile machine industry. The

MCP2561/2FD (1) is a high-speed CAN transceiver from

Microchip Technology. The device meets the automotive

requirements for CAN FD bit rates exceeding 2 Mbps, low

quiescent current, electromagnetic compatibility (EMC)

and electrostatic discharge (ESD). CAN network diﬀerential

signals CANL and CANH are exposed over terminal block TB6,

and TX/RX signals are connected to side header.

The jumper labeled as J8 (2) is used to enable the 120 Ohm

termination resistor.

CAN

2 1

P A G E 10

CLICKER 4 Inverter Shield U S E R M A N U A L

6. Headers

All important signals are routed to two 1x20 pin headers,

making them available for further connectivity.

21.

22.

23.

24.

25.

26.

27.

28.

29.

30.

31.

32.

33.

34.

35.

36.

37.

38.

39.

40.

10.

11.

12.

13.

14.

15.

16.

17.

18.

19.

20.

GND

EXT

I/O1

I/02

SCK

SDI

SDO

I/O

CAN

SPI PWR

ANALOG

PWM

DIGITAL

INTERRUPT

PWM INTERRUPT I/0 ANALOG SPI CANDIGITAL PWR

HEADERS

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The products of MikroElektronika are not fault – tolerant nor designed, manufactured or intended for use or resale as on – line control equipment in hazardous

environments requiring fail – safe performance, such as in the operation of nuclear facilities, aircraft navigation or communication systems, air traﬃc control, direct life

support machines or weapons systems in which the failure of Software could lead directly to death, personal injury or severe physical or environmental damage (‘High