STEVAL-IHM021V1 User Manual Datasheet by STMicroelectronics

September 2008 Rev 1 1/24

UM0580

User manual

100 W 3 phase inverter featuring L6390 and STD5NK52ZD

for vector control STEVAL-IHM021V1

Introduction

The 100 W 3-phase inverter featuring the L6390 and STD5NK52ZD for field-oriented control

(FOC) of permanent magnet synchronous motors (PMSM) demonstration board (also

referred to by its order code STEVAL-IHM021V1) is a 3-phase inverter designed to perform

the FOC of sinusoidal-shaped back-EMF PMSM - with or without sensors - with nominal

power up to 100 W.

The device’s flexible, open and high-performance design consists of a 3-phase inverter

bridge based on the STD5NK52ZD-1 power MOSFET in IPAK package and L6390 device,

the latest high-voltage half-bridge gate driver family featuring an integrated comparator for

hardware protection implementation (for example, against over-current, over-temperature,

etc) and an embedded operational amplifier suitable for advanced current sensing. The

system has been specifically designed to achieve accurate and fast conditioning of the

current feedback, thereby matching the requirements typical of high-end applications such

as field oriented motor control.

The board is compatible with 110 and 230 Vac mains and includes a power supply stage

with VIPer12AS-E (in buck configuration) to generate the +15 V and +3.3 V supply voltage

required by the application. Finally, the board can be interfaced with the STM3210B-EVAL

(STM32 microcontroller demonstration board) through a dedicated connector.

Figure 1. STEVAL-IHM021V1 demonstration board

AM01257v1

www.st.com

Contents UM0580

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Contents

1 Main features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1 Target applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 System architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3 Safety and operating instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.2 Intended use of the demonstration board . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.3 Installing the demonstration board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.4 Electronic connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.5 Operating the demonstration board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4 L6390 characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.1 Main features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.2 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5 STD5NK52ZD-1 characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

6 Electrical characteristics of the board . . . . . . . . . . . . . . . . . . . . . . . . . 11

7 Board architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

7.1 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

7.2 Gate driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

7.3 Amplifying network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

7.4 Brake feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

7.5 Temperature feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

8 Board schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

8.1 Gate driving circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

8.2 Overcurrent protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

8.3 Current sensing amplifying network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

8.4 Brake function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

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9 Using the STEVAL-IHM021V1 with the STM32 FOC firmware library . 20

9.1 Environmental considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

9.2 Hardware requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

9.3 Software requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

9.4 Software modifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

10 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

11 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

List of figures UM0580

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List of figures

Figure 1. STEVAL-IHM021V1 demonstration board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Figure 2. Motor control system architecture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 3. L6390 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 4. STD5NK52ZD-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 5. STEVAL-IHM021V1 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 6. Power supply block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 7. Inverter schematics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 8. Power supply schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 9. Detailed gate driving circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 10. Overcurrent protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 11. Current sensing amplifying network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 12. Brake circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

UM0580 Main features

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1 Main features

The 100 W 3-phase inverter has the following characteristics.

●Wide range input voltage

●Maximum power-up to 100 W at 230 Vac input.

●Power MOSFET STD5NK52ZD-1 (4.4 A, 520 V)

●Compatible with other power MOSFET in IPAK packages

●15 V auxiliary power supply connector

●Connector for interfacing with the STM3210B-EVAL board.

1.1 Target applications

●Refrigerator compressors

●Dishwasher pumps.

Power Supply Control Black A Power Block —>< motor=""> V

System architecture UM0580

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2 System architecture

A generic motor control system can be basically schematized as the arrangement of four

main blocks (Figure 2).

●A control block: its main tasks are to accept user command and motor drive

configuration parameters, and to provide digital signals to implement the appropriate

motor driving strategy

●A power block that makes a power conversion from the DC bus transferring it into the

motor by means of a 3-phase inverter topology

●The motor itself. The STEVAL-IHM021V1 board can drive any PMSM but the FOC itself

is conceived for sinusoidal-shaped back-EMF

●A power supply block that can accept from 86 to 260 Vac input voltages and provide the

appropriate levels to supply both the control block and power block devices.

Of the above motor control system architecture, the STEVAL-IHM021V1 includes the power

supply and power block hardware blocks.

The power block, based on the high voltage gate drivers L6390 and power MOSFET

STD5NK52ZD-1, converts the signals coming from the control block into power signals able

to correctly drive the 3-phase inverter and therefore the motor.

The power supply can be fed with 110- or 230-Vac mains and the maximum allowed input

power is 100 W at 230 Vacs (refer to Chapter 7: Board architecture).

In the control block, a J3 connector is mounted on both the STEVAL-IHM021V1 and

STM3210B-EVAL, which allows the STM32 microcontroller’s demonstration board to be

used as a hardware platform for development. Minor modifications may be applied to the

"STM32 FOC firmware libraries v1.0" for these to be used as a software platform for the

sensorless control of your PMSM (see Section 9.4).

Figure 2. Motor control system architecture

AM01258v1

UM0580 Safety and operating instructions

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3 Safety and operating instructions

3.1 General

Warning: During assembly and operation, the STEVAL-IHM021V1

demonstration board poses several inherent hazards,

including bare wires, moving or rotating parts and hot

surfaces. Serious personal injury and damage to the property

may occur if the kit or its components are used or installed

incorrectly.

All operations involving transportation, installation and use, as well as maintenance, should

be performed by skilled technical personnel (national accident prevention rules must be

observed). Skilled technical personnel refers to suitably-qualified people who are familiar

with the installation, use and maintenance of electronic power systems.

3.2 Intended use of the demonstration board

The STEVAL-IHM021V1 demonstration board is a component designed for demonstration

purposes only, and must not be used for electrical installations or machinery. Technical data

and information concerning the power supply conditions are detailed in the documentation

and should be strictly observed.

3.3 Installing the demonstration board

The installation and cooling of the demonstration kit boards must be in accordance with the

specifications and targeted application.

●The motor drive converters must be protected against excessive strain. In particular,

components should not be bent or isolating distances altered during transportation or

handling

●No contact must be made with other electronic components and contacts

●The boards contain electrostatically-sensitive components that are prone to damage if

used incorrectly. Do not mechanically damage or destroy the electrical components

(potential health risks).

3.4 Electronic connections

Applicable national accident prevention rules must be followed when working on the main

power supply with a motor drive. The electrical installation must be completed in accordance

with the appropriate requirements (for example, cross-sectional areas of conductors, fusing,

PE connections,…).

Safety and operating instructions UM0580

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3.5 Operating the demonstration board

A system architecture that supplies power to the STEVAL-IHM021V1 demonstration board

must be equipped with additional control and protective devices in accordance with the

applicable safety requirements (for example, compliance with technical equipment and

accident prevention rules).

Warning: Do not touch the demonstration board after it has been

disconnected from the voltage supply as several parts and

power terminals containing possibly-energized capacitors

need time to discharge.

mum: “MM:

UM0580 L6390 characteristics

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4 L6390 characteristics

4.1 Main features

●High voltage rail up to 600 V

●dV/dt immunity ± 50 V/nsec in full temperature range

●Driver current capability:

– 270-mA source

– 430-mA sink

●Switching times 75/35 nsec RISE/FALL with 1-nF load

●3.3-, 5-V TTL/CMOS inputs with hysteresis

●Integrated bootstrap diode

●Operational amplifier for advanced current sensing

●Comparator for fault protections

●Smart shut-down function

●Adjustable dead time

●Interlocking function.

4.2 Block diagram

Figure 3 shows the block diagram of the L6390 device.

Figure 3. L6390 block diagram

AM01259v1

C(l) n(2)

STD5NK52ZD-1 characteristics UM0580

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5 STD5NK52ZD-1 characteristics

The STD5NK52ZD-1 is an N-channel power MOSFET in IPAK package (520 V, 1.22 Ω,

4.4 A) Zener-protected, SuperMESH™.

●VDSS = 520 V

●RDS(on) < 1.5 Ω

●ID = 4.4 A

Note: Stresses above the limits shown in Ta b le 1 may cause permanent damage to the device.

Figure 4. STD5NK52ZD-1

Table 1. STD5NK52ZD-1 absolute maximum ratings

Symbol Parameter Value Unit

VDS Drain-source (VGS = 0) 520 V

VDGR Drain-gate voltage (RGS = 20 kO) 520 V

VGS Gate-source voltage ±30 V

IDDrain current (continuous) at TC = 25°C 4.4 A

IDDrain current (continuous) at TC = 100°C 2.7 A

IDM(1)

1. Pulse width limited by safe operating area.

Drain current (pulsed) 17.6 A

PTOT Total dissipation at TC = 25°C 70 W

AM01260v1

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6 Electrical characteristics of the board

Stresses above the limits shown in Ta b le 2 may cause permanent damage to the devices

present inside the board. These are stress ratings only and functional operation of the

device under these conditions is not implied. Exposure to maximum rating conditions for

extended periods may affect device reliability.

A 15-V bias current measurement may be useful to check the working status of the board. If

the measured value is considerably higher than the typical value, some damage has

occurred to the board. Supply the control board using a 15-V power supply connected to J10

respecting the polarity.

Warning: To avoid damaging the board when feeding the +15-V voltage

supply through the auxiliary connector (J10), remove jumper

J8 and supply the +15 V before connecting the mains.

Table 2. Board electrical characteristics

Board parameters

STEVAL-IHM021V1 Unit

Min Max

15 V auxiliary supply range – J10 14.5 17 V

15 V bias current (typical) 8 10 mA

Vmains – J7 30 270 Vac

L63” Buck converter Llnear regulator {k ‘ 93.3V "W

Board architecture UM0580

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7 Board architecture

The STEVAL-IHM021V1 can be schematized as shown in Figure 5.

7.1 Power supply

The power supply can address the AC input voltage ranging from 30 Vac up to 270 Vac. The

alternate current input is rectified by a diode bridge and a bulk capacitor to generate a direct

current bus voltage approximately equal to √2 Vac (neglecting the voltage drop across the

diodes and the bus voltage ripple). A VIPer12AS-E is then used in a buck converter

configuration to generate the +15-V supply voltage of the gate drivers. Finally, a linear

regulator (L78L33ABUTR) is used to generate the 3.3 V used to pull up the low side gate

driver inputs so as to prevent the undesired turn-on of low side switches when the J5

connector is unplugged.

Figure 6 shows a block diagram of the power supply.

Figure 5. STEVAL-IHM021V1 block diagram

AM01261v1

Figure 6. Power supply block diagram

AM01262v1

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7.2 Gate driving

As mentioned previously, gate driving of the switches is performed through the latest L6390

family of devices. Refer to Section 8.1 for detailed information on the gate driving circuit and

dead time insertion. A fault signal is also fed back to the J5 connector if an overcurrent is

detected.

7.3 Amplifying network

The voltages across the three shunt resistors are amplified by K to correctly condition the

current feedback signals and optimize the output voltage range for a given phase current

range and A/D converter input dynamics. Refer to Section 8.3 for more detailed information

on how to dimension the op-amp conditioning network depending on your needs.

7.4 Brake feature

The brake feature performs a motor brake by switching simultaneously to the low side power

MOSFET, thus shortening the motor phases.

Warning: This feature is mandatory in applications that require the

motor to operate in a flux-weakening region. In these

conditions, the back-EMF generated by the rotor’s spinning is

greater than the bus voltage and the brake feature prevents

the motor from acting as a generator destructively charging

the bus capacitance. Refer to Section 8.4 for additional

information.

7.5 Temperature feedback

Temperature feedback is performed by way of an NTC. It enables you to monitor the power

stage temperature so as to prevent any damage to the inverter caused by over temperature.

W J '5 g i I :H“ g‘ g

Board schematics UM0580

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8 Board schematics

This section illustrates and provides an in-depth description of the board schematics.

Figure 7. Inverter schematics

AM01263v1

am 943va m com

UM0580 Board schematics

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Figure 8. Power supply schematics

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R13 0 1485MB WT 02 STDSNK52ZD

Board schematics UM0580

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8.1 Gate driving circuit

Figure 9 shows the circuit used to turn the power MOSFETs on and off.

During the turn-on phase, the power MOSFET gate capacitances are charged through 50-Ω

resistors while the turn-off is secured by the D3 diode (or similar).

Use of the L6390D device always guarantees a minimum adjustable dead time (DT). This

dead time is applied to the HVG and LVG outputs whenever a dead time shorter than DT is

present on the HIN and LIN inputs. The R12, R32 and R52 values being equal to 47 kΩ,

set the minimum dead time to approximately 600 nsec.

8.2 Overcurrent protection

A hardware overcurrent protection has been implemented on the board taking advantage of

the comparator integrated inside the L6390D. The internal connection between the

comparator output and the shutdown block makes the intervention time of the overcurrent

protection extremely low, slightly above 100 nsec.

Figure 9. Detailed gate driving circuit

AM01265v1

Figure 10. Overcurrent protection

AM01266v1

x N: ‘ N m 5 CA We H :=9u’ cp. ;= m .414 ﬁ- 33v smxszzu uunnsom m km W m m m m. H m (:23 m 1‘2 w w m crow:

UM0580 Board schematics

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Since the overcurrent protection acts as soon as the voltage on CP+ rises above Vref

(approximately equal to 0.53 V), and given the default value of the shunt resistors (equal to

1.8/4 =0.45 Ω), it follows that the default value for the maximum allowed current (ICP) is

equal to:

Equation 1

If necessary, you can decrease the threshold by adding R37 (and similarly R55 and R18)

with the formula:

Equation 2

Similarly, you can increase the threshold by adding R44 (and similar) with the formula:

Equation 3

8.3 Current sensing amplifying network

Figure 11 shows the current sensing amplifying network during phase 2.

A15.1

shunt

Ref

CP ≅=

R40R37with

R40R37

R40

3.3V

R37

R37R40

Iref

shunt

CP >>

⎥

⎦

⎤

⎢

⎣

⎡

−

⋅=

R40R37with

R44

R40

shunt

ref

CP >>

⎟

⎠

⎞

⎜

⎝

⎛+⋅=

Figure 11. Current sensing amplifying network

AM01267v1

Board schematics UM0580

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The voltage at node "OPOUT2" can be computed as the sum of a bias and a signal

component, respectively equal to:

Equation 4

Equation 5

With the default values this gives:

●

As such, the maximum current amplifiable without distortion is equal to:

Equation 6

Note that you could modify the IMAX value by simply changing the values of the shunt

resistors.

8.4 Brake function

The STEVAL-IHM021V1 board provides a brake function that through the pull-up of a single

brake signal simultaneously turns the three low side switches ON , shorting the 3-phase

load. The feature is accessed using one single small-signal bipolar transistor (Q7), whose

function is to pull down the cathodes of six small signal diodes connected to each of the six

logic inputs (HIN1, , HIN2, , HIN3, ) of the L6390 gate drivers. The in-

series resistors together with the input lines avoid any conflict with the external controller

input signals, giving priority to the brake signal (see Figure 12).

⎟

⎠

⎞

⎜

⎝

⎛+

=R42

R39R38

R41//R43R36

R41//R43

3.3VBIAS

⎟

⎠

⎞

⎜

⎝

⎛+

⋅⋅= R42

R39R38

R36//R43R41

R36//R43

RIV SHUNTSIGN

V1.86VBIAS

IR2.91V SHUNTSIGN ⋅⋅

A1.1

495.0

R91.2

86.13.3

SHUNTSHUNT

MAX ==

⋅

−

LIN 1 LIN 2 LIN 3

UM0580 Board schematics

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The brake signal is active high and 3.3-/5-V-compatible.

Warning: This feature is mandatory in applications that require the

motor to operate in the flux-weakening region. In these

conditions, the back-EMF generated by the rotor spinning is

greater than the bus voltage and the brake feature prevents

the motor from acting as a generator destructively charging

the bus capacitance.

Figure 12. Brake circuit

Table 3. Truth table

HINx Brake LVGx HVGx Load

x x 0 x 0 0 Tri-state

xx11 1 0 brake

0010 1 0

Normal operation

0110 0 0

1010 0 0

1110 0 1

AM01268v1

LIN

Using the STEVAL-IHM021V1 with the STM32 FOC firmware library UM0580

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9 Using the STEVAL-IHM021V1 with the STM32 FOC

firmware library

The "STM32 FOC firmware library v2.0" runs on the STM3210B-MCKIT and does the field-

oriented control (FOC) of a permanent magnet synchronous motor (PMSM) in both sensor

and sensorless configurations.

This section describes the modifications to be applied to the "STM32 FOC firmware library

v2.0" in order for the firmware to be compatible with the STEVAL-IHM021V1.

9.1 Environmental considerations

Warning: The STEVAL-IHM021V1 demonstration board must only be

used in a power laboratory. The voltage used in the drive

system presents a shock hazard.

The kit is not electrically isolated from the DC input. This topology is very common in motor

drives. The microprocessor is grounded by the integrated ground of the DC bus. The

microprocessor and associated circuitry are hot and MUST be isolated from user controls

and communication interfaces.

Warning: Any measurement equipment must be isolated from the main

power supply before powering up the motor drive. To use an

oscilloscope with the kit, it is safer to isolate the DC supply

AND the oscilloscope. This prevents a shock from occurring

as a result of touching any single point in the circuit, but

does NOT prevent shocks when touching two or more points

in the circuit.

An isolated AC power supply can be constructed using an isolation transformer and a

variable transformer. A schematic of this AC power supply is shown in the application note

"AN438, TRIAC + Microcontroller: safety precautions for development tools". Although this

application note was written for TRIAC, the isolation constraints still apply for switching

semiconductor devices such as MOSFETs.

Note: Isolating the application rather than the oscilloscope is highly recommended in any case.

UM0580 Using the STEVAL-IHM021V1 with the STM32 FOC firmware library

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9.2 Hardware requirements

The following items are required to run the STEVAL-IHM021V1 together with the "STM32

FOC firmware library".

●The STEVAL-IHM021V1 board and MB525 board (STM32 evaluation board with MC

connector).

●A high-voltage insulated AC power supply up to 230 Vac.

●A J-link programmer (not included in the package).

●A J-link insulating board (not included in the package).

●A 3-phase brushless motor with permanent magnet rotor (not included in the package).

●An insulated oscilloscope (as necessary).

●An insulated multimeter (as necessary).

9.3 Software requirements

To customize, compile and download the "STM32 FOC firmware library v2.0" motor control

firmware, the IAR tool "EWARM v5.20 (or v5.11)" must be installed. The free 32-k limited

version (referenced as the "KickStart" version) is available for downloading at:

http://supp.iar.com/Download/SW/?item=EWARM-KS32-442A.

9.4 Software modifications

The "STM32 FOC firmware library v2.0" is compatible with the L6386 high-side driver. To

make the firmware compatible with the L6390, you must change the polarity of the PWM

driving the low-side transistors.

To do so, Follow these steps.

1. In "stm32f10x_svpwm_3shunt.c" substitute line 177 with:

TIM1_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low;

2. In "stm32f10x_svpwm_3shunt.c" substitute line 88 with:

#define IDLE_LOW_SIDE_POLARITY_L6390 TIM_OCIdleState_Set

#define LOW_SIDE_POLARITY IDLE_LOW_SIDE_POLARITY_L6390

3. In "MC_MotorControl_Layer.c" substitute lines 49 and 50 with:

#define NTC_THRESHOLD (u16) ((225 * (NTC_THRESHOLD_C - 25)) + 10477)

#define NTC_HYSTERIS (u16) ((225 * (NTC_THRESHOLD_C - NTC_HYSTERIS_C - 25)) + 10477)

4. In "MC_MotorControl_Layer.c" substitute line 382 with:

return ((u8)(((s16)w_Temp_Average - 10477)/225 + 25));

5. In "MC_Control_Param.h" set the required temperature threshold and hysteresis with:

#define NTC_THRESHOLD_C 60 // (°C)

#define NTC_HYSTERIS_C 5 // Temperature hysteresis (°C)

References UM0580

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10 References

This user manual provides information on the hardware features and use of the

STEVAL-IHM021V1 demonstration board. For additional information on supporting software

and tools, refer to the following:

●STD5NK52ZD-1 datasheet

●L6390 datasheet

●http://www.st.com/mcu/ web site, which is dedicated to the complete

STMicroelectronics microcontroller portfolio.

UM0580 Revision history

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11 Revision history

Table 4. Document revision history

Date Revision Changes

29-Sep-2008 1 Initial release.

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