STEVAL-IHM015V1 STMicroelectronics, STEVAL-IHM015V1 Datasheet - Page 41

• Manufacturer Part Number: STEVAL-IHM015V1
• Description: BOARD EVAL ST7FMC2S4T6/STS8DNH3L
• Manufacturer: STMicroelectronics
• Type: Motor / Motion Controllers & Driversr

Specifications of STEVAL-IHM015V1

• Main Purpose: Power Management, Motor Control
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: ST7FMC2S4, STS8DNH3LL
• Primary Attributes: 3-Ph BLAC, BLDC, PMAC or PMDC Motors
• Secondary Attributes: Graphical User Interface
• Input Voltage: 5 V to 48 V
• Product: Power Management Modules
• Silicon Manufacturer: ST Micro
• Core Architecture: ARM
• Core Sub-architecture: ARM7TDMI
• Silicon Core Number: ST7
• Silicon Family Name: ST7MCx
• Kit Contents: Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: ST7MC2S4, STS8DNH3LL
• Other names: 497-8213

UM0432
7.5.10
7.5.11
7.5.12
Detecting the BEMF using the internal reference
First of all, it is necessary to correctly size the value of the R39, R50 and R63 resistors using
the following formula.
Equation 4
Set the jumper as described in
You must then configure the firmware. To do this, remove the comment in the following
define in the spec_settings.h file.
#define BEMF_SAMPLING_DURING_TON
To set the motor to run at 100% of the duty cycle, change the following defines in the
spec_settings.h file:
#define RV1_SEL 0
#define steady_duty
#define Max_Duty ((u16)(((u16)(mem_MCPOH)<<16)+mem_MCPOL)+1)
This is the default configuration and the BEMF sampling is performed using the 2.5-V
internal reference.
Detecting the BEMF using the external reference V
The system can be set up to use V
the settings described in
Equation 5
Also set J21 between pins 2 and 3 and change the following define in the mtc.h file.
#define mem_MCRC_GE ((u8)71)
You must then calculate V
Equation 6
and modify the following define in the adc.c file replacing the calculated value:
#define HVBUS_THRESHOLD
Detecting the BEMF using the external reference and reconstructed
neutral point of the motor
The system can also be configured to use the reconstructed neutral point of the motor as
reference.
To do this – in addition to the settings described in
resistor with the same value as R39, R50 and R63, and set J21 between pins 1 and 2.
((u8)255)
Section
V
Busth
busth
VBusth
Table
using the formula:
=
R
7.5.10, you must replace R74 using the formula:
Bus/2
39 50 63
(
V
,
Bus
14.
R
,
74
as the external reference. In this case, in addition to
+
=
1
=
)
-------------------------- -
V
--------------------------------------- -
⋅
⎛
⎝
117500
-------------------------------- 1024
R
Bus
Vbus
------------- -
74
2
55000
–
+
R
Section 7.5.10
2.5
74
47000
⎞
⎠
–
2.5
⋅
------------ -
5
Motor control operations
– you must mount the R71
Bus/2
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