ST STEVAL-CTM015V1 User manual

Introduction
The STEVAL-CTM015V1 evaluation kit is designed to provide a complete solution for a three-phase Switched Reluctance Motor
(SRM) drives based on the asymmetric half bridge flexible converter topology.
It is composed by the STEVAL-CTM015A1 drive board, the STEVAL-CTM015A2 power board, and an heatsink already
assembled. Additional information is available in the Ordering information of this document.
The drive board features a DC-DC power supply based on VIPER26, LD1117, STM32F303 as MCU, L6395D high voltage
single-chip high and low-side gate drivers for N-channel power MOSFETs or IGBTs.
The power board features an insulated metal substrate (IMS), NTCs for thermal protection, decoupling gate resistors for each
IGBT, LMV331I comparators for over current protection, STGB30H60DFB trench gate field-stop together with STTH15RQ06
Turbo 2 Soft Ultrafast Recovery Diode.
The STEVAL-CTM015V1 features by default the three-shunts resistors current sensing network based on TSV991IL, but the
board supports the Insulated Current Sensors (ICS) for phase currents reading.
Figure 1. STEVAL-CTM015V1 evaluation kit
Getting Started with STEVAL-CTM015V1, 1kW, 400Vdc, Three-Phase Switched
Reluctance Motor drive
UM3174
User manual
UM3174 - Rev 1 - July 2023
For further information contact your local STMicroelectronics sales office. www.st.com

1 Evaluation kit features
Electrical and functional characteristics
The kit features the following man characteristics:
• – Power board with insulated metal substrate (IMS) hosting six STGB30H60DFB IGBTs and six
STTH15RQ06 diodes in D2PAK-2 package
– Three High voltage single-chip high and low-side gate drivers (L6395D) with independent control of
high and low-side as required by this application
– Maximum power 1 kW(1) at 400 Vdc
– Support to quadrature incremental encoder and to Hall effect rotor position sensor
– Over current protection network through LMV331ICT
– DC Bus Voltage sensing network for over and under voltage protection
– NTC sensing network for overheat protection
– Predisposition for three phase Insulated Current Sensors (ICSs)
– Phase current sensing through three shunt resistors and TSV991IL OpAmp
1. Tested in appliance.
UM3174
Evaluation kit features
UM3174 - Rev 1 page 2/44

2 Getting started
2.1 Safety precautions
2.2 General terms
All operations involving transportation, installation and use, as well as maintenance, has to be carried out by
skilled technical personnel (national accident prevention rules must be observed). For the purpose of these basic
safety instructions, "skilled technical personnel" are considered as suitably qualified people who are familiar with
the installation, use, and maintenance of power electronic systems.
Danger: • Use the board only after applying a fire-resistant cover. The cover is not included in
the board package.
• There is danger of serious personal injury, property damage or death due to electrical
shock and burn hazards if the kit or components are improperly used or installed
incorrectly.
Warning: • The kit is not electrically isolated from the high-voltage supply AC-DC input.
• The evaluation board is directly linked to the mains voltage. No insulation is ensured
between the accessible parts and the high voltage. All measurement equipment must
be isolated from the mains before powering the board.
• When using an oscilloscope with the evaluation board, it must be isolated from the
AC line.This prevents shock from occurring as a result of touching any single point in
the circuit, butdoes NOT prevent shock when touching two or more points in the
circuit.
• Attention Observe Precautions For Handling Electrostatic Discharge Sensitive
Device.
UM3174
Getting started
UM3174 - Rev 1 page 3/44

Caution: During assembly, testing, and operation, the evaluation board poses several inherent hazards, including bare
wires, moving or rotating parts and hot surfaces. All operations involving transportation, installation, use and
maintenance must be performed by skilled technical personnel who is familiar with the installation, use and
maintenance of power electronic systems.
Work area safety
The work area must be clean and tidy.
Do not work alone when boards are powered.
Protect the area against any unauthorized access by putting suitable barriers and signs.
A system architecture that supplies power to the evaluation board must be equipped with additional control and
protective devices in accordance with the applicable safety requirements (i.e., compliance with technical
equipment and accident prevention rules).
2.3 Intended use of evaluation kit
This evaluation kit is designed for demonstration purposes only and shall not be used for any commercial
purpose.
The evaluation kit is destined for professionals and to be used solely at research and development facilities for
such purposes!
The technical data, as well as information concerning power supply conditions, must be taken from the
relevant documentation and strictly observed.
2.4 Evaluation kit setup
• The evaluation kit must be set up in accordance with the specifications and the targeted application.
• The board contains electro-statically sensitive components that are prone to damage through improper
use.
• Electrical components must not be mechanically damaged or destroyed.
• Avoid any contact with other electronic components!
• During the motor driving, converters must be protected against excessive strain. Do not bend or alter the
isolating distances any components during transportation or handling.
• The use of a transparent and insulating removable enclosure is strongly recommended!
Table 1. Functioning electrical end setup parameters
Parameter Min. Typ. Max. Unit
Ambient Temperature during functioning - 25 - °C
External auxiliary DC supply voltage (EXT_15V) 14 15 15 V
Maximum tested Input power - 1000 - W
Maximum Tested Output power - 900 - W
Maximum output phase peak current 10 A
DC-Link Input range 12 - 420 V
Input rms current limit for over current protection - 13 - A
2.5 Electronics 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.
A system architecture which supplies power to the evaluation board must be equipped with additional control and
protective devices in accordance with the applicable safety requirements (e.g., compliance with technical
equipment and accident prevention rules).
This evaluation kit must be connected only to an insulated DC power supply featuring over current protection and
allowing to set immediate rms output current limit.
UM3174
Intended use of evaluation kit
UM3174 - Rev 1 page 4/44

2.6 Electrical safety
Remove power supply from the evaluation board and electrical loads before performing any electrical
measurement.
Arrange measurement setup, wiring and configuration paying attention to high voltage sections.
Once the setup is complete, power the board.
Do not touch the evaluation board when it is powered or immediately after it has been disconnected from the
voltage supply as several parts and power terminals containing potentially energized capacitors need time to
discharge, and heat-sinks and transformers may still be very hot. The kit is not electrically isolated from the AC-
DC input.
Warning: The evaluation kit is provided without enclosures as required by such kind of kits designed
for the research and development activities.
It is strongly recommended to use a transparent and insulating removable enclosure, during
the tests as protection against:
• direct or indirect contact with dangerous voltages,
• electric arcs generation
2.7 Personal Safety
Always wear suitable personal protective equipment, such as insulating gloves and safety glasses.
Take adequate precautions and install the board preventing accidental touch.
Use protective shields, such as insulating box with interlocks.
2.8 Storage of charge
The bulk capacitors can maintain the charge for some time after removing the DC power supply. Ensure the
VBUS red led is switched-off before to handle the board.
2.9 High temperature and flammability
Warning: The evaluation kit is provided without enclosures as required by such kind of kits designed
for the research and development activities. The user is strongly advised not to leave the
system without supervision white it is power supplied and to take care not to place
flammable materials nearby.
2.10 Dangerous surface or edges
Pay attention to sharp pins.
UM3174
Electrical safety
UM3174 - Rev 1 page 5/44

2.11 Electromagnetic compatibility
The STEVAL-CTM015V1 evaluation kit respects the immunity requirements of the EN 55035, EN 61000-6-1
standards.
The STEVAL-CTM015V1 evaluation kit can cause radiated emissions beyond limits of the standards EN 55032,
EN 61000-6-3 standards.
The following figures show the horizontal and vertical antenna polarization.
The measurements have been made using a ferrite (Technopartner 0444164181)with 4 loops on power supply
cable, as shown below:
Figure 2. DC input wires - Ferrite connection
Warning: The user must observe the indication reported in this document about the intended use and
instructions.
Frequency range: 30 MHz - 1000 MHz
Test site: Semi anechoic chamber
Measurement distance: 10 m
UM3174
Electromagnetic compatibility
UM3174 - Rev 1 page 6/44

Figure 3. Antenna Polarization Horizontal results
Figure 4. Antenna Polarization Vertical results
UM3174
Electromagnetic compatibility
UM3174 - Rev 1 page 7/44

3 Evaluation kit overview
Figure 5. STEVAL-CTM015V1 block diagram
Figure 6. Main blocks of the STEVAL$CTM015A1A drive board
Gate
Drivers
L6395D
Power
Supply
Viper26L
LD1117S50
LD1117S33C
MCU
STM32F303CBT
Figure 7. Main blocks of STEVAL$CTM015A2B power board
Asymmetric
H-Bridge
STTH15RQ06
STGB30H60DFB
Over Current
Protection
LMV331ICT
UM3174
Evaluation kit overview
UM3174 - Rev 1 page 8/44

3.1 DC input voltage
3.1.1 Voltage connection
The DC Link voltage must be provided through the CN5 screw connector.
Caution: Use only insulated laboratory power supply featuring current limitation and protection to power supply the
evaluation kit.
3.1.2 Input voltage modes
The evaluation kit allows to configure two different modalities regarding the 15 V voltage and subsequent 5 V and
3.3 V:
•INT_15V mode: Internal 15 V voltage generation through on-board DC-DC flyback converter
•EXT_15V mode: External 15 V is provided by laboratory DC power supply
3.1.3 Internal 15 V mode selection
The board features a DC-DC flyback converter for 15V generation (INT_15V), based on VIPer26L device.
Close the jumper J16 between 1-2 pins and J17 between 1-2 pins to enable this conversion stage.
In this case ensure that no voltage is provided on CN6 connector (Ext15V) .
Figure 8. Internal 15 V mode activation details
3.1.4 External 15 V mode selection
The DC-DC flyback converter for 15V generation can be disabled leaving open the jumper J16 1-2 pins and
closing J17 between 2-3 pins.
In In this case an external voltage 15 ± 1V (EXT_15V) must be provided using the CN6 connector.
Figure 9. External 15 V mode activation details
UM3174
DC input voltage
UM3174 - Rev 1 page 9/44

3.1.5 DC-Link Voltage range
• If INT_15V mode is used the tested range voltage is 360 - 420V allowing the right behavior of the flyback
converter.
• If EXT_15V mode is used the maximum DC Link is 420 V and there is not limitations about its minimum
value.
Caution: Do not handle the board while the VBUS red led is switched-on even if the voltage source has been switched-off
since the bulk capacitors can maintain for some time a storage of charge.
3.2 Motor terminals connection
The six terminals U1, U2, V1, V2, W1, W2, of the switched reluctance motor (SRM) must be connected,
respectively, to the CN2, CN3 and CN4 screw connector.
The connection should respect that the current is outgoing from the U1, V1, W1 connections, respectively.
3.3 Push buttons
The RESET button (SW1) performs the reset of the STM32.
The USER button (SW2) is a general-purpose button, that the user can configure to perform any action, for
example, start-stop motor rotation.
3.4 Switch mode selection
The evaluation kit features both soft and hard chopping.
The first is a technique that consists of in to apply a PWM signal to the high side power switch leaving switched-
on the low side during the entire phase turn-on period.
The second consists of apply to both high and low-side power switched the same PWM signal during the phase
turn-on period.
Table 2. Jumper configuration
Mode Jumper configuration
Soft Chopping J1, J2, J3: between 2-3
Hard Chopping J1, J2, J3: between 1-2
3.5 Speed/position sensor
The speed/Position sensor network is designed to support Quadrature Incremental Encoder (A, B, Z signals) or
other digital sensor based on pulse signals such as Hall effect sensors.
The input connector is the CN10 and connect the A, B, Z (or H1, H2, H3) signal in the 1,2.3 pins, respectively, and
sensor Vcc and GND on the 4 and 5 pins.
Figure 10. CN10 connector position sensor
Vcc pin of CN10 connector is the sensor supply voltage and it can be selected through the J39 connector,
between 5.5V and 3.3V, both provided by the on-board DC-DC power supply. Provide external voltage (max 12V)
directly between the SENSOR_VCC (pin 2) and GND (pin 4) pins (see Table 3. Sensor supplying voltage
selection for more details).
UM3174
Motor terminals connection
UM3174 - Rev 1 page 10/44

Table 3. Sensor supplying voltage selection
Voltage Jumper Position
+5V J39 2-3
3.3V J39 1-2
External Voltage (max 12V) J39 Open
3.6 LED diodes descriptions
The VBUS red led indicates that potentially dangerous voltage is present on DC bus and then across the
terminals of bulk capacitors.
Caution: Do not handle the board while this led is switched-on even if the voltage source has been switched-off.
The 15V and 3V3 led diodes indicates, respectively, the presence of these two levels of voltage used to power
supply the gate drivers and the MCU.
3.7 STLINK V3 debugger and programmer connection (CN1)
The board supports the STLINK-V3SET modular in-circuit debugger and programmer for STM32/STM8.
The same connector supports the virtual COM, serial communication between MCU and PC.
To do this, the STLINK-V3 device must be connected to the connector CN1 as shown in the figure. (for more
details about STLINKV3, please refer to documentation available on www.st.com)
Figure 11. STLINK V3 connector (CN1)
UM3174
LED diodes descriptions
UM3174 - Rev 1 page 11/44

4 Default firmware
The evaluation kit is programmed with a default firmware that consists of performing a current control at constant
frequency.
The firmware has been tested with a three-phase load (RL load) having the following specifics.
• R = 10.0 Ω
• L = 5.2 mH – 5 Arms, 10 Apk
• Iref = 6A
The user must ensure the jumpers J1, J2 and J3 are connected between 2-3 pins and the selected DC input
mode is INT_15V.
Once the laboratory DC power supply and the RL load terminals are connected, respectively, to the DC input
connector (CN5) and in the CN2, CN3 and CN4, the user can switch-on the power supply.
The led diodes will light-on indicating the presence of the following voltage levels:
• D64: VBUS
• D29: 15 V
• D15: 3.3 V
At this point, the user can click on the RESET button (SW1) and then on the USER button (SW2) to start the
control.
Figure 12. Phase currents - Oscilloscope capture
UM3174
Default firmware
UM3174 - Rev 1 page 12/44

5 Test reports
5.1 Temperature measurements
Figure 13. Temperature measurements at 420W, 400V
The temperature measurements of the Power Board have been updated at nominal power during tests in the
appliance.
Two different NTC sensors have been used:
• On-board NTC: B57351V5103J060 (10 kOhm)
• External NTC placed on the IGBT case: B57703M103G (10kOhm)
Equipment tested with three phase switched reluctance motor rotating at 28100 rpm and inverter switching
frequency equal to 24 kHz. DC input power equal to 1020 W.
UM3174
Test reports
UM3174 - Rev 1 page 13/44

Table 4. Temperature measurements at 1000 W of Power board STEVAL-CTM015A2
Supply voltage (V) 400 - -
Ambient temperature during test Tamb (°C) 25 - -
Maximum measured temperature T of part/at: T (°C) Allowed Tmax (°C)
Power board - STEVAL-CTM015A2
PWB of power board (T130 °C) 100 130
Transistor Q2 (T150 °C) 98 150
Diode D17 (T175 °C) 96 175
The Table 4 confirms the results reported in the Figure 13 also at nominal power where the measured
temperatures are into the allowed range.
The listed parts regard only the power board since they are the only ones that depends on the power level.
UM3174
Temperature measurements
UM3174 - Rev 1 page 14/44

6 Schematic diagrams
Figure 14. STEVAL-CTM015A1 circuit schematic (1 of 12)
SOFT
SWITCHING
HARD
SWITCHING
HARD
SWITCHING
SOFT
SWITCHING
HARD
SWITCHING
SOFT
SWITCHING
LS _U
LS _V
LS _W
+15V
+15V
+15V
+15V
+15V
+15V
P WM_TIM1 _C H1
P WM_UH
Out_U1
P WM_UL
P WM_TIM1 _C H2
P WM_VH
Out_V1
P WM_VL
P WM_TIM1 _C H3
P WM_WH
Out_W1
P WM_WL
J 3
1 2 3
J 1
1 2 3
D4
S TTH10 8A
C6
470nF
R7
75
R1
75
C3 1uF
D8
BAT30KFILM
J 2
1 2 3
C2
470nF
R5
75
TP 59
5001
R12
75
TP 60
5001
C4
470nF
D2
BAT30KFILM
TP 61
5001
R10
75
D5
BAT30KFILM
R3
75
D9
BAT30KFILM
J 47
J um pe r_F e ma le
TP 50
5001
TP 58
5001
C1 1uF
D6
BAT30KFILM
R8
75
TP 48
5001
R6
75
D3
BAT30KFILM
R2
75
J 44
J um pe r_F e ma le
C5 1uF
J 48
J um pe r_F e ma le
U3
L6395D
1LIN
2HIN
3VCC
4GND 5
LVG
6
OUT
7
HVG
8
BOOT
TP 46
5001
R11
75
U2
L6395D
1LIN
2HIN
3VCC
4GND 5
LVG
6
OUT
7
HVG
8
BOOT
TP 49
5001
U1
L6395D
1LIN
2HIN
3VCC
4GND 5
LVG
6
OUT
7
HVG
8
BOOT
R4
75
TP 47
5001
R9
75
D7
S TTH10 8A
D1
S TTH10 8A
P C1 3
P A8
P C1 4
P A9
P C1 5
P A10
UM3174 - Rev 1 page 15/44
UM3174
Schematic diagrams

Figure 15. STEVAL-CTM015A1 circuit schematic (2 of 12)
Input DC
Voltage
360-420V
Remove Ohm resistor on pin 8 of
STLINKV3 connecor if SPI is used
MCU SPI and USART
STLinkV3 Connector
PC13,PC14,PC15 are
available as GPIO
only if HARD
SWITCHING is used
Motor windings connector DC Bus Voltage Connector
SWD External 15V (optional)
Digital GPIO Input & Output
W1
W2
V2
U2
U1
V1
Debug Output
PB11 default LED
S WDIO
S WC LK
S P I1 _S C K/S WO
NR S T
US ART1 _RX US ART1 _TX
S WDIO
S WC LK
NR S T
+VDC
VDD
ph a s e _U1
ph a s e _U2
GND_P
ph a s e _V1
ph a s e _V2
ph a s e _W 1
ph a s e _W 2
S P I1 _S C K/S WO
S P I1 _MIS O FAULT_ LED
S P I1 _MOS I LS _U
DAC CH1 US ART1 _TX LS_V
US ART1 _RX LS _W
P WM_In pu t
EXT_15V
R13
0.0
TP 1
5001
CN1
Co n1 4-m a le
1 2
3 4
5 6
7 8
9 10
11 12
13 14
CN3
1
2
R14
47k
CN4
1
2
J 40
1-pin Ma le He a de r
1
J 8
1-pin Ma le He a de r
1
CN6
1
2
CN5
1
2
CN9
co n4 -s trip -ma le
1
2
3
4
CN7
1
2
3
4
5
6
CN2
1
2
R15
47k
CN8
1
2
3
4
5
6
P A13
P A14
NR S T
P B7 P B6
P B1 1
P C1 3
P C1 4
P C1 5
P A15
UM3174 - Rev 1 page 16/44
UM3174
Schematic diagrams

Figure 16. STEVAL-CTM015A1 circuit schematic (3 of 12)
Current Sensing ADC inputCurrent Sensing ADC input
selection
ADC _C urre nt_ U
ADC _C urre nt_ V
ADC _C urre nt_ W
cu rr_U_Op a mp cu rr_U_ICS
cu rr_V_O pa m p cu rr_V_ICS
cu rr_W_O pa mp cu rr_W_ICS
R16
10k
J 14
1 2 3
R18
10k
C71nF
J 51
J um pe r_Fe m a le
TP 5
5001
J 15
1 2 3
C81nF
J 52
J um pe r_Fe m a le
TP 3
5001
J 13
1 2 3
TP 7
5001
J 50
J um pe r_Fe m a le R17
10k
C91nF
curr_U_filt_input
curr_V_filt_input
curr_W_filt_input
curr_U_filt_input
curr_V_filt_input
curr_W_filt_input
UM3174 - Rev 1 page 17/44
UM3174
Schematic diagrams

Figure 17. STEVAL-CTM015A1 circuit schematic (4 of 12)
Reset User
LS_U, LS_V, LS_W are available
as GPIO only if hard switching
method is used
P WM_TIM1_ CH1
P WM_TIM1_ CH2
P WM_TIM1_ CH3
FAULT_BKIN
ADC_ Curre nt_ U
ADC_ Curre nt_ V
ADC_ Cu rre nt_ W
VDC s e ns e
Te mp s e ns e
Voltage U - INM
Voltage U - INP
Voltage U - OUT
Voltage V - INM
Voltage V - INP
Voltage V - OUT
Voltage W - INM
Voltage W - INP
Voltage W - OUT
US ART1 _TX
US ART1 _RX
P os _S e ns or C H1
P os _S e ns or C H2
P os _S e ns or C H3
S P I1 _S C K/S WO
S P I1 _MIS O
S P I1 _MOS I
DAC CH1
P WM_In pu t
S WDIO
S WC LK
NR S T
OS C _IN
OS C _O UT
OS C _INOS C _O UT
LS _V
LS _W
US E R
FAULT_LED
LS _U
FAULT_LED
US E RNR S T
VDD
VDDA
VBAT
VDDVDDA VBAT
VDD VDD
3v3
VDD
/
S W1
FS M4J S MA
1 4
2 3
Y1
8MHz
13
2
1 of 2
U4B
S TM3 2F 30 3C BT
PC13 2
PC14-OSC32_IN 3
PC15-OSC_OUT 4
PF0-OSC_IN 5
PF1-OSC_OUT 6
NRS T 7
PA0
10
PA1
11
PA2
12
PA3
13
PA4
14
PA5
15
PA6
16
PA7
17
PB0
18
PB1
19
PB2
20
PB10
21
PB11
22
PB12
25
PB13
26
PB14
27
PB15
28
PA8
29
PA9
30
PA10
31
PA11
32
PA12
33
PA13
34
PA14
37
PA15
38
PB3
39
PB4
40
PB5
41
PB6
42
PB7
43
BOOT0 44
PB8
45
PB9
46
C15
1 uF
C12
0.1uF
R20
100k
C17 0.1uF
C14
0.1uF
C13
0.1uF
D10
LS L296-P 2 Q2-1-Z
AC
R21
10k
R22
510
R19
10k
C16
0.1uF
C11
0.1uF
2 of 2
U4A
S TM3 2F 30 3C BT
VBAT
1
VSS A/VREF-
8VDDA/VREF+ 9
VSS
23 VDD 24
VSS _1
35 VDD_1 36
VSS _2
47 VDD_2 48
C18 0.1uF
S W2
FS M4J S MA
1 4
2 3
C10
1 uF
0 0
L1
1 2
NR S T
P A13
P A14
P A8
P A9
P A10
P B1 2
P A0
P B2
P B1 3
P A1
P B1 5
P A3
P A7
P A2
P A5
P B1 4
P A6
P B1 0
P B0
P B1
P B6
P B7
P A11
P A12
P B8
P B3
P B4
P B5
P A4
P A15
P B9
P C1 3
P C1 4
P C1 5
P F0
P F1
P B1 1
UM3174 - Rev 1 page 18/44
UM3174
Schematic diagrams

Figure 18. STEVAL-CTM015A1 circuit schematic (5 of 12)
DC-DC 7V/5V
+5V/2A
EXT_15V
+15V/1A
DC-DC 7V/3.3V
Voltage Clamp Snubber
INT_15V
DC-DC FLYBACK 400V/15V-7V
+15V
+Vbus
+7V +5V 3v3
+Vbus +15V 3v3
EXT_1 5V
GND_P
+
C28
56 uF
12
U7 LD11 17 S 33 CTR
Vout_2 2
GND
1
Vin
3
Vout_4 4
R29
18 k
D15
LP L296-J 2L2-25-Z
AC
+
C26
2.2u F
12
J 53
J um p e r_ Fe m a le
R27
0.0
TP 45
50 01
C25
0.1u F
R13 3
68K
R13 1
68K
TP 10
50 01
R12 4
3.9k
U14
VIP ER 26 LD
COMP
8
DRAIN4 16
FB
7
VDD 5
GND1
1
DRAIN3 15
DRAIN2 14
DRAIN1 13
GND2
2
x.C.
3x.A. 4
LIM
6
N.C.1
9N.C.2
10 N.C.3 11 N.C.4 12
C29
150nF
D12
S TTH1L06 A
+
C22
33 0uF
12
J 16
J UMP ER -c on 2- s trip-m a le
C los e
R28
51 0
C30
1n F
D13
S TP S 1L60 A
R23
47 K
R26
56 k
D14
1N41 48WS
J 54
J um p e r_ Fe m a le
C21
4.7n F
R31
16 .2 k
J 17
1 2 3
R132
68 K
R25
0.0
TP 8
50 01
+
C23
330uF
12
U5 LD11 17 S 50 TR
Vout_2 2
GND
1
Vin
3
Vout_4 4
+
C24
56 uF
12
D63
2.7V 500m W
R30
10 0K
TP 9
50 01
+
C27
10 uF
12
R24
0.0
D11
S TP S 21 50 A
D64
LS L296-P2Q2-1-Z
AC
T1
W E_ TRAS F
11
3
5
2
4
8
13
10
1 14 12
6 7 9
D29
LP L296-J 2L2-25-Z
AC
Ext15V
+1 5V_TR ASF
Ext15V
+1 5V_TR ASF
UM3174 - Rev 1 page 19/44
UM3174
Schematic diagrams

Figure 19. STEVAL-CTM015A1 circuit schematic (6 of 12)
DRIVE BOARD
+VDC +Vbus
3v33v3
3v3
GND_P
P W M_VH
P W M_W H
P W M_UH
Ou t_ V1
Ou t_ W 1
Ou t_ U1
P W M_W L
c urr_ W _O p am p
P W M_VL
curr_V_Op a m p
P W M_UL
curr_U_O pamp
FAULT_BKINFAULT_BKINFAULT_BKIN
NTC _S igna l
Ou t_V1 ph as e _V2
Ou t_ W 1 p ha s e _ W 2
Ou t_U 1 ph as e _U 2
J 31
c on4 -2x2- s trip- fe ma le
1 2
3 4
S C8
Con1
1
S C3
Con1
1
J 37
c on6 -2x3- s trip- fe ma le
1 2
3 4
5 6
J 32
c on4 -2x2- s trip- fe ma le
1 2
3 4
D65
S TTH5 L06 B
3 4
1
S C4
Con1
1
S C5
Con1
1
S C7
Con1
1
S C2 4
Con1
1
J 30
c on4 -2x2- s trip- fe ma le
1 2
3 4
S C6
Con1
1
TP 18
5001
S C2 3
Con1
1
J 36
c on6 -2x3- s trip- fe ma le
1 2
3 4
5 6
+
C6 3
47 0uF 50 0V
12
S C1
Con1
1
TP 22
5001
C6 2
0.1uF
S C2
Con1
1
S C2 1
Con1
1
+
C6 4
47 0uF 50 0V
12
S C2 2
Con1
1
J 35
c on6 -2x3- s trip- fe ma le
1 2
3 4
5 6
TP 11
50 00
R1 42
0
N.A.
NTC _S igna l
UM3174 - Rev 1 page 20/44
UM3174
Schematic diagrams