ST STEVAL-IPMM10B Manual de usuario

Introduction

The STEVAL-IPMM10B is a compact motor drive power board equipped with SLLIMM™ (small low-loss intelligent molded

module) 2nd series based on n-channel power MOSFET MDmesh™ DM2 fast-recovery diode (STIB1060DM2T-L). It provides

an affordable and easy-to-use solution for driving high power motors for a wide range of applications such as power white

goods, air conditioning, compressors, power fans, high-end power tools and 3-phase inverters for motor drives in general. The

IPM itself consists of MOSFETs and a wide range of features like undervoltage lockout, smart shutdown, embedded

temperature sensor and NTC, and overcurrent protection.

The main characteristics of this evaluation board are small size, minimal BOM and high efficiency. It consists of an interface

circuit (BUS and VCC connectors), bootstrap capacitors, snubber capacitor, hardware short-circuit protection, fault event and

temperature monitoring. In order to increase the flexibility, it is designed to work in single- or three-shunt configuration and with

double current sensing options such as using three dedicated onboard op-amps, or op-amps embedded in the MCU. The Hall/

Encoder part completes the circuit.

Thanks to these advanced characteristics, the system has been specifically designed to achieve fast and accurate current

feedback conditioning, satisfying the typical requirements for field-oriented control (FOC).

The STEVAL-IPMM10B is compatible with ST's STM32-based control board, enabling designers to build a complete platform for

motor control.

Figure 1. SLLIMM 2nd series motor control internal demo

board (top view)

Figure 2. SLLIMM 2nd series motor control internal demo

board (bottom view)

1200 W motor control power board based on STIB1060DM2T-L SLLIMM™ 2nd

series MOSFET IPM

UM2702

User manual

UM2702 - Rev 1 - April 2020

For further information contact your local STMicroelectronics sales office.

www.st.com

1Key features

• Input voltage: 125 - 400 VDC

•Nominal power: up to 1200 W

– Allowable maximum power is related to the application conditions and cooling system

• Nominal current: up to 4.2 Arms

• Input auxiliary voltage: up to 20 V DC

• Single- or three-shunt resistors for current sensing (with sensing network)

• Two options for current sensing: dedicated op-amps or through MCU

• Overcurrent hardware protection

• IPM temperature monitoring and protection

• Hall sensor or encoder input

• MOSFET intelligent power module:

– SLLIMM™ 2nd series IPM (STIB1060DM2T-L - DBC package)

• Motor control connector (32-pin) to interface with ST MCU boards

• Universal conception for further evaluation with breadboard and testing pins

• Very compact size

• WEEE compliant

• RoHS compliant

UM2702

Features

UM2702 - Rev 1 page 2/34

2Circuit schematics

The full schematics for the SLLIMM™ 2nd series card for STIB1060DM2T-L IPM products is shown below. This

card consists of an interface circuit (BUS and VCC connectors), bootstrap capacitors, snubber capacitor,

shortcircuit protection, fault output circuit, temperature monitoring, single-/three-shunt resistors and filters for input

signals. It also includes bypass capacitors for VCC and bootstrap capacitors. The capacitors are located very

close to the drive IC to avoid malfunction due to noise.

Dual current sensing options are provided: three dedicated on-board op-amps or embedded MCU op-amps;

selection is performed through three jumpers.

The Hall/Encoder section (powered at 5 V or 3.3 V) completes the circuit.

UM2702

Circuit schematics

UM2702 - Rev 1 page 3/34

2.1 Schematic diagrams

Figure 3. STEVAL-IPMM10B board schematic (1 of 5)

Input

DC_ bus _vo lta ge

STEVAL-IPMlnmx decoder

3.3V

+Bus 3.3V

1.65V

Bus _vo lta ge

RC6

RC2

RC12

BAT48J FILM

RC1

47u/35V

RC13

INPUT-dc

RC10

RC7

470K

R3 120R

470K

1k0

U1D

TSV994

411

RC3

RC8

RC4

47u/35V

7k5

10n

RC5

RC9

RC11

1000u/400V

1k0

UM2702 - Rev 1 page 4/34

UM2702

Schematic diagrams

Figure 4. STEVAL-IPMM10B board schematic (2 of 5)

pha s e _A

pha s e _B

pha s e _C

3.3V

+5V

EM_S TOP

PWM-A-H

PWM-A-L

PWM-B-H

PWM-B-L

PWM-C-H

PWM-C-L

NTC_ byp a s s _re la y

P WM_Vre f

M_ pha s e _ A

M_ pha s e _ B

Bus _volta ge

M_ pha s e _ C

TS O

NTC

Curre nt_B_ a mp

Curre nt_C_a mp

Curre nt_A_a mp

Motor Output

SW2

SW4

SW3

Control Conne ctor

1 2

3 4

5 6

7 8

9 10

11 12

13 14

15 16

25 26

27 28

29 30

31 32

33 34

SW1

Curre nt_A

Curre nt_B

Curre nt_C

UM2702 - Rev 1 page 5/34

UM2702

Schematic diagrams

Figure 5. STEVAL-IPMM10B board schematic (3 of 5)

Phase A - input

Phase B - input

Phase C - input

IPM module

1_SHUNT 1_SHUNT

3_SHUNT

3.3V

+Bus

pha s e _A

pha s e _B

pha s e _C

3.3V

TS O

NTC

PWM-A-L

PWM-A-H

PWM-B-L

PWM-B-H

PWM-C-L

PWM-C-H

EM_S TOP

TP 16

SW6

STIB1060DM2T-L

NW 18

VBOOTw

VBOOTv

LINv

GNDa

LINu

LINw

GNDb

VCCL

CIN

VBOOTu

HINu

HINv

HINw

VCCH

NV 19

NU 20

W21

V22

U23

P24

T2 25

T1 26

TSO

TP 2

R10

12k

R27

0.08

R11

3k3

R8 1k0

R22

3k3

R16

3k3

SW5

100n

TP 6

C14

10p

TP 18

3k9

TP 13

R23 1k0

TP 8

R17

3k9

R13

3k9

C20

330p

C15

10p

TP 20

TP 5

LED Re d

R19 1k0

R28

10k

C19

C17

10p

R9 1k0

R20 1k0

TP 22

BAT48J FILM

TP 23

R15 1k0

C11

10p

C18

10p

2.2u

C12

4.7u 50V

SW7

TP 7

R25

0.08

0,1 uF - 4 00V

R53

4.7k

BAT48J FILM

TP 3

TP 1

TP 14

TP 19

TP 21

C13

100n

BAT48J FILM

R12

5k6

C10

10p

2.2u

SW8

TP 4

TP 17

TP 10

R26

0.08

15V

TP 15

BAT48J FILM

TP 12

C16

1nF

R14 1k0

2.2u

TP 11

TP 9

UM2702 - Rev 1 page 6/34

UM2702

Schematic diagrams

Figure 6. STEVAL-IPMM10B board schematic (4 of 5)

3.3V

1.65V

3.3V

1.65V

3.3V

Curre nt_A_a mp

Curre nt_B_a mp

Curre nt_C_a mp

R30 1k0

R29

2k1

U1A

TSV994

411

TP 24

R31

R43

2k1

C30

100p

R37 1k0

C29

330p

R41

C24

100p

C28

10n

C25

330p

TP 25

U1B

TSV994

411

R35 1k0

C23

100n

C22

10n

R34

2k1

R33

2k1

R42 1k0

C31

330p

TP 26

R32 1k0

R39

2k1

C21

4.7u 50V

C27

100p

U1C

TSV994

411

R40 1k0

R38

2k1

C26

10n

R36

UM2702 - Rev 1 page 7/34

UM2702

Schematic diagrams

Figure 7. STEVAL-IPMM10B board schematic (5 of 5)

H3/Z+

H2/B+

H1/A+

GND

+ 3.3/5V

Hall/Encoder

M_pha s e _A

M_pha s e _C

M_pha s e _B

3.3V

+5V

3.3V

+5V

R52

4k7

R49 2k4

J 5

Encode r/Hall

S W12

S W13

C37

10p

C34

100n

S W10

R50

4k7

S W14

S W9

R44

4k7

R51

4k7

R45

4k7

C33

100n

C35

10p

R47 2k4

R48 2k4

C32

100n

S W16

S W15

R46

4k7

S W11

C36

10p

UM2702 - Rev 1 page 8/34

UM2702

Schematic diagrams

3Main characteristics

The board is designed to be compatible with DC supply from 125 VDC up to 400 VDC voltage.

A bulk capacitor according to the power level of the application must be mounted. The footprint is already

provided on the board.

The SLLIMM integrates six MOSFET switches with high voltage gate drivers. Thanks to this integrated module,

the system is specifically designed to achieve power inversion in a reliable and compact design. Such integration

reduces the required PCB area and the simplicity of the design increases reliability.

In order to increase the flexibility, it can operate in single- or three-shunt configuration by modifying solder bridge

jumper settings (see Section 4.3.5 Single- or three-shunt selection).

Figure 8. STEVAL-IPMM10B architecture

UM2702

Main characteristics

UM2702 - Rev 1 page 9/34

4Filters and key parameters

4.1 Input signals

The input signals (LINx and HINx), able to drive the internal MOSFETs, are active high. A 100 kΩ (typ.) pull-down

resistor is built-in for each input signal. In order to prevent input signal oscillation, an RC filter was added on each

input and placed as close as possible to the IPM. The filter is designed using a time constant of 10 ns (1 kΩ and

10 pF).

4.2 Bootstrap capacitor

In the 3-phase inverter, the emitters of the low side MOSFETs are connected to the negative DC bus (VDC-) as

common reference ground, which allows all low side gate drivers to share the same power supply, while the

emitter of high side MOSFETs is alternately connected to the positive (VDC+) and negative (VDC-) DC bus during

running conditions.

A bootstrap method is a simple and cheap solution to supply the high voltage section. This function is normally

accomplished by a high voltage fast recovery diode. The SLLIMM 2nd series family includes a patented

integrated structure that replaces the external diode. It is realized with a high voltage DMOS functioning as diode

with series resistor. An internal charge pump provides the DMOS driving voltage. The value of the CBOOT

capacitor should be calculated according to the application condition.

This curve is taken from application note AN4768 (available on www.st.com); calculations are based on the

STGIB15CH60TS-L device, which represents the worst case scenario for this kind of calculation.

Figure Figure 9. CBOOT graph selectiongraph selection shows the behavior of CBOOT (calculated) versus

switching frequency (fsw), with different values of ΔVCBOOT for a continuous sinusoidal modulation and a duty

cycle δ = 50%.

The boot capacitor must be two or three times larger than the CBOOT calculated in the graph. For this design, a

value of 2.2 μF was selected.

Figure 9. CBOOT graph selection

4.3 Overcurrent protection

The SLLIMM 2nd series integrates a comparator for fault sensing purposes. The comparator has an internal

voltage reference VREF (510 mV typ.) connected to the inverting input, while the non-inverting input available on

the CIN pin can be connected to an external shunt resistor to implement the overcurrent protection function.

When the comparator triggers, the device enters the shutdown state.

The comparator output is connected to the SD pin in order to send the fault message to the MCU.

UM2702

Filters and key parameters

UM2702 - Rev 1 page 10/34

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