Datasheet rev 2.1
IRMD22141SS
IRMD22141SS Demo Board
For 3-phase / 380V motor drives
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IRMD22141SS Demo Board
Up to 1200V DC-bus capability
Up to 50A maximum phase current
Optional on-board phase shunt resistors
3 x IR22141SS devices connected in 3-
phase configuration
On-board bootstrap supply for high-side
gate drive
Full protection of phase-to-phase, DC-bus
and ground short circuit by monitoring IGBT
de-saturation
Fault feedback to ground level
Internal minimum dead time
Anti-shoot-through management
Undervoltage lockout
3.3V digital input/output CMOS compatible
Power Module
Standard ECONO2-6PACK IGBT module
compatible
IGBT short circuit rated up to 1200V/50A.
Easy to mount heat-sink
IR22141SS Demo Board
(Shown with optional IGBT Power Module)
The IRMD22141SS demo board is an evaluation board for IR22141SS gate driver. With three connected
IR22141SS (see the device datasheet), IRMD22141SS is designed to drive 3-phase power modules with
pin-out compatible to ECONO2-6PACK. The board can drive AC or Brushless motors using power modules
with up to 50A output current. The board is a flexible solution for different applications and can be
customized providing place for external components. The control signals are 3.3V CMOS compatible; three-
phase shunt resistor (with sensing pins) can be placed for current loop control; power module short circuits
are managed synchronizing the IGBT turn off in a local network. Board layout reduces the noise coupling
between high and low voltage signals and EM emissions.
IRMD2214SS + Power Module
INTRODUCTION
Application Block Diagram
(Refer to connections section to
know the interface pins) This
diagram shows the main blocks and
connections of the demo board and
the external components necessary
in a typical motor drive application.
DCbus
AC/DC
Conveter
Low Voltage
Power Supply
IR22141SS
3-phase
half bridge
(Power
Module)
shunt
resistor
shunt
resistor
shunt
resistor
IR22141SS
Motor
System
Control
IR22141SS
3-phase
Current Sensor
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Datasheet rev 2.1
IRMD22141SS
Table of contents
INTRODUCTION .........................................................................................................................................1
Table of contents......................................................................................................................................2
Table of figures ........................................................................................................................................2
The IR22141SS........................................................................................................................................3
The power module ...................................................................................................................................3
Important Notice.......................................................................................................................................3
BOARD CONNECTORS .............................................................................................................................4
Connection with the system controller .....................................................................................................4
FAULT/SD logic signal .............................................................................................................................5
VCC supply pin ........................................................................................................................................5
VSS ground pin (GND).............................................................................................................................5
Connecting the current sensors ...............................................................................................................5
High power signal connector....................................................................................................................6
Connecting the power module .................................................................................................................6
Test Points ...............................................................................................................................................7
TEST BENCH CONNECTION ....................................................................................................................7
OPERATING DESCRIPTION......................................................................................................................8
Power on sequence .................................................................................................................................8
Normal operating mode............................................................................................................................8
Fault management ...................................................................................................................................8
Multilevel board solution...........................................................................................................................9
BOARD SOLUTIONS................................................................................................................................10
Bootstrap circuit .....................................................................................................................................10
Gate resistances ....................................................................................................................................10
OTHER EXTRA COMPONENTS ..............................................................................................................11
Desat circuit ...........................................................................................................................................11
Clamping Diode for Vs below ground ....................................................................................................11
RC filter on com pin................................................................................................................................12
Fast diode between gate and supply pin ...............................................................................................13
Zener diode to preserve the IGBT gate .................................................................................................13
Optional output shunt resistor ................................................................................................................14
Resistor on v
cc
........................................................................................................................................14
BILL OF MATERIAL .................................................................................................................................15
SCHEMATIC .............................................................................................................................................16
LAYOUT ....................................................................................................................................................16
LAYOUT ....................................................................................................................................................17
Table of figures
Figure 1: TOP image of board .....................................................................................................................4
Figure 2: LED connection ............................................................................................................................5
Figure 3: Test bench connection .................................................................................................................7
Figure 4: Power on sequence......................................................................................................................8
Figure 5: Three phase connection...............................................................................................................9
Figure 6: Example of a desaturation detection event ..................................................................................9
Figure 7: Bootstrap circuit..........................................................................................................................10
Figure 8: Desat external filter ....................................................................................................................11
Figure 9: -V
s
clamp ....................................................................................................................................12
Figure 10: COM below ground protection..................................................................................................12
Figure 11: Collector-Gate current protection .............................................................................................13
Figure 12: Zener clamp for IGBT gate.......................................................................................................13
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Datasheet rev 2.1
IRMD22141SS
Parameters
Values
Description, condition
DCBus voltage positive
with 1200V power module
DCbus voltage negative
Low voltage power supply.
Follow IR22141 datasheet
for supply setting
Low voltage ground
quiescent Vcc current
max phase dc output
current
see “
Board Connectors
”
section on page 4
Input Power
DC+
DC-
Vcc
Vss
Icc
Output Power
Ilmax
Control Inputs/Outputs
40 pin connector J1 I/Os
3.3V to 15V compatible
50A @25C
0 to 1200V
ground
15V typ
ground
100 mA
The IR22141SS is a half bridge gate driver suited for power switching applications. The high side driver
can float up to 1200V. The IR22141SS have a high gate driving capability (2A source and 3A sink) with
a low quiescent current. The device is designed to manage all the half-bridge faults by turning off
smoothly the desaturated transistor through the dedicated soft shut down pin preventing over-voltages
and reducing EM emissions. In a multi-phase system the drivers communicate using a dedicated local
network (SY_FLT and FAULT/SD signals) to properly manage phase-to-phase short circuits. The
system controller may force shutdown or read device fault state through the 3.3 V compatible CMOS I/O
pin (FAULT/SD). To improve the signal immunity from DC-bus noise, the control and power ground use
dedicated pins enabling low-side emitter current sensing as well. Undervoltage conditions in floating and
low voltage circuits are managed independently.
For further technical information see the IR2214/IR22141 datasheet at http://www.irf.com.
IRMD22141SS demo board is ECONO2 compatible with
SixPack™ standard pin out.
The IR22141SS
The power module
mentioned power module.
It is strongly recommended to customize the demo board to fit the application requirements for the
power module that has been chosen.
Suggestions on passive sizing are also present in “Design Tips: Using monolithic high voltage gate
drivers”.
IRMD22141SS demo board is supplied with a Bill Of Material
suitable for a 1200V/50A@100C power module. The BOM
presented on page 15 provides a suggestion for the above
Important Notice
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Datasheet rev 2.1
IRMD22141SS
BOARD CONNECTORS
P1
P2
P3
J1
Figure 1: TOP image of board
On board there is a 40 pins connector for the control signals. The driver board uses only 17 pins. The
remaining pins are for the sensing board (IRCS2277S) that can be connected on top of IRMD22141SS
board.
CONNECTOR J1
HIN1
LIN1
HIN2
LIN2
HIN3
LIN3
FLT_CLR
FAULT/SD
VCC
VSS
1
2
12
13
24
25
3
5/6
37 - 40
17 - 20
Table 1: 40-pin connector J1
Input logical signals HIN1, LIN1, HIN2, LIN2, HIN3, LIN3 and FLT_CLR:
These logic inputs are 3.3 V compatible CMOS I/O port. The logic signals are active high with internal
pull-down resistor of 10 kOhm. When both HIN and LIN of the same phase are active at the same time
an internal anti-shot trough circuit turns off the output drivers. HIN turns on the high side IGBT while LIN
the low side.
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1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
Connection with the system controller
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Datasheet rev 2.1
IRMD22141SS
FLT_CLR is active high and it is used to reset the fault state of all devices (see also the Fault
management section and the IR22141SS datasheet).
This is an input/output logic signal, 3.3 V compatible CMOS I/O port. The logic signal is active low, tied
to connector VCC with a 10 k pull-up resistor. As an input, the signal shuts down (SD) all the drivers;
as an output, it reports the power module fault (IGBT desaturation detection) or the VCC undervoltage
(see also IR22141SS datasheet for more information).
On board a red LED (DL2) indicates when the signal is active; Figure 2a shows the connection.
This is the supply pin for all the devices. On board a green LED (DL1) indicates the supply power on;
Figure 2b shows the connection.
V
CC
15k
V
CC
15k
FAULT/SD logic signal
VCC supply pin
Red
FAULT/SD
(a)
GND
(b)
Green
Figure 2: LED connection
The board ground is connected to the power module DC- pin. The VSS pin of the connector and the
devices ground pin are star-connected to the DC- pin. DC- star connection has been chosen to reduce
the noise coupled from the floating signals.
VSS ground pin (GND)
Connecting the current sensors
P1, P2 and P3 are connected with the optional shunt resistors placed on the phase output nodes.
CONNECTOR P1
SHU+
(motor side)
SHU-
(power module side)
U
SHV+
(motor side)
SHV-
(power module side)
V
SHW+
(motor side)
SHW-
(power module side)
W
1
2
3
CONNECTOR P2
1
2
3
CONNECTOR P3
1
1
1
2
3
1
2
3
2
3
2
3
Table 2: P1, P2 and P3 connectors for kelvin contacts to shunt signals
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