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PDF IRMD22141SS Data sheet ( Hoja de datos )
| Número de pieza | IRMD22141SS | |
| Descripción | Demo Board | |
| Fabricantes | International Rectifier | |
| Logotipo |  |
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Datasheet rev 2.1
IRMD22141SS
IRMD22141SS Demo Board
For 3-phase / 380V motor drives
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)
INTRODUCTION
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.
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
System
Control
IRMD2214SS + Power Module
IR22141SS
IR22141SS
IR22141SS
3-phase
half bridge
(Power
Module)
shunt
resistor
shunt
resistor
shunt
resistor
Motor
3-phase
Current Sensor
www.irf.com
page 1/22
Sep 9th, 2004
1 page  
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).
FAULT/SD logic signal
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.
VCC supply pin
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.
VCC
15k
Red
VCC
15k
Green
FAULT/SD
(a)
GND
(b)
Figure 2: LED connection
VSS ground pin (GND)
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.
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)
1
SHU-
(power module side)
2
U3
1
2
3
CONNECTOR P2
SHV+
(motor side)
1
SHV-
(power module side)
2
V3
1
2
3
CONNECTOR P3
SHW+
(motor side)
1
SHW-
(power module side)
2
W3
1
2
3
Table 2: P1, P2 and P3 connectors for kelvin contacts to shunt signals
www.irf.com
page 5/22
Sep 9th, 2004
5 Page 
Datasheet rev 2.1
IRMD22141SS
OTHER EXTRA COMPONENTS
These components are provided to make IRMD22141SS board as customizable as possible. In many
cases the extra components are not required.
Desat circuit
The IR22141S is able to detect the IGBT desaturation. To reject the noise on the desat pins the
IR22141SS have an internal filter of 1 sec. If this is not enough an RC filter has been placed on board
(see figure 8, RDSH, CDSH and RDSL, CDSL).
High side
desat diode
DC+
15V
VCC
CVCC
VSS
VB
DSH
VS
Vcc
DSL
COM
RDSH
CDSH
RDSL
CDSL
VGH
VEH
Low side
desat diode
phase
VGL
VEL
Figure 8: Desat external filter
The external resistor is in parallel with the internal bias circuit of the desat diode. If added, the external
resistor may cause an higher diode bias current that must be taken into account in bootstrap capacitor
sizing.
External RC filter delays desaturation detection, that causes a delay in turning the IGBT off. Consider
this delay when sizing the soft-shut-down resistors.
The following table shows the names of these components on board.
CDSH
RDSH
CDSL
RDSL
U
C7
R16
C4
R8
V
C13
R28
C10
R21
W
C19
R40
C16
R33
Clamping Diode for Vs below ground
This solution preserves the device when the VS pin goes below ground out of the device absolute
maximum ratings. The VS voltage is clamped to the maximum value allowed by a zener diode.
www.irf.com
page 11/22
Sep 9th, 2004
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet IRMD22141SS.PDF ] | |
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