IXYS Digital Power
10 A/4000 V ISOLATED INTEGRATED DRIVER MODULE
IXIDM1401_M
Datasheet
Part Number Options
IXIDM1401_1505_M – two isolated gate drivers with 10 A gate current, 15 V positive and –5 V negative
gate voltage, molded version.
IXIDM1401_1515_M – two isolated gate drivers with 10 A gate current, 15 V positive and -15 V negative
gate voltage, molded version.
Abstract
The IXIDM1401_M driver module combines supreme compactness with the highest performance and
reliability. It comprises a dual-channel driver core that targets medium power dual-channel IGBTs for up to
4 kV and applications such as inverters, drives & automation, UPS, renewable energy, transportation, and
medical. Its parallel capability allows for an easy, high power system design. It supports switching up to
250 kHz, short-circuit protection, advanced active clamping, and supply-voltage monitoring.
The IXIDM1401_M driver core is equipped with the IX6610/6611 chipset of application-specific integrated
circuits that covers the main range of functions required to design intelligent gate drivers. IXIDM1401_M is
available in a 50x50x25 mm package.
Figure 1. Top and Bottom Views of IXIDM1401_M
© 2017 IXYS Corp.
Characteristics subject to change without notice
1
IXIDM1401_M_DS, Rev. No. 02
IXIDM1401_M
Table of Contents
Part Number Options ..................................................................................................................................................................... 1
Abstract .......................................................................................................................................................................................... 1
Features .......................................................................................................................................................................................... 3
Applications ................................................................................................................................................................................... 3
Description ..................................................................................................................................................................................... 3
Typical Application Circuits .......................................................................................................................................................... 4
Absolute Maximum Ratings .......................................................................................................................................................... 6
Electrical Operating Characteristics ............................................................................................................................................... 7
Pin Configuration ........................................................................................................................................................................... 9
Pin Assignment .............................................................................................................................................................................. 9
Block Diagram ............................................................................................................................................................................. 10
Basic Operation ............................................................................................................................................................................ 10
Interface ................................................................................................................................................................................... 11
Power Block ............................................................................................................................................................................. 12
Gate Driver ............................................................................................................................................................................... 13
Active Clamping Protection ..................................................................................................................................................... 13
Over-Current Protection ........................................................................................................................................................... 13
Secondary Side Under-/Over-voltage Protection ..................................................................................................................... 14
Layout and Use Considerations ................................................................................................................................................... 14
Typical Performance Characteristics ........................................................................................................................................... 15
Ordering Information ................................................................................................................................................................... 17
Package Drawing and Dimensions ............................................................................................................................................... 17
Marking ........................................................................................................................................................................................ 18
© 2017 IXYS Corp.
Characteristics subject to change without notice
2
IXIDM1401_M_DS, Rev. No. 02
IXIDM1401_M
10 A/4000 V Isolated Integrated Driver Module
Features
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Description
Two isolated gate drivers for half bridge
switching modules
Internal power supply for isolated drivers with up
to 2 W output power per channel
Non-overlap operation of high side and low side
drivers
TTL logic level microcontroller interface
A High Voltage Isolated Module (IXIDM1401_M) is
developed and optimized for electronic motor control
applications such as air conditioners, washing
machines, refrigerators, and high power buck
converters or inverters. It is a compact, high
performance device in a single isolated package with
a very simple design.
Single 15 V power supply operation
+15 V/-5 V isolated gate driver output voltage to
drive IGBTs with up to 10 A pulse current
Minimum input pulse width 500 ns
Input to output gate driver signal propagation
delay 100 ns
Gate drive pulse width distortion 20 ns
Under- and over-voltage lockout protection
Up to 50 mA 3.3 V load capability output to drive
an external MCU
FAULT signals Informing MCU about overvoltage, under-voltage, and over-current
conditions at isolated gate drivers
Latched FAULT signals from gate drivers to let
MCU read fault information asynchronously
0
0
Operating ambient temperature: –40 C～+105 C
Driver and internal power supply over0
temperature protection with 150 C threshold and
0
25 C hysteresis
Environmentally friendly: EU RoHS compliant,
Pb-free
Based on the IX6610/11 chip set, this device enables
a 3.3 V microcontroller unit (MCU) to operate halfbridge-connected IGBTs through a 4 kV isolation
barrier providing PWM pulses as short as 500 ns, and
no lower limit on switching frequency.
Internal power supply provides up to 2 W per channel
of isolated power to drive upper and lower IGBTs,
effectively isolating the MCU from high power
circuitry. Operating from a single polarity 15 V power
source, this device provides +15 V/-5 V to operate
IGBT gates and +3.3 V at 50 mA to power the MCU
from the same source.
Built-in under-voltage and over-voltage protection
prevents the IGBT from operating at gate voltages
outside the optimal window and informs the MCU
about such conditions irrespective of the source of
the problem, which may be on either the low or high
side IGBT behind the isolation barrier or on the
primary side before the isolation barrier.
Over-current protection with 300 mV threshold may
utilize either the current sense resistor or IGBT desaturation event. Over-current protection turns the
IGBT off immediately after the collector current
exceeds the value set by the customer, informing the
MCU about every such event to make appropriate
decisions.
Applications
AC and DC motor drives for EV and industrial
Inverters for solar and wind power
Converters for medical, lighting, and transport
UPS, SMPD, and industrial battery chargers
Paralleled operation of IGBTs
Induction heating and traction
Designed for phase-leg IGBT modules
Designed for phase-leg SiC MOSFET modules
An active clamping comparator with a 3 V threshold
with respect to negative IGBTs’ gate voltage source
disables the driver in case the collector voltage
exceeds the level set by the customer, preventing
from excessive power dissipation on IGBTs.
Built-in dead time delay circuitry prevents turning on
of both IGBTs simultaneously with channel A priority.
If channel B is active and channel A is forced into the
ON state, channel B becomes disabled immediately
and the channel A IGBT turns on with a delay time of
~0.4 µs. After channel A becomes inactive, channel
B, if active, turns on with the same delay time. If
Up to 600 A/600 V
Up to 600 A/900 V
Up to 600 A/1200 V
Up to 450 A/1700 V
© 2017 IXYS Corp.
Characteristics subject to change without notice
3
IXIDM1401_M_DS, Rev. No. 02
IXIDM1401_M
channel A is active and channel B is forced into the
ON state, this command will be ignored as long as
channel A remains active. If channel A becomes
inactive before the command activating channel B
expires, channel B becomes active with a delay time
of ~400 ns after channel A becomes inactive.
If IGBT assembly is equipped with a temperature
sensor, IXIDM1401_M is able to translate its signal to
the MCU for monitoring.
The IXIDM1401_M device is available in a
50x50x27 mm package with a 12-pin 1 mm pitch FFC
connector to communicate with the MCU, two 5-pin
2.54 mm pitch headers to provide signals to/from
IGBTs and one 2-pin 2.54 mm pitch header to
translate the signal from the IGBT’s assembly
temperature sensor.
Over-temperature protection disables IGBTs if the
temperature of any of the internal chips exceeds
150°C and resumes normal operations when the
temperature falls below 125°C.
Typical Application Circuits
Figure 2. Typical Application Circuit with Half-bridge IGBT Module and De-saturation Over-current
Protection
Figure 2 shows a standard connection for IXIDM1401_M with an MCU and a phase-leg IGBT module. 10 primaryside pins (out of a total of 12 pins) are directly connected with the MCU. The secondary side has 5 pins for each
IGBT connection.
© 2017 IXYS Corp.
Characteristics subject to change without notice
4
IXIDM1401_M_DS, Rev. No. 02
IXIDM1401_M
Figure 3. Typical Application Circuit with Half-bridge IGBT Module and Over-current Protection Utilizing
Current Sense Resistors
Figure 3 shows a standard connection for IXIDM1401_M with an MCU and a phase-leg IGBT module. 10 primaryside pins (out of a total of 12 pins) are directly connected with the MCU. The secondary side has 5 pins for each
IGBT connection.
Figure 4. Typical Application Circuit with Push-pull Converter and Active Clamping Protection
© 2017 IXYS Corp.
Characteristics subject to change without notice
5
IXIDM1401_M_DS, Rev. No. 02
IXIDM1401_M
Figure 4 hows a standard connection for IXIDM1401_M with an MCU and a phase-leg IGBT module. 10 primaryside pins (out of a total of 12 pins) are directly connected with the MCU. The secondary side has 5 pins for each
IGBT connection.
Absolute Maximum Ratings
SYMBOL
RATINGS
UNITS
Supply Voltage (+15 V)
PARAMETER
VSUPM
– 0.3 ~ +18
V
MCU Supply Voltage (+3.3 V output)
Logic Pin Voltages (INA, INB,
FLT_RESET, RESTART, MODE,
FAULT1, FAULT2)
ACL pin Voltage1)
VMCUM
– 0.3 ~ +6
V
VLG
– 0.3 ~ +6
V
VACL
VEE – 0.3 ~ VEE + 6
V
VICM
– 0.3 ~+6)
V
VG
VEE– 0.3 ~ +28
TOPR
– 40 ~ + 105
0
– 55 ~ +125
0
ICM Pin Voltage1)
GATE Pin Voltage1)
Operating Temperature Range
Storage Temperature Range
TSTG
V
C
C
Note:
1) With respect to the COM Pin of the particular driver
© 2017 IXYS Corp.
Characteristics subject to change without notice
6
IXIDM1401_M_DS, Rev. No. 02
IXIDM1401_M
Electrical Operating Characteristics
Unless otherwise specified, Ta = 25 0C
PARAMETER
SYMBOL
Normal Operating Power Supply Voltage Range
VSUP
14.0
Under-voltage Lockout Threshold
UVLOTR
10
Under-voltage Lockout Hysteresis
UVLOHYS
Over-voltage Lockout Threshold
OVLOTR
Over-voltage Lockout Hysteresis
OVLOHYS
Power Supply Current
ISUP
MCU Supply Voltage (+3.3 V output)
MCU Supply Voltage Load Regulation
VMCU
VMCU_LR
CONDITIONS
MIN.
TYP.
11
Logic Inputs Leakage Current
16,5
Logic Inputs Pull-down Resistance
Logic Inputs Leakage Current
Logic Inputs High Level
VLGH
Logic Inputs Low Level
12
V
17,25
V
18
3.0
3.3
IMCU = 1 mA to 50 mA
VFLT_RESET = 0 or VFLT_RESET= 3.3 V
CLK, RESTART, INA, INB, MODE,
FLT_RESET
CLK, RESTART, INA, INB, MODE,
FLT_RESET
V
50
mV
100
mA
1
µA
Ω
-1
kΩ
25
-1
1
2.0
Logic Inputs INA, INB Frequency
FINA, FINB
0
Logic Inputs INA, INB Pulse Width1)
INA, INB
350
mA
3.6
0.3
VCLK=VRESTART=VINA=VINB=VMODE =0 V
V
V
10
CLK, RESTART, INA, INB, MODE
IFLT_RESET
V
0.5
VINA=VINB=VMODE = 0 V, VFLT_RST= VRESTART
=VCLK=VFAULT1=VFAULT2 =V+3.3V=OPEN
COUT = 22 µF
COUT_ESR
IINLKG
UNIT
16.0
0.5
MCU Supply Short Circuit Current
MCU Supply Bypass Capacitance ESR
MAX.
µA
V
0.8
V
250
kHz
ns
INA vs. INB Pulse Width Distortion
tDST
20
ns
Logic Inputs INA, INB Dead Time
tDEAD
400
ns
RESTART Pulse Width
tRESET
FLT_RESET Pulse Width
200
tFLT_RESET
External Clock
FCLK
External Clock Duty Cycle
DCLK
External Clock Watchdog Timeout
TDOG
FAULT1, FAULT2 Output High Voltage
FAULT1, FAULT2 Output Low Voltage
200
Input From MCU
180
ns
200
10
Information parameter only
VFLTH
IOUT = 10 mA
VFLTL
IOUT = 10 mA
220
kHz
50
%
40
µs
VMCU0.20
V
0.20
ICM Comparator Threshold2)
VICM_TR
240
ICM Comparator Blanking Time3)
TICM_BL
2
ICM Comparator Response Time
TICM_R
ICM Comparator Input Series Resistor
ns
300
V
360
3.5
5
150
250
µs
ns
2
3
kΩ
RICM
1
ACL Comparator Threshold4)
VACL_TR
2.7
3
3.3
V
ACL Comparator Response Time
ACL Comparator to Driver Output Tri-state
Delay Time5)
ACL Comparator Input Pull-down Resistance
TACL_R
70
100
ns
TACL_TR
150
250
ns
IGBT Driver
Output Voltage
RACL
1
kΩ
High Level
VGH
15
V
Low Level
VGL
-5
V
IG
±10
A
TDPR
200
ns
TDPR
20
ns
IGBT Driver Output Peak Sink/Source Current
IGBT Driver Propagation Delay
6)
IGBT Driver Propagation Delay Time Mismatch6)
Isolation Voltage Between Ground Pin and COM
A Pin
Isolation Voltage Between Ground Pin and COM
B Pin
Isolation Voltage Between COM A Pin and COM
B Pin
© 2017 IXYS Corp.
Characteristics subject to change without notice
VIS_GCA
4
kV
VIS_GCB
4
kV
VIS_CACB
4
kV
7
IXIDM1401_M_DS, Rev. No. 02
IXIDM1401_M
Notes:
1. INA signal overrides INB and INB is reduced by tINDEAD when INA overlaps INB
2. With respect to the COM pin
3. Time from IGBT driver turn-on to turn-off measured with ICM terminal set at 500 mV with respect to the COM pin
4. With respect to the VEE pin of the appropriate driver
5. Delay time is measured from the ACL terminal input overdriven above the threshold to the IGBT driver output response. The driver’s output
tied to the COM pin by 50 ohm resistor.
6. Measured as delay time between INA and INB activated/deactivated to respective response by the IGBT driver.
© 2017 IXYS Corp.
Characteristics subject to change without notice
8
IXIDM1401_M_DS, Rev. No. 02
IXIDM1401_M
Pin Configuration
(Bottom View; Not to Scale)
Pin Assignment
1
PIN NAME
+15 V
2
+3.3 V
3
MODE
4
FLT_RESET
5
RESTART
6
CLK
7
8
9
FAULT1
FAULT2
GROUND
10
INB
11
INA
CONNECTOR PIN NUMBER
J1
J2
J3
J4
12
TS
1
GATE A
2
COM
3
ICM
4
ACL
5
1
VEE
GATE B
2
COM
3
ICM
4
ACL
5
VEE
1
TS
2
GND
© 2017 IXYS Corp.
Characteristics subject to change without notice
FUNCTIONS
Supply voltage. Connect positive terminal of the +15 V supply source
Output voltage to drive external MCU. It can be disabled by MODE pin set at logic high level,
if MCU is powered from other than module source. In this case, the same external source
should be used to drive IXIDM1401_M internal logic.
MODE = 0 V or left open activates internal +3.3 V voltage source. MODE pin set above +2.5
V disables internal source and an external source connected to +3.3 V pin will be used to
operate internal logic1).
Positive logic pulse at this pin resets flip-flops holding information about FAULT1 and
FAULT2 conditions
Positive logic pulse at this input restarts module
Logic input to provide external clock in case synchronization between internal power supplies
of different modules required. If no external clock is applied, internal clock will be used
FAULT1 signal logic output
FAULT1 signal logic output
Ground terminal for all power supplies and logic signals
Channel B gate driver logic input. If INB =1 and INA is active, complimentary pulses will be
generated at GATE B output with a dead time ~400 ns.
Channel A gate driver logic input
Terminal to translate thermo sensor information from IGBT module to MCU. It is a direct
connect to pin #1 of the connector J4
Gate driver A output. Connect to the gate of the IGBT A
Common terminal of the Gate driver A, Connect to IGBT A emitter or low potential terminal of
the current sense resistor
Over-current comparator’s input. Connect to the high potential terminal of the current sense
resistor/IGBT emitter. Connect to COM pin if unused
Active clamping comparator’s input. See typical application circuit (Fig. 2) for connection
schematic. Connect to VEE pin if unused
Output of the negative power supply for the gate driver A
Gate driver A output. Connect to the gate of the IGBT B
Common terminal of the Gate driver B, Connect to IGBT B emitter or low potential terminal of
the current sense resistor
Over-current comparator’s input. Connect to the high potential terminal of the current sense
resistor/IGBT emitter. Connect to COM pin if unused
Active clamping comparator’s input. See typical application circuit (Fig. 2) for connection
schematic. Connect to VEE pin if unused
Output of the negative power supply for the gate driver B
Terminal to translate thermo sensor information from IGBT module to MCU. Direct connect to
pin #12 of the connector J1
Ground terminal for thermo sensor connection
9
IXIDM1401_M_DS, Rev. No. 02
IXIDM1401_M
Note:
1) If external +3.3 V supply is used to drive internal IX6610 logic, the power-up sequence should be implemented. Internal +3.3 V power
supply should be active before the MODE pin is used to disable it, and only after that should the external voltage be applied to the +3.3 V
pin. Power down sequence requires external +3.3 V removed first, after which the MODE pin should be set to logic zero or left open. The
+15 V source can be then be removed from IXIDM1401_M.
Block Diagram
Figure 5. IXIDM1401_M Block Diagram
Basic Operation
The IXIDM1401_M device is based on the IX6610/IX6611 chipset, which enables the creation of an isolated IGBT
driver with a high voltage isolation barrier between the primary and secondary side and between secondary side
drivers. This creates a very flexible architecture, which can be used for 3-phase motor driver, half-bridge switches,
push-pull converters, or other applications which require isolation between the primary and secondary side and/or
between secondary side drivers.
This device contains the necessary circuit blocks to operate a bidirectional interface between the primary and
secondary side and provide the power required to drive isolated gate drivers and the MCU from a single +15 V
power source, maintaining up to 4 kV isolation between the MCU and gate drivers and also between gate drivers.
The IXIDM1401_M module implements monitoring/protection functions such as +15 V supply under-/over-voltage
lockout, under-/over-voltage lockout on secondary side, and thermal shutdown. It also provides over-current
protection on the secondary side and sends information to the MCU about such events to allow the MCU to make
appropriate decisions.
The IX6610 is located on the primary side and implements a dual-channel bidirectional transformer interface, which
transmits the primary side input commands from the MCU to the secondary side, and information from the
secondary side to the MCU. Asynchronous data transmission is implemented by narrow pulses to prevent the
© 2017 IXYS Corp.
Characteristics subject to change without notice
10
IXIDM1401_M_DS, Rev. No. 02
IXIDM1401_M
transformer’s core saturation. The IX6610 also contains all the blocks required to implement a power converter that
supplies isolated power to the secondary side IGBT drivers. The IX6610 utilizes built-in inter-lock and dead time
control.
Interface
TTL level compatible input signals INA and INB from an external MCU are used to operate secondary side drivers.
These input signals are fed through the Schmitt trigger buffers to improve noise immunity. An input signal interlock
function is implemented to prevent the simultaneous conduction of the secondary side IGBTs, with priority for the
INA signal. If the INA signal is active (logic one), the INB signal is ignored irrespective of its logic state until the INA
signal becomes logic zero and dead time expires.
This feature enables the generation of complimentary signals at Gate A and Gate B outputs using only one signal
source applied to INA input, while INB input is set to logic high. Dead time between pulses at Gate A and Gate B
outputs is hardware programmed to ~420 ns.
A narrow pulse detector is implemented in the IX6610 to prevent transmission of very narrow false PWM input
signals to the drivers due to noise coupling at the input pins. Input signal pulses with width narrower than 100 ns
are suppressed and pulses with width greater than 350 ns are transferred to the drivers.
In the half bridge driver configuration, dead time should be added to the incoming input signals, to prevent shoot
through current due to overlap of the conducting state for high and low side IGBTs. If the dead time required to
operate a particular IGBT is more than that implemented in IXIDM1401_M, it should be programmed by the MCU.
IX6610 also contains a dead time circuit that adds dead time to the input signals INA and INB after the input signal
interlock function. This dead time is used as a precaution only in the instance of a software failure and it applies if
the dead time programmed by the MCU is shorter than the dead time set by IXIDM1401_M.
To avoid limitations to a transmitted maximum pulse width, IX6610 only transmits short pulses representing
rising/falling edges of the INA (INB) signal, while IX6611 restores original INA (INB) pulse width on the secondary
side (see Figure 6).
Figure 6. PWM Signal Transmission
Legend:
Channel 1 (blue) input signal (INA/INB) from MCU
Channel 2 (magenta) and Channel 3 (green) – IX6610 outputs
Channel 4 (red) – IGBT gate pulse at IX6611 output
© 2017 IXYS Corp.
Characteristics subject to change without notice
11
IXIDM1401_M_DS, Rev. No. 02
IXIDM1401_M
The secondary side power supply faults and IGBT power stage faults are transmitted back to the IX6610 (primary
side) through a pulse transformer. IX6610 has four single-ended receiver comparators, which sense the presence
of signals that are more positive than a fixed positive threshold value. Receiver comparators are high speed
Schmitt Trigger buffers with 1 V typical hysteresis.
The truth table for FAULT signals is listed in Table 1.
Table 1. Fault Signals Truth Table
Before FAULT RESET
After FAULT RESET
FAULT1
FAULT2
Synchronized
FAULT1
FAULT2
SOURCE
SIGNAL
1
0
no
1
0
IX6610
Under-voltage
0
1
no
0
1
IX6610
Over-voltage
1
1
no
1
1
IX6610
Over-temperature
1
0
yes
0
0
IX6611
Under-voltage
0
1
yes
0
0
IX6611
Over-voltage
0
1
no
0
0
IX6611
Over-current
Fault signals generated by IX6610 are not synchronized with INA (INB) signals and cannot be reset by the MCU
applying the FAULT RESET signal. They will remain active so long as the fault condition exists. However, when the
fault condition disappears, the FAULT flag will remain active as long as the MCU does not reset it.
Fault signals generated by IX6611 representing over-voltage and under-voltage conditions are synchronized with
INA (INB) signals and are an echo of these signals, which appear at FAULT outputs immediately after an attempt to
transmit the INA (INB) signal when a fault condition on the secondary side exists. Fault flags representing these
faults can be reset by the MCU, but will appear again at the next attempt to transmit the INA (INB) signal until the
fault condition disappears. This allows the MCU to determine the source of the fault signals. The fault signal from
IX6611 representing an over-current condition is not synchronized with the INA (INB) signal; however, the fault flag
representing this condition can be reset by the MCU. It will be activated again if the over-current fault occurs at the
next PWM cycle.
All fault conditions for IX6610 stop execution of the PWM cycle at both drivers. All fault conditions for IX6611 stop
the PWM cycle at the affected driver only. Therefore, it is up to the MCU programmer to determine the next steps if
a fault condition occurs. If fault conditions appear before the start of the PWM cycle, the PWM cycle will be ignored
for the duration that fault conditions exist.
Power Block
The IXIDM1401_M power block is designed to provide up to 2 W of power to drive two IX6611 isolated gate drivers
and an external MCU from a single +15 V supply. IX6610 utilizes push-pull converter topology, which allows
multiple isolated outputs, step-up/step-down and/or inverted outputs with low output ripple. The circuit drives two
internal high current switches connected to an external center-tapped transformer providing dual isolated
secondary side positive and negative voltages for the IGBT drivers and an isolated 5 V supply to IX6610.
The power converter has a start-up mode and a run mode. In the start-up mode, the converter operates from the
internal oscillator and activates only a portion of the power switches to reduce the dynamic current
consumption/power dissipation. After start-up, the converter activates the power switches and goes into run mode.
The run mode is held off ~1.28 ms. The transmit operation is also disabled during start-up mode to minimize current
draw in the secondary. After run mode begins, it continues until a restart occurs, which returns the power converter
to start-up mode. In the run mode, the power converter operates either from an internal or external MCU clock, if it
exists. An external clock may be used to minimize noise interference between IXIDM1401_M devices in case of
multiphase applications such as motor drivers.
© 2017 IXYS Corp.
Characteristics subject to change without notice
12
IXIDM1401_M_DS, Rev. No. 02
IXIDM1401_M
The push-pull block repeats the duty cycle of the external clock that allows slight adjustment of secondary output
voltage in case of over/under-voltage by varying the duty cycle. It is not recommended to use an external clock with
DCEXT greater than 0.5.
To prevent excessive power dissipation and potential failure of the IC due to fault clock, a watchdog timer is
included. Whenever the external clock period exceeds the watchdog timeout (40 µs), the converter switches to the
internal clock. IX6610 contains an internal LDO regulator with 3.3 V output voltage to drive the MCU. The maximum
load current at 50 mA for 100 ms allows for easy MCU initialization.
If an external 3.3 V source is used to drive the MCU, the internal LDO regulator should be disabled by applying logic
level to the MODE pin to prevent competition between regulators; however, an external 3.3 V should be used in this
case to drive IX6610 internal logic circuitry. The Mode pin has an internal pull-down resistor and can be left open
with internal LDO active.
A logic high level at the RESTART pin disables the power converter, the LDO, initiates the power converter start-up
sequence, and resets the fault flags. Holding RESTART low for sufficient time will lower the LDO voltage to a level
that may initiate a POR sequence in the MCU. The RESTART pin has an internal 20 kΩ pull down resistor.
Gate Driver
The IX6611 used on the IXIDM1401_M secondary side is designed to provide gate drive for high power IGBTs,
converting the incoming PWM logic signals into a +15 V/-5 V (with respect to COMMON) bipolar gate drive signal
with a typical 10 A peak drive current capability. Separate positive and negative gate driver outputs allow optimizing
of IGBT turn on/off time without an external diode by selecting serial gate resistors of different values (See Block
Diagram, resistors R1 and R2). The internal dead time circuit eliminates the cross conduction of the source and
sink outputs.
Active Clamping Protection
Active clamping protection prevents IGBT damage if the inductive load is turned off with high inductive current. In
such instances, the IGBT collector voltage may easily exceed the breakdown limit and destroy the IGBT. One of the
ways to prevent this condition is to keep the IGBT conducting until the energy stored in the inductor is not enough
to create collector over-voltage condition. The IX6611 utilizes an ACL comparator with a 3 V threshold with respect
to negative voltage source that may be used for implementing an advanced active clamping technique, as shown in
application circuit diagram (Figure 3).
The ACL comparator monitors voltage at resistive divider R1/R2, which is connected to the IGBT collector through
clamp diodes Z1, Z2. If the IGBT collector voltage exceeds a threshold equal to VZ1 + VZ2 + VZ3 with respect to VEE
when the IGBT gate is set LOW, the current starts flowing into the OUTN gate driver output creating a voltage drop
across ZD3. The resistive divider should be chosen in such a way that the voltage drop across R2 exceeds the ACL
comparator threshold, i.e. VZD3*R2 / (R1 + R2) > 3.0 V.
Triggering the ACL comparator forces the gate driver output to a tri-state condition and the IGBT starts to turn on
due to the breakdown diode current charging the IGBT gate. Once the IGBT turns on, its collector voltage falls, the
diode recovers from breakdown, and the ACL comparator turns on the OUTN output, which forces the IGBT gate
low. This sequence may repeat several times until the energy in the external inductance is dissipated. The ACL
comparator is active only when the driver’s output OUTP is OFF.
Diode D1 protects gate driver OUTP output from draining current into the collector when it becomes less positive
than VCC.
Over-Current Protection
IX6611 contains an Over Current Comparator (OC COMP) with a 300 mV threshold with respect to the COMMON
pin. IGBT over-current protection can be implemented either by using a low value current sense resistor, an IGBT
with a secondary current sense output, or utilizing a de-saturation event (See Figures 1 and 2).
© 2017 IXYS Corp.
Characteristics subject to change without notice
13
IXIDM1401_M_DS, Rev. No. 02
IXIDM1401_M
If an IGBT over current fault occurs, the IGBT driver output is forced low for the remainder of the cycle. Normal
operation resumes at the beginning of the next PWM gate drive cycle. However, prematurely turning the IGBT off
may provoke an over-voltage condition at the IGBT collector. In this case, the ACL comparator should be used to
prevent IGBT damage.
A noise filter at the current sense input may be required due to low sense voltage. The IXIDM1401_M ICM input
has an internal 100 pF capacitor connected in parallel to the ICM; therefore, only a serial resistor can be added to
create such a filter.
An IGBT over-current fault event can occur any time during the ON time of the gate drive signal. When an overcurrent event occurs, the Output Faults Pulse Generator creates a narrow 200 ns pulse that is used by the Fault
Control Logic to communicate the fault condition to the MCU.
The OC comparator’s input is grounded during the off time of the IGBT and remains grounded for 3.5 µs
immediately after the IGBT turns on to prevent false tripping.
Traditional de-saturation protection can also be implemented using a large ratio resistive divider across the
collector to emitter (See Figure 1). Resistive divider R1/R2 has two limitations regarding its value. Voltage drop
across R2 should be above 300 mV to trigger the ICM comparator in case of the IGBT de-saturation event and it
should not exceed VCC voltage, when IGBT is in OFF state. If it is physically impossible, a Zener diode should be
used to prevent ICM comparator damage as shown in Figure 1, Z1.
Secondary Side Under-/Over-voltage Protection
IX6611 contains Under- and Over-voltage Lockout Comparators (UVLO and OVLO respectively) that monitor the
positive power supply terminal. If, at the beginning of the PWM pulse, positive power supply voltage is below the
UVLO threshold or above the OVLO threshold, the gate driver output is driven low and it skips that PWM pulse.
However, if UVLO or OVLO conditions occur after PWM pulse start, these conditions are ignored until the next
PWM pulse.
If the positive power supply recovers from the fault condition, normal operation resumes on the next PWM pulse.
Fault information is communicated to the MCU as narrow pulses. Based on the type of fault, the fault control logic
selects narrow pulses either from the input interface or from the output fault pulse generator.
A UVLO fault condition is communicated to the MCU as a FLT1 pulse that is an input interface pulse representing
the leading edge of the PWM pulse delayed by IX6611 propagation delay time. The OVLO fault condition is
communicated to the MCU as a FLT2 pulse that is an input interface pulse representing the trailing edge of the
PWM pulse, also delayed by IX6611 propagation delay time. The IGBT over-current condition is communicated to
the MCU as a FLT2 pulse from the internal output fault pulse generator, which is synchronized with an over-current
event, but not leading/trailing edges of the input PWM signal.
Layout and Use Considerations
o
o
o
o
o
o
Place external components as close to the package as possible and use thick, short connecting traces to
reduce the circuit impedance.
Pay special attention to the separation of isolated circuits to implement creepage distance limits for high
voltage applications.
Switching noise, which occurs from the GND, may cause instability; therefore, position blocking capacitors at
the +15 V source as close to IXIDM1401_M as possible.
The absolute maximum ratings of the module and external components should not be exceeded.
The thermal sensor’s inputs are not isolated from the primary side and its ground terminal is a direct
connection to the IXIDM1401_M ground terminal.
To prevent ESD damage to the module, install a 220 pF–470 pF ceramic capacitor with breakdown voltage
above the isolation barrier voltage between the primary and secondary side ground terminals.
© 2017 IXYS Corp.
Characteristics subject to change without notice
14
IXIDM1401_M_DS, Rev. No. 02
IXIDM1401_M
Typical Performance Characteristics
Figure 7 (a). Channel A Propagation Delay Time Rising Edge
Figure 7 (b). Channel A Propagation Delay Time Falling Edge
Red – INA signal, Green – Gate A signal
Red – INA signal, Green – Gate A signal
Figure 8 (a). Channel B Propagation Delay Time Rising Edge
Figure 8 (b). Channel B Propagation Delay Time Falling Edge
Red – INB signal, Magenta – Gate B signal
Red – INB signal, Magenta – Gate B signal
Figure 9 (a). Complementary Signal at Channel B with Both
Channels Active
Figure 9 (b). Complementary Signal Dead Time Channel A to
Channel B
Red – INA signal, Green – Gate A signal, Magenta – Gate B signal
Red – INA signal, Green – Gate A signal, Magenta – Gate B signal
© 2017 IXYS Corp.
Characteristics subject to change without notice
15
IXIDM1401_M_DS, Rev. No. 02
IXIDM1401_M
Typical Performance Characteristics (Continued)
Figure 10. Complementary Signal Dead Time Channel B to
Channel A
Figure 11. 3.3 V Supply Power Capability
fsw = 100 kHz, DC = 50%, INB = HIGH
Red – INA signal, Green – Gate A signal, Magenta – Gate B signal
Figure 12. Gate Logic 1 Voltage vs. Switching Frequency
Figure 13. Gate Logic 0 Voltage vs. Switching Frequency
DC = 50%, CGS = 10 nF
DC = 50%, CGS = 10 nF
Figure 14. Gate Logic 1 Voltage vs. Power Supply Voltage
Figure 15. Gate Logic 0 Voltage vs. Power Supply Voltage
fsw = 1 kHz DC = 50%, CGS = 10 nF
© 2017 IXYS Corp.
Characteristics subject to change without notice
fsw = 1 kHz DC = 50%, CGS = 10 nF
16
IXIDM1401_M_DS, Rev. No. 02
IXIDM1401_M
Ordering Information
IXIDM①②③④_⑤⑥⑦⑧_⑨
DESIGNATOR
DESCRIPTION
SYMBOL
DESCRIPTION
①
Module Configuration
1
Two Isolated Gate Drivers
②③
Isolation Voltage
40
4.0 kV
④
Gate Current
1
10 A
⑤⑥
Positive Gate Voltage
15
15 V
⑦⑧
Negative Gate Voltage
05
– 5 V
⑦⑧
Negative Gate Voltage
15
– 15 V
⑨
Package Information
O – Open Frame; M – Molded
Package Drawing and Dimensions
Units: mm
Top View
© 2017 IXYS Corp.
Characteristics subject to change without notice
Bottom View
17
IXIDM1401_M_DS, Rev. No. 02
IXIDM1401_M
Recommended Footprint (Component Side View)
Side View
Marking
XX - Represents production lot number
YY – Represents production year
WW – Represents work week
© 2017 IXYS Corp.
Characteristics subject to change without notice
18
IXIDM1401_M_DS, Rev. No. 02
IXIDM1401_M
Warranty and Use
IXYS CORP. MAKES NO WARRANTY, REPRESENTATION OR GUARANTEE, EXPRESS OR IMPLIED, REGARDING THE SUITABILITY OF ITS PRODUCTS FOR ANY
PARTICULAR PURPOSE, NOR THAT THE USE OF ITS PRODUCTS WILL NOT INFRINGE ITS INTELLECTUAL PROPERTY RIGHTS OR THE RIGHTS OF THIRD
PARTIES WITH RESPECT TO ANY PARTICULAR USE OR APPLICATION AND SPECIFICALLY DISCLAIMS ANY AND ALL LIABILITY ARISING OUT OF ANY SUCH
USE OR APPLICATION, INCLUDING BUT NOT LIMITED TO, CONSEQUENTIAL OR INCIDENTAL DAMAGES.
IXYS Corp. products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended
to support or sustain life, or for any other application in which the failure of the IXYS Corp. product could create a situation where personal injury or death may occur.
IXYS Corp. reserves the right to make changes to or discontinue any product or service described herein without notice. Products with data sheets labeled "Advance
Information" or "Preliminary" and other products described herein may not be in production or offered for sale.
IXYS Corp. advises customers to obtain the current version of the relevant product information before placing orders. Circuit diagrams illustrate typical semiconductor
applications and may not be complete.
IXYS Corp.
1590 Buckeye Dr.
Milpitas, CA 95035-7418
Phone: 408. 457.9000
Fax:
408. 496.0222
http://www.ixys.com
© 2017 IXYS Corp.
Characteristics subject to change without notice
Document No: IXIDM1401_M_DS
Revision:
02
Issue date:
9/12/2017
19
IXIDM1401_M_DS, Rev. No. 02
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