Data Sheet No. PD60228
IR2238Q
3-PHASE AC Motor Controller IC
Features
•
•
•
•
•
•
•
•
•
•
•
Floating channel up to +1200V
“soft” over-current shutdown turns off output
Integrated desaturation circuit
Two stage turn on output for di/dt control
Integrated brake IGBT driver with protection
Voltage feedback sensing function
Separate pull-up/pull-down output drive pins
Matched delay outputs
Under voltage lockout with hysteresis band
Programmable deadtime
Hard shutdown function
Product Summary
VOFFSET
IO+/- (min.)
1200V max.
220mA/460mA
VOUT
Brake (Io+/- min)
12.5V - 20V
40mA/80mA
Deadtime Asymmetry Skew (max.)
145nsec
Deadtime (typ. with RDT=39kΩ)
DESAT Blanking time (typ.)
3.0µsec
DSH, DSL input voltage
threshold (typ.)
Description
The IR2238Q is a high voltage, 3-phase IGBT driver
best suited for AC motor drive applications. Integrated
desaturation logic provides all mode of overcurrent
protection, including ground fault protection. Soft shutdown is predominantly initiated in the event of
overcurrent followed by turn-off of all six outputsf. A
shutdown input is provided for a customized shutdown function. The DT pin allows external resistor to
program the deadtime. Output drivers have separate
turn on/off pins with two stage turn-on output to
achieve the desired di/dt switching level of IGBT.
Voltage feedback provides accurate volts *seconds
measurement.
1µsec
8.0V
Soft shutdown duration time (typ.)
6.0µsec
Voltage feedback matching
delay time (max.)
125nsec
Package
64-Lead MQFP
Block
Diagram
15V
VCC
3
VB1,2,3
LIN1,2,3
3
HIN1,2,3
FAULT
DC
BUS
uP,Control
VCC
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HOQ1,2,3
W
HON1,2,3
V
BRIN
SD
IR2238Q
VFH1,2,3
VFL1,2,3
(Refer to Lead
Assignments for
correct pin
configuration).
This diagram
shows electrical
connections only.
HOP1,2,3
DSB
BR
DSH1,2,3
VS1,2,3
VCC
Motor
U
LOP1,2,3
LOQ1,2,3
LON1,2,3
DSL1,2,3
DT
COM
VSS
1
IR2238Q
Absolute Maximum Ratings
(tentative)
Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage parameters
are absolute voltages referenced to COM, all currents are defined positive into any lead. The thermal resistance and power
dissipation ratings are measured under board mounted and still air conditions.
Symbol
VS
VB
VHO
V CC
VSS
VLO
VIN
Definition
High side offset voltage
High side floating supply voltage
High side floating output voltage (HOP, HON, HOQ)
Low side and logic fixed supply voltage
Logic ground
Low side output voltage (LOP, LON, LOQ)
Logic input voltage (HIN/N,LIN, BRIN/N, SD)
VFLT
VF
V DSH
V DSL
VBR
dVs/dt
PD
FAULT output voltage
Feedback output voltage
High side desat/feedback input voltage
Low side desat/feedback input voltage
Brake output voltage
Allowable offset voltage slew rate
Package power dissipation @ TA ≤ +25°C
RthJA
TJ
TS
TL
Thermal resistance, junction to ambient
Junction temperature
Storage temperature
Lead temperature (soldering, 10 seconds)
Min.
Max.
VB1,2,3 -25
-0.3
VS1,2,3 - 0.3
-0.3
VCC - 25
-0.3
VB1,2,3 +0.3
1225
VB1,2,3 + 0.3
25
VCC + 0.3
VCC + 0.3
Units
VSS - 0.3
VCC + 0.3 or
VSS + 15
which ever is
lower
VSS - 0.3
VCC + 0.3
VSS - 0.3
VCC + 0.3
VS1,2,3 - 0.3 VB1,2,3 + 0.3
- 0.3
VCC + 0.3
-0.3
VCC + 0.3
—
50
—
2.0
—
—
-55
—
V
V/ns
W
°C/W
60
125
150
300
°C
Recommended Operating Conditions
For proper operation the device should be used within the recommended conditions. All voltage parameters are absolute
voltages referenced to COM. The VS offset rating is tested with all supplies biased at 15V differential.
Symbol
VB1,2,3
VS1,2,3
VHO1,2,3
VLO1,2,3
VIN
V CC
VSS
VFLT
VF
V DSH
V DSL
V BR
TA
Definition
High side floating supply voltage
High side floating supply offset voltage
High side (HOP/HOQ/HON) output voltage
Low side (LOP/LOQ/LON) output voltage
Logic input voltage (HIN/N,LIN,BRIN/N SD)
Low side supply voltage
Logic ground
FAULT output voltage
Feedback output voltage
High side desat/feedback input voltage
Low side desat/feedback input voltage
BRAKE output voltage
Ambient temperature
Min.
Max.
Units
VS1,2,3 + 13
Note 1
VS1,2,3
VCOM
VSS
12.5
-5
VSS
VSS
VS1,2,3 - 0.3
- 0.3
VCOM
-20
VS1,2,3 + 20
1200
VB1,2,3
V CC
VSS + 5
20
+5
V CC
V CC
VB1,2,3
V CC
V CC
115
V
°C
Note 1: Logic operational for Vs of COM-5V to COM+1200V. Logic state held for Vs of COM-5V to COM-VBS.
2
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IR2238Q
Static Electrical Characteristics
VBIAS (VCC, VBS1,2,3) = 15V and T A = 25o C unless otherwise specified. The VIN , VTH and I IN parameters are referenced to VSS and are applicable to all six channels (HOP/HOQ/HON1,2,3 and LOP/LOQ/LON1,2,3). The VO and IO
parameters are referenced to COM and VS1,2,3 and are applicable to the respective output leads: H O1,2,3 and L O1,2,3.
VDESAT and I DESAT parameters are referenced to COM and VS1,2,3
Symbol
Definition
Min. Typ. Max. Units Test Conditions
V CCUV+
VCC1 supply undervoltage positive going threshold
10.3
11.2
12.5
VCCUV-
VCC1 supply undervoltage negative going threshold
9.5
10.2
11.3
V CCUVH
VCC1 supply undervoltage lockout hysteresis
—
1.0
—
VBSUV+
VBS supply undervoltage positive going threshold
10.3
11.2
12.5
VBSUV-
VBS supply undervoltage negative going threshold
9.5
10.2
11.3
V BSUVH
VBS supply undervoltage lockout hysteresis
—
1.0
—
Offset supply leakage current
—
—
50
I LK
IQBS
Quiescent VBS supply current
—
150
250
I QCC
Quiescent VCC supply current
—
3
6
VIH
VIL
Logic “0” input voltage (HIN/N, BRIN/N) (OUT=LO)
Logic “1” input voltage (HIN/N, BRIN/N) (OUT=HI)
2.0
—
—
—
—
0.8
Vt+
Logic input positive going threshold
(HIN/N, LIN, BRIN/N, SD)
1.2
1.6
2.0
V t-
Logic input negative going threshold
(HIN/N, LIN, BRIN/N, SD)
0.8
1.2
V
µA
VB1,2,3 = VS1,2,3
= 1200V
VLIN=0V, VHIN=5V
mA
VLIN=0V, VHIN=5V
DT = 1µsec
V
VCC = 12.5 to 20V
1.6
∆VT
Logic input hysteresis (HIN, LIN, BRIN, SD)
—
0.4
—
VOH
High level output voltage, VBIAS - VO (normal switching) —
HOP, HOQ, LOP, LOQ
—
100
VOL
Low level output voltage, VO (normal switching)
HON, LON
—
—
100
IIN+
Logic “1” input bias current (HIN/N, BRIN/N)
—
5
—
VIN = 0V
Logic “1” input bias current (LIN, SD)
—
70
—
VIN = 5V
Logic “0” input bias current (HIN/N, BRIN/N)
—
70
—
Logic “0” input bias current (LIN, SD)
—
5
—
VIN = 0V
VDESAT = 15V
IIN-
mV
µA
Io = 1mA
VIN = 5V
I DS+
High DSH, DSL, DSB input bias current
—
15
—
IDS-
Low DSH, DSL, DSB input bias current
—
0.1
—
VDESAT = 0V
IO1+
Output high first stage short circuit pulsed current
220
350
—
VO = 0V, VIN = 0V
PW ≤ 200 ns
IO2+
Output high second stage short circuit pulsed current
120
200
—
Output low short circuit pulsed current
460
540
—
IO-
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mA
VO = 0V, VIN = 0V
PW ≤ 10 µs
VO = 15V, VIN = 5V
PW ≤ 10 µs
3
IR2238Q
Static Electrical Characteristics cont.
V BIAS (VCC, VBS1,2,3) = 15V and T A = 25oC unless otherwise specified. The V IN , VTH and I IN parameters are referenced to VSS and are applicable to all six channels (HOP/HOQ/HON1,2,3 and LOP/LOQ/LON1,2,3). The VO and I O
parameters are referenced to COM and V S1,2,3 and are applicable to the respective output leads: H O1,2,3 and L O1,2,3.
V DESAT and I DESAT parameters are referenced to COM and VS1,2,3
Symbol
Definition
Min. Typ. Max. Units Test Conditions
IOBR+
BR output high short circuit pulsed current
40
70
—
IOBR-
BR output low short circuit pulsed current
80
125
—
VOHB
BR high level output voltage, VCC-VBR
—
—
300
VOLB
BR low level output voltage, VBR
—
—
150
VOLVF
VFH or VFL low level output voltage
—
—
0.8
RON,VF
VFH or VFL output on resistance
—
60
—
RON,SS
Soft shutdown on resistance
—
500
—
RON,FLT
FAULT low on resistance
—
60
—
VDESAT+
High DSH1,2,3 and DSL1,2,3 and DSB input
threshold voltage
—
8.0
—
VDESAT-
Low DSH1,2,3 and DSL1,2,3 or DSB input
threshold voltage
—
7.0
—
DS input voltage hysteresis
—
1.0
—
VDSTH
mA
VBR=0V, VBRIN=0V
PW ≤ 10 µs
VBR=15V,VBRIN=5V
PW ≤ 10 µs
mV
IBR = 1mA
V
IVF = 10mA
Ω
V
AC Electrical Characteristics
VBIAS (VCC, VBS) = 15V, V S1,2,3 = VSS, TA = 25oC and C L = 1000 pF unless otherwise specified.
Symbol
Definition
Propagation Delay Characteristics
Ton1
Turn-on first stage duration time
Min.
—
Typ. Max. Units Test Conditions
200
—
VIN = 0 & 5V
RL(HOQ/LOQ) = 10Ω
ton
Turn-on propagation delay
250
550
750
toff
Turn-off propagation delay
250
550
750
tr
Turn-on rise time
—
80
—
tf
Turn-off fall time
—
25
—
tDESAT1
DSH to HO soft shutdown propogation delay at
HO turn-on
—
3000
—
tDESAT2
DSH to HO soft shutdown propogation delay after
1000
—
—
3000
—
ns
VIN = 0 & 5V
VS1,2,3 = 0 to1200V
HOP=HON,LOP=LON
Figure 5
VHIN = 0V,
VDESAT = 15V,
Figure 7
blanking
tDESAT3
4
DSL to LO soft shutdown propogation delay at
LO turn-on
—
VLIN = 5V,
VDESAT =15V, Fig.7
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IR2238Q
AC Electrical Characteristics cont.
V BIAS (VCC, VBS) = 15V, V S1,2,3 = VSS, T A = 25oC and C L = 1000 pF unless otherwise specified.
Symbol
Definition
Propagation Delay Characteristics
tDESAT4
DSL to LO soft shutdown propogation delay after
Min.
1000
Typ. Max. Units Test Conditions
—
VLIN = 5V,
VDESAT =15V, Fig. 7
—
blanking
tDESAT5
DSB to HO hard shutdown propogation delay
—
1300
—
VHIN = 0V,
VDESAT =15V, Fig. 7
tDESAT6
DSB to LO hard shutdown propogation delay
—
tDESAT7
DSB to BR hard shutdown propogation delay
1000
1300
—
VLIN = 5V,
VDESAT =15V, Fig. 7
tVFHL1,2,3
VFH high to low propagation delay
—
—
550
—
VVBRIN = 0V,
VDSB =15V, Fig. 7
—
VDESAT=15V to 0V
ns
tVFHHL1,2,3 VFH low to high propagation delay
—
550
—
Figure 8
VDESAT=0V to 15V
Figure 8
tVFLH1,2,3
VFL low to high propagation delay
—
550
—
VDESAT=0V to 15V
tVFLL1,2,3
VFL high to low propagation delay
—
550
—
VDESAT=15V to 0V
Minimum pulse width of VFH and VFL
—
400
—
VDESAT=15V to 0V
Figure 8
Figure 8
tPWVF
or 0v to 15V fig. 8
tDS
tSS
Soft shutdown minimum pulse width of DSx
Soft shutdown duration period
tFLT,DESAT1 DSH to FAULT propagation delay at HO turn-on
tFLT,DESAT2 DSH to FAULT propagation delay after blanking
tFLT,DESAT3 DSL to FAULT propagation delay at LO turn-on
tFLT,DESAT4 DSL to FAULT propagation delay after blanking
tFLTDSB
DSB to FAULT propagation delay
1000
—
—
—
6000
—
—
3300
—
—
1300
—
—
3300
—
—
1000
—
—
1000
—
CL=1000pF,
VDS=15V Figure 6
VHIN = 0V,
VDS =15V, Fig. 7
VLIN = 5V,
VDS =15V, Fig. 7
BRIN = 0V,
VDESAT =15V, Fig. 7
tFLTCLR
tfault
LIN1 =LIN2 =LIN3 =0 to FAULT
9.0
—
—
Minimum FAULT duration period
9.0
15.0
21.0
DS blanking time at turn-on
—
3000
—
VDESAT =15V, Fig. 7
µs
VDESAT =15V, Fig. 11
FLTCLR pending
tBL
VIN = on,
VDESAT =15V, Fig. 7
tSD
SD to output shutdown propagation delay
—
600
900
VIN = on,
VDESAT =0V, Fig. 10
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5
IR2238Q
AC Electrical Characteristics cont.
V BIAS (VCC, VBS) = 15V, V S1,2,3 = VSS, T A = 25o C and CL = 1000 pF unless otherwise specified.
Symbol
Definition
Propagation Delay Characteristics
tEN
Min.
Typ. Max. Units Test Conditions
SD negation to output enable propagation delay
—
600
900
BR output turn-on propagation
—
110
200
BR output turn-off propagation
—
80
150
BR output turn-on rise time
—
235
400
BR output turn-off fall time
—
130
200
900
1050
1200
VIN =on
VDESAT=0V, Fig.10
tonBR
toffBR
trBR
tfBR
Figure 5
ns
Deadtime/Delay Matching Characteristics
DT
Deadtime
Figure 8
external resistor=39kΩ
76
100
124
Figure 8
external resistor=0kΩ
4500
5000
5500
Figure 8
external resistor=220kΩ
MDT
Deadtime asymmetry skew, any of
—
—
145
—
—
125
DT=1000nsec.
Fig.5
6
PWM propagation delay matching max {ton/toff}
- min {ton/toff}, (ton/toff are applicable to all six
channels)
VM
Voltage feedback delay matching, I any of
tVFHL1,2,3, tVFHH1,2,3, tVFLL1,2,3, tVFLH1,2,3
- any of tVFHL1,2,3, tVFHH1,2,3, tVFLL1,2,3,
tVFLH1,2,3 I
DT=1000nsec.
—
125
Input pulse width
Fig.8
DTLoff1,2,3-DTHoff1,2,3
PM
ns
—
>400 nsec
Figure 9
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IR2238Q
Functional Block Diagram
VB1
HOQ1
LATCH
SCHMITT
TRIGGER
INPUT &
SHOOT
THROUGH
PREVENTION
HIN1
LIN1
HIN1
100nsec
minimum
Deadtime
LEVEL
SHIFTERS
SHUTDOWN
VFB
LOCAL DESAT
PROTECTION
SOFT
SHUTDOWN
VOLTAGE
FEEDBACK
HIN1
di/dt control
DRIVER
HOP1
HON1
VS1
DSH1
UV DETECT
VFH1
VB2
HIN2
SCHMITT
TRIGGER
INPUT &
SHOOT
THROUGH
PREVENTION
HIN2
LIN2
100nsec
minimum
Deadtime
LEVEL
SHIFTERS
SHUTDOWN
VFB
HOQ2
LATCH
LOCAL DESAT
PROTECTION
SOFT
SHUTDOWN
VOLTAGE
FEEDBACK
HIN2
di/dt control
DRIVER
HOP2
HON2
VS2
DSH2
UV DETECT
VFH2
VB3
HOQ3
HIN3
SCHMITT
TRIGGER
INPUT &
SHOOT
THROUGH
PREVENTION
HIN3
LIN3
100nsec
minimum
Deadtime
LEVEL
SHIFTERS
SHUTDOWN
VFB
LATCH
LOCAL DESAT
PROTECTION
SOFT
SHUTDOWN
VOLTAGE
FEEDBACK
HIN3
di/dt control
DRIVER
VS3
DSH3
UV DETECT
VFH3
SOFT
SHUTDOWN
SD
DT
LOCAL DESAT
PROTECTION
LOQ1
LIN1
di/dt control
SOFT
SHUTDOWN
VFL1
HOP3
HON3
DRIVER
LOP1
LON1
VOLTAGE
FEEDBACK
VFL2
DSL1
VFL3
LOCAL DESAT
PROTECTION
FAULT
LOGIC
CLEAR
LOGIC
LOP2
LIN2
di/dt control
SOFT
SHUTDOWN
DRIVER
LOP2
LON2
VOLTAGE
FEEDBACK
DSL2
FAULT
LOCAL DESAT
PROTECTION
VCC
SOFT
SHUTDOWN
To Low Side Logic
UV
DETECT
LOQ3
LIN3
di/dt control
DRIVER
LOP3
LON3
VOLTAGE
FEEDBACK
DSL3
BRIN
VSS
SHUTDOWN
DESAT
DETECTION
BRAKE
DRIVER
BR
DSB
Figure 1
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COM
7
IR2238Q
Gate Drive Circuit
Block Diagram
VB
HOP
ONE SHOT
PRE
DRIVER
Gate
HOQ
HON
3usec
Blanking
UV Detect
Soft Shutdown
Impedence =
500 ohms
6usec
One Shot
Shutdown
1usec
filter
Voltage
Feedback
DSH
8V
VS
Figure 2 Driver Output Circuit Block Diagram
VB1
HOQ1
LATCH
HIN1
LIN1
HIN1
SCHMITT
TRIGGER
INPUT &
SHOOT
THROUGH
PREVENTION
100nsec
deadtime
Input
Latch
LEVEL
SHIFTERS
SHUTDOWN
VFB
LOCAL DESAT
PROTECTION
SOFT
SHUTDOWN
VOLTAGE
FEEDBACK
HOLD
HIN1
di/dt control
DRIVER
HOP1
HON1
VS1
DSH1
UV DETECT
VFH1
HOLD LATCH
ONESHOT 6us
HARD
SHUTDOWN
Q
SET
S
VSS
Q CLR R
Fltduration
ONESHOT 12us
FAULT
FAULT
LOGIC
CLEAR
LOGIC
LIN2
LIN3
HIN2 SHUTDOWN ONESHOT
HIN3 SHUTDOWN ONESHOT
LIN3 SHUTDOWN ONESHOT
LIN2 SHUTDOWN ONESHOT
VCC
UV
DETECT
SHUTDOWN
ONESHOT
SOFT
SHUTDOWN
LOCAL DESAT
PROTECTION
SOFT SHUTDOWN
VOLTAGE
FEEDBACK
LOQ1
LIN1
di/dt control
DRIVER
LOP1
LON1
VFL1
DSL1
To Low Side Logic
HARD SHUTDOWN
DESAT
DETECTION
BRAKE
DRIVER
BR
VOLTAGE
FEEDBACK
BRIN
DSB
Figure 3 Fault Logic Diagram
8
COM
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IR2238Q
HIN1,2,3
LIN1,2,3
DS/VFH1,2,3
DS/VFL1,2,3
SD
FAULT
BRIN
BR
DSB
HO(HOP/HOQ/HON)
LO(LOP/HOQ/LON)
VFH1,2,3
VFL1,2,3
Figure 4 Input/Output Timing Diagram
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9
IR2238Q
PW in
BRIN
HIN
5V or
3.3V
50%
50%
LIN
t on
t off
tr
tf
PWout
HO (HOP=HON)
LO (LOP=LON)
BR
90%
90%
10%
10%
t on1
HOQ
LOQ
50%
50%
10%
Figure 5 Switching Time Waveforms
LIN
3.3V
or 5V
1,2,3
t
DS
8V
DSL
7V
active
Soft Shutdown Driver Enable for all L.S. output
&
Hold Driver Enable for all H.S. output
t
LO
t SS
DESAT4
1,2,3
Hard Shutdown Driver Enable for all output
Figure 6.1 Low Side Desat Soft Shutdown Timing Waveform
10
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IR2238Q
3.3V
or 5V
HIN1
t DS
8V
DSH1
7V
active
Soft Shutdown Driver Enable for H.S. output on Desaturation
and all Low Side output
&
Hold Driver Enable for the remaining H.S. output
t DESAT2
t SS
HO1
active
Hard Shutdown Driver Enable for all output
Figure 6.2 High Side Desat Soft Shutdown Timing Waveform
3.3V
or 5V
BRIN
t DS
DSB
7V
8V
tDESAT7
Hard Shutdown
in effect
BR
tDESAT5, tDESAt6
Hard Shutdown
in effect
HO1,2,3
LO1,2,3
Figure 6.3 Brake Desat Timing Waveform
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11
IR2238Q
Blanking
in effect
HIN1,2,3
Blanking
in effect
Blanking
in effect
Blanking
in effect
LIN1,2,3
DSH
8V
8V
DSL
8V
8V
8V
DSB
t FLTCLR
tFLTCLR
FAULT
t FLT,DESAT1 50%
t FLT,DESAT2
t FLTCLR
50%
t FLTCLR
t FLT,DESAT3 50%
t FLTCLR
t FLT,DESAT4 50%
50%
50%
t FLT,DSB
t DESAT2
t DESAT5
DESAT1
50%
t BL
SOFT SHUTDOWN
HARD
SHUTDOWN
90%
90%
90%
50%
LO
(LOP/LOQ/LON)
t FLTCLR
t FLT,DSB
tfault
t
HO
(HOP/HOQ/HON)
8V
SOFT SHUTDOWN
t DESAT3
t BL
90%
50%
t DESAT6
90%
90%
SOFT SHUTDOWN
50%
t BL
t DESAT4
t BL
t DESAT7
t DESAT7
90%
90%
SOFT SHUTDOWN
BR
Figure 7 Desat Timing Diagram
12
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IR2238Q
HIN
LIN
DTHoff
DTLoff
90%
HO (HOP=HOQ=HON)
10%
50%
50%
DT
90%
DT
50%
50%
10%
LO (LOP=LOQ=LON)
Figure 8 Internal Deadtime Timing
VB1,2,3
7V
DSH1,2,3
8V
VS1,2,3
VB1,2,3
8V
DSL1,2,3
VS1,2,3
VCC
VFH1,2,3
t
VFHL1,2,3
t VFLH1,2,3
VCC
VSS
t VFHH1,2,3
90%
VSS
VFL1,2,3
7V
t
10%
VFLL1,2,3
90%
10%
Figure 9 Voltage Feedback Timing
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13
IR2238Q
SD
50%
5V or
3.3V
50%
t SD
t EN
15V
HO (HOP=HOQ=HON)
LO (LOP=LON=LOQ)
90%
10%
Figure 10 Shutdown Timing
HIN
LIN
DSH
HO
tfault
FAULT
50%
50%
Figure 11 Fault Duration with Pending Faultclear Waveform
(refer to Note LD2 under the lead definition table)
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IR2238Q
Lead Definitions
Symbol
Description
VCC
Low side supply voltage
VSS
Logic Ground
HIN1,2,3
Logic inputs for high side gate driver outputs (HOP1,2,3/HON1,2,3, out of phase)
LIN1,2,3
Logic inputs for low side gate driver outputs (LOP1,2,3/LON1,2,3, out of phase)
FAULT
SD
Fault output (latched and open drain)
Shutdown input
DT
Deadtime programmable resistor pin
DSB
Brake IGBT desaturation protection input and voltage feedback input
BRIN
Logic input for brake driver
BR
COM
VB1,2,3
Brake driver output
Low side drivers return
HOP1,2,3
High side driver sourcing output
HOQ1,2,3
High side driver boost sourcing output
High side gate drive floating supply
HON1,2,3
High side driver sinking output
DSH1,2,3
VS1,2,3
IGBT desaturation protection input and high side voltage feedback input
High voltage floating supply return
LOP1,2,3
Low side driver sourcing output
LON1,2,3
Low side driver sinking output
DSL1,2,3
IGBT desaturation protection input and low side voltage feedback input
VFH1,2,3
High side voltage feedback logic output
VFL1,2,3
Low side voltage feedback logic output
NOTE:
LD1-
Low side soft shutdown is initiated locally in an event over current, which is sensed by the DSL pin. It is
followed by the synchronized soft shutdown of the rest of the low side outputs; meanwhile it will hold all input
information for a period of tss until the soft shutdown finishes. Then the hard shutdown will be initiated to
complete the shut down cycle. (Figure 6.1)
High side soft shutdown is initiated locally in an event over current, which is sensed by the DSH pin. It is
followed by the synchronized soft shutdown of all the low side outputs; meanwhile it will hold all input information
for a period of tss until the soft shutdown finishes. Then the hard shutdown will be initiated to complete the shut
down cycle. (Figure 6.2)
LD2-
Soft shutdown is initiated in an event of overcurrent, which is followed by turn-off all six outputs. The fault
condition will remain in a fixed period(tfault) even though the faultclear condition is in effect (Fig11). In the case
that faultclear is not in effect, fault duration = tfault + tfltclr.
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15
IR2238Q
VS3
DSH3
HON3
HOP3
HOQ3
VB3
VS2
DSH2
HON2
HOQ2
HOP2
VB2
Lead Assignments
5.3mm
5.3mm
51 50 49 48 47 46 45
52
3.5mm
53
(4.3mm)
44 43 42
41 40 39 38 37
36 35 34
3.5mm
(4.3mm)
5.0mm
33
32
VCC
31
LOP1
VS1
54
30
LOQ1
DSH1
55
29
LON1
HON1
56
28
DSL1
HOQ1
57
27
LOP2
HOP1
58
26
LOQ2
59
25
LON2
60
24
DSL2
61
23
LOP3
62
22
LOQ3
63
21
LON3
20
DSL3
FAULT
BRIN
18 19
COM
LIN3
12 13 14 15 16 17
DSB
LIN2
10 11
BR
LIN1
9
VSS
8
VFL3
7
VFL2
6
VFL1
5
VFH3
4
VFH2
3
VFH1
2
SD
64
1
HIN3
DT
HIN2
4.5mm
HIN1
VB1
MQFP64
64 Lead MQFP
IR2238
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IR2238Q
Case outline
64-Lead MQFP
01-6054 00
01-2023 01 MS-022GA-2
WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245 Tel: (310) 252-7105
This product has been designed and qualified for the consumer market.
Qualification Standards can be found on IR’s Web Site http://www.irf.com
Data and specifications subject to change without notice.
10/5/2004
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