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PDF IR2238Q Data sheet ( Hoja de datos )
| Número de pieza | IR2238Q | |
| Descripción | 3-PHASE AC Motor Controller IC | |
| Fabricantes | International Rectifier | |
| Logotipo |  |
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Data Sheet No. PD60228
IR2238Q
Features
3-PHASE AC Motor Controller IC
• 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.)
VOUT
Brake (Io+/- min)
1200V max.
220mA/460mA
12.5V - 20V
40mA/80mA
Deadtime Asymmetry Skew (max.) 145nsec
Deadtime (typ. with RDT=39kΩ)
1µsec
DESAT Blanking time (typ.)
3.0µsec
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 shut-
down is predominantly initiated in the event of
overcurrent followed by turn-off of all six outputsf. A
shutdown input is provided for a customized shut-
down 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.
DSH, DSL input voltage
threshold (typ.)
Soft shutdown duration time (typ.)
Voltage feedback matching
delay time (max.)
Package
64-Lead MQFP
8.0V
6.0µsec
125nsec
Block
Diagram
DC
BUS
(Refer to Lead
Assignments for
correct pin
configuration).
This diagram
shows electrical
connections only.
15V
uP,Control
VCC
3
3
VCC
VB1,2,3
LIN1,2,3
HIN1,2,3
FAULT
BRIN
HOP1,2,3
HOQ1,2,3
HON1,2,3
IR2238QSD DSH1,2,3
VFH1,2,3
VS1,2,3
VFL1,2,3
LOP1,2,3
DSB
BR
DT
VSS
LOQ1,2,3
LON1,2,3
DSL1,2,3
COM
VCC
W
V Motor
U
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IR2238Q
AC Electrical Characteristics cont.
VBIAS (VCC, VBS) = 15V, VS1,2,3 = VSS, TA = 25oC and CL = 1000 pF unless otherwise specified.
Symbol
Definition
Propagation Delay Characteristics
tDESAT4 DSL to LO soft shutdown propogation delay after
blanking
tDESAT5 DSB to HO hard shutdown propogation delay
tDESAT6 DSB to LO hard shutdown propogation delay
tDESAT7 DSB to BR hard shutdown propogation delay
tVFHL1,2,3 VFH high to low propagation delay
tVFHHL1,2,3 VFH low to high propagation delay
tVFLH1,2,3 VFL low to high propagation delay
tVFLL1,2,3 VFL high to low propagation delay
tPWVF Minimum pulse width of VFH and VFL
tDS Soft shutdown minimum pulse width of DSx
tSS 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
tFLTCLR
tfault
LIN1 =LIN2 =LIN3 =0 to FAULT
Minimum FAULT duration period
tBL DS blanking time at turn-on
tSD SD to output shutdown propagation delay
Min.
1000
—
—
1000
—
—
—
—
—
1000
—
—
—
—
—
—
9.0
9.0
—
—
Typ. Max. Units Test Conditions
—
1300
1300
—
550
550
550
550
400
—
6000
3300
1300
3300
1000
1000
—
15.0
3000
600
— VLIN = 5V,
VDESAT =15V, Fig. 7
— VHIN = 0V,
VDESAT =15V, Fig. 7
— VLIN = 5V,
VDESAT =15V, Fig. 7
— VVBRIN = 0V,
VDSB =15V, Fig. 7
— VDESAT=15V to 0V
ns Figure 8
— VDESAT=0V to 15V
Figure 8
— VDESAT=0V to 15V
Figure 8
— VDESAT=15V to 0V
Figure 8
— VDESAT=15V to 0V
or 0v to 15V fig. 8
— CL=1000pF,
— VDS=15V Figure 6
— VHIN = 0V,
— VDS =15V, Fig. 7
— VLIN = 5V,
— VDS =15V, Fig. 7
— BRIN = 0V,
VDESAT =15V, Fig. 7
— VDESAT =15V, Fig. 7
21.0 µs VDESAT =15V, Fig. 11
FLTCLR pending
— VIN = on,
VDESAT =15V, Fig. 7
900 VIN = on,
VDESAT =0V, Fig. 10
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HIN1
t DS
DSH1 8V 7V
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
HO1
t SS
IR2238Q
3.3V
or 5V
active
Hard Shutdown Driver Enable for all output
active
Figure 6.2 High Side Desat Soft Shutdown Timing Waveform
BRIN
t DS
3.3V
or 5V
DSB
BR
HO1,2,3
LO1,2,3
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8V
tDESAT7
7V
t tDESAT5, DESAt6
Hard Shutdown
in effect
Hard Shutdown
in effect
Figure 6.3 Brake Desat Timing Waveform
11
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet IR2238Q.PDF ] | |
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