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PDF VLA585-01R Data sheet ( Hoja de datos )
| Número de pieza | VLA585-01R | |
| Descripción | DRIVER FOR IGBT MODULES | |
| Fabricantes | Isahaya Electronics | |
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DIP-GAM
VLA585-01R
PRELIMINARY
＜Dual-In-Line Package Gate Amp Module＞
VLA585-01R
DRIVER FOR IGBT MODULES
FEATURES
-Low height, DIP structure
-Isolated gate signal by pulse transformer
-Corresponding to gate signal ON Duty 100%
-Dual gate drive circuits
-Built in isolated DC-DC converter for gate drive
-Built in short circuit protection with soft gate shut down
-Adjustable fall time on activity of short circuit protection
-Output peak gate current is +/-20A(max)
-Isolation voltage is 4000Vrms (for 1 minute)
-CMOS compatible input interface (Input low active type)
-Low voltage lock out for gate power supply(VCC)
TARGETED IGBT MODULES
VCES = 600V series up to 600A class
VCES = 1200V series up to 1400A class
VCES = 1700V series up to 1400A class
APPLICATIONS
To drive IGBT modules for inverter or AC servo system application
BLOCK DIAGRAM
VIN+1 5
5V Gsig1 4
VIN‐1 3
TRANS.
DRIVE
CIRCUIT
VD 54
15V
Gi 53
TEST 1
VIN+2 50
5V Gsig2 51
VIN-2 52
N.C 2
DC－AC
TRANS.
DRIVE
CIRCUIT
TIMER&
RESET
LATCH DETECT
INTERFACE
GATE SHUT DOWN
VCC1
UVL
VEE1
VCC2
UVL
VEE2
TIMER&
RESET
LATCH DETECT
INTERFACE
GATE SHUT DOWN
* 1pin:Test pin (Not to be connected electrically to other line
1
25 VCC1
27 Detect1
26 Ctrip1
19 Clamp1
24 Vo1
22 E1
21 Fo1
20 Cs1
23 VEE1
30 VCC2
28 Detect2
29 Ctrip2
36 Clamp2
31 Vo2
33 E2
34 Fo2
35 Cs2
32 VEE2
Sep.2016
1 page  
DIP-GAM
PRELIMINARY
＜Dual-In-Line Package Gate Amp Module＞
VLA585-01R
DRIVER FOR IGBT MODULES
OPERATION OF PROTECTION CIRCUIT
(1) In case the gate voltage is “H” and the collector voltage is high, this hybrid IC will recognize the circuit as short
circuit and immediately reduce the gate voltage. Besides, put out error signal (”L”) which inform that protection
circuit is operating at the same time from pin 21 or 34.
(2) The protection circuit reset and resort to ordinary condition if input signal is “OFF” when the premised 1~2msec
passed. ( “OFF” period needs 10us or more )
(3) When the output rises, the masked time detect short circuit (ttrip) is set up so that on-time of IGBT can be
secured properly.
It is possible to adjust that time by connecting the capacitor (Ctrip) between pin26 and 22 (29 and 33).
(4) When the short circuit protection works, the soft gate shut down circuit works to suppress collector surge voltage
of IGBT. Furthermore, when it is necessary to be more soft, by adding a capacitor between Cs and VEE terminals,
it is possible to make gate shut down speed more slow.
LATCH & TIMER RESET SYSTEM IN SHORT-
CIRCUIT PROTECTION CIRCUIT
Once the short-circuit protection circuit starts, it shuts down
the gate output and keeps alarm output, causing the latch
status. This status is canceled if the input signal is OFF when
specific time elapses after the activation of the short-circuit
protection circuit. Then, gate output depending on input
signals becomes possible. If the input signal is ON when
specific time elapses, the latch status is not canceled: it is
canceled when the signal becomes OFF.
As mentioned above, on the latch & timer reset system, the
latch status is resulted after activation of the protection circuit
and shutdown of the gate output. Therefore, during this
period, gate output is not made no matter how much input
signals are received. For this reason, it is possible to safely
stop the entire equipment by sending error signals to the
microcomputer during this period to stop all gate signals.
OPERATION FLOW ON DETECTING SHORT CIRCUIT
START
DETECTION OF
SHORT CIRCUIT
GATE SHUTDOWN
TIMER START
OUTPUT FAULT SIGNAL
END OF TIMER
TIMER
1 ~ 2ms
TIMING CHART
V_Gsig
INPUT SIGNAL IS
OFF
CLEAR ALARM
ENABLE OUTPUT
Vo
VCE
(IGBT)
IC
(IGBT)
Fo
Short-circuit
occurrence
Masked time (ttrip)
VSC
Timer
The latch status is canceled.
5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet VLA585-01R.PDF ] | |
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