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VLA500-02R Schematic ( PDF Datasheet ) - Isahaya Electronics

Teilenummer VLA500-02R
Beschreibung DRIVER FOR IGBT MODULES
Hersteller Isahaya Electronics
Logo Isahaya Electronics Logo 




Gesamt 8 Seiten
VLA500-02R Datasheet, Funktion
DESCRIPTION
VLA500-02R is a hybrid integrated circuit designed for driving
n-channel IGBT modules in any gate-amplifier application.
This device include the isolated type DC-DC converter for a
Gate drive. Therefore design of the gate power supply is not
required.
The system of built-in short circuit protection provide a margin
to time by function to maintain reverse bias for a predetermined
time after the detection of short circuit.
Recommended IGBT modules:
VCES=600V series up to 600A class
VCES=1200V series up to 1400A class
OUTLINE DRAWING
83.0 MAX
FEATURES
•Built-in the isolated type DC-DC converter for gate drive
•SIP outline allows more space on mounting area
2.54
5.0 MAX
1
•Built-in short circuit protection (With fault output)
•Variable fall time on activity of short circuit protection
•Electrical isolation voltage between input and output is 2500Vrms (for 1minute)
•HCMOS compatible input.
HYBRID IC
VLA500-02R
DRIVER FOR IGBT MODULES
Dimensions: mm
5.0MAX
4.5MAX
30
11.5MAX
15.5MAX
APPLICATIONS
To drive IGBT modules for inverter or AC servo systems application
BLOCK DIAGRAM
1
VD 2
INVERTER
Gi 3
4
VI+ 6
REGULATOR
19 Vcc
LATCH
DETECT
CIRCUIT
29
ttrip
CONTROL PIN
30
DETECT
PIN
TIMER
&RESET
CIRCUIT
20 GND
25
COLLECTOR
26
9108%0 ohm
VI- 7
INTERFACE
GATE SHUT-
DOWN
CIRCUIT
23
Vo
24
SHUT-DOWN
27 SPEED
CONTROL
28
FAULT
OUTPUT
21
22 VEE
1






VLA500-02R Datasheet, Funktion
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 a fault sign (“L”) which
inform that protection circuit is operating at the same time from pin 28 .
(2) The protection circuit reset and resorted to ordinary condition if input
sign is “L” when the predetermined time(1 ~ 2ms) passed.
(“L” period needs 15us or more )
(3) When the output rises, the controlled time detect short circuit
(Typ 2.8us) 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 pin 21,22 and 29.
HYBRID IC
VLA500-02R
DRIVER FOR IGBT MODULES
ADJUSTMENT OF OUTPUT FALL TIME
(When the protection circuit is operating)
In case you want to decrease the speed of reverse bias when the
protection circuit is operating, you can adjust that speed by connecting
the capacitor (Cs) between pin 21,22 and 27.
(Please refer to under figures. )
INPUT
SIGNAL
t1
90%
t2
50%
OPERATION FLOW ON DETECTING SHORT CIRCUIT
Vo
10%
0%
START
DETECTION OF
SHORT CIRCUIT
GATE SHUTDOWN
CIRCUIT OPERATE
TIMER START
OUTPUT FAULT SIGN
1 ~ 2ms
END OF TIMER
NO
YES
INPUT SIGN IS “L”
NO
YES
RESET
Note : “L” output voltage with protection circuit operating is about VEE + 2V.
t1,t2 VS. Cs CHARACTERISTICS
50
VD=1254VV
45 TTaa==2255ddeeggC.
(TYPICAL)
40
35
30
t2
25
20
15
10 t1
5
0
0 200 400 600
CONNECTIVE CAPACITANCE Cs (pF)
(PIN:27-21)
800
6

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