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PDF VLA526A-06AR Data sheet ( Hoja de datos )
| Número de pieza | VLA526A-06AR | |
| Descripción | Hybrid IC | |
| Fabricantes | Isahaya Electronics Corporation | |
| Logotipo |  |
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HYBRID IC
VLA526A-06AR
Hybrid IC for driving IGBT modules
DESCRIPTION
The VLA526A-06AR is the 6-element gate driver for a
OUTLINE DRAWING
Dimensions: mm
400VAC 3 phase inverter. 3 circuits of high side are isolated
between input and output and the power supplies consist of the
88.0MAX
Mark
inside. This Hybrid IC can be driven by input voltage of 2 lines
(+15V and +5V). By connecting the resistor for current detection
between B-N, this Hybrid IC can detect an over-current, and can
cut off each gate signal.
The low side of an input part has a timing revision circuit that
can revise time lag with the signal of high side and this hybrid IC
can realize the optimum inverter drive.
Recommended IGBT module: VCES=1200V/ up to 25A class
FEATURES
2.54
7.5MAX
30
0.5 +0.15/-0.1
7.5MAX
1
4.0MAX
0.25
+0.2/-0.1
9.5MAX
13.0MAX
•Supply voltage ···································+5V, +15V
•High side isolation voltage············· 2500Vrms, for 1 min
•The power supply for a high side gate drive and the electrolysis capacitor for voltage compensation are unnecessary.
•SIL structure, 6-circuit driver built-in, it saves area on mother board.
•Recommended switching frequency range is up to 3kHz.
APPLICATIONS
IGBT drive for 3 phase inverter etc.
BLOCK DIAGRAM
UP 19
VP 20
WP 21
Oscillator
Oscillator
Oscillator
Buffer
Buffer
Buffer
Comparator
with
hysteresis
Drive
circuit
Comparator
with
hysteresis
Drive
circuit
Comparator
with
hysteresis
Drive
circuit
1 UPG
2 UPS
6 VPG
7 VPS
11 WPG
12 WPS
UN 22
VN 23
WN 24
Timing revision
circuit
Timing revision
circuit
Timing revision
circuit
FO 25
CIN 26
Timer
Drive
circuit
Drive
circuit
Drive
circuit
4.7uF
16 UNG
17 VNG
18 WNG
27 GND2
30 29
VCC1 VCC2
28
GND
1 page  
HYBRID IC
VLA526A-06AR
Hybrid IC for driving IGBT modules
PROTECTION OPERATION MODE
This Hybrid IC has the protection operation function, and it works by detecting the both-ends voltage of the current detection resistor (Rs)
that is connected between the inverter and converter. (Refer to the following figure)
Specifically, in following procedure, this Hybrid IC suspends the all gate output for timer time when unusual. Detection of the voltage
generated by unusual current (Ierror) which flows resistor (Rs) when unusual, such as a short-circuit in an inverter main circuit etc. (Rs •
Ierror) The detection voltage and the standard voltage (Voc) are compared, and when unusual, the circuit that outputs “L” is constituted and
that output is connected to pin 26 of this Hybrid IC.
In addition, protection operation is started only when unusual output “L” is held for 5.1µs (max: set time of timer), and by the time it starts
protection operation there is delay time for max 7.7µs. Moreover, according the current sink capability of a comparator, set time of timer may
become long. The length of the timer time in the protection operation mode changes according to unusual judging time, and timer time also
becomes longer as an unusual period excels.
(Cautions) As the comparator for over-current detection, it must be open-collector type.
In case of a totem-pole type comparator, a timer circuit becomes invalid.
COM
Over-current
detection circuit
Rs
VLA526A-06AR
The comparator for
Protection circuit
over-current detection
-
26
+
Timer
Voc
28
An example for external circuit to detect over current
5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet VLA526A-06AR.PDF ] | |
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