PC928 Sharp Microelectronics, PC928 Datasheet - Page 15

• Manufacturer Part Number: PC928
• Description: PHOTOCOUPLER OPIC 14-SMD
• Manufacturer: Sharp Microelectronics
• Series: OPIC™r

Specifications of PC928

• Voltage - Isolation: 4000Vrms
• Number Of Channels: 1, Unidirectional
• Current - Output / Channel: 100mA
• Propagation Delay High - Low @ If: 100µs @ 10mA
• Current - Dc Forward (if): 25mA
• Input Type: DC
• Output Type: Push-Pull, Totem-Pole
• Mounting Type: Surface Mount
• Package / Case: 14-SMD
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 425-1543-5

Fig.41 Operations of Shortcircuit Protector Circuit
Remarks : Please be aware that all data in the graph are just for reference and not for guarantee.
1. Detection of increase in V
2. Reduction of the IGBT gate voltage, and suppression of the collector current
3. Simultaneous output of signals to indicate the shortcircuit condition (FS signal) from FS terminal (pin
4. Judgement and processing by the microcomputer
the microcomputer
TTL, microcomputer, etc.
Anode
Anode
Cathode
CE(sat)
1
2
3
of IGBT due to overcurrent by means of C terminal (pin
Amp.
Constant voltage circuit
IGBT protector
PC928
circuit
15
In the case of instantaneous shortcircuit, run continues.
At fault, input to the photocoupler is cut off, and IGBT is
turned OFF.
Typ. 150kΩ
Feedback to primary side
Tr. 1
Tr. 2
V
C
14
13
12
11
10
9
8
V
C
FS
O
O
GND
CC
1
2
R
G
V
CC
R
C
C
P
9
V
EE
)
IGBT
Sheet No.: D2-A06202EN
PC928 Series
8
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