PC929J00000F View Datasheet(PDF) - Sharp Electronics
Part Name
Description
MFG CO.
PC929J00000F
Sharp Electronics
'PC929J00000F' PDF : 22 Pages View PDF
PC929J00000F Series
Fig.39 Overcurrent Detecting Voltage - Supply Voltage Characteristics Test Circuit
Anode
VCC
IF
O1
VCC
Cathode
O2
RG
V RC
C
VO2
FS
GND
CP
CG
VC
V
Fig.40 Example of The Application Circuit (IGBT Drive for Inverter)
Anode
VCC
R1
Cathode
O1
+
VCC1=12V
(+)
O2
CB
RG
Cathode
RC
TTL, micro computer,
C
R2
D1
etc.
FS
D2
R3 Cp
+
VCC2=12V
GND
(−)
To micro computer
RFS
PC817X etc.
CFS
• In order to stabilize the power supply line, we recommend to locate a bypass capacitor CB (0.01µF or more)
between VCC and GND near photocoupler.
• In order to stabilize the detecting voltage of pin-C, we recommend to locate a capacitor CP (approximately
1 000pF) between pin-C and GND, and a resistor RC (approximately 1.0kΩ) between VCC and pin-C.
However, the rise time of the detection voltage at Pin-C varies along with the time constants of CP and RC.
So, please make sure the device works properly in actual conditions.
• For the diode D, which is located between pin-C and collector of IGBT, we recommend to use a diode that
has the withstand voltage characteristic equivalent to IGBT and also has little leak current.
• In order to prevent the failure mode or breakdown of pin-C from VCE variation of IGBT, we recommend to
locate a resistor R2 (approximately 10kΩ) and a diode D1 at near pin-C, and a resistor R3 (approximately
50kΩ) and a diode D2 at between pin-C and GND.
This application circuit shows the general example of a circuit, and is not a design guarantee
for right operation.
Sheet No.: D2-A06302EN
14
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