Specifications

27
Dec. 20
Mitsubishi IPM-series Application Note
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Low speed photo coupler
Low speed photo coupler is connected Fo terminal of IPM.
When choosing photo coupler, pay attention to the parameter of CTR.
Choose the photo coupler that the value of CTR is equal to or more than 100 %.
For example)
TLP-521 (Toshiba)
PS2502 (NEC)
Please inquire the manufacturer that the photo-coupler has or has not problem when work under your
environmental condition.
Words and terms)
CTR (Current Transfer Ratio) : T
he ratio of the output current to the input current
CMR (Common Mode Rejection) :
The maximum rise ratio of common mode voltage
tpLH,tpHL : The Propagation
delay time LψH ,HψL
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㪚㫆㫅㫋㫉㫆㫃㩷㫀㫅㫇㫌㫋㩷㫊㫀㪾㫅㪸㫃
㩿㫊㪼㪺㫆㫅㪻㫃㫐㩷㫊㫀㪻㪼㩷㫆㪽㩷
㫇㪿㫆㫋㫆㩷㪺㫆㫌㫇㫃㪼㫉㪀㩷
㩷㩷㩷㩷㩷㪌㪭㪆㪻㫀㫍㩷
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㪚㫆㫃㫃㪼㪺㫋㫆㫉㩷㪺㫌㫉㫉㪼㫅㫋㩷
㫆㪽㩷㫇㪿㫆㫋㫆㩷㪺㫆㫌㫇㫃㪼㫉㩷
㩷㩷㩷㩷㩷㪈㫄㪘㪆㪻㫀㫍㩷
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㫋㫀㫄㪼㩷㪑㪈㪇㫌㫊㪆㪻㫀㫍㩷
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8EKP
Fig.9.4 The example of the input/output waveform of the control input terminal(photo coupler output).
Using IPM