Recommended Circuit Example When Using a Photo Coupler

Microcomputer

GND

IN

5V

15V

Vcc

P

N

5V

(a) IPM input pin (high-side 3-phase and low-side 3-phase)

Microcomputer

FO

GND

5V

15V

Vcc

P

N

(b) Fault output pin

Figure 12. I/O Interface Circuit When Using Photo Coupler

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