Hitachi RAS-10JH1 Service Manual page 55

4. IPM (Intelligent Power Module)
• Fig.4-1 shows the intelligent power module and its peripheral circuit.
The three transistors on the positive side are called the upper arm, and the three transistors on the
negative side, the lower arm.
狹
狷
Fig. 4-1 Intelligent power module circuit (U
E E
+ is ON, V is ON)
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E
−