Samsung RB31FEJNB Series Service Manual page 81

5. PCB/PBA DIAGRAM
5-2) Parts Layout (Inverter Board)
1. PBA Power Supply : Supplies DC 16V and 5V to the Inverter circuit for the Compressor control.
2. COMP Driving / Feedback Circuit
It receives the COMP(MSV) operation signals from the Main PBA and feedbacks the inverter errors to the
Main PBA.
3. Micom (uPD78F1201)
4. BOOTSTRAP Charger : It is an independent power circuit for the driving of the IPM High-Phase IGBT.
5. Current Sensing Circuit : It detects the currents taken by the Shunt resistance and does the PWM DUTY
6. IPM (IGCM04G60HA)
control.
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