Desktop Motherboard repairing VRM Circuit . vrm circuit repairing troubleshooting notes

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डेस्कटॉप मदरबोर्ड रिपेयर कैसे करे - complete notes in hindi
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Details of VRM Circuit Block Diagram
 Input Supply for VRM Circuit out from SMPS and goes to Drain of Main Mosfet trhough Input Coil and Capacitor.
 Input Coil and Capacitor used for Filteration of Input Suply.
 Output Core Voltage out from Source of Main Mosfet and goes to CPU Socket through Output Coil and Output Filter Capacitor.
 Source of Main Mosfet is also connected with Drain of Supporing Mosfet.
 Source of Supporting Mosfet is always Ground.
 Output Coil is used in this circuit to boost switching supply (CPU Core Voltage)
 Output switching supply is filter by output filter Capacitor.
 High Frequency of vice-versa signal provided to Gate of Main and Supporing Mosfet for its function.
 This high frequency signal comes out from VRM Chip.
 As soon as VRM chip receive supply , Oscillator section inside VRM chip is to be ON and oscillate high frequency vice versa signal for Gate of Main and Supporting Mosfet.
 Accoring to high frequency signal , CPU Core Voltage comes out from source of main mosfet and goes to Micro Processor.
 If output CPU Core voltage is more than what ever Micro Processor required then extra voltage is ground by source of supporting mosfet according to circuit.
 Oscillator section is controlled by shut down, enable, soft start signal.
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