12V to 70V DC DC Converter Circuit SG3525 900W

41 Comments “12V to 70V DC DC Converter Circuit SG3525 900W”

1. olia 2022/12/22

   Hi .
   Thank you very much for your reply.
   In the pcb, the secondary connections of the 4 cores are connected to Shadaki diodes.
   But your explanation is about how to wind the core of the three connections Ac1, GND, AC2, please guide me.

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   1. gevv Author2022/12/22

      Hi,

      see diagram;

      

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2. olia 2022/12/23

   Hello, thank you very much for your kindness
   Please give me the bobbin filter coil including core diameter, wire thickness and number of coils.
   And what is the function of the romate++ part in the circuit and what voltage is it connected to? Is it disconnected from the battery input voltage or…?
   I am very happy to have found a good friend like you.

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3. olia 2022/12/23

   Hi . What is your suggestion for printing multi-layer pcb board? 3 layers or single layer?

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4. gevv Author2022/12/25

   Hi,

   Filter coil removed from faulty atx power supply. 5v line of the coil is used. 10 turns of 2x 1.5mm wire

   

   

   PCB drawing is single layer. REMOTE connected to the 12v line. Used for standby mode

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5. olia 2022/12/25

   Hi
   The coil filter that I wanted is for the 12v to +70v 0 -70v DC to DC inverter circuit. I think you said another circuit because there is a different board picture.
   Please upload the coil filter of this circuit. How many turns of wire? Wire thickness? The diameter of the nucleus of Troid?
   Thank you

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   1. gevv Author2022/12/26

      I’m talking about the 12V input filter coil.

      Toroid is not used in this circuit. ETD59 core used

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6. olia 2022/12/26

   Hi
   In your circuit, an ETD59 transformer is used for voltage conversion and a bobbin filter, and you have already loaded the winding of the transformer, and now I wanted the coil of the bobbin filter that is installed above the 100 MF capacitor of the IC Generator SG3525.
   Thank you

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   1. gevv Author2022/12/26

      installed above the 100 MF capacitor of the IC Generator SG3525.

      10 turns of 2x 1.5mm wire

      

      

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7. olia 2023/02/21

   hi
   Please ask me the inductance data and the test conditions of the etd59 transformer without the inverter circuit
   thank you

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8. olia 2023/03/15

   Hello .
   A workshop wants to wire the transformer for me and needs this information from me for testing
   I have a problem with the transformer, please help?
   Please ask me the inductance data and the test conditions of the etd59 transformer without the inverter circuit
   thank you

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9. Imran 2023/12/24

   Hi
   Only PCB layout files. Where is Schematic. Please share

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10. Imran 2023/12/24

    Hi
    Please share sche​mat​ic

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