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Dear Tony
The transformer will be as an isolation at high frequency in a DC-DC boost converter. The input voltage to the DC-DC converter is 30 V while the output voltage varies between 40 V and 100 V. The power rating is 300 W. Frequency is 50KHZ
Thank you dear for your reply
If it is not suitable for power transmission, what is it suitable for?. I really don't understand why chokes used for..?
Actually I tried to find a suitable high frequency transformer used for isolation but unfortunately I couldn't. The power rating of the wanted...
I want to build a DC-DC converter with high frequency transformer embedded inside it. The transformer turns ration should be 1:1.
I found a high current chokes used for DC-DC converter. You can see bellow to find the pdf and the website of the choke (part number:C-36A29-06) .It has 4 terminals...
I use LTS 25-NP current sensor to measure ac current grid. I just built it. I tried to calibrate it using simple circuit consists of a single phase source and high power resistor. The current is flowing when I change the source voltage as appearing in the Ammeter but the output voltage from the...
Dear sir
I don't know what do you mean by differential or floating oscopes. But I'm using a normal method using oscope to measure the voltage VGS( or the voltage between the points VS and HO in the driver). IT increases with increasing the duty cycle. Is this because the bootstrap capacitor of...
Dear Sir
I monitor the VGS while the converter is connecting to the supply. With increasing the duty ratio the VGS increases. At a duty cycles closes to 0.5 the VGS equals approximately 30V. Is this logical?!. The max VGS as stated in the datasheet is 20V max.
Dear BradtheRad:
I have noticed...
By the way, the inductor is 1mH with a maximum current of 26A. The current flowing in the inductor at maximum power doesn't exceed 15A. The output capacitor is 330micr F. when the duty ratio is higher than 0.5 I hear a strange sound from the inductor. It takes a little time and the I lost the...
Tank you dear for your replying
Attached to you the schematic diagram. As I discussed above that the driver heated and stop working when the duty ration is 0.5 and higher. This problem appears with or without using optocoupler.
I built a DC-DC buck boost converter. I use IR2184 gate driver to drive IRF3710 MOSFET. I used optocoupler 6n137 past the gate driver for isolation purposes. My problem is that when the duty ratio is less than 0.5 the gate driver signal is so nice and the output voltage is good. But when the...
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