UroBoros
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Re: Viper22 based SMPS circuit and design Tools
This sis a viper22 based application note circuit I am trying to make.
On power up nothing happens- luckily nothing burns at least visually.
The chip seems not oscillating. no voltage except 300VDC across drain and source. Some 2.5 volts is shown at Viper22 VCC pin.
I wound the transformer following the dot rule.(I believe it is correct). tried by exchanging connections of transformer.
Please suggest how should I zoom into the problem. I have a multimeter, and a PC based DSO. Will arrange an isolation transformer also.
Please
This sis a viper22 based application note circuit I am trying to make.
On power up nothing happens- luckily nothing burns at least visually.
The chip seems not oscillating. no voltage except 300VDC across drain and source. Some 2.5 volts is shown at Viper22 VCC pin.
I wound the transformer following the dot rule.(I believe it is correct). tried by exchanging connections of transformer.
Please suggest how should I zoom into the problem. I have a multimeter, and a PC based DSO. Will arrange an isolation transformer also.
Please
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