Fig 86 corrected ver2

♦ Output Short−circuit protection: if the ZCD pin voltage remains low for a 90−ms time interval, the controller detects that the output or the ZCD pin is grounded and hence,

If this thermal foldback cannot prevent the temperature from rising (testified by V SD drop below V OTP ), the circuit latches off (NCL30188A) or enters auto−recovery mode

If this thermal foldback cannot prevent the temperature from rising (testified by V SD drop below V OTP ), the circuit latches off (A version) or enters auto−recovery mode (B

• Primary Side Constant Current Control: thanks to a proprietary circuit, the controller is able to take into account the effect of the leakage inductance of the transformer and

• Primary Side Constant Current Control: thanks to a proprietary circuit, the controller is able to take into account the effect of the leakage inductance of the transformer and

• Primary Side Constant Current Control: thanks to a proprietary circuit, the controller is able to take into account the effect of the leakage inductance of the transformer and

When a dimmer is detected on the AC input, an internal voltage reference of the current regulation loop adjusts the current level based on the dimmer conduction angle so the

In the design example for this demo board, the PFC output bulk voltage is 10 times the output voltage (or V f ) due to the transformer turns ratio (5:1) and the fact that the