Part Number: TIDA-01385
the Startup of the circuit at low CT output current (e.g. 50mA) is not successful. Below is the waveforms of TL431, the 1mF capacitor voltage and the boost output voltage (set point at 3.3V). as can be seen TL431 has not reached its 2.5V expected output.
However, It works well for high currents like 1A.
I tied to leave the simulation for a longer time but I get the following result:
Is there some way to overcome this problem please?
when you said 50mA. is this the current out the CT and ffowing into the TIDA-01385? could you share your TINA model.
Best RegardsJasper LiBoost Converter Solution
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In reply to Jasper Li:
exactly. this is the current out of the CT flowing into the diode bridge. it is 50mA peak.
However, there are some changes that I have made to TIDA01385. Only the 1mF capacitor is used (no supercap and no load switch). The boost is TPS61022 and set at 3.3V output.
May I send you the model at an email address please?
In reply to Amr Elhadidy:
just send you friend request. you could send me a message.
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