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Hi Power Integrations Support Team, I have designed battery charger circuit based on TNY268PN to charge 12V 2.2Ah Sealed Lead Acid Battery. I attached the circuit schematic to this thread. The schematic is based on the circuit given in TNY268PN datasheet (Datasheet Figure 14 2.5W CV CC Battery charger schematic)

We are using LNK6666E in our product from more than 2 years and no issues till date. Suddenly more than 15 units failed after few hours of running. BP pin to Source pin short. Any possible reasons why sudden issue? I have attached the part marking photo. Is this genuine

Hello Team, I am using LNK3209 to convert from 24Vac to 3.3Vdc. I am driving load upto 500mA. Can you please help me to understand why there is auto restart? I have attached waveforms for your reference. Thanks Sunil

I'm encountering a design issue with my switch-mode power supply that utilizes the InnoSwitch3-EP (INN3678C). The SMPS powers up and outputs the required V when the input voltage is 133VAC or higher, under full load conditions (drawing 3A), but I'm facing problems when trying to achieve reliable operation within a

Myself Sijulal George working at R&D division of an international compony were design and manufacturing services are done for world wide location for the past 20+ years. I have been also used several PI products for developing and production transfer of power supply for various customers like Hitachi Japan, GE

Hi, I have seen the der-622 and der-832. Both of these use a non-isolated flyback topology. I want to know how about the buck topology. If it is possible, can you suggest me an example? I want to design an AC/DC power supply with 5V and 400mA output capabilities. Also

Hello, We are working with the eval board of RDR-747. - At no load it gives expected 20V output.From there after, gradually increasing the load upto full load works fine. - Then while powering it up at Light Load(or any load) it gives 0V output. - Again powering it back

Hi, Would you agree, if doing an offline isolated flyback of 90-265vac, then the minimum number of net class's that you can get away with , when laying out the PCB, is ten? The net class's are necessary, ayk, so that you can get the correct clearancing between the various

Hi. My application requires I have two 25V supplies in one enclosure, and that they are isolated from the chassis (they will be connected to produce + and - 25V reference to the common connection point). Max output current is 0.5A from each supply which I test into a resistive

QR code marking on gatedriver has changed content, was 10 digits, is mixed digits and chars, what is reason for this, has product changed? E.g : Is now L231800TFZ Was: 0129598878 BR Carsten