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Hi i have designed a flyback converter using TNY278 controller. input voltage 230v and output spec is 12v / 1A. in no load condition there is a little audible noise that can be neglected but when the load is added to the output the frequency and volume of the noise

Hello everyone , i know this might sound stupid question but please go easy on me , as i have already developed CV power supply of 12 V 6 amp using LNK6666E which is working very fine but now i need to develop a battery charger of 4-5 amp for

Dear, Anyone can share me the Part number cross reference guide and also share the Design Document for this IC. - SC1161D2-TL LINK-III SO8. Best Regards, Karthick

Hi, i made a 10w circuit using lnk6666e and its working fine except one thing if i use feedback resistor 39k than input lower cut off is 60V and higher cutoff is 290v and if i use 68k than AC low cutoff is 120V but high cut is not working

Hi Friends, I have designed 32V 7A SMPS using with Pıexpert. According to PIExpert, the transformer's leakage inductance should be 3.5uH, but I measure 7uH in the transformer I designed. 1. Is this a big problem for transformer design? 2. Will this problem prevent the circuit from working? 3.What kind

Hello, I am designing power supply with TNY284P, and I would like to calculate MTBF according to MIL-HDBK-217F. I can measure voltage/current/temperature, but I don't know which parameter I should use. Please let me know how to proceed the prediction. Thank you.

My english is not good but I hope everyone can understand and help me explain the problem. Thank you very much! I am learning the TOPSwitch-Jx IC family to design an SMSP . When reading the datasheet about the soft start part, there is a problem I do not understand

Hi Sir: 1\As the note in datasheet, "When the duty cycle exceeds DCMAX the LinkSwitch-CV operates in on-time extension mode." , what would the switching frequency be in on time extension mode? 2\we found the switching frequency is around 80khz, far below 100khz when duty cycle didn't exceed DCMAX, do

Hi I am trying to reduce the component cost of the 12V supply that is used for a PFC 24V AC-DC converter. Currently my design uses the LinkSwitch circuit similar to RDR-506 (TN2 LNK3204D/P/G) as an auxilary 12V supply for the PFC. What less expensive alternatives do you suggest? Thank

Hi. I`m the student developer who is frequently using your product. While Using Pi Expert Online, Part MCU raise my curiosity. If MCU is not specified, than I can use any microcontroller including USB HUB? The schematics your company provide uses vp302 but no VP302 datasheet is found in the