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Hi All, I have designed a power supply using a TOP244 + Myrra 74030 transformer (see .pdf schematic attached). The issue is when I connect some load on the 12Vdc (less than 100mA), the voltage fall down to 7Vdc. (When no load connected, I have 12.32Vdc) Can you please help

Hello, I am trying to design a circuit using the LYTSwitch5. We almost exclusively use EF16 inductor cores, however this selection is not available in the design tool, making it difficult for me to use the tool to calculate the number of primary and secondary windings required for my purposes

In the datasheet for the LNK6663K, there are are two statements that I find conflicting. On page 3, the description for the source pin says: SOURCE (S) Pin: This pin is the power MOSFET source connection. It is also the ground reference for the BYPASS, FEEDBACK, PROGRAM and COMPENSATION pins

I have made the attached design in PI Expert online. The TVS in the RCD + Z snubber was chosen by PI Expert as a bidirectional TVS, is this correct? In the schematic VR1 is shown as a unidirectional. What is the correct type TVS to choose?

The application note says NC PIN must open This mean is NC PIN is floating or connect to GND?

Hi Im making 20W adapter with flyback topology with out PD controller The schematic select N-channel Mosfet for SR switch but can i use GaN fet beside the N channel fet? i

I'm designing my first circuit with the LinkSwitch-TN2, in buck and MDCM configuration, for a line-connected AC/DC application. I have read through the data sheet and app notes AN-70 and RDR-721. I've selected the LNK3205 based on maximum current consumption requirements, up to ~ 150mA with everything turned on. I

Hi , I am missing detailed calculation of Advanced Active Clamping feature. On page 14 of 2SC0535T_Manual, it is stated that when "voltage on the right of the 20R resistor in Fig. 7 exceeds about 1.3V, the turn-off mosfet is progressively switched off". Since ACLx pin elecgtrical characteristics and behaviour

Good morning, I am looking for information on the DER-950 project (photo attached). Does anyone have any documents on this subject? Apart from the photo, I have not been able to find anything else. Maybe I am looking in the wrong place? Best Regards, Artur

I read in another forum post that PI chips often use date codes in the form A000, where the initial letter indicates manufacturing location, and the second character (first digit) tells the year, and the final two digits tell the week. But how does that one year digit distinguish between

Hi, My questions are pertaining to innoswitch 4 CZ family. Can innoswitch4 CZ series be used without clampZero? Can I ground the HSD pin and use CZ controller? How to use innoswitch 4 CZ controller without any delay between secondary request and primary switching? what is the range of switching

Hi Im trying to make 20W adapter without pd controller (220rms -> 5V4A) the ic controller INN3278C can make 4A in output? and the limit current function can make with bypass cap how can i caculate this cap?

Hi, My question is on Magnetics design. The application is a high VDC 20W flyback converter. I'm modifying the inductor of my current stackFET prototype I used PIXIs for inductor design (attaching the design result) Full-load operation: With this inductor, I observed controller hits ILIM fault at VDC>700V (Ipri>ILIM). Q1

Hi Experts , Can you please check and confirm the marking differences are consistent ? We noticed some marking changes in the bottom unit of the part. Pls advise the PCN behind these changes . Regards Manoj Balakrishnan

Hi team, Is max power capability (and hence the offered PDOs etc) the only difference between H803 and H801 variants of INN3879C? The datasheet lists, on page 1, different output power values depending on the requirement. But all values in the row of INN3879C are above 45W (that of H803

Hello! I am wondering if there is any of the pins of the device that we could implement a circuit with a photocell and a Mosfet to allow the circuit to be turned off during the day, and allow it to remain on at night? Or would I have to

Hello, I am designing a power supply circuit using INN3870C. I've built some prototypes and am running into EMI issues. When measuring radiated noise, there are large individual differences in the noise level around 140MHz to 190MHz. I think the reason for the variation is that there is a large

Hi. My customer wants to use InnoSW-4 and Clampzero for DC input votlage. Is it possible to use InnoSW-4 for DC input voltage? What are the possible problems? Their request is as below Vin = 36 to 57VDC Vout = 12V, 6A

Hi, Could you tell me if HyperPFS-5 supports flow soldering? My customer often uses single-sided boards, so they use flow soldering. Is there any problem with flow soldering?

Hello, Greetings, I want to run simulation on INNOswitch flyback in LTspice/SIMetrix-SIMPLIS for loss analysis and efficiency improvement. Kindly share me spice model for part of INN3947CQ or let me know where can I find. Thanks and Regards,