PI Forums

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,

I was referring to DER-712 and have questions regarding its operation I saw the switching wfms given in the document, what determines the voltage distribution between Q3 and innoswitch MOSFET? the document says "the voltage across the internal MOSFET of INN3679C IC however will be limited by the TVSClamp VR2"

I am designing a 20W LED driver based on lyt1604 and following AN-67. I constructed the AC-DC and DC-DC side separately on a DOT board. I did this for both hide side and low side topologies. DC - Dc side was tested with 60V Dc power supply and worked well

Hello, I am designing circuit usink LNK 305. I follow manual and i am wondering why are two diodes used for half wave rectifier. Can i use only one top diode for rectifier or i need second one on bottom? I need MCU on mains potential referenced to neutral

Hi I am trying to design a buck converter which operates from 60V to 550V with output of 5V and 200mA load current.I have few questions while referring the availabe documentation with the LNK3206GQ: Some documents site to a minimum input voltage of 30V , is it possible to reduce

Hi, I'm trying to design a laboratory power supply that can generate an output voltage between 0 and 30VDC and max 5A. Which AC/DC converter could you recommend for this application? Keep in mind that I will only use the AC/DC converter to generate the output voltage of the power

hello? I am using TNY278PN, but TOPIC is damaged in the device. Can I find out what causes burnout? We will upload the circuit diagram. Please give your opinion on which part is the problem. INPUT : AC220V Output : DC12V 0.1A, DC24V 0.4A Thank you!

Hello, I'm interested whether it is common for the 2SC0435T driver to fail (blow up) if a short circuit occurs between the IGBT gate and collector. This short circuit is a result of the blown IGBT. I am questioning because we were previously using the IHD660NC1(obsolete) and it survived under

Hi All , I am Using LNK3206D-TL in my design with 5V Output.Please review the design and suggest any improvements related to EMI/EMC Standards . PFA image in the below file. Kindly do the needful

i am using INN3670 for 24/3.2A, 85W pl suggest how to achieve Soft Finish during Start up, earlier we use to connect a Elec Cap of 47uF -100uF across opto coupler Anode & Cathode. regards M.Sreenivasan