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I have been creating chargers for many years. I use TOP250 microcircuit. The power of my chargers is up to 210 watts. I use my unique charging method (algorithm) for lead-acid batteries. Therefore, I need to very precisely control the output voltage of the charger. About 150-200 times per second

Hi to all, I'm testing a power supply with PFC pre-regulator, that mantain the DC-bus at 400 V. The output are a 24V, 1.8 A and a 15V, 0.5 A. I'm not using a SR rectifier, but a SIC diode on the 24 V output.. All seems okay, except for

How can I fix my car's loss of power?

Hi good morning, I am working on power supply design using TOP267KG-TL. Inputs: 19.2Vdc - 264Vdc Output: 12V, 5W. 12V is converted again to 5V. Question 1) When I am giving input 14Vdc then converter is going in auto restart mode. When I am making input voltage jump from 14V

I'm asking because I'm testing this gate driver with an Eupec/Infineon FZ1200R33KF2C (I know there's a gate-drive module specifically made for this IGBT, but it is too expensive for my application). My application is pulsed power, and I'm getting very fast spikes in the gate line at turn-off, and others

Hi I noticed in the DER538, details about the conducted EMC scans. On page 41, the setup shows a small green wire coming to the LISN. Please advise what is this? Is it the earth bonding? We thought that had to be done with a short thick connection? Also, in

To whom it may concern, We develop AC-DC power supplies. We are testing by applying your gate driver. The product specifications are as follows. INPUT : 400VAC Topology: Full Bridge IGBT : FF200R12KT4 IGBT RMS CURRENT : 100A You are setting up Desaturation functionality and to achieve Ref. voltage 9.3V

Hello Everyone, I am making a 85-265V AC universal power supply with 30V 1.8A output using INN3168C-H101. I encountered a problem during the tests, sometimes when I power the device, the 47R fwd resistor burns and the INN3168C gets damaged. However, if the device manages to start properly, it can

Hello Community, we have a power supply 5V 1,5A with INN3672. It is working with no load up to 10 mA normally and above 20 mA up to maximum of 1,5A as well. But between 10 an 20 mA load it keeps restarting. Do you have an Idea what could

Hi, I would like to design Flyback with Inno Switch. Output power is 5W (15V) and Input is 100-300VDC. For a Flyback design, we consider Dmax=0.45 @ Min input voltage and full load and proceed to find Magnetizing Inductance and further transformer design. But, When I entered in the tool

Hi, We have designed SMPS 24V/3.5A, Input range 180V to 265V AC 50Hz, Input cap 100uF/450V Device used INN-3670C, observed that during Vin=180V, Output current= 3.0A worked for 15min & Rfwd resistor 47E(250mW) is failed. However SMPS withstood (On for 3hrs) for same load when Vin=240V. regards Sreenivasan. M

Hi Experts, Good day! I'm having some difficulties. 1.What does this detector module do? 2.Where did this INH signal come from? What is the role? 3.Is this control module a digital module? Can I understand that inside is a circuit similar to a NAD/OR gate? Thanks!

Hi Experts, Could you please explain what this means? Is Ton plus Toff equal to one cycle? For example, if one cycle is 30 µs and Ton is 20 µs, then is Toff equal to 10 µs?"

Hi, I am trying to implement the reference design RDR 838 which gives multiple output voltages. How will be able to trigger these different voltages at the output?

Hi Experts, Do you have SIMPLIS Modle for Tinyswitch-4？I am working on a project and need this model for simulation verification. Could you please provide the model? Thanks！

I have design based on der-960 with INN4377. In load below ~4A(20v) power supply work stable without any noise. But after some threshold when I try rich 5A(20v) it jump to higher frequency instantly and I can see SOA protection(I assume it) on main switching. It's create a lot of

Hi Experts, We are using LNK623DG for our 5V, 900mA (4.5W) SMPS. We are using the following designs for last couple of years and shipped more than 70K units so far without problem so we believe no problem with design (schematic attached). However in recent production lot we are facing

Hi Colleagues. As seen in the DER-717, PI Expert and other sources, the ferrite core can be used as shielding, by connecting the wire to high voltage ground. Some cores have this option (like RM cores with), some didnt. And now the question. How to connect the ferrite core with

We designed a power supply using Innoswitch 3 EP family INN3670C. Output specs are 24V 3.5A. we are facing issues in the design like some of the boards primary pulse are coming bunch pulses and we tried making trial boards and some boards only the IC blasted. How can we

We design a smps having 4.5W ,Input DC 19.2-373DC.For that we used a Transformer EE20 core size. When the Input is low voltage 19.2 ,Frequency is 132kHZ and working is CCM mode. When the Input is high voltage 373 ,Frequency is 40kHZ and working is DCM mode for design of