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Hi, I designed a new SMPS as described in attached PiExpert report, with minor changes. Changes: used SF38G instead of SF35G, C3 has a voltage rating of 1600V, instead of R9 and R10 I used a potentiometer, that was preset to right voltage before startup of power source. This circuit

Dear Power Integration Team, We have developed an isolated battery charging circuit using IC INN3949CQ (H code 907) to charge the Li-ion battery of 48V, 2.9AH at 0.5A. Regarding this, it was already supported to design it (with it output voltage limitation of 27V max, but by an extra winding

Hi, We want to do an innoswitch flyback for 60W (VAC = 85-265VAC, 50-60Hz) , but for operation in compliance with EN62368 and at altitude of 4580 metres. As such the isolation voltage between primary and secondary is more than the standard 3kVrms. The adjustment factor from page 88 of

I made Pcb circuit of SMPS using TNY286DG-TL which convert universal input (90-250VAc ) to 5V 1.5 I designed a PCB circuit for an SMPS using TNY286DG-TL, which converts universal input (90-250VAC) to 5V at 1.5 amperes. I took help from the PI expert Software. Here is the Design PI

We have an industrial controller used in Solar application. It has two inputs for power supply: 1) R Phase of Grid (R-N nominal 240VAC, 50Hz): Wide variation in input, upto +/-30% change, with 45-55Hz 2) 48VDC (Variation from 40-60VDC) We want to generate 2 output voltages from the SMSP power

Hallo, I have designed Buck converter with Vin=(85-265)VAC, to get Vout=12VDC, Iout=360mA(CCM) using LNK3206P. Kindly support us to know : 1- Are the selected components suitable for the design? 2- Is this power supply have the ability to provide 360mA without any issues?? 3- 3- Will the output voltage be

Hi All I was looking at the app note (again), but the TinySwitch-iii is no longer available. Can you simply replace the chip with a TinySwitch TNY290P ? Thanks Simon

Hi all, I’m designing a ~3 W, 12 V non-isolated buck converter using the LinkSwitch-TN2 family (e.g. LNK3205). My input is universal AC (85–265 VAC). I found the Power Integrations reference design RDR-721 (2.75 W, 5 V output) which covers 85–265 VAC and uses a LinkSwitch-TN2 device — screenshot attached

Hello, We designed SMPS using PI Expert online tool as per the following: Input: 70V DC to 125V DC Output1: +5V 600mA Output2: -5V 500mA Output3: +5V 300mA We built prototypes as per the design. When we power up the prototype, it doesn't start. Can you please help? With regards

Hello, We designed SMPS using PI Expert online tool as per the following: Input: 70V DC to 125V DC Output1: +15V 400mA Output2: -15V 400mA We built prototypes as per the design. When we power up the prototype, it doesn't start. Can you please help? With regards, Vijay Limaye

Hi, I have been asked to perform a failure analysis on an AC/DC power supply design utilizing the TNY275 (TinySwitch-III family). This is a legacy product (5–6 years old) that has recently experienced failures across multiple, separate field locations. The product operated reliably for several years prior, and no other

i start new air fryer project and i need to design buck converter with output voltage is 12vdc and output current 0.5A, Kindly help me to choose suitable IC (with more stable operation ) to use in my project

Dear PI Team, We have been using the TOP249 for more than 20 years. Its main advantage was the ability to operate down to below 18 V, which perfectly suited our application requiring an input voltage range of 18–36 V DC or 90–230 V AC. Since we’ve been very satisfied

Hello all, It's been a while since I did a PI design (or any other that would require custom magnetics). I still wake up at night recollecting last time, as I nearly got scammed for a substantial amount. I'm aware there's a "component supplier" section, but some of those links

I have created the design and want to optimize it but the button "start optimization" is grey and not clickable. In tutorial videos optimization panel appears right after creating the design. Also, I can't see the value of efficiency in the design evaluation section. It only shows on graph but

Hi, Please could you link in any questions people sent about Hiper-LCS2 on this forum?....i couldnt find any. Please could you also give an idea of how many Hiper-LCS2 based power supplies are in use over the world today? Specifically with LSR2000C-H001 and LCS7265Z, LCS7268Z and LCS7269Z?

Hi, Why is there almost no stock anywhere worldwide for the following...? LCS7265Z....none in the world LCS7268Z...none in the world LCS7269Z...none in the world LSR2000C-H001....none in the world, apart from 2000 from Thailand on 12 wks and non RoHs compliant.

Hello All, I have an Edwards nXDS pump controller. There is an onboard SMPS based on the TOP258GN switch. Due to a power surge, TOP258GN was burnt out. I replaced this switch and two more doubtful components: a 2M ohm resistor connected to the monitor pin and a 47 μF

Hi When the following power supply of the following DER suffers sudden full-load-to-no-load transient, to how high does the output voltage then go up to transiently? Also, Please can you answer this for all the DER reports of Hiper-LCS2? https://www.power.com/sites/default/files/documents/der-978_720w_dc-dc_llc_resonant_half-bridge_sr_hiperlcs-2_20250327.pdf?language=en Also, supposing that the amount of output capacitance is so

Hello everyone, I am trying to repair a small control board from a consumer electronic device - Sonic Relief Ultrasound where the main power supply chip has visibly failed and is burnt. I need help confirming the part number and finding a reliable replacement, as the original markings are damaged