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Hi Everyone, I'm looking for suggestions on a driver IC that can deliver 100 mA constant current as an offline LED driver. My application is to build a non-isolated, low-cost 12W LED driver for a smart LED panel light. Ideally, the IC should: Support non-isolated offline topology Deliver constant current output

I am currently developing a 60W (12V/5A) converter using the InnoSwitch4-QR. I have designed and built the circuit by referring to the application design, and I am conducting experiments, but I am experiencing some issues. Based on the current test results, I have confirmed that the desired output appears normally

As the subject says, please add the EF16 core to all the design sheets for the above mentioned LED driver. (So Buck, Buck-Boost, Non-Isolated Flyback etc...). It is so far only available for Buck as far as I can tell, which already happened on my request.

Hi, I am attaching a specification for the BLDC motor controller for transformer cooling application. Please help me by suggesting a solution for the application. My maximum power rating of the motor is 350W. Maximum motor current is 12A, rated is 8A. Input voltage is 170VAC to 280VAC Single phase/Three

Hello, I’m working on a power supply design based on the DER-622 reference circuit using the LinkSwitch-TN2 (LNK3202D). My application is a 2-wire (no neutral) system supplying a load of approximately 20–50W. Recently, both R1 (20kΩ/1206) and VR4 (43 V Zener diode) were damaged (burned) during operation. I understand that

Hi everyone, I'm working on an isolated Flyback converter using the InnoSwitch3-EP (INN3679C). I understand that when using synchronous rectification, the SR FET should be placed in the return path (low side) because the SR driver is referenced to GND. However, for my initial prototype, I'm considering using a Diode

Dear PI team, I am working on a high volume project, and my specification are to build an ultra low cost AC/DC with an ouptut at 3.3V @15mA . Do you have a reference design for ultra low cost AC/DC with an ouptut at 3.3V @15mA max ? Or something

Hi Team, I am currently designing a flyback converter using the InnoSwitch3-EP. According to the design guide, the recommended switching frequency range for Transformer design is between 25 kHz and 95 kHz. I have a question regarding how to correctly enter this parameter in the PI Expert tool. Since the

Hi experts, I would appreciate it if you could provide the SPICE model for the TOP245YN device. I’m currently working on a power supply board that uses this component, and the board is exhibiting some issues that I believe could be better understood and addressed through simulation. Thank you!

Hi, I’m designing an isolated flyback converter and looking for a SPICE model for the InnoSwitch3-EP (INN3679C) to simulate and finalize the design. So far, I’ve only found SIMPLIS models on the Power Integrations website, but I’m running into issues with the demo version — the simulation doesn’t run at

Hello everyone, I'm experiencing issues with an INN3629C-H606 IC. The IC does not switch on at startup, preventing the circuit from functioning. I've checked all components on the PCB, and they are in good condition. After replacing the IC, the circuit starts up correctly, indicating that the original IC is

What is bootstrap circuitry and why is it used in gate drivers?

Hi experts， Do you have the simulation model for 2SC0106T2A1-12? I'm working on a thermal analysis project involving the 2SC0106T2A1-12 driver module and would like to simulate its heat dissipation characteristics under various operating conditions.

Hi, We are using the LNK306DGTL in our project to generate a 5V, 250mA output and using this power to drive relays and microcontroller During prototype testing, we observed audible noise coming from the power circuitry. I’ve attached the schematic for your reference. Could you please review it and let

Row 126 -Idc=1.5a Row 133 -Rdc(100)=29.33m-ohm Row 134 -Ploss both secondary =0.53W BUT!!! Ploss both secondary=1.5^2*0.02933*2=0.132W WHERE IS THE ERROR ?

Hello there, We have been working on TOP267 and designed a 24V/5A SMPS using ETD Core, at load it is tuned to 24VDC at half load it goes down to 22V, and at full load further decreases to 21V. Is there any way we can reduce this difference a drop

Please suggest PnP gate driver board for FF300R07ME4_B11 and FF450R07ME4. The boards should have operating temperature rating from -40 deg. C to +85 Deg. C.

I have used PI Expert online to design using the TNY286PG for an output of 12V, 1A. I am not sure how to send the design file online, but I made some changes of capacitor/resistor values, on the snubbing network input to the Drain. The suggested part numbers for the

hello there, We have been manufacturing 24V/2A SMPS, and we need to add an auto-cut while charging batteries. We are planning to tune the SMPS to 26V and need to add an auto-cut Warm Regards

I am referring to AN82 to design a flyback converter with 15 W output , i have selected TNY286 from the application note, at step7 in the design steps for continuous mode operation (page number 50) i am getting KRP as negative value Is this ok, can i move forward