Power Forum Discussions

Dear team

Please let me know two points about the Vgs notes in the data sheet of "IMW120R007M1H".

①　What is the intention of performing the operation "(tested after 1ms pulse at Vgs=20V)"?

②　Is it okay to ignore this operation when running the simulation?

Best Regards,

Tomato

I'm looking for a driver for a dual coil latching relay, something to drive a coil with 5V and 40 mA.  I believe my math shows that a low side or a high side driver won't work.  I believe I need something with a push/pull configuration.  Any ideas are welcome.

The problem appears to be an onboard MOSFET with no markings and not powering a 1500w motor at 240V in a Vacmaster Vacuum cleaner. I only have basic knowledge so the identification of MOSFET has come from someone else. The picture explains what I have found out when the board is live at 240V. I am reasonably sure the MOSFET is broken as I accidentally shorted two of the pins with my meter and scared the living daylights out of myself as the motor burst into life. 

As there are no markings, I am going to have to make an educated guess on replacing it so need to know the variables. The obvious ones are 240V and a minimum 6.25 A continuous load. Do I upgrade amps to take care of start up load? RDS has been suggested as 0.005  or less is that correct?

Finding places to buy low-quantity items has also been a challenge any suggestions please?  If anyone has a part number, that would make you my favourite person of the year. 

Anything you can do to help will be greatly appreciated.

Hi Team,

Please confirm whether the land pattern(PG-TDSON-8) in the datasheet or on the website is correct for this part BSC096N10LS5ATMA1.

Hello. I am currently designing a custom PCB based of the WLC1115 reference schematic. Looking at the BOM, I am noticing a lot of 0603 components. I am wondering if some of these components can be replaced with 0402? Also, I noticed in the design guidelines document that a buck switching frequency of 600kHz is possible. I am also looking to replace the 6.8uH inductor with a smaller one. How is the frequency of the buck stage set? Has anyone tried using a smaller inductor?

Hello. I am wondering if it is possible to configure the WLC1115 to utilize only legacy mode? I am looking to be able to charge a device from a legacy USB-A port. I found the "legacyChargingTable" in main.c and set .enable=1. After flashing my dev board, there is no voltage to the coil. 

IPD11DP10NMATMA1のバッテリー充放電のロードスイッチとして使用します。

以下写真のような回路です。

ここで、バッテリー未接続で、M2の出力端子とGNDを短絡させる試験をします。

Coutから放電される突入電流に上記FETが故障せず耐えられるか知りたいです。

以下写真はｺﾝﾃﾞﾝｻの放電シミュレーション波形です。

Ronが上記FETのON抵抗です。

CoutのESRが不明で、0.5~1Ωの間になると思われます。

0.5Ωの場合FETのピークの88Aを超えるため故障するのではと思っています。

放電の突入電流が、FETの定格以内か判断する計算方法を教えてください。