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Forum Index : Microcontroller and PC projects : A 4-channel MOSFET PCB
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| lizby Guru  Joined: 17/05/2016 Location: United StatesPosts: 3481 |
Should anyone have a use.  (12V LEDs and IRL540 MOSFETs)  Gerbers: MOSFETx4_2022-06-12.zip PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 8304 |
That's neat. :) If I were to have any niggle it's that a couple of fixing holes would have been useful, even if the board had to be a little bit bigger. You could probably get them in on opposite diagonals anyway. I'm not sure what distance you have between the mosfets, but I suspect those tabs are connected to Drain. You need to be a little careful that they don't short together. Otherwise, I like it. :) Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| lizby Guru Joined: 17/05/2016 Location: United StatesPosts: 3481 |
Thanks. Mounting holes will be good when I figure out where and how I'm going to mount it. I would have thought the tabs were connected to source. I'll check. PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed |
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| pwillard Guru Joined: 07/06/2022 Location: United StatesPosts: 324 |
On TO-220 cases... the center PIN is attached to the metal TAB. |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 8304 |
I've been having a search... What the tab is connected to seems to be secret. lol No mention on the Vishay Siliconix, Fairchild or International Rectifier data sheets, but Infineon say it's connected to Drain. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| lizby Guru Joined: 17/05/2016 Location: United StatesPosts: 3481 |
+ and + Infineon On my Chinese IRL540s, center pin (drain) is connected to the tab. So Mick's advice about spacing is appropriate. ~ Edited 2022-07-08 02:22 by lizby PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed |
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| pwillard Guru Joined: 07/06/2022 Location: United StatesPosts: 324 |
It comes down to the mechanicals of the PART and the way the DIE gets manufactured.  |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 8304 |
ooh! That's nice! :) Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| Tinine Guru Joined: 30/03/2016 Location: United KingdomPosts: 1646 |
A bunch of these high-siders just showed up from Aliexpress....might be a white-smoke weekend   Craig |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 8304 |
I keep telling people that smoking is bad for them (and their components). :) Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| Tinine Guru Joined: 30/03/2016 Location: United KingdomPosts: 1646 |
Or this:  |
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| Tinine Guru Joined: 30/03/2016 Location: United KingdomPosts: 1646 |
Some smoke to get high. My high-side-driver might get me smoke |
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| lizby Guru Joined: 17/05/2016 Location: United StatesPosts: 3481 |
Just found a bag of FQP27P06 this morning. May have to try this. PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed |
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| Tinine Guru Joined: 30/03/2016 Location: United KingdomPosts: 1646 |
Cool...are yours real? Mine were ridiculously inexpensive that I'm not expecting much success |
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| lizby Guru Joined: 17/05/2016 Location: United StatesPosts: 3481 |
My notes say I bought them in 2015, so its possible they're real, but I doubt I have any way to test them at close to rated capacity, or if I did, to measure what the actual current was. PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed |
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