Timeline for Using one Mosfet to control the gate pin of another Mosfet
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 9, 2020 at 2:11 | comment | added | Freeman | @Ocanath You got it: that is the supply voltage, not the input voltage. According to the datasheet, the electrical characterization was done with a supply voltage of VDD from 4.5 to 18V. The absolute maximum supply voltage is 22V. The maximum input voltage (to the buffer/inverter) is VDD+0.3V or GND-5V... which means 22.3V or -5V. | |
| May 8, 2020 at 14:01 | comment | added | jwd0015 | @Ocanath The arduino is able to provide full brightness with a 5V pin output. | |
| May 8, 2020 at 14:00 | comment | added | jwd0015 | @alanwaring I notice that the TC4427 has an operating range from 4.5 to 18V, does that mean it needs at least 4.5V from the microcontroller or is that just what I need to provide power to the TC4427? | |
| May 7, 2020 at 23:55 | comment | added | Ocanath | @alanwaring's recommendation seems solid to me, I second it | |
| May 7, 2020 at 21:22 | comment | added | Freeman | @jwd0015 The TC4427 comes in inverting and non-inverting versions, comes in DIP8 too. microchip.com/wwwproducts/en/TC4427 ... you also don't need the pull-down on the gate to discharge cap since that's built in. nice clean edges, especially on big power n-fets like IR630s. | |
| May 7, 2020 at 20:31 | comment | added | Ocanath | This is a shopping question and technically off topic. It's hard to pick one that won't work though, so don't sweat your decision too much. Also, I wouldn't completely rule out the possibility that your circuit isn't working because of some other mistake you've made. You might want to try using another microcontroller (such as an arduino if you have one lying around), and verify that you're really toggling your Raspberry Pi GPIO pins correctly | |
| May 7, 2020 at 20:20 | comment | added | jwd0015 | Any particular driver for this type Mosfet? | |
| May 7, 2020 at 19:09 | history | answered | Ocanath | CC BY-SA 4.0 |