Questions tagged [low-side]
The low-side tag has no summary.
53 questions
7 votes
3 answers
907 views
Why are p-type MOSFETs used for high-side switching while n-type are used for low side? TO-220 package seems backwards
Disclaimer: Sorry for my ignorance - I'm a computer scientist but not an electrical engineer. It seems at first glance that this designation should be the other way around. N-type MOSFETs have the ...
4 votes
6 answers
437 views
Gate drive for a low side N-MOS switch with wide input voltage range
I have a power on/off switch circuit with an N-MOS as a low side switch. I need an isolated gate drive for the N-MOS. The plan was to use an optically isolated gate driver chip. The gate drive supply ...
- 51
1 vote
1 answer
203 views
High Current, High Voltage DC Load Switch using NMOSFETs
I am designing a Power Monitoring and Protection board that is going to sit in between a 5-Series (~70V) Lead Acid Battery and a load. This board has a Energy Monitoring IC from TI - INA237AQDGSRQ1 ...
1 vote
0 answers
67 views
Low-Side Driver Not Sourcing Current from Load to GND
I have a circuit with an electronic load in parallel with an optocoupler and a low-side N-channel MOSFET connected to the circuit. The low-side N-channel MOSFET driver is supposed to source current ...
- 11
1 vote
2 answers
1k views
IRF630N MOSFET burns after a couple of times in use [closed]
I made a simple circuit using an IRF630N to drive my loud buzzer. The Arduino code is very simple, just high and low on the pin for a fraction of time. Following is the schematic of the circuit After ...
- 345
0 votes
3 answers
633 views
NMOS as a low side switch
I am trying to use an NMOS(2N7000BU) to "turn off" the LM350 voltage regulator. I have an OR gate going into the gate of the mosfet, so either input will turn it off. The hope was to ground ...
- 3
0 votes
3 answers
233 views
Power control of IC chips with N-Channel MOSFET
I'm building a battery-based wireless weather monitor for hobby project. for longer battery life, I want to control the power of each subsystem separately. Let's take a NRF24 modem for example: ...
- 43
3 votes
1 answer
395 views
ULN2003 low-side switch electrical characteristics
ULN2003A So I'm currently exploring low side switches. I started off with an NMOS transistor array IC (Open drain), to develop a better understanding I've tried to understand the Darlington transistor ...
- 121