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Q&A

Posts tagged MOSFET

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66%
+2 −0
Q&A What is the difference between rise/fall time and Turn-On/off Delay Time?

Hi guys so recently i was looking for a mosfet and a gate drivers and between a lot of their specification the rise/fall time and Turn-On/off Delay Time sometime it called propagation. My question...

2 answers  ·  posted 13d ago by Freewell‭  ·  last activity 4d ago by TonyStewart‭

80%
+6 −0
Q&A DAC controlled high side current source.

I'm designing a high side current source that can be controlled with a Digital-to-analog and can source up to 100mA with voltage supply up to 36V. By high side I mean one side of load will be alwa...

1 answer  ·  posted 9mo ago by DeadMouse‭  ·  last activity 7mo ago by Olin Lathrop‭

71%
+3 −0
Q&A Case temperature of MOSFET

Homework problem A MOSFET has a power dissipation of $P_{d} = 10\text{W}$. The MOSFET is mounted on a heatsink. There is an isolation pad between the MOSFET case and the heatsink. We are given t...

1 answer  ·  posted 9mo ago by Carl‭  ·  edited 9mo ago by Olin Lathrop‭

Question MOSFET power thermal
75%
+4 −0
Q&A Why are there more N type than P type MOSFETs?

I was looking at different transistors, especially MOSFETS and I saw that N type MOSFETs seem to be way more popular to be used in circuit design. Is there a reason for that, or am I mistaken?

2 answers  ·  posted 10mo ago by crusadEEr‭  ·  last activity 10mo ago by Olin Lathrop‭

Question MOSFET
81%
+7 −0
Q&A Low-frequency PWM-controlled Mosfet heater circuit

The circuit above is used to control a 240W ceramic heater by means of a PWM signal at 30Hz, generated by a microcontroller, with 5V logic. The input is a standard 280W AC-DC external power adapt...

2 answers  ·  posted 1y ago by francesco‭  ·  last activity 1y ago by Pete W‭

50%
+1 −1
Q&A MOSFET not turning completely off

Hello everyone, I have a simple circuit in which I control some LEDs via an MCU and DMG2302UK ( N-channel MOSFET ) The EN pin is connected to an MCU gpio pin that works at 3.3V. The circuit wo...

1 answer  ·  posted 1y ago by AhmedMobarez‭  ·  last activity 1y ago by Olin Lathrop‭

Question MOSFET
66%
+2 −0
Q&A MOSFET differential to single ended converter intuition

How does the differential to single ended converter work? In order for the circuit to work, Q1 and Q3 must be in the saturation region and depending on the voltage inputs, one of Q2 and Q4 will be...

1 answer  ·  posted 1y ago by MissMulan‭  ·  edited 1y ago by Peter Mortensen‭

71%
+3 −0
Q&A Battery voltage: to boost or to connect in series.

Background. I have a legacy battery system that is comprised of twenty-four 12V Li-ion battery modules (self-protected), enclosed in a shell with the charging connection provided as a common groun...

1 answer  ·  posted 1y ago by DSI‭  ·  last activity 1y ago by Olin Lathrop‭

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+1 −1
Q&A High Power Switch - High Side vs. Low Side Switching

Imagine a battery pack with &lt;=60VDC of maximum voltage and a load of up to 10kW of power(the PMSM inverter with the input capacitance of up to 1mF). The load is not always known - could be 100uF...

2 answers  ·  posted 2y ago by 2kind‭  ·  last activity 2y ago by Olin Lathrop‭

Question MOSFET switching
71%
+3 −0
Q&A Why there is a body diode in mosfets?

In theory (I mean in my engineering curriculum) I never found a diode in a mosfet symbol but in datasheets there is a diode called as body diode in both pmos and nmos.Please explain its significan...

3 answers  ·  posted 2y ago by aditya98‭  ·  last activity 2y ago by Nick Alexeev‭

Question MOSFET body-diode
60%
+1 −0
Q&A How to define Vsat for MOSFET as a switch?

I was looking at this design: It uses MC34063 as switching controller. I wanted to adapt this circuit, and I was busy trying to pick R1 value. The datasheet has following formulas: The issue I hav...

2 answers  ·  posted 2y ago by Kranulis‭  ·  last activity 2y ago by Andy aka‭

66%
+2 −0
Q&A How to avoid shoot-through in MOSFET bridge drivers

I'm using a variable duty cycle square-wave oscillator to drive a half-bridge MOSFET pair like this. Upper MOSFET is P-channel type, lower MOSFET is N-channel type: - And, I think I'm getting shoo...

1 answer  ·  posted 2y ago by Andy aka‭  ·  last activity 2y ago by Andy aka‭