Linked Questions
14 questions linked to/from Bootstrap circuit function
19
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2
answers
47k
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Bootstrap circuit for high-side MOSFET driver
I am very familiar with the operation of bootstrap drivers on MOSFET driver ICs for switching an N-channel high-side MOSFET. The basic operation is covered exhaustively on this site and others.
What ...
- 8,504
4
votes
2
answers
4k
views
Bootstrap capacitor
I am new to electronics
could any one explain to me what is the Bootstrap capacitor and what is used for I am doing research about buck convertor using MP1482 chip
and I do not understand bootstrap ...
- 53
6
votes
2
answers
10k
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Is it possible to use P-MOSFET at the floating high side of a MOSFET driver?
I need to use a MOSFET driver in my circuit. I have read some MOSFET driver datasheets. As far as I have seen, always an N-MOSFET is used at the high side.
For example, consider FAN7842.
Typical ...
- 13.9k
2
votes
2
answers
4k
views
Choose Vcc for MOSFET driving a 48v Motor
The circuit above is used to drive a 48v motor as shown. I am using:
IRF3205 MOSFETs (datasheet)
IR2110 High and Low side driver (datasheet)
22uF bootstrap capacitor for PWM frequency of 30 KHz.
I ...
- 257
0
votes
2
answers
5k
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Buck Converter with Gate Driver
I designed a simple buck converter to meet the following specs (I have attached the schematic):
Vin = 17.4V
Vout = 12V
D = 0.69
Switching Frequency = 50kHz
Inductor Ripple Current = 20% of ...
- 79
1
vote
1
answer
3k
views
IRS2110 IC & high side floating supply voltage - H bridge
Hi So far what all IC or micocontroller that I have used that use to have VDD = 5V & GND = 0V.
Now I am working on an H-bridge circuit using IC driver IRS2110 for motor control.
What exactly we ...
- 201
1
vote
2
answers
2k
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Half H-Bridge Driver
I'm working on a project to control power sideview mirrors in a car, with features like TildDown, that tilts some of the mirror down helping to park. The circuit is pretty simple, but I'm having some ...
- 35
1
vote
1
answer
658
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Boost Capacitor of Step-down converter
I'm working on the LT8607 Step-down converter to convert from 12V to 5V/500mA output.
The circuit schematic is as below.
What is the purpose of using the BST capacitor as shown in the schematic.
1
vote
4
answers
259
views
How to drive high and low side FET with 3.3V microcontroller?
This picture describes the current state of my project that I am working on. I am making a half-bridge high-current motor driver (that will eventually evolve into a full-bridge). The motor is ...
- 21
3
votes
2
answers
292
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How does a bootstrap capacitor for a MOSFET keep the MOSFET on after the source is connected to main power supply?
I was reading this bootstrap circuit for a N CH MOSFETS and I am finally starting to understand how a bootstrap circuit for MOSFETS work. The one part I am confused about is how the MOSFET stays ...
- 1,032
0
votes
0
answers
290
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Can I use a MOSFET driver to blink an LED
I was testing the MOSFET driver LTC7004 and tried to supply power to VCC and GND from an Arduino Mega with a PWM signal. The schematic resembles a Bootstrap circuit. I connected an LED between pins ...
- 352
1
vote
0
answers
275
views
Using 1:1 Transformer for High Side Switching
I'm working on a 2-sw Forward Converter with isolated input and output. The design is complete on paper, but I still have a problem in my head: High side switching.
The question is, can I drive the ...
- 27.7k
0
votes
1
answer
78
views
How to add an offset to a PWM signal to control a N-channel MOSFET that has a large source voltage?
I want to control a N-channel MOSFET through a PWM signal generated by an Arduino board. The amplitude of such PWM is 0V-5V with respect to GND with frequency 20kHz.
My idea is to send the PWM signal ...
- 113
1
vote
1
answer
54
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ADP3624 question
this question might seem dump but I'm not completely sure if I can use this device for a Half-Bridge http://www.analog.com/en/products/monitor-control-protection/high-side-switches-mosfet-drivers/...
- 13