All Questions
7
questions
0
votes
1
answer
49
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Identifying MOSFET (P9DVA) and diode (AD6) Markings
I need help identifying a MOSFET and a diode in a circuit, specifically on the Pololu board D24V25F5.
While researching, I came across information about a diode (NSVR0340) with the AD4 marking. ...
- 903
0
votes
1
answer
131
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DC-DC buck converter's MOSFET or IGBT?
Motor Specifications:
Rated power: 50 kW
Rated voltage: 200V DC
Rated current: 250A
Battery Specifications:
Nominal voltage: 400V DC
Capacity: 50 kWh
Design Requirements of the DC-DC Converter
...
2
votes
2
answers
206
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MOSFET selection for buck regulator (SOA vs thermal dissipation)
I am trying to design a buck regulator with the following specification: Vin = 24V Vout = 5V I max = 8A Fsw=228k. The load is basically a long strip of RGB LED's. Which in certain cases would be all ...
- 757
0
votes
2
answers
607
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Does the body diode of the high side n-channel FET in a buck converter turn on during switch node voltage spike time?
A typical synchronous buck:
The normal switch node spike that people typically see when the high side FET turns on:
In the past i have been fairly negligible on this part. When the switch node spike ...
- 109
0
votes
1
answer
100
views
IC datasheet and MOSFET selection question
I am trying to design a buck converter using TI's LM3150 synchronous buck controller and I am wondering how to read some of these specs and how to select MOSFETs based on gate charge:
https://www.ti....
- 109
0
votes
0
answers
137
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Buck Converter MOSFET Output Voltage distorted (PWM)
The input to my buck converter MOSFET switch is a PWM signal with a certain duty cycle. However, upon observing the voltage waveform of the MOSFET, the voltage is a bit distorted.
The input to ...
- 13
0
votes
1
answer
2k
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Buck converter MOSFET getting hot
I am building a solar charge controller. I have based the design on pwm5 by Julian illet (circuit diagram attached). I am trying to convert this PWM charge controller in to a mppt one.
The buck ...
