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The datasheet of TI DP83822IRHBR and many other ICs recommend to use 49.9Ohm resistors as termination resistors for interfacing the PHY and RJ45. The screenshot of the circuit from the datasheet is attached. The resistor package usually recommended is 0402, which has a power rating 0.0625W...
It is better to see the VDS of both the devices in the leg. Checking the body diode-forward voltage drop of both the devices when the circuit is not powered may give some hint about the MOSFETs.
Some drawbacks of the new device are : Diode forward voltage drop increased, Reverse recovery charge increased, Continuous drain current rating almost decreased by 30%
I am not exceeding the gate to source voltage limits. With the ringing in the gate to source voltage, I am not confident to go to higher drain to source voltage(sorry, I forgot to mention drain to source voltage in the previous reply). So, I am using a higher gate resistance to reduce the...
Regarding the turn-on gate resistance, I have tried lower values of gate resistances. With 20 ohm gate resistance (the maximum gate resistance they show in the characteristics plots) itself, the ringing in the gate voltage is too much. I am not confident to go to higher voltages, as I doubt the...
I am using the Cree C2M0025120D device for my research purpose. I have found recently that the datasheet of the device now shows different specifications compared to the previous datasheet of the same device. The link for both the datasheets are given below :
Old ...
Generally ZVS turn-on of MOSFET is considered as a good feature in power converters. In H-bridge converters, the MOSFETs in a switching leg operate in complimentary manner. So, when one device is undergoing ZVS , it is certain that the complimentary device turn-off happened when it was carrying...
Can anyone suggest a good optocoupler IC, that I can use for voltage sensing with single voltage source. I am using ACPL currently, but it requires two voltage sources. When I use this IC for both primary and secondary side of my transformer isolated power converters, I need 3 separate voltages...
I am writing a vhdl code. Where I have to do multiplication of two std_logic_vectiors. Say a and b. Then I have to take "NOT" of it.
If I write a code like: not a*b; will it work?
Yes, it is only for quarter wave. I have modified it as given below:----------------------------------------------------------------------------------
-- Company:
-- Engineer:
--
-- Create Date: 10:17:06 01/22/2019
-- Design Name:
-- Module Name: sincos_table - Behavioral
-- Project...
I am using this code to generate SPWM signals. So, I have generated a triangle wave using a std_logic_vector. Now, I will compared it with the sine wave output from this code. So, it is better to put it in binary format I thought. I am getting hardware result now.
Thank you for your reply. The problem solved when I initialized the integer signals. I put num equal to 513 by mistake. But still it is working. Anyway I will correct it. I was using this code to generate SPWM signals. I was not getting result in hardware. Now I am getting.
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