Searching on Arrow’s pages I found 3 MOSFET’s in SOP Advance package that have insane ratings. 2. 40V 246A Rds=1mOhm 1.2 USD 3 45V 280A Rds=0.8mOhm 1.4 USD 3. 30V 280A Rds=0.65mOhm 1.3 USD Actual limit is more like 150A with a pulse drain of 500A in accordance to datasheet. But, look at the RDS…
I have always avoided using FedEx or similar services as I import Electronics due to the cost of their services. But, as I decided to buy 4 packages from Arrow in US and found that they offered “free” P&P using FedEx – why not? I am really impressed with Arrow and some of the deals…
This one was not as hard to route as I expected. I had to do a few compromises and I need to look things over. Ground plane include a few lines that I want separate etc + I need to ensure that all ground planes are connected. But, this looks good. A bit to dence…
I purchased 4 packages from Arrow in US (MOSFET’s) and I was surpriced that P&P was included free – and yes it is. But, Arrow uses Fedex that add a fictive P&P as this is declared to Norwegian customs and this made the value look like it was above the free import limit – which…
This will be work in progress for another week at least. I have routed the right side of DRV8301, but I have the left side + MCU left. I initially started with a STM32F303CB, but decided to move up to a STM32F405RG. Current size is ca 100mm x 25mm and components only on top side.…
This show 3 components on a 3D model. The one to left is a 0603 package, and if you have any idea of how small that is then you also see the size of INA210 in the middle. INA194 is SO-23/5 which is “easy”. I consider 0603 easy as well, but 6 pins on that…
I tried to use this to demonstrate a 3-phase and realize to my shock that I have no direct access to the L293 Input. The logic chip in the middle convert this to 4 x DC drivers with logic that will get in the way of a 3-phase – so back to vero board.
This little circuit is a 5-36V 3-Phase motor driver. In this case I use 3 channels of a classic L293D to output to a small 3-phase motor and run it using a Trapzoidal motor algorithm. I am running L293 on 3.3V, but it will work better on 5V and an Arduino is better for this…
INA210 that I used earlier is only rated for 26V, and it is a 6-pin extremely small package that was a Challenge to get soldered. I have 9 more chips to destroy before I let INA210 rest, but I will not continue with this for 3 reasons (1) size of a 6 pin package and…
Current sensors are a challenge due to noise as you need to grab PWM signals. I am doing 2 things here: I am grabbing both current sensing and ground from the same place. directly on each side of the shunt. The EDA I use will try to include this in a ground plane, so I…