Ricky:
1. The 280mA max input current when Viso is unloaded is due to the load created by the internal voltage clamp activated when the output voltage rises at no load, to prevent the output voltage from exceeding the 17V max limit.
2. The input current…
Hello,
I have a question. Can I use ADuM5230 for driving a half-bridge, which connects a load to ground from +350V and from -350V? You can see this schematic in the attachment.
Thank you.
Tomas
Hi Ernesto, This part is recommended for new designs and is released to production: http://www.analog.com/en/interface/digital-isolators/adum5230/products/product.html
Steve
Gil: The ADuM6132 can run hot even at not load because of the internal overvoltage protection will clamp the output voltage to prevent an overvoltage beyond the 18V limit, thus causing internal power dissipation to rise even for no load. The internal…
Hello Erdem,
Yes, the ADuM123x require external voltage sources on the secondary sides.
The ADuM123x do not contain internal shoot-through protection, and allows for both outputs to be high at the same time.
If you are looking for a solution that contains…
Hello Rixo,
It is possible to get more drive strength by paralleling the outputs, but separate series resistors are recommended. If the VoA and VoB pins are shorted together directly, any timing mismatch translates to internal shoot-through of the drivers…
The actual RMS current needed to drive a gate is usually surprisingly low. I may be wrong, but when you refer to the 8 mA limit of the ADuM3223, and 23 mA of the ADuM7234, are you referring to "VDDA/VDDB Supply Current" and "Output Supply Current A or…
Hello usaghi,
For a half bridge topology, the ground of the high-side driver must be able to float relative to the ground of the low-side driver. There are many ways an IC can do this. You may have seen level shifter gate drivers in the past, but we…
Hi Mark,
Thank you for personally answering this request! I'm stoked to be conversing with the author of the app note!
So, I will begin working with this to create a normally-closed relay using PFET devices that will switch within the 5V limitation…
