Can I use only lower side of ir2110?

[jean12]

Hi Tahmid,
It is really really nice to see you to take a good care of this thread.
Maybe you should give correct mosfet driving circuit before some guys blown up more mosfet.
And also, please don't forget to make them some explanation of Vgs threshold level, linear and saturation region, ton toff prochedure, dv/dt, voltage transient, fast recovery diode, emc, and of course isolation method before someone get strike.

I now get the point that I am using bas driver for my H-bridge;so I want to know if two drivers only can be used for driving the H-bridge in case two MOSFETs operating at the same time are getting the same signal?
I am asking this because I have only two TLP250 so in case the above idea is realisable I can connect the two MOSFETs at the same signal then get my H-bridge be driven,or you help me to know if the HV400IP can be used for H-bridge.

Thanks,please help.!!

 

[FvM]

I think, the most important point is to understand the requirements of H-bridge drivers. Without it, it's pointless to discuss specific circuits.

All transistors need a control voltage to be applied between gate and source. That's easily implemented for the lowside switches if the control circuit ground is tied the negative bus voltage, but for the highside transistors, some kind of floating or isolated drivers is required.

- each highside driver must be supplied by a separate isolated voltage source. This can be either an isolated DC/DC converter, a separate output of a transformer supply or a bootstrap circuit.
- the control signal must be level shifted, optically or magnetically isolated

 

[jean12]

so can you guide me on how I can proceed with my specific circuit?

Thanks,please help.