IR2110 as low driver only

[agu_rn]

Hi, im doing the next circuit:
In the LIN pin there is a signal generator with a PWM with 3.3 V of amplitude

But if i see the signal in LO i get the same voltage equal to the input.

Is that okey? or should i see that signal amplified with amplitude 12 V?

 

[KlausST]

Hi,

Your VDD voltage is not shown. What is it?
V_IL and V_IH depend in VDD.

Also your symbol is misleading. Please note:
* Input is referring to VSS and VDD
* LO output is referring to COM and VCC
* HO output is referring to VS and VB

No capacitors are shown. While a simulation (wrongly) may show good results, the real circuit will not work reliably.

The output voltage (privided proper input levels) is given in the datasheet: V_OH max = 1.2V (means 1.2V less than VCC).
(With the given test conditions)
So you should expect 10.8V ... 12V w.r.t. GND.

Klaus