Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

[moved] problem with IR2118 mosfet driver in PSPICE.

Status
Not open for further replies.
Thank you for guidance. according to your said I connect this simple circuit with IR2113 driver. but the HO gate is always '0'.
IR2113_simple.png
 

Hi,

It seems you use 16V as VDD,
but I can´t see what is the HIN and LIN input voltage level.

According datasheet you need at least 0.62 x Vdd which is about 10V.
See: Figure 12B. Logic “1” Input Threshold vs. Voltage
and: Figure 13B. Logic “0” Input Threshold vs. Voltage

I recommend to use the same voltage for logic supply (VDD) as for logic signals (HIN, LIN):
16V supply and 16V signals
or 3.3V supply and 3.3V signal...

Klaus
 

I did your said. but the PSPICE give me a error.
How it is possible that the power supply of driver and signal (pwm voltage) could be equal?!
 

Hi,

but the PSPICE give me a error.
... is not very descriptive.

How it is possible that the power supply of driver and signal (pwm voltage) could be equal?!
Why not? It´s quite usual for CMOS logic that the signal levels are almost equal to supply rails.

Klaus
 

in my design the PWM voltage is 3.1 volt. how I can use IR2113 to drive single mosfet?
I insert this circuit and it works. but the PWM signal is 9 volt.

a.png
 

Hi,

I am wondering what you want to do.

If you have a 9V PWM signal as input for the IR2113...
Why don't you drive the FET with this signal?

Why do you use 10k as series resistor to the gate?

Where do you get the 3.1V from?

Klaus
 

PWM is come out from FPGA and is 3.1 volt(I haven't PWM 9 volt).
Just in the PSPICE PWM is 9 volt.
 

Hi,

Try this:
* VDD = 3.3V
* VCC still is 12V
* input PWM is 0V / 3.1V

Klaus
 
YES.
IT WORK.
Many thanks. Now I want to simulate it with Bootstrap.
 

FYI
I changed the driver and want to use TC4426. I simulated it in PSPICE and the result of simulation was OK.
I want to implement it on the board.
my circuit is:
TC4426.png
 

Hi,

Did you recognize how often you changed your circuit?
From high side to low side switching.. different driver circuits..

Now you changed from N-cannel to P-channel....which makes controlling a high side current much easier.
If you told this earlier, it didn't need 30 posts to get a solution.

Klaus
 

OK
I recognize This driver by my friend.
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top