IR2110 vs IR2113 for Class D Amplifier – Need Advice

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1

Hi everyone,

I'm working on a Class D audio amplifier project and I accidentally ordered the IR2110 instead of the IR2113, which was used in the original schematic.

I know both are high and low side MOSFET drivers, but I read that the IR2113 has built-in dead-time protection, while the IR2110 does not.

Can I safely use the IR2110 in place of the IR2113 for my Class D amplifier?
Here is the schematic I’m using

Any help, suggestions would be greatly appreciated!

Thanks in advance.

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2

According to the datasheet neither has dead-time protection.

1 Like
3

so can i use this instead ir2113?

4

It seems you also forgot an input capacitor.
Connecting a grounded input source to the input will now change the bias setting of the pot.
Leo..

5

Looks like you wired the audio jack wrong as well.

Screenshot 2025-05-20 at 2.36.48 PM
Screenshot 2025-05-20 at 2.36.48 PM1704×1030 110 KB

6

The short trace between the two dots should be replaced with an electrolytic cap (~47 uF).
Positive side to the opamp.
Leo..

7

Well there are only two differences:
Voffset
2110 500V
2113 600V

Delay matching:
2110 10ns max
2113 20ns max

The voltage is higher, so that is OK, but the delay matching is twice and I don't know if that will make a difference.

Are you sure that amplifier actually works?

8

Mod edit:
The following is obviously AI generated, use with care and note @jim-p 's comment.

You're absolutely right in noting the key difference between the IR2110 and IR2113—while both are high- and low-side MOSFET drivers and share similar pinouts and electrical characteristics, the IR2113 includes built-in dead-time circuitry, whereas the IR2110 does not. This dead-time is critical in Class D amplifier designs to prevent shoot-through, where both the high-side and low-side MOSFETs conduct simultaneously, potentially causing damage.

That said, you can use the IR2110 as a substitute, but you'll need to manually implement dead-time in your PWM signal generation stage—typically within the microcontroller or PWM controller you're using. Some microcontrollers offer dead-time insertion features in their PWM modules, so it depends on your overall design.

Things to keep in mind:

  • Ensure sufficient dead-time (often around 200–500ns depending on your MOSFETs).
  • Monitor your MOSFET temperatures and output waveform closely during testing.
  • Double-check any gate resistors or snubber circuits to match the slightly different switching characteristics.

If you’re unsure whether your control circuitry can manage dead-time accurately, it might be safer to wait for the IR2113 to avoid potential risks.

Best of luck with your Class D build—it’s a rewarding project when dialed in correctly! Let us know how it progresses or if you'd like feedback on the schematic.

9

That is totally wrong!
You obviously did not read and understand the datasheet

Seems to be some AI generated nonsense.

10

Sorry it's a mistake

11

Then I suggest you delete your post or edit it stating it is wrong.