LMG2100R044: Single pin control input mode

Zach Dryer

Part Number: LMG2100R044
Other Parts Discussed in Thread: LMG2100EVM-078

Tool/software:

Hello,

I have a controller that only has one enable pin. I would like to know if there is a single pin control input mode for the LMG2100R044 so that I can interface with this controller.

If so, what does the pin configuration look like for the I/O?

Thanks,
Zach

over 1 year ago

0 Kyle Wolf over 1 year ago

TI__Expert 7435 points

Hi Zach,

When you say the controller has only one Enable pin, do you mean it only outputs one PWM signal to control the half bridge?

Best,
Kyle Wolf

0 Zach Dryer over 1 year ago in reply to Kyle Wolf

TI__Genius 13310 points

Kyle,

Yes. I am not sure how to connect the LI or if it can be left to GND.

Thanks,

Zach

0 Zach Dryer over 1 year ago in reply to Zach Dryer

TI__Genius 13310 points

Kyle,

Thanks for replying to me directly.

Best,

Zach

0 Kyle Wolf over 1 year ago in reply to Zach Dryer

TI__Expert 7435 points

For the LMG2100R044, you can use a circuit to create a complimentary PWM signal and add deadtime. An example of this circuit is in the LMG2100EVM-078 user guide.

Best,

Kyle Wolf

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LMG2100R044: Single pin control input mode