Hello,
I am considering the LTC3728.
Is it possible to configure a parallel output using the LTC3728?
I would like to use it in the configuration shown below.
5V⇒1.8V/20A
Best Regards,
Hello,
I am considering the LTC3728.
Is it possible to configure a parallel output using the LTC3728?
I would like to use it in the configuration shown below.
5V⇒1.8V/20A
Best Regards,
Hello,
Yes, the LTC3728 can be configured for a single output, dual phase converter. The data sheet does not show examples, but this has been done before. When paralleling phases, make these connections:
An example is shown below:
If the 5V input will drop below ~4.7V during normal operation then tie the VIN and INTVCC pins together and tie the combined pins to the 5V input with a 1Ω or 2.2Ω resistor. Since INTVCC supplies the gate drive voltage for the top and bottom MOSFETs, this will ensure the MOSFETs have a sufficient gate drive voltage.
More recent dual phase / dual outputs parts to consider are the LTC3850, LTC3855, LTC3869, LTC3875, LTC3838/-1/-2 and others. Single output dual phase controllers to consider are the LTC3856 and LTC3839.
Best regards,
Mike
Hello,
Yes, the LTC3728 can be configured for a single output, dual phase converter. The data sheet does not show examples, but this has been done before. When paralleling phases, make these connections:
An example is shown below:
If the 5V input will drop below ~4.7V during normal operation then tie the VIN and INTVCC pins together and tie the combined pins to the 5V input with a 1Ω or 2.2Ω resistor. Since INTVCC supplies the gate drive voltage for the top and bottom MOSFETs, this will ensure the MOSFETs have a sufficient gate drive voltage.
More recent dual phase / dual outputs parts to consider are the LTC3850, LTC3855, LTC3869, LTC3875, LTC3838/-1/-2 and others. Single output dual phase controllers to consider are the LTC3856 and LTC3839.
Best regards,
Mike
