TPS7H4010-SEP: efficiency under 28V input

Hey David,

In order to facilitate this data collection can you provide the following:

1. Mode of operation
2. Frequency
3. Output currents you would like to collect
4. Output voltages

Thanks,
Daniel

Hi Hartung,

1. Mode of operation

==> Auto mode : this is the most efficient operation mode at high load current.
2. Frequency

==> 1MHz : 1MHz is more efficient than 500kHz or 2MHz according to the datasheet
3. Output currents you would like to collect

==> 3~5A
4. Output voltages

==> 3.7V, 5V, 8V

Thanks.

Hey David,

I will work on getting the information you asked for, but some of your comments are somewhat confusing.

Auto mode is most efficient operation mode at low currents. For high currents it should be practically the same
Auto mode graphs are a bit hard to read because of the x-axis scaling.
I presume this won't change your pick for auto mode.

1 MHz is not the most efficient operation point for the current levels you want
You can see the peak of the 500 kHz graph for 24 V to 5 V is ~93-94% while the peaks of both 1 MHz and 2.2 MHz are under 92.5%

Please confirm that 1 MHz is still the operation point you would like data for.

Thanks,
Daniel

I want to use 1MHz because of reducing size.

Thank you

Hugh

Hey Hugh,

Understood.
Please allow us a couple of days to get this information for you.

Thanks,
Daniel