Hi All,
I'm starting design a PD power supply unit, need output max 5.2V/2.4A. Could you please suggest an controller to start?
Thanks a lot.
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Hi Todd,
1. TPS23753A is newer IC without the secondary gate driver for a more cost effective soltuion.
2. We currently do not have an app note regarding different bridge topologies. Typically, diode bridges are used. When higher efficiency is needed (+1-2%), different types ofFET bridges are used. For 13W range, half FET/diode bridge is good. At higher power levels, full FET bridges can be used. Such as in PMP8923.
3. Please see attached PMP9175 Orcad files. Which was exported from Altium. Below is a link to it's test report
Hi Calvin,
I recommend contacting the coilcraft sales support or local coilcraft contact to obtain samples of the transformer as there is no online orderable transformer avialable for this part.
For the Class 0 resistance, it will work as well.
Hello Darwin,
1. The Orcad file .dsn file did not work. Is there some special procedure to use those?
2. I noticed the TPS23753AEVM-235 (5V/2/A) rates the efficiency at 93% while the TPS23757EVM (5V/2.2A) rates the efficiency at 87% per your docs. So that's 6% difference which is big. So if 1-2% diff is related to the bridge what is other factor affecting the remaining effciency difference?
Thanks for the support!!
Hello Darwin,
The OrcadExport did work when loaded with older Orcad V9.1. I'll look at the transformer designs more closely.
Thanks!