This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS543620: New Product Update's Contents

Part Number: TPS543620
Other Parts Discussed in Thread: TPS546D24A

Dear TI Team

I would like to ask you some questions about the following New Product Update materials.

1. In the Power Density part of the above document p.4, it is written as follows.
New devices are being designed to minimize switching losses and
increase efficiency at higher Fsw
What ideas do you use to reduce switching loss in devices such as the TPS543620 introduced this time?

2. There is information in the above document that we have released a device that supports a large output current of 5A to 40A. Is there any reason you want to focus on some application?

3. You have released TPS546D24A / B24A / A24A that support PMBus this time. Is there any reason why you dared to release a new product that supports PMBus?

Best Regards,


  • Hi ,

    I can comment on your first question related to the TPS543620. The TPS543620 achieves high efficiency at high switching frequencies through a combination of the package, driver and the power MOSFET design. The package is designed to minimize parasitic inductance which helps keep the peak VDS voltage across the power MOSFETs low. The driver and MOSFET design takes advantage of the low parasitic inductance of the package. The driver and MOSFETs are optimized to switch the MOSFETs on as fast as possible to minimize switching loss while also keeping the voltage stress within the ratings of the MOSFETs.

    For the other two questions, I'm not sure I follow them fully. For the TPS546D24A / B24A / A24A PMBus provides multiple benefits. Two key ones which come to my mind are the ability to change the devices settings through software (no need to modify external components on the PCB) and telemetry.