Part Number: LM5143A-Q1 Other Parts Discussed in Thread: PMP31210 Hi,
Please kindly provide the PMP31210 PCB layout source file to us, we need to check our design feasibility, thanks.
Hello Paul,
The specified currents of 100A is assuming a 4phase design, you can go over the 20A per phase, but will need to manage the power losses/thermals as a result of high current per phase. this is not supported through webench. you can download…
Hi Ann,
12V/1000W means current is 83.3A. I recommend use four phase interleaved buck converter by two LM5143. You can see this as a reference design: PMP31210 参考设计 | 德州仪器 TI.com.cn .
BR,
Shipeng
Albert,
See reference designs:
https://www.ti.com/tool/PMP31210
https://www.ti.com/tool/PMP23262
I didnt see any current sharing waveforms specifically, however the switching waveforms along with the thermal images and inductor temperatures being close…
Hello Alessandro
Yes, I think you can use the peak current limit function to limit the current. Also, I think PMP31210 can be a good starting point.
-EL
Hello Ratheesh,
1. Yes LM5143 can be used in 4 phase configuration. Please refer to TI reference design for a 700W 4-phase design example ( https://www.ti.com/tool/PMP31210 ).
2. The device will operate in dropout where the output voltage will regulate…
Hello Rogers
One LM5143A-Q1 (2-phase single-output) can handle 33A. Please refer https://www.ti.com/tool/PMP23262
Also, please check https://www.ti.com/tool/PMP31210 and find the IR images and efficiency data.
-EL
Hello Mark
Stepping down directly from 54V to 3.3V is not efficient. Please consider two-stage power conversion.
For example, you can convert 54V to 12-15V using two LM5143 devices ( Please refer https://www.ti.com/tool/PMP31210 ), then the second stage…
Hi Bernd
Thank you for reply,
I understood the mean of current sensing that you designed.
By the way, is spread spectrum have any impact for performance of power sharing?
I concern that PMP31202 and PMP31210 are setting DITH connect to AVDD, spread spectrum…