Part Number: PMP7969 Other Parts Discussed in Thread: TIDA-01168 , PMP7979 Hello team,
at my customer they are trying to implement a boost stage in order to make an electric motor work at 48V. They are looking for a four phase synchronous boost that does…
Part Number: PMP7969 Other Parts Discussed in Thread: LM5122 Hello Team,
One of our customer required design file of PMP7969 for further analysis. The test results shows one phase is loaded with full power for short period of time. Can you please help…
Hi
I am following PMP7969 (schematic here: https://www.ti.com/lit/df/snvr292/snvr292.pdf ) is for example a 4-phase design) , can you tell me what is the issue
going ahead with that since i already freeze my initial bom for boost converter
Also pls tell…
Hi Aiwen,
thank you for using the E2E forum.
When targeting in output power of 1kW you need to go with a multiphase design.
Below reference designs might be a good starting point:
https://www.ti.com/tool/PMP6712
https://www.ti.com/tool/PMP21943
https…
Hi Sankar,
Please take a look at the following reference design for an idea on how to implement this solution.
https://www.ti.com/tool/PMP7969
Please let me know if you have any other questions,
Richard
Part Number: LM5122 Other Parts Discussed in Thread: PMP7969 Hello TI team,
my question is about usage LM5122 with parallel output. But with different inputs. Is it real. This appliaction is about charging the gel battery from differnet inputs.
Thanks…
Hi Carlo,
Sure. Please check this reference design. https://www.ti.com/tool/PMP7969
I think it shows that recommended spec because it's together with the converter. It seems to disable this information when going into the controller section. https…
Hi SHH,
Yes, either LM5122 or LM25122 would do it. LM5122 has the switching frequency up to 1MHz while LM25122 is only 600kHz.
For the power level of around 500W, single phase is not enough. Webench does not support multi-phase design but we have some…
Hi Chee,
Helen is correct, the LM5122 is probably the best IC for this application. Reference Design PMP7969 is a good starting point for this application.
Please let us know if you have any questions.
Thanks,
Garrett
Other Parts Discussed in Thread: LM5122 , PMP7969 Hello,
In LM5122 datasheet, section 8.1.3, figures 32, 33, 34, the sync pulses into SYNC IN/RT pin are required to be 5Vp-p, even though the SYNC thresholds data seems to be compatible with 3.3V.
In reference…