Part Number: LM5122 Other Parts Discussed in Thread: PMP7979 , Hi Team,
There is a good new that we find a new project !
SPEC : Vi : 14V / 60V
Vo : 24V / 150W
I think PMP7979 is a good Reference Design !
And I want to know how two LM5122…
Part Number: LM5122 Hi TI expert,
Can you explain what is the purpose of adding RX1,DX1,RX2,RX3,DX2 and RX4 to the circuit? Is it mandatory?
tidrkl9.pdf
Thanks a lot.
Part Number: LM5122 Other Parts Discussed in Thread: PMP7979 , LM5171-Q1 , LM5171 , Hi team,
The customer wants to follow the PMP7979 dual-phase LM5122 design with changing the frequency to 500KHz(250kHz*2phase)
Their application requirements will…
Hi Mohammed,
The LM5122 device itself has no maximum output current limit. All power stage components (inductor, MOSFETs) are external, so these parts need to be rated for the maximum current levels.
In addition, LM5122 is multi-phase capable, so…
Hi Tommy,
Thanks for using the e2e forum. LM5122 has a bypass mode feature, meaning if VIN goes above target VOUT, it will activate the high side MOSFET in 100% mode to minimize losses. There is no device change necessary and LM5122 should already be…
Hi Paul,
Thanks for using the e2e forum. LM5122 should already be a good part selection for this application. As this this is a 540W application, I would strongly recommend to implement an interleaved approach with two or more phases to distribute the…
If you want 5A load current, use the following ref which is closer to your application. You just need to adjust the low side resistor at the FB pin to correct the output voltage to 48V.
Thanks,
Youhao
Hi Adrian,
Here are two other examples that might help
TIDA-01168
PMP7979
Neither is exactly what you need, but I think PMP7979 could be scaled to 4 phases to give the output you need.
TIDA-01168 is a higher power example and is bi-directional…
Hi Ben,
I don't find another design that matches your requirements, however, any boost converter can be configured as a negative-to-positive buck-boost. Take a look at PMP7979 which used the LM5122. For your power level you could use a single phase…
Hi Kyle,
Thanks for reaching out with your questions and for considering the LM5122 and LM5121.
Based off of the specifications provided I think these are the correct parts for the application. The power levels is pretty high (520W) I suggest using…
