Part Number: TPS40180 Hi Support team
My customer used TPS40180 for 4phase 5V DC/DC synchronous buck converter with 12V input voltage.
The output current is 90A with over current spec 110-130A. Now, we have problem as below.
The converter can take loading…
Part Number: TPS40180 Hi,
I use TPS40180 4 phase for buck 12V to 5V .
I found master IC shutdown when surge 2kV tested.
Please give us some suggestions for protect, thanks.
Part Number: TPS40180 Hi, I am trying to use 4 x tps40180 parallel for high current application (like datasheet page 22 ), but I have problem about the PSEL setting.
Condition 1:
Master PSEL: OPEN=8 phase CLKIO
Slave1 PSEL: 14.7Kohm=90 degree
Slave2 PSEL…
Hi Martin, thanks.
It becomes a bit clearer what I could expect from the 40140 master/slaves configuration and what not:
- Current sensing of higher CM voltages like 5.8V are done by a voltage divider, this is ok.
- Over current protection of the slave…
Other Parts Discussed in Thread: TPS40140 , TPS40180 Hello
Could you tell me why R1 is calculated by equation 15? (datasheet page 19)
Best Regards,
Junichi Yamamoto
Kurt,
The circuit looks correct. Verify that the OP-AMP selected can pull the ouptut low enough to hold the SS pin at 0.75V with the soft-start current forced across the diode. We need a pretty low minimum output voltage on the Op-AMP. If you need…
While I do not support LM5117-Q1 directly, I can make some comments.
Generally speaking, you cannot just tie the two outputs together. Usually the load currents will not be balanced. One converter will tend to run towards current limit. There are…
Here are the controllers that meet your criteria:
LM25141 - Low Iq, Wide Input Range Synchronous Buck Controller
3.8
42
1.5
15
20
1
1
350
2600
0.035
Adjustable Current Limit, Enable, Frequency Synchronization, Light Load Efficiency, Power Good, Pre…
Hi Guillermo,
Yes, this part is as preferred to use for new design. TPS40140 and TPS40180 are the best stackable controller and they are very popular parts in TI. We have a lot of DINs along with NexFET recently. I don't think they will be obsoleted…
