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Part Number: LM5149-Q1EVM-400 Other Parts Discussed in Thread: LM5149-Q1 Tool/software: Dear All,
we are finishing to design a buck from 48V to 30V up to 8A (single chip) and up to 13A (dual chips, dual phases) and we purchased two EVB...
Because, in…
Part Number: LM5149-Q1EVM-400 Tool/software: To whom it may concern,
I ordered an evaluation board of LM5149-Q1EVM-400. When I powered up the evaluation board for the first time, there is no 12V output (I used the scope to measure the 12V output, and…
Part Number: LM5149-Q1EVM-400 Tool/software: I tried to power up the board with the following conditions:
1. At no load condition.
a. Tied PFM pin to VDD so that board works in PFM mode at light load and VCCX to GND.
b. Input voltage is set to…
Part Number: LM5149-Q1EVM-400 Other Parts Discussed in Thread: LM5149-Q1 , LM5149 Tool/software: Hello,
I am trying to test LM5149 on the LM5149-Q1 EVM. Are the parts similar enough where if I replace the automotive IC with the catalog part, the EVM will…
Part Number: LM5149-Q1EVM-400 Hi Texas Instruments team,
We are currently customizing the evaluation board (LM5149-Q1EVM-400) for 12V and 20A output configuration. Basically, we are de-populating some components and populating other components which sets…
Part Number: LM5149-Q1EVM-400 Other Parts Discussed in Thread: LM5149 What is limiting the input voltage on this eval board to 72V (part is rated to 80V)? Noticed that C26 (on VIN) is only rated to 50V which is a problem even for 72V operation.
Mingkang,
We cannot give exact load/line regulation for the system.
On your board you can have variances due to layout or noise.
In ideal cases the load regulation should be close to 0.1% and the line regulation should 1%
You can see this in our EVM,…
Mahankali,
LM5148 has OCP and hiccup mode for SCP protection in its current limit feature.
Just size the current sense resistor, ~4mΩ to for a 10A design.
We have thermal shutdown but only for the IC temperatures, for the FET temperatures you will…
