Part Number: TPS54394 Is TPS54394 PG pin high impedance when EN is Low?
If it is yes, please tell me the timing that PG pin becomes low. Is it the timing that VREG5 rises over VREG5 UVLO threshold?
Best Regards, Kohei Sasaki
Part Number: TPS54394 Other Parts Discussed in Thread: TPS65279 In searching for dual synchronous buck converters on TI's website, I wanted to see only parts with phase interleaving, where the second buck is 180 degrees out-of-phase with the first.…
Part Number: TPS54394
Hi team,
I have one question about the Power Good connection of TPS54394.
In our EVM, PG1, PG2 are pulled up through 100k resistor to VREG. I think this is because the PG1,PG2 max voltage is 5.7V. Is that right?
If my input voltage…
Part Number: TPS54394 Can TPS54394 PG1 and PG2 sink 10mA?
Our customer are thinking to use two LEDs, one LED cathode is connected to PG1 and another cathode is connected to PG2, and each LED anode is pull-up to VREG5 (pull-up resistor is 470 ohm). Each…
Part Number: TPS54394 Hi, Customers are considering TPS54394. I got three questions from customers. Could you give me your advice? 1.Is it OK to add another voltage to VIN1 and VIN2? (VIN1=12V,VIN2=8V) 2.Is the internal circuit control voltage (Vreg5) supplied…
Part Number: TPS54394
Hi team,
My customer is using TPS54394 in their project to power up FPGA. They want to use power good pins and EN pins to achieve power up sequence management.
The schematic is as below. The red line is some debug changes.
Inpu…
Part Number: TPS54394 Tool/software: WEBENCH® Design Tools Hi, Let me talk about the webench simulation result. Customer simulated TPS54394. However, it is uneasy whether customer can confirm Tj for 2ch. Please tell me how to check TJ considering 2 channel…
Other Parts Discussed in Thread: TPS54394 Dear Sirs,
Is this TPS54394 dual DC-DC buck left EN pin "NC"
The DC-DC will shutdown due to internal 450K ohm pull down resistor ?
Many thanks !
That is 3 to 4 mm from via to capacitor pads.
Yes just a small copper are for termination of sensitive signals. Connect it to the main power GND at a single point.
Other Parts Discussed in Thread: TPS54394 Hi,
I couldn't run the design simulation with TPS54394 multiple output.
and I found that the WEBENCH widget in TPS54394 product page is different between TI US website and TI JAPAN website.
(Please see the…