Other Parts Discussed in Thread: TPS54540 Hi
I have a question in TPS54540.
Calculating formula and value of fz(mod) has false in Datasheet P29 (43).
Which is correct, calculating formula(=1/2*pi*Resr*Cout) or value(=610kHz) ?
Best regards…
A while back I did a reference design using TP54620 for 2 phases. We got it to work pretty well, but it was sensitive to layout. I would expect TPS54540 to be equally sensitive.
Other Parts Discussed in Thread: TPS54540 I recently brought in the TPS54540 to one of our boards. I am using 3 of them on 3 different power rails. The input for all of them is 24V.
Power Rail 1: 19V @ 810 MHz
Power Rail 2: 12V, 1A @ 1MHz…
Hi
My Customer has question.Please cooperate.
It is written with max Vin = 42V/60V, max Vout = 41.1V / 58.8V in the data sheet.
In other words,Max Duty is 98%.
The customer is the use planned for VIN = 22.8V, Vout = 22V(Duty=about 96%)Iout=600mA…
Hi John,
Thank you for your quick response. Floating EN was the right thing to do !!
*For other purpose, I'm using a voltage divider to 6V in EN input and it works good.
Ron.
Hi
My 12V to 7.5Vdc @ 150mA to 700mA design from the Web bench simulation simply doesn't seem to start up. The boot pin shows a nice big spike every dozen mSec or so but that output never approaches 7.5V it steps up to maybe 4 V then ramps down to…
Other Parts Discussed in Thread: TPS54540 Dear all.
Our cutomer is trying to use TPS54540 with the input 24V and the output 12V battery. The 12V battery will connected before 24V input and there is a capacitor of 2000uF for momentary power failure in…
Other Parts Discussed in Thread: TPS54540 The question is about using TPS54540 as a negative power supply. Specifically the enable pin. We will need to enable this after the main power supply comes up, so I need to hold this power supply disabled. Do…
Other Parts Discussed in Thread: TPS54540 Hi Everyone,
Now our customer plan to use synchronized operation at TPS54540. Then please let me know the recommended input timing of external SYNC signal. Can you recommend to input external SYNC signal before…
