Other Parts Discussed in Thread: TPS54427 , TPS54327 Please let me know about Internal circuit of EN.
・About TPS54427
Ren 225kΩ(min) ~ 450kΩ(Typ) ~ 900kΩ(Max) :It is Internal pulldown resister, is it correct?
・About TPS54327
Ren isn…
Other Parts Discussed in Thread: TPS54427 , TPS54229 , TPS54329 Hi Sir,
I know "Soft-start control. An external capacitor should be connected to GND", but if I pull SS up to VREG5 externally and directly, is there any risk, is it harmful to the chip…
Other Parts Discussed in Thread: TPS54427 , TPS54540 , TPS5450 Hello everyone!
I would like to ask for some help regarding the usage of the TPS54427 Buck converter:
I would like to use this device to get a stable 5V output (@ max 4A) from a 6.5V power rail…
Hi,
The load requires a large input capacitance, so the capacitance is CD19 and CD20 in the below SCH. The total is 940uF. How to calculate the soft start time so I can choose the proper SS capacitor? I found if I set the SS capacitor as 10nF, sometimes…
Hi all,
Recently, I have used a few TI Power IC in one of my project. I would like to ask you guys to help to review my schematic and layout of those power circuits. I have upload the schematics and layouts and attached it to this post. Please download…
Thank you very much for your reply.
The power up sequence of SPKVDD, IOVDD, AVDD/DVDD is in the picture blelow:
The sequence of SPKVDD, IOVDD is starting up at the same time beacuse the IOVDD is obtained by SPKVDD step-down.(the chip is TLV1117) and the…
Part Number: TPS562200 Other Parts Discussed in Thread: TPS54427 TPS562200 12.0V Input gets disrupted for 100us due to a new type of expandable subsystem powering up. During this time the TPS562200 3.3V falls linearly to 1.875V over 300us, holds flat…
Part Number: TPS563210EVM-663 Hello,
We decided to use the converter TPS563210DDF in one of our products, but we faced a thermal problem, as described in the datasheet the IC has a nominal current of 3A, but after many tests a thermal shutdown is activaded…
Deep,
Adding a simple DC-DC for the 5V is going to be a good solution. It is easy to implement and will not add too much cost.
I would recommend something like TPS56420x or TPS54427.
Thanks,
Robert