Part Number: TPS62220 Hi team,
TPS62220 has EN-pin and UVLO function. So when Vin>2.5V and EN=H, it will generate regulated output.
How does TPS62220 behave with below two conditions? Will the start-up sequence begin with soft-start? Or will it…
Other Parts Discussed in Thread: TPS62220 , TPS62080 , TPS62740 Dear Sir
My customer want use TPS62220 in Vin 3.3~4.2V and Vout 3V/400mA~500mA. but need Iq max<30uA.
from DS, the Iq max is 25uA. may we double check if TPS62220 suit this application…
Other Parts Discussed in Thread: TPS62220 Greetings, The following questions are about the startup behavior of the TPS62220. The datasheet does not explain this very well.
1) What is the variation in startup time for the TPS62220? Is this characterized…
I am seeing the exact same issue. TPS76901 applied exactly like the data sheet recommendation in Figure 22. Load current of 15 mA. Oscillation issue almost identical to above. Lower ESR caps applied to output offer NO improvement. Still oscillates. Good…
The TPS62240 , TPS62260 ,and TPS62290 are not designed to work with large output capacitors. The internal compensation is designed for smaller (4.7uF to 22uF) ceramic capacitors. Using larger capacitors changes the power stage transfer function, which…
Hello,
The UCC3806 is a dual output controller though it can be used in a flyback where only one of the outputs are used to drive the switch it might be better to choose a single output controller. Look at page 46 of the attached under General Purpose…
Siyu,
I think the toggle flip-flop in the block diagram on page one of the spec should have let you know that the max you will get with this device is 50% duty.
Go to page 43 and 44 of the attached and select a more suitable part.
Peter,
i am enclosing the Power Management Guide for 2011. The section you will be interested in starts on page 43 and actual devices listed on page 46, With the minimum information you have given me I would expect that you will want something like…
Other Parts Discussed in Thread: TPS61220 I have an very low power application powered from a solar cell buffering energy in an supercap for work during night time. The average current of my device is about 150 µA at 3V. Unfortunately the TPS start up…
