Hi JIngwen
The IQ in datasheet is specified as 'nonswitching quiescent current', To test this item, please apply a >Vref voltage on FB pin (in the the datasheet EC table it uses 1V) , so that the device will not generate switching pulse. This is how we…
Other Parts Discussed in Thread: TPS7A39 , TPS62933F Hi TI team,
I am looking for a converter that with below parameters:-
1. Dual input voltage i.e -27V and +27V.(DC input)
2. Required dual output voltage of -3.3V and +3.3V.(DC output)
Please help in…
Hi Aleksei,
It's always to hard to accurately calculate decreased fsw during PFM operation. You may use webench simulation results as a reference, but hard to get an accurate value of decreased fsw.
If you want fixed fsw among full loading range…
Hi Ruby
Thank you for these comments and agreed, I would also think that one must use the TPS62933F to implement a Flybuck.
Do you have a reference design that the customer could use as a starting point for:
Vin= 12V ... 28V, Vout=5V, Iout=100mA
.... or…
Hi Fred
As we talked offline, we may have some actions here:
1. Use TPS62933F to check whether there is any noise here.
2. Capture the output voltage during load transient
3. Check the output cap voltage tolerance.
You may also try to add one Cff here…