Part Number: TPS61081EVM-147 Other Parts Discussed in Thread: TPS61081 It appears that TPS61081 is not listed on the website. No EOL letter has been issued. It is listed as discontinued on Digikey and Mouser. In fact, what is the STATUS of TPS61081?
Other Parts Discussed in Thread: TPS61081 I plan to use this regulator evm to step up the voltage from a BQ Tesla wireless power receiver supplying 5V@1A to about 14.6V in order to charge a sealed lead acid battery, at a slow charge rate of about 300mA…
Hi Andrew,
The LMR36015 is internally compensated. The feed forward capacitor (Cff) placed across the top feedback resistor is used to as a way to boost phase margin and increase transient performance. For more information on the role of Cff please…
Hi,
Maybe you can add more output capacitors and add a suitable feedforward capacitor to get faster loop response. Thanks.
8737.Design Feedforward Capacitor for LMR14020.pdf
7288.Optimizing Transient Response of Internally Compensated DC-DC Converters…
Part Number: LMR33630CRNXEVM
Hi Expert
I tried to understand the CFF calulate and I have some question need your help
the equation shows below in datasheet : my Cout : 66uF, VREF=1V, Vout=3.3V, RFBT=100K , chip freq=2MHz , Loading current from 150mA…
Hi,
During the load transient test, the change value of the output voltage ripple is related to the loop speed. Generally, the faster the loop, the smaller the peak value of the Vo_ripple. For the converter, this situation can be improved by adjusting…
Hi Tiger,
Thanks for your quick response.
There are two options to reduce the voltage deviation during transient load: 1) increasing Cout < 100uF and/or 2) increase Cff. In both cases, loop stability needs to be checked so phase margin => 45deg. I…
Hi
what's the slew rate of the current transient? If it's lmore than 100mA/us, the overshoot and undershoot are really hard to be less than 100mV in the wide Vin. The value of the overshoot and undershoot in output (it also can be called ripple) are…
Hi David,
Please see comments below as highlighted.
1) Do you see any problem regarding load transient or instability for this configuration? --> Output capacitance outside the Lout and Cout matrix shown in the datasheet might result to low phase…
