Part Number: DEM-OPA-WSON8-EVM Good afternoon, is it possible for you to provide the gerber files of the mentioned evaluation board?
Thanks in advance,
Pablo.
Part Number: DEM-OPA-SOT-1A Hi Team, Need your assistance on this minor discrepancy that one of our customer had raised. On the pin configurations pin 5 is /DIS and pin 6 is Vs+. We have noticed that on the DEM-OPA-SOT-1A typical application circuit (Figure…
Part Number: DEM-OPA-WSON8-EVM Other Parts Discussed in Thread: OPA858DSGEVM , OPA858 Can you provide the size/type of passives and SMA connector for the EVM?
Regards, Bernd
Part Number: TIDA-010042 Tool/software: Hi,
I want to know how TI choosen the DEM mode current in TIDA-010042 Mosfet based reference design. According to theory we should go to DEM Mode when the output current goes below or equal to critical current …
H Jerry
Thanks. So INA350 need a REF like reference design if I want to cancel offset by software. But it will need a extra OPA as ref buffer.
I will choose INA351 for this design.
So if I use, from CCS Theia syscfg for OPAx:
PSEL=VREF
NSEL=RTOP
MSEL=Open
(Gain shouldn't matter)
and enable OPA output pin, should I get VREF buffered out on the selected OPA output pin?
Joseph,
Yes, the op-amp was completely removed. So was the 27k, and connections wired directly to output and output gnd. Functionally it works fine, and the buck-boost starts fine. Also at elevated temperatures.
I found the OPA2990 in the same package…
Hi Yixing,
So 1 PIR will need 2 OPA, right? Sorry I am not familiar with PIR solution.
If you want 2 PIR, I think MSPFR2355 could be a better option.
But I will discuss with my colleague to see if there is any better solution.
Regards,
Zoey
Hi Richard,
I see, so if the device is used in FPWM mode and the average output current decreases below the ripple current divided by 2, then I suppose we are entering a zone where inductor current becomes negative in CCM, and so, you will have a loss…
