Forum Post: RE: Multiple PTH08T2xx modules w/ & w/o SmartSync
Rainer03.The PI filter per the diagram attenuate all beat ripple and switching frequencies between 100kHz and 10MHz by 10-15db.The low frequency ferrite bead listed is from Fair-rite with a part...
View ArticleForum Post: RE: UCD9240 droop compensation
I've already done that. Problem is the droop is between the on the inner layers of the PCB and the die bond wires. There is no way to get a closer measurement.
View ArticleForum Post: RE: bq24190 - Sharing D+/D- USB lines with host
Charles,CM: The USB detection is to decide what input current limit the IC should set on power up as per table 2 in the data sheet.MS >> I know it and I did notask about...
View ArticleForum Post: RE: TPS650250 efficiency of LDO's
Perry, We do not spec the efficiency for the LDOs at 10mA. I can look for some data to support a good hypothesis but, if you order an EVM from our store that will probably be the fastest and most...
View ArticleForum Post: LiPo Management
Hello, Í'm trying to find an "all-in-one" solution for managing two LiPo-cells in series. The problem is, that I can't see the wood for the trees anymore, because there are so many options. I can't...
View ArticleForum Post: RE: Recovery from UVP status on TPS54295, TPS542941, TPS54394 and...
Yes. That is what I would expect.
View ArticleForum Post: UCD3040 Phase shift full bridge AC/DC power supply
In a phase shift full bridge AC/DC power supply application, UCD3040 DPWM1 and DPWM2 used as full bridge primary drive outputs. In such configuration, if the event1, event2, event3 and event4 register...
View ArticleForum Post: BQ27520-G3: Reading Wrong SOC values
Hi,We are using BQ27520-G3 on one of the boards. We have an application which logs the battery charging current, SOC, Battery voltage etc. Please see the logs attached. The Fuel gauge is calibrated...
View ArticleForum Post: RE: LMZ13608 issues
Hey Joshua,Can you please test the LMZ13608 using a resistor load to see if the output will regulate at 3.3V? Can you please post your PCB layout? Lastly, what the current rating of the AC...
View ArticleForum Post: RE: LiPo Management
Samoht,I would recommend either the bq20z45-R1 or the bq20z65-R1 device for this application. The z45 does not offer LED support and the z65 does. You could choose the version that best fits your...
View ArticleForum Post: TPS65100 VCOM buffer
I am using the TPS65100 to drive a replacement 7" LCD display for our product. Our previous display had the bias circuitry integrated to the panel.The new display worked fine when I used the TPS65100...
View ArticleForum Post: RE: common grounds between positive and negative pwr supplies
Thanks for the quick response. The issue I had, and you verified what I had hoped, was that the eval board that we are testing with was designed for +5 out. So on the board the two grounds are...
View ArticleForum Post: RE: Switching Mosfet Dissipation
A, Multiplying average Vds by average Ids will not necessarily yield an accurate power dissipated value. Consider that when the FET is off, Vds is high and Ids is virtually zero. When the FET is on,...
View ArticleForum Post: RE: Energy Storage and Regulation
Hello Ron,Sorry for the typo, that is correct P=E/T.I will use the boost you recommended. The specs look good!Thanks for the inputs.
View ArticleForum Post: PMP5651
I'm looking for a solution similar to PMP5651. 22V-50V input, 53V-54V output, but with a higher output current requirement of 2.5A.It would look like that major changes would be 63V or higher rated...
View ArticleForum Post: low power application
I am considering the bqTESLA for a lower power function and would like to use smaller coils. The power requirement is 100mW and the coil of the receiver should be less than 20mm in diameter and about...
View ArticleForum Post: RE: TPS78230 at Vdropout
Hi Mike,Since your worst case current draw is 80mA, let us consider that:This part is specified at max 250mV Dropout Voltage for 150mA of current draw. Thus, your LDOmin_resistance or RDSon = (250mV /...
View ArticleForum Post: RE: Details needed for TPS3828-33DBVT
1) The inverse of 3.5mW/C is 286C/W.2) From the DISSIPATION RATINGS table of the data sheet, the maximum dissipation at 85C is 227mW.3) Therefore to address the original question, the maximum...
View ArticleForum Post: RE: LM22673 Whistling like a Tea Kettle
Hi Anthony,Did the C0G caps solve the problem? I think the inductor could also be the singing culprit. If your circuit has Large current pulses it could contribute to the issue as well. Can you share...
View ArticleForum Post: RE: LMZ22010 Inverting Mode
Hi Guenter,We don’t have a buck-boost model but we do have both the Ispice and Pspice model for the Buck. The Buck Pspice model is available from product page.Thanks,Anston
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