Forum Post: RE: LM5009A as inverting output
Don't move the bypass caps. Just add an additional cap from Vin to the minus output (IC GND).
View ArticleForum Post: RE: Regarding to choose IC for Charger circuit and energy...
Dear TI,Thanks for your suggestion.Regarding to energy indicator please suggest me the suitable IC for our requirement.If we use boost-buck regulator for battery to get 3.3V output means is there any...
View ArticleForum Post: TPS6595x audio section
Hello,In our application we need on board mic, speaker (not earpiece) and headset mic and headset speaker.We are doing above by using interface available in TPS65951:On boardMic:...
View ArticleForum Post: RE: BQ24650 6mA discharge current issue
Please attach your schematic so I can see if there are any differences.
View ArticleForum Post: RE: TPS54425 / Voltage Feedback Input Threshold vs. Temperature...
That is the data that I got from the project data base. I did not see any other data, but I will ask the IC design engineer if it is available. I would suppose that there must be characterization...
View ArticleForum Post: RE: Minimum input capacitance for multi-module design
SLTA055 is a filter reference design application note. All capacitor formulas are based upon design critera for input and output capacitors when calculating switching regulator minimum capacitance...
View ArticleForum Post: RE: 1W Dimmable LED driver solution
With a Vin that low, it will be difficult. TPS61200 could work with this LED app note: http://www.ti.com/lit/an/slva364/slva364.pdfAs well, there is TPS61260 but it can only drive 100 mA.
View ArticleForum Post: RE: PoE PSE Isolated DCDC Converter 12V/48V
Isolation to things like frame ground is necessary. The twisted pair ethernet network itself floats. See IEEE 802.3at or IEEE 802.3-2008 (current revision) clause 33.4. These specifications are...
View ArticleForum Post: RE: bq77910A polling question
Reading the status registers requires setting ZEDE high which minimizes all protection delays. The temperature measurement delay is also minimized so the device current goes up due to the high duty...
View ArticleForum Post: TPS76901-HT Vref value and tolerance
Please confirm the Vref voltage and tolerance for the TPS76901-HT voltage regulator (Actual part TPS76901SHKJ).SLVS959B Revised April 2010 calls out 1.127 voltsSLVS959C Revised April 2012 calls out...
View ArticleForum Post: Shut down of LM3481 not working
Hello TI support,Can you please help me with the LM3481? I still have not solved an isue I have using the Sut down pin. The stepup used is to boost 12Volt to 24 Volts. All works well. But when I...
View ArticleForum Post: RE: BQ77PL900 Shutdown
When you write, you write all bits in the register which are not read only. To change a single bit you will likely want to read the register, modify the bit and set it back. If you remember the state...
View ArticleForum Post: RE: LM3488 Sync to external clock source
Akshay, Thanks for the response and I apologize for my delay. The input to the supply is 3.3V regulated. The output voltage is 12 volts up to 400mA max. My switching frequency is supposed to be...
View ArticleForum Post: UCC28950 VREF OUTPUT NOT CORRECT
Hello,I’m having a little trouble getting the UCC28950 working properly and would like a little tech support. In particular, the Vref output is ~7v, but according to the spec it should be 5v. I have...
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Forum Post: Unable to calibrate BQ78PL116 on one board
Hi,I have a procedure to calibrate the current on my boards. It's a board using a BQ78PL116 and a BQ76PL102 to manage 5 cells. It's been working very well for 3 prototypes but there is something...
View ArticleForum Post: RE: LM3481 shut down not working
Hi Rob,Please upload your schematic and parts list so that we can review your design and provide you with a much better idea of how to move forward.Best Regards,-JPF
View ArticleForum Post: RE: bq27510 and GaugeStudio
Hi Gustavo,1) Yes. The firmware is the only difference between G2 and G3. There was no board re-spin.2) Unfortunately, you will need to re-run a learning cycle on the battery, since some of the data...
View ArticleForum Post: RE: INT- LMZ10503 NOISE ON ENABLE PIN
I agree with you that the magnitude of the coupled noise may vary given how it is probed. The magnitude on your scope shot is higher than what I've seen. I saw peak to peak magnitude about 400mV.The EN...
View ArticleForum Post: RE: What is the best PWM for 200v v to 15v DC to DC at 150C
Hello Ruben,Welcome to the Forum!I'm not sure about a device that is going to operate at that high a temperature. You can always add a heat sink to the top of the IC to dissipate some of the heat....
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