Forum Post: RE: bq77910A- Current Measurement resistor
First check your differential voltage level at the SENSE pins to be sure it is what you expect. The part detects the voltage at the pins, not the actual current. It can be difficult to get a good...
View ArticleForum Post: RE: suitable dcdc converter to replace the existing LM7805 ckt.
Possibilities8-18V in5Vout @ 500mA You could try a DC/DC module like the LMZ12001. It has a 20V input voltage and would have good thermal properties and not be much harder to use than the Regulator...
View ArticleForum Post: RE: TPS61251 problem in 100% duty cycle mode
One other thing you might try is adjusting the value of your feedforward capacitor. Since you increased your FB resistors (too large, by the way), you should decrease the Cff to keep the compensation...
View ArticleForum Post: RE: TPS7A4001 / direct connected Power Pad and GND ?
Ryuji-san,I have verified, the GND pin is internally directly connected to the PowerPAD. Regards,Kartik
View ArticleForum Post: UCC2804 Note Question
Can someone clarify note 2 with respect to the Vcc voltage on the UCC2804 datasheet page two ? I am getting hit by reliability because we have 11.74V on the Vcc pin. They way I read this note is...
View ArticleForum Post: RE: TPS53219/ TPS53219A
Hi Kai,Please contact Sue Xu(xiao_xu@ti.com) directly. She is supporting this part now.Thanks,Nancy
View ArticleForum Post: RE: LM5119
HiElectrically, your connection is right , but by connceting SW node to GND, LM5116's dead-time might be affected, the dead-time have to be guaranteed by UCC27211 operation. Diode emulation will not...
View ArticleForum Post: RE: Difference between LM25118 LM5118 and functional difference...
Thanks for the prompt reply.
View ArticleForum Post: Isolated DC/DC power supply
I have been told that TI has an old Burr Brown part that is a 5V input, 5V output 2W isolated supply. Something like part number DCP020505P only with regulation. Does TI have something like this or...
View ArticleForum Post: RE: TPS79333 Output shorted to Input
Oscar,At this point I will advise you to please submit the failed units for Failure Analysis. Please fill up the attached form and ship according to instructions mentioned in the attachment as well. It...
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Forum Post: bq76PL536 reverse voltage protection
Hi,I'm implementing an uninterruptable power supply design with a 60s2p, 240V Li-Ion battery stack. There are 12 bq76PL536 BMU ICs, with a 5s2p configuration per BMU. Some current will be drawn from...
View ArticleForum Post: RE: LP2954IMX SENSE and 5V TAP pins
Excellent. Thank you for the quick replies.
View ArticleForum Post: RE: LMZ14203H Inverting Design
The TPS84259 would also be a good candidate for another part to look at. It is a positive to negative converter at two amps.You could also try the LM5576 in an inverting configuration. It is a 75...
View ArticleForum Post: RE: Broken Mathcad link - "Nation Input Filter Design for...
Thank you Jefferey, Hopefully this is enough to locate the documents. Marc
View ArticleForum Post: HVPSFB main.c
Hello, in the code of main.c, TI's HVPSFB kit,on line 173:volatile long VfbSetSlewed = 4187136; // Slewed set point for the FB voltage loop - start from 4VHow did you get this number from 4v to...
View ArticleForum Post: UCC28251 current sharing
Hello,I have a question regarding using the UCC28251 controller for Half –Bridge with synchronous rectification.Can I connect the outputs of multiple converters in parallel for current sharing (with no...
View ArticleForum Post: RE: UCC28950 VREF OUTPUT NOT CORRECT
It would be best to put a SCHOTTKY diode clamp from CS to GND.Cathode to CS, Anode to GND.Don't let it get below -0.3V.The input impedance of CS is not specified, however it would be quite high.Figure...
View ArticleForum Post: RE: BQ34Z100 and CHEM ID
I am also using the bq34z100 and am trying to figure out how to extract the ROM file. I downloaded bqMTest using the link provided but the bqTester ROM imager does not show the bq34z100 in the list...
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Forum Post: RE: UCD9090 - UCD90SEQ48EVM-560
Have you tried changing the Vout Exponent to -9 or -8?
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Forum Post: RE: BQ2002T Unknown state between Fast Charge and trickle
I populated a board with just one bq2002T, trying to charge one 9V battery.It looks like it is a threshold problem with the combination of the bq2002t and the battery. If the battery doesn't fully...
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