Part Number:TPS2663
Hi Team,
The TPS2663 EXCEL TOOL cannot modify the minimum input value (customer 's input is 5V), could you offer a new one available?
Thanks,
Yang
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TPS2663: TPS2663 EXCEL Tool
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TPS65150: FDLY pull-up voltage
Part Number:TPS65150
Hello
If FDLY could be connect to external voltage which was not same with Vin ? example, FDLY connnect to VDD_3.3V, while Vin is connect to 5V.
My customer did this, FDLY connect to VDD_3.3V, Vin connect to 5V. but under this condition, the VDD_3.3V changed to nearly 4V
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LM5115: How to select current sense resistor
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BQ40Z80: BQ40Z80 register
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BQ25713B: Why not describe the difference between the BQ25713 and BQ25713B
Part Number:BQ25713B
Venting: I just spent an hour looking for the differences between the two devices. I found the difference and confirmed it is the only difference in the forum.
What is not clear is why the !@#$%^ did you not write this simple difference in the description instead of leaving it as an exercise to the reader??
Answer not really required.
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BQ28Z610: Disconnect VC2 for low power
Part Number:BQ28Z610
Hi all,
Customer want to disconnect VC for low power dissipation. So they add a control switch at the VC2 end (attached figure below, R97 DNI). When power saving is needed, the switch will be switched off and switched on again when working.
1. When the switch control VC2 power on, the gauge can also give the accurate battery data?
2. If yes, how long will it take to repower the VC2 of gauge that can output battery data?
(Please visit the site to view this file)
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LM5060: LM5060 burned
Part Number:LM5060
Dear TI Experts,
I am using LM5060 ,and find that LM5060 is burned when it was switching the enable pin on or off, which also caused the MOS break down~
The load current is about 60 A,the output voltage is 48V
The schematic is as followed, the mosfet I am using is ixfn420n10t,100V，420A,Rds 2.3mΩ
looking for your suggestion,thank you very much~
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BQ25606: Quiet current consumption of BQ25606
Part Number:BQ25606
Hi Team,
Could you please help confirm if the current consumption is 1.5mA when there is no load and the battery is fully charged?
Thanks a lot.
Best regards
Chen
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UCC27526: Driving two CSD19538Q2 with UCC27526 - finding gate resistor
Part Number:UCC27526
Hello,
I need to drive two CSD19538Q2 which need to make switch ON and OFF as fast as possible with pulse duration of 60ns. Pulse duty cycle is around 0,1% and MOSFET Vgs is 38V with pulsed Ids is max 30A.
Now, I want to drive those MOSFETs with UCC27526 but have no idea, what Rgate should be (resistors between driver output and MOSFET gate).
Will you be so kind and help me with this issue? Thank you.
With best regards,
Andrej
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BQ27510-G3: if this device is recommended for new design
Part Number:BQ27510-G3
Hello team,
my customer has started a new design and he selected BQ27510 as a candidate for evaluation of battery fuel gauge (single cell) with the following Key specifications below.
Since this part looks a bit old, please advise back if this device recommended and/or there is a better candidate for this job?
Key specifications:
- Single cell Li-ion support.
- Impedance track algorithm based.
- Panasonic’s NCA103450 cell parameters model exists and available for loading to flash
- Not a BGA part, no need for micro vias.
- I2C host communication , system side
- Raw current, voltage and capacity data.
- % SOC calculation algorithm, can be auto calibration free.
Thanks in advance
Best regards,
Shai
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TPS92692: TPS92692: Buck-Boost or Boost?
Part Number:TPS92692
I'm doing two projects using tps92692. I have a question if I should use them in the buck-boost or boost configuration?
Project 1:
Input:
Vin: (Min: 6V-Typ: 12V-Max: 16V)
Output:
3 LEDs in series
VLED: (Min: 2.75V-Typ: 3.25V-Max: 3.55V)
Vout: (Min: 8.25V-Typ: 9.75V-Max: 10.65V)
I LED output current: Typ: 1A - Max: 1.2A
Project 2:
Input:
Vin: (Min: 6V-Typ: 12V-Max: 16V)
Output:
2 LEDs in series, but sometimes only one will be active or both will be active. For this I will use a FET.
VLED: (Min: 11.6V-Typ: 13.6V-Max: 14.8V)
Vout with 1 LED active: (Min: 11.6V-Typ: 13.6V-Max: 14.8V)
Vout with 2 LEDs actives: (Min: 23.2V-Typ: 27.2V-Max: 29.6V)
I LED output current: Typ: 1A - Max: 1.2A
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TPS65094: SN9039 where to buy some parts for hardware prototype?
Part Number:TPS65094
I 'm designning an PCB prototype with CPU cherry trail T3 X5-Z8350, PCB design allmost ready now but i cann't find out where to buy some PMIC parts: SN9039, any body can help me, thank!
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TPS62242-Q1: Calculating output voltage ripple in PFM mode
Part Number:TPS62242-Q1
Hello,
I am interested in using the TPS62242-Q1 to power an IC that needs 1.2V +/-5% input. I am trying to determine if the voltage ripple on the output of the TPS62242-Q1 will violate that. Equation 5 in the datasheet tells how to calculate voltage ripple:
Following that equation, I calculated a ripple of 5.185mV when Vout = 1.2V, Vin = 4V, L = 2.2uH, F = 2.25MHz, Cout = 10uF, and ESR = 0.025 ohms.
However, it is my understanding that this equation is only applicable when the device is operating in PWM mode. Since it looks like the ripple in PFM mode will be worse, I'm interested in calculating that as well. The datasheet talks about a PFM comparator threshold and an on-time that it turns the switch on for, but does not mention any specific time. Can someone offer some guidance on how I can predict the maximum voltage ripple in this use case?
Thanks!
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LM5085-Q1: PMP7767 CAD file request
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BQ25703A: Seems there is no external pin to connect NTC, so how to detect temperature at the battery side
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BQ27421-G1: BQ27421-G1DEVM
Part Number:BQ27421-G1
Hi Expert,
After done the CHEM ID, the report showed D version(3142) accuracy is good than others. But TI didn't provide the D version EVM. Can you guide me how to do it? Thanks!
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BQ76930: Balancing external
Part Number:BQ76930
HI,
IN SLUUB41.PDF
9.7 Can the bq769x0 support external balancing? Yes, external N-channel or P-channel FETs may be used. This allows maintaining large input filter resistors for better transient filtering. The system designer should be aware that some combinations of balancing may not work with external balancing.
For BQ76930 in a 7 Li Cell , balancing Reg 0x01 and 0x02 reset to 0x00. I'm using P-Channel FETs with 100 Ohm Resistors (see schematic) when I read Cell 0 (0x0C) I read Half the true Voltage.
I'm unsure wether the port outputs a 0 or whether it disables internal drive to the port as I cannot find much info on this. In any case to turn on the Fets I need a 0 drive for P- Fets and a 1 if I had used N -Fets.
Because the note says not to balance adjacent Fets and if the drive is 0 at operation, is it possible the device has been damaged by these settings?
Regards,
Tom
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TPS54232: lower cost solution for inverting buck solution
Part Number:TPS54232
Dear expert,
My customer is looking for 3.3V~6Vin to -6Vout@100mA solution.
The lower cost one I found is TPS54232.
We face to one of our competitor now, so I would like to double confirm with you if there are any solution which with lower price.
for more detail information, please contact with me and we can discuss offline. My email address: benkuo@ti.com
Ben
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TPS3813-Q1: Manufacturing Tolerance Limit of Min and Max value related to Window Frame
Part Number:TPS3813-Q1
Hello Support,
For WDR=WDT=0V, the value of WINDOW FRAME tolerance is 0.2 to 0.3 sec due to manufacturing as well as temperature/voltage variations across various sample devices.
Question is, this statistical measurement of value was performed for how many sample devices and is it guaranteed 100% for any end-user sample devices due to Normal Gaussian Distribution?
Or, is it for 99% end user sample devices?
Rest of the ends user 1% devices might fall outside this range of 0.2 and 0.3 sec WINDOW FRAME?
Which one?
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TPS562219A: A drop at ~20KHz in bode plot
Part Number:TPS562219A
Dear expert,
We measure bode plot for close loop stability for TPS562219A.
But there is a drop around 20KHz, May I learn from you how to improve this drop?
Schematic and bode plot are in attachments.(note: R315 have been change to 20-ohm)
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