Part Number: TLC59116
Hello,
for my application I need an opportunity to premenently switch on a LED in an emergency case in parallel to the TLC59166 LED Output.
Can I simply connect a transistor plus resistor to Ground in parallel to a LED Output?
kind regards.
I discovered this part which could inprove the circuit in my aplicatiion for positive supply.
I now use a current source to protect against wrong cable connection in my sypply..
This Efuse like (TPS26623) could do this job in a smaller size and more efficient.
But Is there an application for use of Efuses in an negative supply rail?
For a current source circuit this is easy.
Part Number: BQ35100
Dear,
In real application of BQ35100, will calibration is a must step?
What is the purpose of calibration?
In production, how to implement the calibration step if it is a must?
Thanks.
Part Number: LM317
I have a product using a LM317 using a simple circuit like below:
It uses a 24V battery as source (between Vdd pin of circuit and ground of circuit), and output is 12V.
When the circuit is working at steady state and loses the connection with battery ground all battery voltage goes to the Load
I need to protect the load under this circunstance.
I thought about 2 option, stop LM317 from conducting or adding a switch at output (Vout pin from LM317), first option I think is not possible and second one I tried a P channel mosfet, it works but it is not fast enough to avoid 24 V at load before it cuts off the output connection.
There is anything I can do to accomplish this need without changing LM317 to another component?
Part Number: LM73606-Q1
Hi team,
I wondering is that possible for LM73606-Q1 to have reverse voltage protection in the input node? Such as +12V car battery connected to PGND pin, and PVIN connected to GND panel?
Thanks
Part Number: BQ40Z50
Hello - I am performing qualification testing on my BQ40Z50 board. I did a learn cycle and that seemed to go good, but the FCC was a lot lower than the cell. When I charge from shutdown the Remaining capacity does not start counting for 13 minutes or after 500 mAh was placed into the pack. I have attached my log file for the run and my gg.csv file. If you look at chart 2 in the XLSX file you will see where the Remaining capacity doesn’t start counting right away. If you go to the data file you can see at Excel row 212 that the cell voltages are about 3.480’ish when counting starts. Can you help me determine what settings could be causing this. FD, TD, etc.? Thank you.(Please visit the site to view this file)(Please visit the site to view this file)
Part Number: LM73606EVM-5V-400K
Hello,
I plan to use the LM73606 in my next design.
Are the CAD files used for the evaluation module available? I think it was done in Altium. That would be very helpful.
Regards,
Grace
Part Number: BQ40Z50
Tool/software: Code Composer Studio
Dear :
there is a question when the" Remaining Capacity "rise up to " Full charge Capacity ",then the data of " Remaining Capacity " cann't rise ,
but we can see the " True Rem Q" is sising when charging is going on.
so please tell me the reason.
Bruse
Part Number: TPS54386-Q1
Hi
We have a design for automotive. When we test EMI performace, it failed. Below picture are the testing result and schematic. Can you give some advise ?
Ａnohter, if L30 & L31 instal ferrite bead, the system can't operate. But it is ok when it install 0 Ohm resistance.
Part Number: BQ34Z100-G1
HEllo,
I have a fuel Gauge configuring with a LI-ion Chimi and when I see the parameter of the gauge, I have PB TEMP GAUGE is at 0.128% The datasheet indicate that the range of this parameter is 0 to 0.078125%.
can you tell me why I can have such value.
Sincerely
L.MICOU
Part Number: LM5085
Hello team,
my customer started working on the EVM of the LM5085.
"C2 (Cac) is then chosen large compared to C1, typically 0.1µF. "
It is not clear how to calculate the 3 components using the datasheet formulas, example:
R5 20mR
R3 2.4k
R4 390k
R2 549R
L1 33uH saturazione > 5.8A
R7 26.7k
C9 3.3nF
C10 33nF
C6 C7 generici 100uF 105° 50V low esr
Could you please help us to clarify this situation?
Thank you in advance for your support.
Best regards,
Adrian
Part Number: TLC59116
Hi
Please help me use the current regulation, it does not seem to be active.
From the datasheet it appears to me that using an external resistor on IREF (we use 931 ohms) should result in appr. 20mA LED current with the default register settings. However, I can't get the device to regulate the current at all.
I want it to cap the output current at 20 mA, but I can set the dimming PWM registers (and the GRPPWM) to values which lead to higher currents - mainly limited by my external supply capability.
When writing to the IREF register, the device seems to ignore it completely, as if the current regulation is not active.
I understand I can not set the LED to "fully on" in the LED Output State registers, so that's not the issue.
I'm using '11' for the LED Output State X which should be the correct state for using dimming/blinking functionality.
How do I set up the part to enable the current regulation?
// Daniel
Part Number: TPS7A78
Hi, Team,
I have 2 questions for TPS7A78.
1. Can TPS7A78 support the below DC input condition?
Vin：～190Vdc
Vout：6V？
Iout：～0.1A
2. Is it possible to use TPS7A78 for 100Hz~900Hz AC power?
Best Regards,
Satoshi Yone
Part Number: UCC2889
Have several questions on the UCC2889.
Using the UCC2889 as the controller in an offline bias supply in dual flyback configuration, similar to app note u-149. In the application, line voltage range is 600 - 1500V. Setting Ron so that minimum current into Ton is greater than 220 uA, but UCC2889 still goes into line voltage fault mode with .5msec off time pulses.
1st question, what is the minimum current into Ton pin for IC to operate and not be in line voltage fault? Should current be sum of startup current and the minimum i (Ton) current for line fault?
2nd question, if the VCC pin is connected to an external voltage, why does the Ton period change compared to when the VCC pin is only connected to a bypass cap?
3rd question, when the controller is running, why would the measured voltage across the output cap in 1st flyback stage be twice the calculated voltage based on the vout = vin*d/(1-d)? The calculated voltage is 85V and the measured voltage is 130V. Let me know what info on the setup is needed to address these questions.
Hi team ,
Can TI offer rohs2.0 document ? I can only find a rosh1.0 document for all partnumber (See attachment) . Thank you! (Please visit the site to view this file)
Part Number: TPS54302
Equation 14 states that it should be 40kHz or lower, but if C6 is present, can it be 40kHz or higher?
I want to use Cout = 44uF and Vout = 1.15V(R2=10kΩ).
→fo=100.8kHz.
Is it okay if C6 is around 1579pF?
Part Number: BQ34Z100-G1
I see abrupt changes in SoC, SoH, temperature, current and voltage. Below is FuelGauge trace from my equipment
Qsns
1. What could cause below abrupt changes in SoC, SoH, temperature, current and voltage?
2. We can reproduce this reliably in 4-12 hrs span. What other parameters from bq34z100-G1 do you want us to record that may help with investigation?
3. I have two other devices on same I2C bus as bq34z100-G1 (total 3). Is this okay?
4. Can I issue reset 0x0041 command when I see SOH = 0 or cstatus=0? Is there a better indicator of FuelGauge fault that warrants a reset 0x0041 command?
"10/21/2019 6:58:01 PM",vbat = 12056, ibat = -131, temp = -33.15, soc = 26, soh = 100, rcap = 135, fcap = 528, avgcur = -116, cycles = 8, cstatus = 0005
"10/21/2019 6:58:02 PM",vbat = 12000, ibat = -131, temp = -33.15, soc = 26, soh = 100, rcap = 135, fcap = 528, avgcur = -117, cycles = 8, cstatus = 0005
"10/21/2019 6:58:03 PM",vbat = 11964, ibat = -121, temp = -33.15, soc = 26, soh = 100, rcap = 135, fcap = 528, avgcur = -118, cycles = 8, cstatus = 0005
"10/21/2019 6:58:05 PM",vbat = 14400, ibat = 0, temp = 19.85, soc = 0, soh = 0, rcap = 0, fcap = 4500, avgcur = 0, cycles = 8, cstatus = 0000
"10/21/2019 6:58:05 PM",vbat = 14400, ibat = 0, temp =19.85, soc = 0, soh = 0, rcap = 0, fcap = 4500, avgcur = 0, cycles = 8, cstatus = 0000
"10/21/2019 6:58:06 PM",vbat = 12052, ibat = -112, temp = -33.15, soc = 0, soh = 0, rcap = 0, fcap = 375, avgcur = -7, cycles = 8, cstatus = 0005
Part Number: TPS562231
DCAP3 improves line and load regulation over DCAP2, but are there application choices that can optimize the regulation even more?
For example, how does the value of the inductor effect line or load regulation?
Any other external configurations to think about?
Part Number: BQ24195
The reference design (EVM board PWR193) uses 22 uF ceramic capacitors C4, C15-C18. Since they are biased at 5 V, the actual capacitance is likely half of the rated one. In addition the ceramic capacitors have piezo effect and can produce high pitched sound.
Is there any reason tantalum capacitors should not be used? I have substitutes tantalum 22 uF 10 V caps on one board and they appear to work just as well.
Thanks.
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