Part Number:TLV760
Hello,
I have a question if there is any concern on TLV760(Vout=5V) when an use case of the input voltage changing 24V to 8V (8V to 24V as well) in step response is occurred in the system.
I also have another question about thermal protection. It looks from the data sheet that the thermal protection doesn't shutdown the output immediately, is it correct?
Thanks in advance.
Sawamoto
Part Number:LM5180-Q1
Hello Sir,
i'm working on a flyback design with the following spec : 12V to 15V with 250mA in DCM mode.
but i have got confused with this figure : - what they mean with the power rated in this case ?!
Thanks,
Part Number:BQ40Z80
Hi,
There is abnormal operation in charging and discharging.
cell is 6 series 2 parallel and 3400mAh.
Designed capacity is 6800mAh
charge1: charge.csv
FCC is quite different from designed capacity.
Even though long time charging, full charging flag is not set.
Discharge: discharge.csv
remaining capacity goes to 0 from 2807mAh suddenly and FCC is updated from 4301 to 1495.
With continuous discharging, FCC is updated up to 3794.
charge2: charge_1.csv
charging is stopped periodically. CHGC and CTOS is triggered during this operation.
(Please visit the site to view this file)(Please visit the site to view this file)(Please visit the site to view this file)
Dear Teams,
Does TI have a four-channel overvoltage and overcurrent protection chip?
My requirements of the protection chip are listed as follows.
Input voltage range: 2.5v - 5.5V
number of channel: four ports
CC ports can provide 600 mA pass-through capability
Chip protection function: overvoltage protection
The maximum input voltage >=20V
OVP protection point: CC1/CC2: ~6V SBU1/SBU2: ~ 4.5v
Maximum conduction current CC: 600mA
Conduction impedance Ron_CC<500mohm
I looked on TI.com and couldn't find the right chip. In addition, I even haven't found any voltage protection chip with four channel at all.
Dear team, Do you have any chip recommendations?
Regards
LIjia
Part Number:BQ51050B
Hi, I have used the following electical schematic to recharge my LiPo battery. The used coil is WURTH model 760 308 103 206 as indicated in your bill of material
The problem is that to ensure the communication between a standard Qi Tx and my WURTH coil, the distance must be 1 mm or less. This distance is too small. How Can I improve this distance (for example to 4 mm or more) only changing any capacitors.
Becasue of I want to use a 300mAh LiPo battery capacity, can you indicate the correct value of R12, R14 and R15?
Thank you
Vincenzo
Part Number:BQ27421-G1
hello,
Our customer is reviewing if bq27421-G1 turns into Shutdown mode in order to system power consumption minimize.
Is this the effective way to keep accurate Gauging in low power operation. Is my understanding correct all of the leaning data is initialized in such use case and it results from inaccurate gauging in the end.
best regards,
Part Number:PTV03020W
Hi,
Can I have the PCB footprint for PTV03020WAH module? by looking at the datasheet picture and the actual PCB, found 2 additional parts, not sure any impact and what is it for?
what are the change involved and purpose of R200 and the capacitor in circle below?
Best Regards,
kpk
Part Number:BQ27421-G1
hello,
our customer would like to know how GPIO pin is functioned for SHUTDOWN to POR transition.
Does he have to input GPIO=High for at least 200us in order to transit POR state from SHUTDOWN.
best regards,
Part Number:BQ51050B
Hi, I have used the following electical schematic to recharge my LiPo battery. The used coil is WURTH model 760 308 103 206 as indicated in your bill of material
The problem is that to ensure the communication between a standard Qi Tx and my WURTH coil, the distance must be 1 mm or less. This distance is too small. How Can I improve this distance (for example to 4 mm or more) only changing any capacitors.
Becasue of I want to use a 300mAh LiPo battery capacity, can you indicate the correct value of R12, R14 and R15?
Thank you
Vincenzo
Part Number:UC3846
1. As per frequency calculation formula for uc3846 our circuit output should be 20KHz but we were getting 16.5KHz.
2. Now, considering 16.5KHz we were using this circuit but within last year we observed that with same value of Rt and Ct, for some ICs frequency is reduced more than 16.5KHz like 15.5KHz to 14.5KHz
Part Number:BQ34Z100-G1
Hi Team
My customer using two BQ34Z100-G1 in their board for gauging two 10S4P 9600mAh battery packs.
After configuring the bq34z100, the customer has noticed that the battery reading is not correct.
please find attached two charging logs and you can see how the SOC reaches 76% it jumps to 100% and also the current charging drops before time.
(Please visit the site to view this file)
(Please visit the site to view this file)
could you please advise what can cause this issue and how we can solve it
Secondly, could you please advise if this device has an additional safety feature to limit the battery output current?.
Thanks in advance and regards,
Shai
Part Number:TPSM84624
Hi team,
About UVLO function, could you give me equations to decide R_UVLO1 and R_UVLO1?
Regards,
Saito
I have a question about a reference design called PMP11186 .This design outputs two voltages, one positive and one negative.The negative voltage is abnormal.When the negative voltage is in no load, the absolute value of the voltage is low. And it is easy to be pulled down when the pumping load is large.
Part Number:TPS73601-EP
Hi,
i have used TPS73601 DCQ package in my project. i amnot able to find the layout recommendations for this package in the datasheet.
Please provide these details.
Thank you
Ishank varshney
Part Number:BQ27411-G1
Hi,
According to Table 6-3 (bq27411-G1 Technical Reference SLUUAS7B) that describes subclass 80 (IT Cfg), parameters from "ResRelax Time" to "TermV Valid t" should have offsets 48-76. But bqStudio uses offsets 50-78 (+2) for them.
So the question is which offsets are correct?
There are also undocumented registers: "Qmax max delta %" and "Max % default Qmax" (exist in bqStudio but not in pdf), and documented register "Fast Qmax Volt buffer" that cannot be edited by the application.
Are they important for correctly working IT? If so, what values (and offsets) should they have?
Thanks
HI TI guys:
Recently , we design a battery PCM test , our custom told us that need
Refer to Texas Instrument’s document, SLUUBS9 SN27744-A1 TRM for calibration instructions.
we can't find the key words with SLUUBS9 SN27744-A1
Can your guys give me some help
Thanks.
