Part Number:UCC28950
Hi,
It is written in the schematics that Disconnect the anode of D25 from the ground and connect it to the anode of D18.
But the thing is that in the CAD file the connection of A-D18 is not there.
So which one I have to follow, the actual available connection in PCB cad file or the one you have mentioned as a note?
What is the importance of this A-D18 connection in a precharge circuit?
Part Number:UCC28064A
Part Number:LM5050-2
Tool/software: WEBENCH® Design Tools
About LM5050-2， whether this pin of nFGD can be used as a regular powergood signal？Because I also need a PowerGood signal from the chip to detect whether the power module and lm5050-2 work properly.
If the nFGD signal is not available as PowerGood，what other devices can you recommend?
Our products are switches in communication products
Our requirements are as follows:
1. Double ac220v-dc12v power supply module input is provided to the main board, whose power is about 25W
2, two input power supply can work in load sharing
3. When one of the two input power sources fails, the CPU on the main board can receive signals (such as power good) to realize the alarm function
Part Number:LM3478Q-Q1
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MOSFET is PD70N1053,Vin 6~16V，Vout 12V or 15V ，Iout=1A。All the devices on the circuit have a serious fever, up to 150 degrees Celsius, and the devices with heat sinks up to 100 degrees Celsius. The following table is the test results, please help to analyze the reasons? What should PCB pay attention to?
Part Number:TLV733P
Hi,
I am planning to use TLV73333PDBVT LDO. As per datasheet Rth JA is 228 c/w. It is also mentioned junction to board thermal resistance is 55.8 c/w. I would like to know what is the preferred copper area i have to provide as my FR4 8 layer board is 1mm thick, in order to get this junction to board thermal resistance of 55.8 c/w. My input is 5V, load is 3.3v, 80mA. Just want to make sure case temperature rise to limit within 15 to 20C.
thanks,Shanoj
Part Number:TL2844B
Dear friends,
I am using TL2844B as a PWM controller IC for flyback design. What is the purpose of having under voltage lockout section in the IC?
Also some current mode controller IC like - FA13844N have two under voltage lockout section. Kindly enlighten me on the same.
If possible also tell me the part number which will be the exact replacement of FA13844N.
Thanks & Regards,
Vedang
Part Number:BQ76PL455A-Q1
Hello,
I have some question about design for this BQ76PL455A-Q1 IC.
1. VP pin：this pin is for internal regulator(A/D), can I use this pin to another IC that the supply current is about 10 mA ?
2. In Daisy Chain structure, VIO pin should connected to the VDD pin which is belong to the MCU.
Is this design for the transmission of TX、RX、WAKEUP、FAULTN signal ? If yes, can I use an isolation IC to transport these four signals, and leave the VIO pin and VDD pin be separated?
3. The use of our product is cell monitor in Automotive, so we should design like the Figure.34 in the spec., how to choose the value of common mode filter、isolation capacitor、resistance ?
By the way, I want to know is there any practical applications on Daisy Chain for Automotive battery monitor about this BQ76PL455A-Q1 IC?
Look forward to your reply as soon as possible, thank you.
Part Number:TPS62148
Hello
I need min and max value of the below parameter. Is it available?
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Also what happens if this negative current limit occurs?
Regards,
Oba
Part Number:TPS7A25
Hi TI,
May I know for TPS7A25, In the datasheet it mention have fixed typed voltage output,so far only can order adjustable type. Does 5V fixed output voltage devices is available?
TI order link: http://www.ti.com/product/TPS7A25/samplebuy
Regard,
ZY
Part Number:BQ24168
Now we have a product that, in the process of charging, no matter how long it takes to charge without prompting.Then we used the development board you provided to test the configuration parameters on the BQ2416X EVM software, but the data we read was IN Ready Battery OVP.No matter how many volts the battery is, the result is the same.We configure the register parameter is {0 x80, 0 x00 to 0 x5c, 0 x8e, 0 x45, 0 x9c, 0 x09, 0 xa9}
Part Number:BQ78350-R1
Hi all,
First of all, I'm very thankful that you have such good support.
We have a battery pack (bq76930+bq78350+10s6p) that has been tested for ESD.
The battery pack did not pass because a short power glitch on PACK +/- switch off the complete system somehow.
After a few ESD shots, the battery was always completely off, as in shutdown. After that I thought that the battery was doing "Voltage Based Shutdown" the "Shutdown Voltage" value was set to 0.The battery was passed with this settings.
I suspect that a partial reset can occur because the lifetime data will not be updated with new data. (Not as in normal shutdown.)
The battery starts normally with "Voltage at TS1 pin> VBOOT".
Our system is designed as here described "Avoiding ESD and EMI Problems in bq20zxx Battery Pack Electronics "
The question is if that happens what I think and why "Shutdown Voltage = 0" can help. Shutdown Time = 10sec.
Thank you for your answer.
Best regards
Adam
Part Number:TPS65381A-Q1
Dears，
I have some questions about TPS65381A-Q1, as below.
1. Because the power supply of CAN is provided by VDD5, how is the CANWU wake-up function implemented?
2. whether TPS65381A-Q1 can reach the ASIL-D level?
3. Can you list some successful cases about the application of TPS65381A-Q1 to automotive brake booster system?
4. Can you provide a reference circuit for braking booster system used TPS65381A-Q1?
look forward to your reply.
thanks a lot.
Part Number:BQ24296
sorry, some qustions about charger design:
our application is kind of a power bank using BQ24296,
USB only charge for one cell 18650, and 18650 only discharge to system when connected through pogo pin
1. do i need additional MCU or other part for this design?
2. can i leave SW and SYS pin floating?
3. how can i design four LEDs to indicate the battery percentage?
thank you.
Part Number:TPS1H000-Q1
hello，TI，
Now，I just using TPS1H000-Q1 for sensor power protection in my product. And for reverse power protection，it gives two methods in datasheet：
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In my idea，put the diode at the output may be more efficient for reverse voltage，but does the DIODE place here could effect the other protections for the device？
Part Number:BQ34Z100-G1
hi,
We have a project based on bq78350-R1 as controller and bq34z100-g1 fuel-gauge.
Currently we program them via a software developed by a 3rd part, but we have suspicion it doesn't work well...
We have about 30 units (out of a first batch of 1500), on which one of this IC's are somehow crashed or are in locked state.
We tried to reset Power Supply on them and "force" program via BQstudio, but it didn't help.
I tested BQ-HI-Production [http://www.ti.com/tool/BQ-HI-PRODUCTION], but it was impossible to run 2 versions of this program (for bq78350-R1 and bq34z100-g1) on the same station simultaneously, so this is not an optimal solution for production line.
Can you please advice us some solution for programming bq34z100-g1 and bq78350-R1 on same workstation?
how can we do that?
thanks a lot in advance
KR
Vincenzo
Part Number:UC2825
One customer is evaluating UC2895, but IC temperature is increase about 70℃（Ta: 20℃ ⇒90℃）.
Please let me know about two points below;
①How to calculate IC's power dissipation
②Idea for decrease temperature (= IC's power dissipation)
Are Vin or fsw decrease, good effect?
UC2895 condition and information are below;
・Vin: 24V, fsw: 100kHz, Duty: 50% (Push-Pull)
・FET: 2SK3608-01S (Datasheet is attached)
(Please visit the site to view this file)
・Diode: RF081M2STR (Datasheet is attached)
(Please visit the site to view this file)
・Transformer: custom
・Any protection function are not detect
・High temperature is only UC2825.
Board, FET, and the other components are not high temperature.
If there need detailed information, please let me know e-mail.
Best regards,
Satoshi
