Part Number:UCC2813-5-Q1
Hi team,
Can you please check what is the thermal performance of UCC2813-5-Q1? The datasheet is too old it did not show any RθJA or RθJC, can you provide thermal information for UCC2813-5-Q1 in tabular format:
Many thanks.
Best Regards,
Wei-Hao
Part Number:TL1963A-Q1
Hello ,
I am looking for some informations regading the process FAB Technology of the TL1963A-Q1 :
-The Mask SET / The die Revision .
-How we can get easily the FAB Site / The Diffusion Lot /the Wafer N°
Those requested datas are very crucial and key informations , as we will have a new market > 10 K PCES / Year . Tanak you in advance for your support .
Best regards .
Part Number:TPS61085-Q1
Hi team
My customer want to review schematic of TPS61085-Q1.
It is confidential, so I want to discussion through private messages.
Thank you.
Part Number:TLV733P
Dear Sir/Ms.
I got RT9078 replacement inquiry. I found that TLV73318PDQNR and TLV73325PDQNR can replace it.RT9078 support discharge function. Did TLV733P can support discharge function?
If TLV3318PDQNR don't support discharge function , would you please give me some advice?
Best Regards,
Kami Huang
Part Number:BQ76200
Hi,
We have prepared a power path circuitry for a battery management system using the bq76200PWR. Schematic follows below:
Complaints with Turn-on
The turn on characteristics when C122 = 0.1uF:
CH1: TP53 - TP10
CH2: TP69 - GND
The turn on characteristics when C122 is removed, the voltage dip on TP169 has increased:
CH1: TP53 - TP10
CH2: TP69 - GND
The turn on characteristics when R116 is removed, the Vgs has an acceptable rise time. What is the limitation of that causes this slow turn on to happen when the FETs come into picture? I have also tried increasing C122 to 2.2uF, with no improvement in the turn on time.
CH1: TP53 - TP10
CH2: TP69 - GND
Complaints with Turn-off
A similar issue is observed with the turn off of the FETs. It is seen that the turn off is not rapid. (Tfall < 500 ns). Based on the documentation, it is to be noted that the turn-off time is dependent on the value of R108 and C100. Tuning this value to R=10 ohm, C = 0.01uF does not change the turn off time either.
Because of this, the FETs are not able to sustain a direct short at the battery pack level, and are failing due to SOA breach. Can you provide recommendations to:
1. Reduce tf (Fall time) while turn off
2. Have a cleaner turn off without artifacts (Reduced rise time)
Thanks
Part Number:TPS22953
Dear *,
we would like to add a hysteresis to the SNS or EN pin of the load switch.
we want to achieve following functionality, when the out voltage is falling and reaches 3.4V then the load switch must turn OFF, and then when the out voltage is rising we want to turn it ON when it reaches 3.6V
Is is possible to add this functionality to the TPS22953 load switch?
Best Regards,
David.
Part Number:BQ78350-R1
Hello,
I am having an issue with the fuel gauge bq78350. Let me explain :
When the battery (li-ion, 14s, 48V) stays in idle mode for a certain time, the SOC reaches 100% and the TCA (terminate charge alarm) bit activates. This can happen even when the battery is totally discharged...
Do you have an explanation on why the bq7350 displays a SOC that is totally wrong ?
Is there a possibility to change manually the SOC to set it right ?
If no, is there a possibility to do something to reset the SOC ?
Thanks for your help on that topic.
Regards,
Part Number:UC1854
I need to design a conduction cooled 3-phase 400 Hz 300W PSU unit with multi voltage outputs these are :
Voltage (V) | Current (Amps) |
3.3 | 30 |
5 | 10 |
12 | 5 |
15 | 3 |
-15 | 0.5 |
I came across the UC1854 and TIDA-010015, would you recommend this and is there any reference design or application note that could help?
Part Number:TPS53647
We are using the TPS53647RTAR part in our design to provide VDD core supply for our multi-core high speed processor.
Input = 12V
Output = 0.85V @ 50A
We are using only two phase in design.
The ripple noise requirement is 2-3mVp-p maximum.
What is the maximum ripple noise that will be generated on the output of the module?
Our schematic is attached:-
(Please visit the site to view this file)
Part Number:BQ24600
Hello,
I'm currently in despair with my charger-board design.
First I connected: PowerSupply => Charger-Board => BMS => Battery (6 Cell 10Ah)
Result: Charge-Current 300mA instead the adjusted 3A; BQ24600 was quiet hot.
But PG was blinking and STATE lights.
Then I decided to remove the BMS (maybe would thate be the problem) and connected the Battery directly (power supply removed).
Short Bang and the BQ24600 had died.
I'm confused, I don't know how I can search the mistake - there's no time for meassure... I think there is no error in the circuit - maybe it's a bad pcb-design?
Hope someone have an idea.
Here my EAGLE-Files:
(Please visit the site to view this file)
Part Number:BQ27520-G4
Hi expert,
Customer has a question on bq27520 I2C Bus. They found out there is a case that I2C clock would be pulled low and need to reset then it can be used again. Would you kindly help to let us know the condition which will cause I2C Bus Clock low always? Thanks a lot!!
Best regards,
Ann Lien
Hello everybody;
I need a low-power dc/dc converter with high isolation voltage between the primary and secondary-side of the switching transformer. The input voltage is 15V while the output voltage equalizes to 25V. The output power is around 5W. I decided to design a DCM Flyback dc/dc converter due to its simplicity and cost. As far as I understood, if I could make a distance between the primary and secondary windings, maybe, I can reach to 10kVrms isolation. Now, there are two questions as follows:
1- Can I use the EFD ferrite core with the below bobbin?
2- Is this type of bobbin in contrast with the Flyback operation?
Thanks.
Part Number:LM5088
The LM5088 is violently self destructing occasionally when the board is powering up - usually when under load, powering multiple small 12V DC motors. We have another product in production that uses this same schematic to do the same function but that is a 4 layer board and this new design is a 2 layer board. (Note the Schematic calls out the -1 chip in error. We always use the -2 chip, on the existing product as well as this new prototype design.) The damage is always in the upper left corner of the chip approximately 2mm from the top and left sides. What part of the circuit is in that section of the die? The supply to the circuit is a rectified (half bridge) 24Vac or about 34Vdc. Any help anyone can provide to help me understand why this is happening would be appreciated.
The pins closest to the damage are Vin, EN, and SS. The Vin is a half wave rectified 24Vac to about 34Vdc. It has a 60V MOV and 2 470uF Caps. So I don't see how it can be getting over voltage to cause such damage since the lm5088 is rated to 75V.
Part Number:UCD3138128A
Hi ,
I want to know if there is a way to support AVS PMBUS in UCD3138128A.
If yes, is there any sample code to be referenced ?
Part Number:UCC28950
I am using a custom transformer according to the calculated values.
The thing is that because of some extra number of turns the primary magnetizing inductance seems to be 4.6mH instead of calculated 1.8mH.
Is this can create an issue? Because it seems to be failing while increasing the loads.
Regards
Nidheesh.
Part Number:LP8863-Q1
Dear mr, mrs,
I want to use the LP8863 but need also a (little) higher output voltage then the 47V. It should be 53V.
Is it possible to use an external power supply at 53V and set the LED_EXT_SUPPLY bit?
As the application is for a multiple led control with all kind off different led configurations this IC is right for 90% of the applications.
Thanks,
Part Number:TPS62742
Hello,
I am using TPS62742 for a battery operated circuit. The battery is single cell lithium thionyl chloride rated at 3.65V. My output voltage is 3.3V with a maximum output current of 150mA.
Is 3.65V input voltage a safe range for such an application?
I am asking because, in the datasheet (typical application circuit), the input voltage range is 4 -- 5.5V for a 3.3V load. However, in several graphs and from the Webench application circuit, a delta of 350mV is permissible.
Please let me know if such a system would work or is prone to failure.
Please find attached my reference schematic.
Thanks (Please visit the site to view this file)
| TPS62742DSSR |
