Part Number:LM5170-Q1
Hi Team,
I need to use MCU control Soft Start by ISET Pin ,
How do I choose the suitable capacitor for SS pin?
Best regards.
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LM5170-Q1: LM5170-Q1 Soft Start Function
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BQ78Z100: Why the newest battery manage studio do not support 1100_05 firmware?
Part Number:BQ78Z100
The newest firmware is 1100_0_05,
How can I get the 0.06 firmware or battery manage studio to support 0.05 firmware?
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TPS24750: TPS24750 : How to Release Current Limit.
Part Number:TPS24750
hi
i want dont use current limit.
how to set release current limit.
ex) Rsens =0 ohm
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TPS7A16A-Q1: Does TI have compatible parts to maq5281?
Part Number:TPS7A16A-Q1
hi Team,
does TI have similar parts to the maq5281? DS available online
key features
input 6~120V
automotive qualify
consumption 6uA
Thanks
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TPS55165Q1-EVM: TPS55165Q1-EVM Schematic question
Part Number:TPS55165Q1-EVM
Hello TI;
We have some TPS55165Q1-EVM, and we need to use this regulator as buck-boost to generate 5V (300mA) based on an input Voltage range from 3.5V to 9V.
We are using the User's Guide (SLVUAY1–November 2017).
There is a "Figure 3. Schematic Diagram—No Variations
And there is also "Figure 5. TPS55165Q1-EVM Schematic Diagram—Assembly Option".
1-Which one should we use as reference for the actual EVM?
2-Which one should we use as based to based our schematic for the requirements described above.
3-Why is there a difference between these 2 schematics?
3a- Why are the diodes and other components of Figure 3 removed in Figure 5?
3b- Not having these devices , could cause a mal function or performance degradation of the regulator?
Regards;
Thanks
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TPS92682EVM-070: Magic smoke on first run with LED load
Part Number:TPS92682EVM-070
Hello,
it seems my brand new EVM died directly after setting the 'Channel 1 Enable' checkbox in the Demo Software. I smelled some magic smoke which came from the TPS92682, I think. After I immediately shut off my power supply, I realized that I activated the Constant Voltage Mode by accident. Please see the attached screenshot, it has been taken directly after this. Can you please confirm, could this be the reason for killing the board?
I think this checkbox has been accidentally activated, because the software crashed just before this. Here on my PC I can let crash the software immediately by moving the 'CH1 PWM Duty' slider by mouse. So I can adjust the PWM Duty only very slowly by the cursor keys.
Currently I read from all chip registers a value of 0xFF so I really think, the chip is dead. However, with the schematic in mind I can't imagine how a suspected wrong register setting could make that happen. Please clarify!
Thanks and Best Regards,
Andreas Lindner
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TPS53622: TPS53622
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BQ76940EVM: Is BQ78350 is necessary for BQ76940 incase using BQ769x0 evaluation software?
Part Number:BQ76940EVM
I read there are two ways for programming in BQ76940. One is BQ769x0 EVALuation software and second one is BQStudio. Is both the softwares requires BQ78350 IC or only BQ studio requires it? And if it required for BQ769X0 software also requires BQ78350 Ic then is it possible to store the data in BQ76940 itself for further monitoring?
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Cell balancing for Ni-MH battery in series
Hi,
I understand that the charger IC for Ni-MH can charge multi-cell Ni-MH battery but don't have cell balancing feature. Then do you have any idea or example circuit to add cell balancing feature externally?
Best Regards,
Satoshi
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UCC27200: Output High and Low side MOSFET RDS on
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LM5176EVM-HP: LM5176 EVM test problem
Part Number:LM5176EVM-HP
Hi Team,
LM5176 EVM test problem.
1. Vin12~13V to 12Vout will have high gate blanching, current about 5A.
2. Vin under 11V measures Q5 as shown in the figure. high-gate does not switch on . At this moment, Q5 will heat up and the voltage will flow from the body diode.
3. Vin 13 above measurement Q5 is shown as high-gate switch on.
Is this blanching normal phenomenon? How to improve? thanks
Sincerely
Kevin
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CSD19535KCS: How Ambient Junction temperature is maintained while testing
Part Number:CSD19535KCS
As per the datasheet Rds(on)max=3.6mOHM with test condition like Id=100Amp.
If i allow to flow Id=100Amp continuous from MOSFET with Rds(on)max=3.6mOHM then i would have to dissipate Pd=36W(Pd=Id^2 * Rds(on)).
Now if i calculate Tj(Junction Temperature) without heat sink for above condition.
Tj=(Pd * Rtheta(ja)) + Ta,
=(36W * 62deg C/W) + 25deg C,
=2257deg C,
So without heat sink i can not even dissipate Pd=36W of power from MOSFET because, Tj would be out of specs.
I would like to know how TI has managed Tj within safe limits?
What different techniques is followed while testing this product?
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LM5116: CVCC Control like LM5117
Part Number:LM5116
Hi team,
We are looking for devices with CVCC control, such as the LM5117.
We have used the LM5116, and we would like to use the LM5116 to control CVCC if possible.
Can I use the LM5116 with CVCC control by adding external components etc?
We will connect an external amplifier output to 9-pin COMP. Is this possible?
I think it would be possible if there was a way to stop the error amplifier.
Best regards,
Tomoaki Yoshida
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WEBENCH® Tools/BQ76PL455A-Q1: BQ76PL455A-Q1 Daisy chain Layout
Part Number:BQ76PL455A-Q1
Tool/software: WEBENCH® Design Tools
Hi
I have some question about BQ76PL455A-Q1 daisy chain Layout .
In Spec. daisy chain PCB layout need isolation keep out in top/ middle/ bottom layer.
http://www.ti.com/lit/an/slua791a/slua791a.pdf
But in EVM bottom layer didn't do that.
http://www.ti.com/lit/df/tidrhk4/tidrhk4.pdf
Please tell me which one is correct.
Best Regards,
Jason Kuan
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BQ78Z100: bq78z100 SHA 1 Authentication key
Part Number:BQ78Z100
hi Team:
I I already have following file，could you pls help to support 1100_0_04-bq78z100.bqz file?
1100_0_02-bq78z100.bqz
1100_0_03-bq78z100.bqz
1100_0_05-bq78z100.bqz
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BQ78PL116: CFET Failure
Part Number:BQ78PL116
We have 4 cell LiFe battery pack with each cell having 3.6V/2.9Ah capacity. The EUV threshold level is set to 2.55V, the EUV time is set to 2 Secs and EUV recovery is set to 2.9V.
When the battery cell voltages are below 2.98V and the battery is in ship mode, then if the battery cells are charged by-passing the charge FET then the CFETF bit is set.
However I have noticed that the same test condition provided the battery cell voltages are 3V and above wouldn't set the CFETF bit.
How is the CFETF bit dependent on Cell voltages of the battery?
Best Regards,
Chetan.S.L.
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TPS54335A: lc filter for analog circuit
Part Number:TPS54335A
Hello
In my customer's design, L2=1000uH/0.56A and 1000uF are added after TPS54335A .
(Please attached jpg file)
It may be effective for noise reduction for analog circuit,
(may be used as usually in old design) but I think to use large L and C
after DC/DC converter is NOT recommended for relaiability due to large L ( magnetic energy may reversed to IC ) .
I will recommend customer to use LDO if available.
However, would you please have your comment for this?
Thank you and wit my best regards
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LM73606-Q1: IQ spec and light load mode efficiency?
Part Number:LM73606-Q1
1. Can you offer the efficiency curve when output current below 1mA ?（12V in/5V out）
2. On the datasheet we find the Iq current is typical 15uA, @25C, can you offer the typical case of corner value?
3. How to calculate efficiency when output current is 50~100uA, should we add the Iq current?
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LM3914: LM3914 have plan EOL ?
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LM3409-Q1: High accuracy driver for Laser
Part Number:LM3409-Q1
Hi team,
Customer want to do a design which has below requirements:
Input voltage:12V
Output volatge: 3.6~4.4V
ILED=2.3A
ILED-max<2.5A.
Can LM3409 meet all the requirements considering the difference among devices?
If yes, could you please help give some suggestion for the SCH design?
If not, any other part which could meet that?
Thanks.
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