Part Number:TPS652510
Dears:
Could you kindly help to check the below schematic?
Since the outputs are not normal ,and are little higher.
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TPS652510: the outputs are not normal ,and are little higher.
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TPS1H200A-Q1: Open-load and short diagnostics
Part Number:TPS1H200A-Q1
Is it possible to distinguish between open-load and a short?
If yes can you explain me how?
Regards, Bernd
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TPS40200: Designing a negative boost converter with buck
Part Number:TPS40200
Dear all,
I'm trying to design a boost converter for -15V to -18V.
I'm using this guide http://www.ti.com/lit/an/slyt516/slyt516.pdf.
In the document above there is working example with TPS54020RUW, which is a synchronous buck converter ,
but when I try to make a similar design with another converter it is not working (and I've tried
with synchronous and non-synchronous ICs like TPS54232A , TPS54335A).
In all the cases the output voltage is approximately equal to the input voltage.
On the other hand the design works with TPS40200 which is a dc/dc controller.
So what is so special to TPS54020RUW and the other ICs.
BR,
Eltimir
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TPS2379: Oscilloscope measure
Part Number:TPS2379
Hi All,
I have tried to measure the voltage on the C bulk capacitor with an oscilloscope to see the voltage raising. When the oscilloscope prove is connected to the C bulk it doesn't do the handshake and I don't know why it is happen. The prove can disturb the handshake?, if that is the case how I could get the measurements?. The schematic is identical to TPS2379EVM-106 development board.
Thanks,
Winsu
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BQ35100: Getting correct SOH from chip in EOS mode
Part Number:BQ35100
Our target is to use the BQ35100 for monitoring EOS of an EVE26500 battery.
There is a chem-id profile already available for this and we have programmed that one correctly.
We have followed the technical ref manual, chapter 5.3 to set the chip in correct mode.
Still following the manual for collecting data during our drain of current, we are still not able to get a SOH reading that differs from zero.
Our assumption is that a fresh battery should show 100%.
So, bottom-line is that we are not able to see any working progress of the chip.
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LM5150-Q1: Input and output resistance of LM5150-Q1
Part Number:LM5150-Q1
Hi team,
Could you please kindly help on following questions?
#1 How much are the input and output resistance when the status of LM5150 is under shunt down mode ? Though i can see some resistors from the block diagram(yellow masked), but i can't get these resistors' value. (customer want to evaluate the discharge time when there haven't Rload and the Vsupply changed from 6V(have stable Vout this time) to below 1V(shunt down mode))
#2 How long will it cost from EN enable to stable Vout (it is soft start time?)? I can't find relate parameter in Datasheet.
Thank you very much.
Best regards
Jessica
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BQ40Z50-R2: Charging Loss Compensation
Part Number:BQ40Z50-R2
Hi TI experts,
Do you have more about "Charging Loss Compensation" document? I want to know the function how to work between BQ40Z50-R2 and smart charger(host). Is it for charging terminate fail or reduce charging time? or...etc? The default "CCC Current Threshold" value is confused me.
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TPS53315: Over-current detection
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LM74700-Q1: Supply Chain
Part Number:LM74700-Q1
Hello,
I would like to design this part into a new product.
I see December 2018 and mid-to-late January 2019 both given as release dates in a previous related thread. There seem to be some available from the TI shop, but none from UK distributors, who are only quoting a default leadtime of 12 weeks, which would be too late for our schedule.
Has the part been released yet or is it still pre=production ? How quickly could I get, say, 100 for our prototype units, please ?
JDMitchell
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TPS62130: Tc check
Part Number:TPS62130
Hi Ti,
Could you share the Tc(temperature case )parameter of this part? since we want to check the case temperature with the ambient temperature is 60°
Thanks
Peiyuanqing
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Help to select/design a power switch
Hi to all!
I need some help to design a circuit that use a power switch.
In particular I want to implement this schema:
So I need an "high side power switch" that i can control using a microcontroller pin at 3.3V, or with an optocoupler if in the case the 3.3V of the microcontroller pin aren't suffcient.
This power switch should be switching a voltage of about 8.4V and a current of about 32A.
The important thing is that this circuit is not for fast switching, i need a power switch only to turn on and turn off the power for the load.
Can you help me to select some ready solutions (like to the load switch) or some component like the mosfet and the gate drive circuit?
I have looked at your load switch, but they are small for my purpose.
Even some reference design or some other solutions are welcome.
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BQ77905: Minimum discharge current
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LM5060-Q1: Reverse Output Protection
Part Number:LM5060-Q1
Hello,
I need a reverse battery protection for a CC/CV (buck) charger (14.5V / 1Amp). I'm thinking of LM5060 (generic application diagram; Vin - charger output, Vout - battery port). I do not need a back-to-back switch as the input polarity is guaranteed (charger output). In fact, a back-to-back switch would be useful for reverse current flow (from battery to the charger) protection that I need, but LM5060 does not support that functionality, does it ?
In the datasheet, page 4, note (5) refers to -25V maximum. Is adding Ro resistor in series with OUT pin sufficient to protect the device ?
I assume that connecting reverse battery to an unpowered unit should be safe. How about connecting reverse battery to a unit which is up and running (with no or light load), providing 14.5V at the battery port ?
Thank you for your attention.
Regards,
Robert
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LM5050-1: circuit question for reverse input voltage protection
Part Number:LM5050-1
Hi expert,
My customer has a question on below picture, what is the purpose for D1 and D3? Thanks a lot!!
Best regards,
Ann Lien
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TPS62097-Q1: 2MHz Forced PWM Mode
Part Number:TPS62097-Q1
Hey Team,
For section 7.4.2 in the datasheet I'm a little confused. Is it possible to operate TPS62097-Q1 at 2MHz with forced PWM? If so, what is the method?
Best Regards,
Casey
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BQ77905: Upper BQ77905 CTRC/CTRD contected to VSS in 13S
Part Number:BQ77905
Dear Colleague,
In the case of multi-chip cascade, chip 2 transmits protection action by receiving CHGU/DSG signal of chip 1. Under normal circumstances, the high-level output of CHGU and DSG pins of chip 1 can be detected by the CTRX of chip 2, so chip 2 can be judged that chip 1 has no protective action. However, the CTRD and CTRC of the chip 1 are connected to the ground, which is the same as the signal that the chip 2 receives when the chip 1 is protected (CHGU/DSG is low). In both cases, the inputs are the same, but the output is different.
So how to explain this logic?
Thanks a lot!
B.R
Rock Su
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BQ27441-G1: Minimum measurable current
Part Number:BQ27441-G1
Hi,
Reading the previous questions in the forum I understand that the coulomb counter ADC has an effective resolution of 16 bit and a range of 50mV so each LSB equals 0.76 uV --> with a 10mOhm resistor this equals 76uA (theoretical).
So, Can I read current less than 1 mA (the resolution of AverageCurrent) or can I change the internal ratio of the ADC?
Because I need to read current with resolution near the 50 uA.
Best Regards,
Matteo
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BQ34Z100-G1: Max current for Open-drain I/O pins (SDA, SCL, HDQ, VEN)
Part Number:BQ34Z100-G1
Hi,
Our datasheet doesn't mention the max current for SDA or SCL. You suggest a pull-up of 10kOhm, so with high level logical = 5V, max current = 0.5mA when the open collector is closed.
However, we want to use an optocoupler to protect the lines of communication. The current required for the photodiodes can be several mA. Hence my question.
Best regards,
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BQ77915: Battery balance
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UCD90320: I2C programming specification request
Part Number:UCD90320
Hello,
Could you kindly provide me with the programming specification (I2C programming protocol) for UCD90320ZWST? Our customer asked us to implement mass programming tool.
Thank you,
Frantisek
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