Part Number:BQ28Z610
Dear TI Experts,
My customer has a 2S Pack project with BQ28z610 and has been in MP stage for several months. Recently, when room temperature descend to some 20 degree from 30 degree , they noticed that FCC is smaller than before and Qmax cycle count=0 other than Qmax cycle count=1 when 30 degree. They don't know if it is normal. Could you kindly give some advice? Thanks a lot.
Part Number:UCC27524A
I was facing the same issue with UCC27524A. after turn on supply, I tried to turn on PFC. But there was no boot. So while checking for the error it is found that gate driver gate and ground got shorted.
And the same error is repeated 2-3 times. So I replaced UCC27524A with UCC27531D. Then it was working fine.
Part Number:TPS7A66-Q1
Hi,
In the TPS7A66-Q1 datasheet, HVSSOP has to have thermal pad.
But in pin description, it's "-" at Thermal PAD in HVSSOP. Is it typo?
Part Number:LM5069
Application: motor driver with high power
Customer wanna to know the principle and function of the D2 and R6 on LM5069EVM. Why both D2 and D6 are not required when the resistive path between Vin and GND pin of the LM5069 is less than 1M Ohm? What situation does the circuit of the D2 +R6 path be activated?
Please check if below circuit is ok or not? Very thanks.
Part Number:CSD18510KCS
Hi TI Team,
Please help me to understand the linear and saturation region of this Mosfet and the supply conditions. I am trying to form a series regulator using this part. My Vds is 6V, my required output is 4V, 3A, I can drive the Vgs = 0V to 12V using an error amplifier. So that I need this linear region.
What is the charging and discharging current of the Gate? Is there any circuit combination to quick charging and discharging of the gate? Please share the Tina Model for this Mosfet or suggest equivalent part
which Gate driver is suitable for this Mosfet? is it advisable to use Gate driver for this application? Is the gate driver will drive the Mosfet in linear region?
Thanks,
Part Number:TPS54560
Hi TI team,
We have designed power supply circuit using TPS54560DDAR IC, today we were doing board check.
As per the circuit, VIN is the Input 48V from the Battery and when the Keyswitch is a ON/OFF, If the Switch is closed, VCC_48V is geneated and the same voltage is connected to TPS54560 IC.
I started the board check up by giveing VCC_IN(48V) and afer 30 sec I made the keyswitch ON, I got the sound from relay, then 5V was coming,
After that, I made the Key switch OFF, Till here no issue, Then when I again made the Keyswitch ON, I THe TPS54560 IC blown off at its input side.
I couldn't get any reason for this cause, Kindly support on to this resolve.
Thanks
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Part Number:TPS61090
Hi,
I am testing the efficiency of TPS61090 converter set to 5.2V output voltage with
NR5040T6R8M (6.8uH inductor) and a 100uF low ESR ceramic capacitor on the output.
I have a bench power supply connected to the input and an electronic load to the output of the converter.
The electronic load is set to 500mA constant current and I am only varying the input voltage to simulate the battery discharge.
Here are the results of the Input voltage vs Input current:
4.2V - 665mA (best case scenario - Efficiency = 75%)
4.1V - 685mA
4.0V - 705mA
3.9V - 728mA
3.8V - 751mA
3.7V - 776mA
3.6V - 800mA
3.5V - 833mA
3.4V - 876mA
3.3V - 910mA
3.2V - 947mA
3.1V - 990mA
3.0V - 1039mA (Efficiency < 50%)
The TPS61090 converter suppose to operate down to 1.8V input voltage with 500mA output
current but with the efficiency bellow 50% at 3V input, there is not much point of testing any further.
According to the data, the efficiency at 3V input / 500mA output should be above 90% for this part.
Interestingly, the EVM for this part states:
To reduce the total PCB design area, the inductor used on the EVM is
smaller than the inductor used in characterization curves in the data sheet.
Generally, smaller size inductors decrease the efficiency in the design.
Can you please explain how and with what components were you able to achieve the claimed efficiency.
Best regards,
IT
Part Number:TPS61087
HI all
I have large ELCO capacitor at output that i have to charge with Constant current ( CC). Can i achieve this with TPS6198 or is there a better solution?
1) I want to limit current with SS pin, can i connect a DAC voltage to SS pin do this?
2) Also i van to change the output voltage, also can i connect the DAC voltage to feedback pin?
3) How is the SS voltage relation to output current and voltage?
Here is a block diagram
Thank you,
BR.
Hi TI,
Is there power solution of IMVP8 for Kabylake-U? This is a low power application.
Thanj you.
Best Regards,
C.T.
Part Number:LM5121
Hello E2E,
How much the outline dimension for EVM board?
Our customer is considering board layout.
They are trying to make the same board as the EVM.
Regards,
ACGUY
Would like to check the test method with you for below list parts; We all know the OVP function from datasheet, but need to check how to perform it, thanks.
SN1602003RVFR
SN1062018
Part Number:TLV700
Dear Sir,
Please help to explain below drop voltage test condition about "Vin = 0.98 * Vout". Thanks!
Best Regards,
Sam Shyu
Part Number:BQ40Z50
Dear TI Experts,
My customer is evaluating a new 2S pack with BQ40z50(end-customer need SMBUS). After they finished several prototype, they found some pack(some 20%) SOC would decrease to 0% earlier, while the pack can still discharge normally.They've calculated CHEM ID with GPCCHEM and indicated that cell's consistency is good. Attached is GG and log info.
Could you kindly help to give some advice about this issue? Thanks a lot.
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Part Number:LM5069
Hi Ti,
We know the PWR pin set the Plimit, does it means the FET peak PD should be less than the setting value?
Part Number:BQ40Z50-R1
Hi,
I am reading p.113 of sluubc1d.pdf.
I would like to ask about MaxError ().
When operating with general charge / discharge, what is the normal value of MaxError ()? 1%?
the gaming mouse scenario is 15-minutes of fast charging delivers 12+ hours of game play.MUST to recognize the USB2.0 or USB3.0, I need you help to recommend the charger IC for this case.
1. system power consumption is 7mA, 2. Li. Bat. is 1000mAH
Part Number:TPS92691-Q1
Hi,
What does this 15:1 analog dimming ratio mean and how this 15:1 analog dimming ratio come out? from below picture the linear range is from 0.14V-2.42V. Thanks.
Part Number:LMR14030
With the help of above part,i need to design 5V/200mA from the input of 16V.I selected inductor value based on the formula given in the TI datasheet and it is 85uh around.inductor ripple is considered as 0.4*Iout.
Output capacitor as per the formula it is around 4.7uf.But with these values i am not getting the desired output in the simulation(simetrix).Could you please suggest the correct value of inductor and capacitor for my application.If it is possible pleae share me the simualtion file.
Input specification are below
1. Nominal operating range 9-16V
2. Generate a 5V +/- 3% output voltage ; output ripple~50mV
3. Output current ~200mA
4. Switching frequency: Around 500 kHz
Part Number:BQ2000
Hallo TI,
I wanted to use BQ2000 Battery charger for charging 3 Ni-MH cells in series. In datasheet says, input supply range is between 4 ot 6V and in EVM datasheet says it requires Min 10 V (+DC).
What is specific and right range? Will it work with 5 V input supply?
Please give some feedback regarding that.