TPS7B8250EVM: TPS7B8250 for Automotive

October 25, 2018, 1:22 am

≫ Next: BQ24073: BQ24073 charge wave abnormal

≪ Previous: BQ25710: Bq25710

Part Number:TPS7B8250EVM

Tool/software:TINA-TI or Spice Models

Hi, could you let me know has TPS7B8250-Q1 and TPS7B6850 been used for Automotive?

please also let us know which application?

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BQ24073: BQ24073 charge wave abnormal

October 25, 2018, 1:23 am

≫ Next: TLV713P: very light load operation

≪ Previous: TINA/Spice/TPS7B8250EVM: TPS7B8250 for Automotive

Part Number:BQ24073

sir,

customer test BQ24073 charge voltage /current wave as below , what's reason will happen charge current will drop down 2s, there are two times happen it during total charge stage. R713 is resister between TMR and system, now is 68k, if they change R713 to 100k, drop down times will change to 1 time, pls refer the second picture, customer want to know why will happen drop down current or voltage like below picture.

R713 Change to 100k.

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TLV713P: very light load operation

October 25, 2018, 1:38 am

≫ Next: LM5175: If LM5175's Mode pin could be floating ?

≪ Previous: BQ24073: BQ24073 charge wave abnormal

Part Number:TLV713P

Hello,

I think TLV713P is cap free LDO. Is TLV713P stable even though very light load condition? I assume load is TMP102 which supply current is around 10uA.

Best regards,

Toshihiro Watanabe

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LM5175: If LM5175's Mode pin could be floating ?

October 25, 2018, 1:45 am

≫ Next: TPS51206: Power off sequence of TPS51206

≪ Previous: TLV713P: very light load operation

Part Number:LM5175

Hello

My application have risk of causing Mode PIN floating ,so what LM5175 will hapen ? my application will be ok?

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TPS51206: Power off sequence of TPS51206

October 25, 2018, 1:46 am

≫ Next: TPS7A49: TPS7A49 current drift under high temp test

≪ Previous: LM5175: If LM5175's Mode pin could be floating ?

Part Number:TPS51206

I have a question about power off sequence if TPS51206.

The power off sequence is recommended VDD, S3 and S5 are first, next VLDOIN and VDDQSNS in "7.3.6 Power On and Off Sequence".

But VDD is power off at last in figure 23.

Which is correct?

Best regards,

Yokota

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TPS7A49: TPS7A49 current drift under high temp test

October 25, 2018, 2:02 am

≫ Next: TPS51367: Not found the EVM

≪ Previous: TPS51206: Power off sequence of TPS51206

Part Number:TPS7A49

Hi,

i'm in midst of running some high temp test on TPS7A4901DGN with regulator step down from 12V to 9.3V.

Recently we found thermal issue on this device, my initial suspect that this issue was caused by output current consumption. The measured worst case current consumption was 152mA which exceeded the max current of 150mA. According to datasheet section 8.4 on operating modes, my device should still be functioning since it's still below the Ilim of 220mA since Iout<Ilim condition is still in place. if that's the case what will be the potential risks i may face & any recommended guidelines to follow? Thanks.

Regards,

Leo

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TPS51367: Not found the EVM

October 25, 2018, 2:03 am

≫ Next: TPS23861: PSE connect to PSE

≪ Previous: TPS7A49: TPS7A49 current drift under high temp test

Part Number:TPS51367

Hello,

I'm not able to find the TPS51367 EVM on the web.
Is there any way to get something of evaluation kit when we'd like to evaluate it?

Regards,
Shinya Sawamoto

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TPS23861: PSE connect to PSE

October 25, 2018, 2:05 am

≫ Next: BQ76930: Schematic review for 8 cells

≪ Previous: TPS51367: Not found the EVM

Part Number:TPS23861

Hello

if customer use TPS23861 that PSE connect to another PSE via cable. Has any damage risk for it? Has any protection integrated on TPS23861? Thank you.

Patrick

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BQ76930: Schematic review for 8 cells

October 25, 2018, 2:07 am

≫ Next: BQ25895: software/ how to test/ 2 input

≪ Previous: TPS23861: PSE connect to PSE

Part Number:BQ76930

Dear Sir/Ms.

My customer want to design a BQ76930 but they have some questions.

1. Can the BQ76930' current detection part be measured at high side? Did BQ76930 support high side sense?
2. Does the BQ76930 achieve Pre-Discharging Solution without using GATE DRIVE IC (BQ76200)?
3. If you really need GATE DRIVE IC to achieve Pre-Discharging function, then can the BQ76200 be placed on the low voltage side? Is there any other solution? Because my customer must have MOSFET and current detection The parts are placed on the same side so that I can reduce one of the lock terminals.

Best Regards,

Kami Huang

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BQ25895: software/ how to test/ 2 input

October 25, 2018, 2:12 am

≫ Next: Compiler/USB-TO-GPIO: Adapter not attached

≪ Previous: BQ76930: Schematic review for 8 cells

Part Number:BQ25895

Hi team,

customer would like to use BQ25895. they have 2 input, one is adapter another is solar board.

need your help for below,

1, will we provide Algorithm? where can dowload?

2. how to do the testing to verify the solar charge?

3. they have 2 input, one is adapter another is solar board. when only solar input and the current lower than the system current, how will it work? will it keep switching between battery and solar input?

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Compiler/USB-TO-GPIO: Adapter not attached

October 25, 2018, 2:26 am

≫ Next: TPS92515: Repeatable Error After Power Cycle

≪ Previous: BQ25895: software/ how to test/ 2 input

Part Number:USB-TO-GPIO

Tool/software: TI C/C++ Compiler

I have connected the device to the system. The green LED glows. But I get adapter not connected error.

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TPS92515: Repeatable Error After Power Cycle

October 25, 2018, 2:28 am

≫ Next: TPS23880: The work of TPS23880

≪ Previous: Compiler/USB-TO-GPIO: Adapter not attached

Part Number:TPS92515

Hi Irwin :

I also encounter "self calibration of the TPS92515" issue. Could you give me more detailed documentation?

Best regards

Janson

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TPS23880: The work of TPS23880

October 25, 2018, 2:45 am

≫ Next: battery hot swap solution

≪ Previous: TPS92515: Repeatable Error After Power Cycle

Part Number:TPS23880

Dear sir:

Can TPS23880 Work normal with OSS suspended（(56PIN)）

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battery hot swap solution

October 25, 2018, 3:04 am

≫ Next: TPS7A05: Abnormal Ignd issue

≪ Previous: TPS23880: The work of TPS23880

Hi TI，

Our customer need one battery hot swap，sub battery will be used when the main battery is removed ，could you recommend one solution？

thanks

Peiyuanqing

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TPS7A05: Abnormal Ignd issue

October 25, 2018, 3:32 am

≫ Next: BQ40Z50-r1 0x54 OperationStatus register and ManufacturerAccess() 0x0054 OperationStatus register difference,tks!

≪ Previous: battery hot swap solution

Part Number:TPS7A05

Hello,

My customer find the Ignd of TPS7A0533 is quite big.

Test condition:

The circuit is powered up by 3.6V battery, VCC is connected to load, FB1 is left disconnected, the current meter is in series in input end.

Load=600K, measured current is 206uA, then connect battery to VCC directly(R52 disconnected), I=6uA, Ignd=200uA.

Load=2K, same test approach, Ignd=260uA.

It seems that the Ignd is much more than the nominal spec.

The schematic is as below for reference.

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BQ40Z50-r1 0x54 OperationStatus register and ManufacturerAccess() 0x0054 OperationStatus register difference,tks!

October 25, 2018, 3:32 am

≫ Next: why can not Enter the shutdown mode?(BQ20Z75)

≪ Previous: TPS7A05: Abnormal Ignd issue

Hi,

two questions ask:

1. About OperationStatus register ,from the BQ40Z50-r1 Technical Reference,i knwon that,it has two way to access,one is used 0x54 register ,another way is ManufacturerBlockAccess() or ManufacturerData(),

These two way can read the same results?

2.How to read ManufacturerAccess() 0x0054 OperationStatus register? is the same as below? First write command 0x00,data sent 0x0054,then read command 0x23?

Thanks!