BQ4050: GPC ERROR

October 22, 2019, 3:03 am

≫ Next: TPSM82822: alternative for the TPSM82821 that can't be found on the website

≪ Previous: BQ35100: Changing the CHEM_ID

$

0

0

Part Number: BQ4050

Hello, after uploading a zip file to the GPC tool,i recieved an email with the next report:

"computation wasn't successful, but the specific reason was not identified ' please check that all files are prepared  according to the documentation . the support personnel have been informed

the files were inserted here:

what could be the reason for this error ?


thank you .

(Please visit the site to view this file)(Please visit the site to view this file)(Please visit the site to view this file)(Please visit the site to view this file)(Please visit the site to view this file)(Please visit the site to view this file)

(Please visit the site to view this file)

---

TPSM82822: alternative for the TPSM82821 that can't be found on the website

October 22, 2019, 3:20 am

≫ Next: TPS7A24: When TPS7A24 release?

≪ Previous: BQ4050: GPC ERROR

$

0

0

Part Number: TPSM82822

Hello team,

one of my customers is looking to supply a Lattice FPGA that works at 1.1V and 2.5V with roughly 1 A of current. They have available a supply of 3.3V and 5V from which to start and they also noticed that TPSM82821SILR would be a good candidate.

Unfortunately the device is visible on Webench but on the website.

Could you please confirm if it's a valid choice? If yes, can you please let me know the pricing for 1k units?

Thank you and best regards,

Adrian

TPS7A24: When TPS7A24 release?

October 22, 2019, 3:32 am

≫ Next: BQ25570: Boost charger operation range

≪ Previous: TPSM82822: alternative for the TPSM82821 that can't be found on the website

$

0

0

Part Number: TPS7A24

Hi TIs,

As the topic, when will TPS7A24 release? 

Thanks

BR

Sara Jia

BQ25570: Boost charger operation range

October 22, 2019, 2:59 am

≫ Next: LM5164-Q1: Negative rail configuration

≪ Previous: TPS7A24: When TPS7A24 release?

$

0

0

Part Number: BQ25570

Hi,

I would like to ask some questions about the boost charger of the bq22570.

I am wondering what will happen when Vin_DC > 5.1V? Can Vin_DC exceed 5.1V?

And the same question about Pin, if Pin > 510mW what will happen and can it exceed 510mW?

Thank you in advance.

Best regards,

Thien

LM5164-Q1: Negative rail configuration

October 22, 2019, 3:06 am

≫ Next: BQ76930: OCD level in 10s and SLUCC539 availability

≪ Previous: BQ25570: Boost charger operation range

$

0

0

Part Number: LM5164-Q1

Hi,

Im intrested to know if this buck converter can be configured to provide a negative output (-15V) when the supply is  +48Vdc. I have been able to achive this with other buck designs advice is welcomed with this device.

BQ76930: OCD level in 10s and SLUCC539 availability

October 22, 2019, 3:11 am

≫ Next: LP8556: use at low frequency operation

≪ Previous: LM5164-Q1: Negative rail configuration

$

0

0

Part Number: BQ76930

I have a 10 cell pack capable of delivering 100A at 37V, and a system with a max load of 1kW. I'm designing a BMS using the BQ76930 and based on current consumption needs, I chose a 2mOhm RSENS. I need to set my OCD to trip at 70A, but that means OCD is 140mV, and this chip's highest rating is 100mV. Is there a better BSM chip out there to handle this value? it seems that the OCD levels for this series are all the same... Or is there something I missed? 

Further, when I clicked the link to get the SLUCC539 programming software, the page is missing. 

LP8556: use at low frequency operation

October 22, 2019, 4:05 am

≫ Next: LP5024: Are the address inputs latched at power on or are they able to be changed dynamically?

≪ Previous: BQ76930: OCD level in 10s and SLUCC539 availability

$

0

0

Part Number: LP8556

Hi, 

My customer is having below questions: 

PWM pin is used for dimming mode control, so frequency is from 100Hz to 22K.

In our application, we use direct PWM as LED one/off control, so IC might work as low as 60Hz.

 

Can you help to check if using directly PWM mode, can we use 60~120Hz 5% duty for this IC?

Please let us know if there are further information needed.

Thanks a lot. 

LP5024: Are the address inputs latched at power on or are they able to be changed dynamically?

October 22, 2019, 4:42 am

≫ Next: Compiler/BQ34110: Bq34110

≪ Previous: LP8556: use at low frequency operation

$

0

0

Part Number: LP5024

I want to use the LP5024 with dynamic addressing. I want to change the address without having to power cycle the device. When are the address inputs read?

---

Compiler/BQ34110: Bq34110

October 22, 2019, 4:50 am

≫ Next: CCS: Sampling vac for designing a UCD3138 controlled PFC

≪ Previous: LP5024: Are the address inputs latched at power on or are they able to be changed dynamically?

$

0

0

Part Number: BQ34110

Tool/software: TI C/C++ Compiler

Dear sir / mam

 i have done with system to configuration for Alert generation .

following these steps.

1. Manufacturing Status Init.

  configuration data  in data flash is 0x001F at register 0x40D7

2. Alert1_0 Config -> register 0x413E -> value set 0x01

3.  Alert2_0 Config -> register 0x4145 -> value set 0x01

and i read the BatteryStatus() 0x0A/0x0B. and check signal in Alert pin.

Apply voltage by Battery 1 - 11.04 and other battery has 6.5 v . i have operate >5V operation.

but Alert interrupt has not generated.

so please help me.

CCS: Sampling vac for designing a UCD3138 controlled PFC

October 22, 2019, 3:45 am

≫ Next: UCC256303: UCC256303 startup issue

≪ Previous: Compiler/BQ34110: Bq34110

$

0

0

Tool/software: Code Composer Studio

Refer to slua708, slua712 and slua713

What is the following code?

iv.vin_sum = iv.vin_raw + iv.vin_sum - (iv.vin_sum >> 2);
iv.vin_filtered = iv.vin_sum >> 2;

And what is different between above and the following code?

iv.vin_filtered = iv.vin_raw;

UCC256303: UCC256303 startup issue

October 22, 2019, 5:09 am

≫ Next: BQ25890: the SYS pin output cannot be recovered after a short-circuit

≪ Previous: CCS: Sampling vac for designing a UCD3138 controlled PFC

$

0

0

Part Number: UCC256303

Dear colleague,

The customer has encountered the below issue:

1. Now they have a UCC256303 for a project. Now there is a problem with the startup.
When starting, the resonant current is too large to trigger OCP protection, resulting in a continuous restart.

2. The following waveform is the instantaneous waveform of the startup. After the completion of charge boot, the chip starts to start with a frequency of about 770K, and the frequency of five pulses is about 120K. I do not know if this startup process is normal.

3. Attachment is schematic.

(Please visit the site to view this file)

BQ25890: the SYS pin output cannot be recovered after a short-circuit

October 22, 2019, 5:19 am

≫ Next: BQ25883: bq25883 schematic review

≪ Previous: UCC256303: UCC256303 startup issue

$

0

0

Part Number: BQ25890

TI engineers,

The BQ25890 encounters an abnormal phenomenon: under the battery power supply condition, if the SYS pin output of the BQ25890 is short-circuited to the ground, the SYS output of the BQ25890 will be protected, and the output is 0v, but the short-circuit abnormality is removed, and the SYS pin output cannot be recovered. Only insert the charge or /QON pin has a low-level pulse, you can recover, trouble to confirm whether there is any other way sys pin can automatically restore the output?

Thank you
Robin

BQ25883: bq25883 schematic review

October 22, 2019, 5:22 am

≫ Next: TPS61175: Will Enable isolate the source side and load side

≪ Previous: BQ25890: the SYS pin output cannot be recovered after a short-circuit

$

0

0

Part Number: BQ25883

Dear team,

Would you kindly help review the schematic?

Thanks.

Best regards,

Sammi

TPS61175: Will Enable isolate the source side and load side

October 22, 2019, 5:24 am

≫ Next: LM3560: Maximum number of LED's which can be driven by FLASH_LED_OUTPUT_1

≪ Previous: BQ25883: bq25883 schematic review

$

0

0

Part Number: TPS61175

Hi, I'm trying to design a boost converter. I want to know what is the purpose of Enable function in IC TPS61175 .   i.e. My Vin = 5V, Vout = 9V ,when enable pin is pull down what will be my Vout at that time  whether it is 0V or  Vin . Please refer the datasheet block diagram .

LM3560: Maximum number of LED's which can be driven by FLASH_LED_OUTPUT_1

October 22, 2019, 5:33 am

≫ Next: TPS54332: ENable hysteresis vs output voltage

≪ Previous: TPS61175: Will Enable isolate the source side and load side

$

0

0

Part Number: LM3560

How many LED's LED1/LED2 pin can drive. I can't find data on maximum voltage output which can be raised by internal boost converter. Hence asking for this data.

I'm using 3.3v drop white LED's in series and curious on how many of them I can use. 

Thanks

ATharva 

---

TPS54332: ENable hysteresis vs output voltage

October 22, 2019, 5:44 am

≫ Next: TPS548D22: Schematic Review

≪ Previous: LM3560: Maximum number of LED's which can be driven by FLASH_LED_OUTPUT_1

$

0

0

Part Number: TPS54332

I am seeing a curious phenomenon in a circuit that uses a TPS54332 as the main regulator for a 6V rail, but which is backed up with a 5.5V LDO regulator (since the TPS54332 did not want to operate at 100% duty / pass-through mode). When the output rail is already at 5.5V the ENable threshold seems to move upwards - eg with 1.701V on the ENable pin, the TSP54332 still does not turn on, despite the typical ENable threshold being 1.25V and worst case 1.35V as per datasheet.

Is this expected behaviour from the part or should it still try to start up at 1.25V ENable voltage ?

If it is expected, then is there some documentation / design information which can be used to predict the actual ENable threshold ?

Best regards,

Patrick Herborn.

TPS548D22: Schematic Review

October 22, 2019, 5:47 am

≫ Next: BQ25100H: What happens if Riset value is between 450Ω and 540Ω?

≪ Previous: TPS54332: ENable hysteresis vs output voltage

$

0

0

Part Number: TPS548D22

Dear Team,

Please double-check the design.

If you have any concern please feel free to let me know.

BR

Kevin

BQ25100H: What happens if Riset value is between 450Ω and 540Ω?

October 22, 2019, 6:13 am

≫ Next: BQ24195L: USB Host bridge

≪ Previous: TPS548D22: Schematic Review

$

0

0

Part Number: BQ25100H

Hello,

According to BQ25100H datasheet, recommended Riset value is from 540Ω to 13.5kΩ. and maximum fault resistor value is 450Ω.

What happens if customer connects 460Ω ~ 530Ω resistor to  Riset?

Iout is over 250mA? or higher Iout ? 

Please let me get your answer.

Regards,

Nicky

  

BQ24195L: USB Host bridge

October 22, 2019, 6:20 am

≫ Next: TPS2549: Whether we can check the charging status through USB port to TPS2549

≪ Previous: BQ25100H: What happens if Riset value is between 450Ω and 540Ω?

$

0

0

Part Number: BQ24195L

As the HPA172 is no longer available, what USB bridge should I use with this EVM?

Or is there a newer part I should use.

TPS2549: Whether we can check the charging status through USB port to TPS2549

October 22, 2019, 6:22 am

≫ Next: BQ76940: OCD and SCD setting

≪ Previous: BQ24195L: USB Host bridge

$

0

0

Part Number: TPS2549

 Our customer want to know if we can check the charging protocol (DCP,CDP or SDP) through the USB by the Host Device and how?