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BQ4050: Capacity scaling

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Hi team

On the product page of BQ4050 it is said that max battery capacity is 29 Ah. But I can't find any notes about it in the datasheet.

I need to gauge a battery pack with capacity about 40 Ah, is BQ4050 can do that?

If 29 Ah is maximal capacitance, is there any scaling method?

Thank you.


BQ24610: Any problem working constantly at the maximum voltage specified in the recommended operating conditions?

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Part Number:BQ24610

Hello,

I am designing a circuit for charging a 6-cell  lithium polymer battery. The maximum voltage of this battery is about 25.2V, so I had thought to use a 28V AC/DC adapter. Because 28V is the maximum voltage specified in the recommended operating conditions, would there be risk of rupture? Would your life time be shortened as you are working at the maximum voltage allowed? Thank you.

TLV320AIC3104EVM-K: how to set the streaming audio via the USB interface from the PC ?

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Part Number:TLV320AIC3104EVM-K

Dear  all

      The Slau232.pdf said: "The default configuration will provide power, control signals, and streaming audio via the USB interface from the PC."

       I want to know how to set the streaming audio via the USB interface from the PC ?

CDCLVC1104: Input slew rate

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Part Number:CDCLVC1104

Hello,

 

I have a question about input slew rate.

 

CDCLVC1104 datasheet defines “input slew rate” as 1(MN) and 4(MAX) V/ns.

Now a customer is looking at some crystal oscillators, but they find it is difficult to satisfy both MIN and MAX.

They can satisfy MAX value by reducing load capacitance value, but doing that brings MIN value can’t be satisfied

including tolerance by temperature and voltage drift.

My question is that do you have any recommended crystal oscillator to satisfy this requirement?

 

Regards,

Oba

 

RTOS/AM5728: undefined reference to a15_Cache_wbInv

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Part Number:AM5728

Tool/software: TI-RTOS

Dear Team,

While my customer is merging IPC and Ethernet example, they found below build error.

Could you please provide your idea how this error can be resolved?

I'm wondering which library has 'ti_sysbios_family_arm_a15_Cache_wbInv__E' functions and how this error was resolved.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

makefile:165: recipe for target 'wk1000_a15f2.out' failed 

D:\1_work\02_dsp\TI_CCS_V8\wk1000\wk1000_a15f2\Debug\configPkg\package\cfg\app_eth_ipc_pa15fg.oa15fg:(.rodata.ti_sysbios_knl_Task_hooks__A+0x0): undefined reference to `TaskRegisterId'
D:\1_work\02_dsp\TI_CCS_V8\wk1000\wk1000_a15f2\Debug\configPkg\package\cfg\app_eth_ipc_pa15fg.oa15fg:(.rodata.ti_sysbios_knl_Task_hooks__A+0xc): undefined reference to `mySwitch'
C:\ti\pdk_am57xx_1_0_11\packages\ti\osal\lib\tirtos\a15\release\ti.osal.aa15fg(CacheP_tirtos.oa15fg): In function `CacheP_wbInv':
C:\ti\pdk_am57xx_1_0_11\packages\ti\osal/src/tirtos/CacheP_tirtos.c:62: undefined reference to `ti_sysbios_family_arm_a15_Cache_wbInv__E'
C:\ti\pdk_am57xx_1_0_11\packages\ti\osal\lib\tirtos\a15\release\ti.osal.aa15fg(CacheP_tirtos.oa15fg): In function `CacheP_Inv':
C:\ti\pdk_am57xx_1_0_11\packages\ti\osal/src/tirtos/CacheP_tirtos.c:67: undefined reference to `ti_sysbios_family_arm_a15_Cache_inv__E'
collect2.exe: error: ld returned 1 exit status
gmake[1]: *** [wk1000_a15f2.out] Error 1
gmake: *** [all] Error 2
makefile:161: recipe for target 'all' failed

Thanks and Best Regards,

SI.

TPS563200: Inquiry about resistance value

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Part Number:TPS563200

To whom it may concern

I'm writing this e-mail to ask some questions about TPS563200.

Especially, the value of resistor is what I'm looking for.

I'm using this component to convert voltage from 5 V to 3.3 V.

According to Table 4 in the datasheet, the recommended component value of R2 is 33.2 kohm

Unfortunately, 33.2 kohm resistor is out of stock, so I'm looking for a resistor that can replace 33.2 kohm.

Is 33 kohm resistor available for the application?

If not, is it possible to make 33.2 kohm by connecting two resistors in series?

If you know anything, please reply.

Best Regards.

Wonwook Seo

BQ28Z610: while charging, only COV is set, TC and FC no action

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Part Number:BQ28Z610

Hi everyone,

we use the BQ28z610 for a configuration of 2S2P accu cells. But unfortunatly the pack doesn't work like it should.

First of all I updated the ChemID to the correct one (CHEMID 440).

I calibrated the BMS as mentioned in the TR (SLUUA65C) and ran the learning cycle as well.

Both cycle counter increased and update Status has entered "0E" like descriped in "slua777" .

After this the Golden Image was created by loading the customized .gg.csv into the Default.srec and Export it as new golden Image.

I updated a new BMS pcb with this generated Image.

When I started running a test cycle with complete discharge and complete Charge, the BMS did not react on the FC and TC tresholds. Charging was not stopped at reaching the defined voltage of 3600mV. The cell voltages increased until the COV treshold was reached at 3675mV and terminated charging.

Kind regards

René

CC2500: CC2500 and smart RF studio

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Part Number:CC2500

I use a development board with the cc2500 and I have one module with the cc2500 that I have connected to my own design. I am trying to send data from my own design via the cc2500 module to the the development board there I am using smartRF studio 7 to look at the communication. In my own design the SPI com ´munication with the cc2500 module is working. I can set and read the registers. After my understanding have I set the development board to smae frequensies and so on. When I am sending data do the smart RF studion it "reports recived not ok". Can you advice where to start looking for the problem?

Thanks

Micke


ADS1278EVM-PDK: ads1278-adcproplugin-2.0.0.exe driver download error?

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Part Number:ADS1278EVM-PDK

i want file <ads1278-adcproplugin-2.0.0.exe>

Error when downloading ftp site.

best regards.

Rice,Lee

LM3489: TypeC Vbus Power

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Part Number:LM3489

Hello

         Below is our TypeC reference design. LM3489 coverts 5V,9V,15V,20V for Type C Vbus. Could I know TPS51396 to replace LM3489 on this topology due to cost concern by customer? Thank you. 

           

www.ti.com/.../TPS65987-90EVM

BR

Patrick

UCC28070: question for the "Current Sense Offset and PWM Ramp for Improved Noise Immunity"

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Part Number:UCC28070

Hi,  I have some questions for the "Current Sense Offset and PWM Ramp" which is mentioned in UCC28070 datasheet 8.2.2.8. Could you please help to answer them?

1, As the datasheet said, the purpose of this offset and ramp circuit is to add some offset at light load, when inductor current is in DCM. But i did not understand that, during PFC mosfet turned off period, UCC28070 will have current synthesizer to simulate the down slope current signal. That is say even there is current signal ringing when current is DCM, the chip should not be false triggered, because it is using the simulated current signal

2, could you please explain the figure 28 the false current ?  In this figure, Rsa voltage has some offest, so it look like the waveform of offset and ramp circuit impelemented. But why when Mosfet is off, Rsa has no offset voltage?  And if the ramp and offset circuit has already be implemented, why it is called "Discontinours current cause false current signal".

Thanks

Tao Wu 

CCS/RM44L920: Which version of CCS is recommended to use?

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Part Number:RM44L920

Tool/software: Code Composer Studio

We want to develop a SIL3 product based on RM44L920-PGE.

Which version of CCS is recommended to use? where can we get the documents which should provide to TUV as T3 tool. 

CC2640R2F: CC2640R2F for Wireless mouse

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Part Number:CC2640R2F

Dear,


CC2640R2F have about wireless mouse reference design?


if yes,  could be share to me?


if any suggestion, Please advise me.


Thanks,


Best regards.


Lawrence.

LMX2571: the types of input OSC ?

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Part Number:LMX2571

Helo All,

I see similar question here but .... Guy, for LMX2571, LMX2492LMX2595:  what kinds of OSCin are allowed?  My customer considers TCXO with clipped sine. Is this OK?

Best regards,

Dmitry

IWR1642BOOST: mmwave demolab with IWR1642

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Part Number:IWR1642BOOST

Hi,

I want know,where exctly the range value is calculated prior to display on visualizer?

What is the resoluton of range, like( it measure only 100cm, 90cm in steps of 10 cm or in steps of cm is it possible after reaching near the object by 10 cm, 9cm,8cm?

I have already checked with High accuracy lab but since FOV is coming very less. I want to try this with mmwave demo, If I could get range value found by the radar and I can compare that, so that the FOV is around 60 degree. 

Kindly ans these

1. Where exactly the range value is calculated(like we have tempRange in high accuracy lab)?( it would be good if you show in code)

2. Till what point It can give range accurately?(for me it should be below 10cm ..and in steps of atlest 9cm,8cm,7cm etc...

regards

Karthik


AWR1642: Is there something wrong with my memory?

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Part Number:AWR1642

Hi:

    I want to add extra calibration data to my project in DSP, and configur it via CAN bus. I define the new memory section as follows in C674x_linker.cmd:

HSRAM:          o = 0x21080000, l = 0x4000
    CALIBRAM:		o = 0x21084000, l = 0x4000

and
    .calibMem > CALIBRAM

  in dss_srr_linker.cmd.

I wrote followeing code in my seperate calib.c file:

#pragma DATA_SECTION(g_pAzimuthCalib, ".calibMem");
#pragma DATA_ALIGN(g_pAzimuthCalib, 4);
/* Q - 14 Format*/
int16_t g_pAzimuthCalib[256] = {};

 When I'm debugging, everything is OK, while I download the .bin file to SFLASH, the program seems didn't work. if I wrote as follows:

//#pragma DATA_SECTION(g_pAzimuthCalib, ".calibMem");
//#pragma DATA_ALIGN(g_pAzimuthCalib, 4);
/* Q - 14 Format*/
int16_t g_pAzimuthCalib[256] = {};

It works again! Is there something wrong with my memory definition?

    Thank you!

DLP4500: ODB++ file for DLP4500 Light Crafter

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Part Number:DLP4500

Hi,

Do you have a ODB++ file for Garber data of DLP4500 Light Crafter ?
Please give me this file, If you have .


Best Regards
hiroyasu

IWR1642BOOST: Uniflash hangs when loading a precompiled .bin file

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Part Number:IWR1642BOOST

Hi

It may be a beginner's question... I started playing with the IWR1642BOOST module and tried to load the precompiled binaries to the board, but failed to do so. The Uniflash tool hangs immediatelly after successfully finishing the "Reading device version info..." and "** 1 files specified for flashing". The last message on the screen is "Checking file Type for appropriateness for this device..." and from here on the Uniflash is dead. This is the case with at all precompiled binaries from the toolbox I have tried to load.

Could it be the version of the IWR1642? My board does not have a sticker stating ES version, and I have downloaded the latest version of the industrial toolbox (2_5_2). There is, however, no message stating any kind of incompatibility.

Kind regards

Dušan

DAC8760: Analog output multiplexing with DAC8760

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Part Number:DAC8760

Dear all,

I'm wondering if there is a practical and safe solution to multiplex the DAC8760 analog output on three different outputs.

Basically I'm designing a 3-axis tilt sensor with analog outputs (0-5V, 0-10V, 0.5V-4.5V & 4-20mA) but I cannot use 3 different DAC8760 because the PCB space is an issue and it must be reduced.

I've noted this application node but I'm wondering if someone of you have already solve the issue with an alternative and simple solution.

Thanks in advance to anyone can help me.

LMX2571: Analog FM using direct FSK

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Part Number:LMX2571

Please find attached and clarify analog FM implementation using direct FSK modulation. Request you to fill up the blanks in attachment. 

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