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LM5117: LM5117

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Part Number:LM5117

Dear All,

We  have designed DC-DC converter using LM5117 IC as per steps given in datasheet. But we are facing some issue while testing it. 

Issue faced:
1) The RT pin is pull down with the resister value of ~22Kohm for getting switching frequency 230Khz. But we got SW freq 110Khz instead of 230Khz.
2) When we applied  36V as Vin, the Output voltage was 14.47V with no load. But on applying 1Amp load, the output voltage dropped to less than 1V.

Below attached is the schematic.

(Please visit the site to view this file)


LMX2571EVM: USB2ANY.dll example, Control 2 x LMX2571EVM board

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Part Number:LMX2571EVM

Hi

Our company create special synthesizer contains two LMX2571, to prototype we use two LMX2571EVM boards and two USB2ANY interfaces to control the boards separately according TICS Pro Software. The output frequency depends from two synthesizers. Our solution is weak and very cumbersome because each frequency change requires from us seperate devices configuration.
We looking the example of use USB2ANY.dll which will helps us create our configuration scripts through SPI interface. To achieve as assumptions we have to SPI interface control and two GPIO (as CS).

We found in Internet some USB2ANY document but commands from it do not work.

www.caprilion.com.tw/USB2Any.pdf

Best Regards
Mateusz Drewniak

TRF7960A: POR with EN=0

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Part Number:TRF7960A

Dear Soppot Team

Our customer is using TRF7960A. They set EN=0 to change the device to POR state.
However, they see that IRQ is High after setting EN=0 as the attached file.
Could you advise me why IRQ is high state (IRQ line is pull-up)?

Also please let me know how to reset (POR) the device from the condtion of IRQ high
when they request  POR with EN=0.

Best Regards,

NA.

(Please visit the site to view this file)

TINA /香料/ UCC2897A: TINA /香料/ UCC2897A: TINA /香料/ UCC2897A:TINA /香料/ UCC2897A:

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Part Number:UCC2897A

Tool/software:TINA-TI or Spice Models

Hi

I simulated the UCC2897A and got the negative current in second-side rectification diode SD1.
I think there is something incorrect in the scheme.

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

PCM1865: Noise level in two series

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Part Number:PCM1865

 Hi,

I have written an email directly to the support engineer, but my question hasn’t been answered yet.

I’m using PCM1865 in pdm mode to process data from digital microphone and send it to microprocessor ESP32. I use sample frequency 131kHz and PCM config as followed:

pcm_wirte_reg( PCM186X_REG_PAGE_SELECT, PCM186X_REG_RESET );           //Resetowanie PCM

 

pcm_wirte_reg( PCM186X_REG_PAGE_SELECT, 0x03 );                                   // select Page3

pcm_wirte_reg( PCM186X_REG_MIC_BIAS_CTRL, 0x00 );                           // 0x15

 

pcm_wirte_reg( PCM186X_REG_PAGE_SELECT, 0x00 );                                   // select Page0

pcm_wirte_reg( PCM186X_REG_PWDOWN_CONF, 0b01110001 );                       // 0x70 - standby

 

pcm_wirte_reg( PCM186X_REG_ADC1L_IN_SEL, 0b01000010 );                      // 0x06 - VIN1L2

pcm_wirte_reg( PCM186X_REG_ADC1R_IN_SEL, 0b01000010 );                      // 0x07 - VIN1R2

pcm_wirte_reg( PCM186X_REG_ADC2L_IN_SEL, 0b01000000 );                      // 0x08 - none

pcm_wirte_reg( PCM186X_REG_ADC2R_IN_SEL, 0b01000000 );                      // 0x09 - none

 

pcm_wirte_reg( PCM186X_REG_GPIO_1_0_FUNC, 0b00010001 );                     // 0x10 - GPIO0 and GPIO1 as DIGMIC_IN0 and DIGMIC_IN1

pcm_wirte_reg( PCM186X_REG_GPIO_3_2_FUNC, 0b00000001 );                     // 0x11 - GPIO2 as DIGMIC_CLK

pcm_wirte_reg( PCM186X_REG_GPIO_PULLDOWN, 0b00000000 );                     // 0x15

 

//pcm_wirte_reg( PCM186X_REG_DPGA_VAL_CH1_L, 0x00 );                        // 0x0F DPGA gain = 0dB (default)

//pcm_wirte_reg( PCM186X_REG_DPGA_VAL_CH1_R, 0x00 );                        // 0x16 DPGA gain = 0dB (default)

 

pcm_wirte_reg( PCM186X_REG_DPGA_CH_2_1_CTRL, 0xff );                   // 0x19 - DPGA manual config (set 0dB)

 

pcm_wirte_reg( PCM186X_REG_AUDIO_INTERFACE_FORMAT, 0b01000100 ); // 0x0B

pcm_wirte_reg( PCM186X_REG_TDM_OSEL, 0b00000000 );                          // 0x0C

pcm_wirte_reg( PCM186X_REG_TX_TDM_OFFSET, 0b00000001 );                     // 0x0D

pcm_wirte_reg( PCM186X_REG_RX_TDM_OFFSET, 0b00000001 );                     // 0x0E

 

pcm_wirte_reg( PCM186X_REG_DIN_RESAMP, 0b00000001 );                   // 0x1B

pcm_wirte_reg( PCM186X_REG_CLOCK_CONF, 0b00101110 );                   // 0x20

 

pcm_wirte_reg( PCM186X_REG_PLL_FRAC_JD_DIV_LSB, 0 );                   // 0x2C

pcm_wirte_reg( PCM186X_REG_PLL_FRAC_JD_DIV_MSB, 0 );                   // 0x2D

 

pcm_wirte_reg( PCM186X_REG_INT_CONF1, 0x00 );                               // 0x60

 

pcm_wirte_reg( PCM186X_REG_DSP_CTRL, 0b10011100 );                          // 0x71

 

pcm_wirte_reg( PCM186X_REG_DSP1_CLOCK_DIV,           0 );        // 0x21

pcm_wirte_reg( PCM186X_REG_DSP2_CLOCK_DIV,           0 );        // 0x22

pcm_wirte_reg( PCM186X_REG_ADC_CLOCK_DIV,            7 );        // 0x23

 

pcm_wirte_reg( PCM186X_REG_PLL_SCK_CLOCK_DIV, 1 );        // 0x25

pcm_wirte_reg( PCM186X_REG_MCLK_CLOCK_DIV,           3 );        // 0x26

pcm_wirte_reg( PCM186X_REG_MSCK_CLOCK_DIV,           63 );       // 0x27

 

pcm_wirte_reg( PCM186X_REG_PLL_P_DIV, 1 );                             // 0x29

pcm_wirte_reg( PCM186X_REG_PLL_R_DIV, 1 );                             // 0x2A

pcm_wirte_reg( PCM186X_REG_PLL_INT_JD_DIV, 8 );                        // 0x2B

 

pcm_wirte_reg( PCM186X_REG_PLL_CONF, 0b00000011 );                          // 0x28 - start PLL

vTaskDelay( 50 );

pcm_wirte_reg( PCM186X_REG_PWDOWN_CONF, 0b01110000 );                       // 0x70 – run

 

 

 

I have two types of PCM series 6ATG4 A93F and 48TG4 C240. The problem is that the noise level is dramatically higher in 48TG4 C240. I compare the noise with a plot in datasheet, which says that useful signal should be -120dB. I count and 6ATG4 A93F have about -140dB but 48TG4 C240 have -100dB which have significant impact on received data. I attach a time course and fft of these two types of PCM. These two elements were on the same PCB board and the same software configuration.

Best regards,

Konrad Koperek

TMDSADAP180TO100: TMDSADAP180TO100

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Part Number:TMDSADAP180TO100

Does anybody know the horizontal connectors used on this assembly?

TMDSADAP180TO100

I am using a 2837x control card and are looking for sources for the connectors.

Thanks, Dave.

DRV8301-69M-KIT: InstaSPIN-MOTION GUI, Problem with identification with file user.h

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Part Number:DRV8301-69M-KIT

When I upload the new appProgram.out with the new user.h parameters, the InstaSPIN GUI identifies the wrong KIT (HV REV 1.1 instead of DRV8301 KIT-REVD). Where could I have made some mistakes?

BQ24103A: Charge current Soft start feature?


CCS/C2000WARE: Piccolo Microcontroller - Flash ECC test

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Part Number:C2000WARE

Tool/software: Code Composer Studio

Hello,

I am trying to introduce data error in flash through introduce bit error option in linker output tab (in Code composer studio).

I have declared a constant variable and modified one bit value through CCS and the value has been changed but flash ECC single bit error is not detected.

i have uploaded the workspace below.  

Note : linker file : 28004x_flash_api_lnk.cmd

           test case : flashapi_ex1_program_autoecc.c

let me know if you need more details.

(Please visit the site to view this file)

BQ4050: How to write in data flash when BQ4050 communicate with micro controller via SM BUS?

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Part Number:BQ4050

Hi 

I use bq4050 in my project and I unable to write in to the data flash of bq4050.

I also refer your datasheet and technical reference. I send the block command 0x44 + data address + data(in little endien) and read 34 byte. But problem is not resolved.

Can you please tell me how to write Data in DataFlash?

Regards

Rahul  

CCS/TMS320F28069M: HOW TO COPY CODE AND RUN INTO ANOTHER PC

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Part Number:TMS320F28069M

Tool/software: Code Composer Studio

I am using CCS8.2.1 in my PC and created code for CAN communication, which is giving me output without any error.

I am copying same code (ecanbacktoback.c) file and trying execute using another PC with same CCS8.2.1 version, execute without error but not generating output.

So tell me how to copy the file. I have copied completed project from workspace folder and copied into another workspace folder of another PC.

Also included include files too.

Thanks in advance.

TPS61194-Q1: LED could not work normally,and fault showed the sch of LED is open

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Part Number:TPS61194-Q1

Hi Team,

  I am confused with this T-resistor network calculation.

Which one to follow? Attached Excel calculation or attached snap.

If I try same resistor values from snap in the resistor calculation excel, Vboost value calculated is different  and not 20V or 30V or 40V.

Kindly revert asap.

Thanks and Regards,

Vidhya

TPS3813: using TPS3813 to generate a 22 second reser watch dog

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Part Number:TPS3813

Hi ,

My customer is using this part for design, they want to have 20~25 second reset window. 

the Cext is set to 56 nF but the reset time can only achieve around 16 second. 

It should be 22 second originally. 

I just find that there are errors for the reset time setting if using the external cap 

May I ask that is it because of the place mark in green causing this problem? 

the 75% of 22 sec is around 16 sec 

Please see the schematic from customer and let us know if there are problems need to fix 

Thanks for your help. 

TLV62085: Switching freq & Iout

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Part Number:TLV62085

Hi,

Could you please give me advice for below questions?

1. Switching Freq is decreasing from 300mA load in Vin = 2.5V as below information. Is there idea why switching freq is decreasing in only Vin = 2.5V?

2.  The calculation for fPFM uses Iout. I guess VOS read Iout. If my understanding is correct, could you please let me know how to get Iout with VOS? (Is there internal current sense?)

Regards,
Nagata.

CCS/TMS320C6713B: How take an audio input? And Libraries required for taking an audio signal through line in or mic in ?

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Part Number:TMS320C6713B

Tool/software: Code Composer Studio

I am unable to take an audio signal as input.  I need some tutorials to work on it. My work is on noise cancellation. So, please guide me how to start.


INA219: Data Hold Time in Standard Mode

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Part Number:INA219

Hi Team,

Could you please provide the Data Hold Time information (t(HDSTA) & t(HDDAT)) in Standard Mode (100 kbps)? Thanks!

The datasheet lists the information in Fast and High-Speed Modes only.   

Best regards,

Sam Ting

TMDSEVM437X: Need a verified inf information on EVM4379 Android OS

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Part Number:TMDSEVM437X

Dear Team

 I have bought the EVM4379 Module from EMA-TECH China. Once they promise me the board supports the Android OS  V6.0.   But now they said  "TI don't have technical support for Android OS officially " 

Now the question is the EVM for AM4379 Processor Doesn't Support  Android OS? 

ISOW7821: ESD Discharge Test Withstand

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Part Number:ISOW7821

Dear Ladies and Gentlemen,

In my new design the device must withstand an ESD discharge test as specified in EN 61000-4-2 Level 4. This means that the capacitor of 330 pF of the test generator is charged to 8 kV and discharged via 330 Ohms into GND of the isolated side. If no stitching capacitance is used this means that the isolated GND charges to 8 kV against non-isolated GND. Unfortunately I cannot find specs in the datasheet directly related to this test.

My questions are now:

1. Will the device pass this test without isolation barrier breakdown without any additional measures?

2. If yes, which of the specs would guarantee this (V_IOTM production test, V_IOSM qualification test)?

3. If not, which ESD bypass components (i.e. suppressors) do You recommend between isolated and non-isolated GND? Gas discharge tube, TVS, varistor?

4. Since the specs are equal, can I assume Your answers are valid for the ISOW784x as well?

Thanks and best regards!

TMS320DM8148: Do the Video in ports allow a single clock jitter in vertical timing?

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Part Number:TMS320DM8148

Hi

We are planning to connect a video bus from an FPGA to the TMS320DM8148.

We would like to know if the video in ports {A,B} allow a single clock jitter in vertical timing?

Thanks

BQ24610: Shorting Source pin of BATFET with System Load

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Part Number:BQ24610

Hi,

I have a doubt regarding the source pin of the BATFET tht is used in BQ24610

Is it mandatory to short the Source pin of the BATFET with the System load path as encircled(in red) in the attachment(BQ24610.JPEG)?

Or else Can i treat it as two seperate path(BQ2610_ALTERNATE.JPEG  )? As attached in the image Please suggest whether the battery must be connected to the battery charger IC when no adaptor is connected ?

Request you to answer this ASAP, because I am running out of time

Regards,

Karthik

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