Quantcast
Channel: Forums - Recent Threads
Viewing all 262198 articles
Browse latest View live

UCC28950 :Configuration of circuit

$
0
0

Part Number:UCC28950

Hi

Currently my customers are developing 600W class solar converters using SM72445 and UCC28950.

The configuration is as follows.

The company is trying to apply ucc28950 as a boost circuit.

Input: 48V, Output: 400V, Input maximum: 600W

Could you please review the circuit diagram below?

(Please visit the site to view this file)(Please visit the site to view this file)
I am currently in the process of reviewing the circuit schematic. I am busy, but can you help me?
I did not see the use to Boost Output, including me.

If it is 600W class, can it be configured as LLC IC?
At the customer company, it is said that the efficiency is not good when the input voltage moves when constructing the LLC. Is it true? I also heard that resonance is difficult to apply.
I think UCC25630X is also applicable if LLC is applicable.


CCS/TMDSHVMTRINSPIN: Unable to run motor

$
0
0

Part Number:TMDSHVMTRINSPIN

Tool/software: Code Composer Studio

Hi All,

Good Afternoon to all of u,

I am using TMDSHVMTRINSPIN kit to run 3 hp PMSM without Load.

In this kit i do the following changes;-

1) Shorted J2,J3,J4,J5,J7,J8.

2) Connected Banana Cable from BS1 to BS5 (I am working on Ac)

3) Connected Power adapter to 15V Dc(Included in Kit)

4) Connected Ac Supply To the Kit

and remaining things remain same.

Motor -3HP PMSM Motor without Load.(is it ok or any problem with motor).

Problem Facing:-I included one doc for that.

When i connected motor with Kit through all power supply,motor have to run or it required any software requirement.

Software - CCS8.2 , Guicomposer/webapps

The Control Card contains TMS320F28069 micro controller.

Please suggest me with all proper method , how i do this thing.

Please help me.

Thank You

Shikhar Gupta

SRC4190: Looking for an alternative to the AK4127

$
0
0

Part Number:SRC4190

Hi Team,

Could you please advise if we have any device similar to the AK4127? 

Thanks!

Roy Hsu

RTOS/CC1312R: Does CC1312 support 15.4 onchip oad?

$
0
0

Part Number:CC1312R

Tool/software: TI-RTOS

Hi TI friends:

  CC1310 doesn't support 15.4 onchip oad because flash size is too small.

  Does CC1312 support this feature?

 

Thanks

Linux/LAUNCHCC3220MODASF: dma size

$
0
0

Part Number:LAUNCHCC3220MODASF

Tool/software: Linux

Hi support;

I have config code of me as below.

.minDmaTransferSize   I must configure how reasonable.

static unsigned char tx_buffer_spi[816] = {0};
static unsigned char rx_buffer_spi[816] = {0};
void spi_slave_init_handler()
{

SPI_Params spiParams1;


if(spi_slave_init == 0)
{
UART_PRINT(ANSI_COLOR_YELLOW"[Slave SPI Start Init]\n\r"ANSI_COLOR_RESET);
SPI_Params_init(&spiParams1);
spiParams1.frameFormat = SPI_POL0_PHA0;
spiParams1.mode = SPI_SLAVE;
spiParams1.transferMode = SPI_MODE_BLOCKING;
spiParams1.transferTimeout = 1021;
/* spiParams1.transferMode = SPI_MODE_CALLBACK;
spiParams1.transferCallbackFxn = transferFxn1;*/
spiParams1.dataSize = 8;


slaveSpi1 = SPI_open(Board_SPI_SLAVE, &spiParams1);
if (slaveSpi1 == NULL)
{
UART_PRINT(ANSI_COLOR_RED "Error initializing slave SPI\n\r"ANSI_COLOR_RESET);
while (1);
}
else
{

UART_PRINT(ANSI_COLOR_GREEN"Slave SPI Init Done [%u]\n\r"ANSI_COLOR_RESET,slaveSpi1);
}
}

if(spi_slave_init == 0)
{
transaction1.count = 816;
transaction1.txBuf = tx_buffer_spi;
transaction1.rxBuf = rx_buffer_spi;
spi_slave_init = 1;
// spi_tranfer_handler();
}
// spi_slave_init = 1;
// SPI_close(slaveSpi);

}

.baseAddr = GSPI_BASE,
.intNum = INT_GSPI,
.intPriority = (~0),
.spiPRCM = PRCM_GSPI,
.csControl = SPI_HW_CTRL_CS,
.csPolarity = SPI_CS_ACTIVELOW,
.pinMode = SPI_4PIN_MODE,
.turboMode = SPI_TURBO_OFF,
.scratchBufPtr = &spiCC3220SDMAscratchBuf[CC3220SF_LAUNCHXL_SPI1],
.defaultTxBufValue = 0,
.rxChannelIndex = UDMA_CH6_GSPI_RX,
.txChannelIndex = UDMA_CH7_GSPI_TX,
.minDmaTransferSize = 200,
.mosiPin = SPICC32XXDMA_PIN_07_MOSI,
.misoPin = SPICC32XXDMA_PIN_06_MISO,
.clkPin = SPICC32XXDMA_PIN_05_CLK,
.csPin = SPICC32XXDMA_PIN_08_CS

thanks

CCS/CCSTUDIO: CoCreateInstance falide Error

$
0
0

Part Number:CCSTUDIO

Tool/software: Code Composer Studio

Hi there,

I'm using CCS3 and developing a DSP-Bios project with these settings:

Compiler version: TIv7.3.4

DSP/Bios version: 5.42.2.10

Device: TMS320C6418

The project has a .tcf file.

I was able to correctly develope and build my project  till something accidentally changed on the settings.

At the moment I'm able to compile but if I try to open the .tcf file trough the DSP/Bios Configuration Tool I get this error: "CoCreateInstance failed: hiervw.dll"

Before this error I was correctly able to open the .tcf file trough the DSP/Bios Configuration Tool straight from CCS3 project Explorer.

If I open with a text editor the .tcf file, edit it and compile, the compilation works correctly with the updated .tcf file.

If I copy the project into a different computer with CCS3 installed the tcf file is correctly opened with the DSP/Bios Configuration Tool.

Any suggestion about how to solve this?

Thank you

Regards

CCS/TMS320F28069: gMotorVars, InstaSpin motorware

$
0
0

Part Number:TMS320F28069

Tool/software: Code Composer Studio

Hi,

I'm using InstaSpin foc motorware and have some questions to some of the gMotorVars variables.

There is one variable in gMotorVars "SpeedRef_krpm" which sets the target speed of motor. But what is the variable "SpeedSet_krpm" for?

Same for "IdRef_pu" and "IdSet_A".

Thanks for any helping.

Best regards,

Dani

PMP21309: Clarifications in PMP21309 Ref design

$
0
0

Part Number:PMP21309

Hi

  Kindly clarify on the below regarding the reference design  PMP21309

1. What is the value of Lm, Lr and Cr ?

2. I was not able to find the datasheet of the payton transformer used in this design .. Is this a planar transformer or a non- planar transformer ? 

Thanks

Lenin.


CCS/TIDA-00961: Why the internal DAC can't be synchronized with EPWMSYNCO?

$
0
0

Part Number:TIDA-00961

Tool/software: Code Composer Studio

Hi !

My internal DAC of the CMPSS4(TMS320F280049) can synchronized with SYSCLK and  it make my peak current mode PWM work no problem.

But it can't be synchronized with EPWMSYNCO.

My setting were shown as following:

1. CMPSS4  COMPDACCTL:   [DACSOURCE]=0x0,   [RAMPSOURCE]=0x06 --> EPWM4SYNCO    [SWLOADSEL]=0x1 --> DACHVALS triggered by EPWM4SYNCO

2. EPWM4   TBCTL[SYNCOSEL]=0x1 --> EPWM4SYNCO output when CTR=ZERO

3. I make EPWM5 synchronized with EPWM4 and their output signal are synchronized so I confirmed my EPWM4SYNCO setting is correct

Would you please to show me your solution?

Best regards

Jack Chung

TPS3852: https://e2e.ti.com/support/power-management/f/196/t/722773

$
0
0

Part Number:TPS3852

Hi Team,

Wanted to know what will be the voltage level at WDI pin if it is let open. We are observing 1.2V when we are not driving the signal.

Is this acceptable?

CCS/LAUNCHXL-CC26X2R1: CCS Release build vs Debug Build

$
0
0

Part Number:LAUNCHXL-CC26X2R1

Tool/software: Code Composer Studio

When I try to build my release version I get these errors:

Description Resource Path Location Type
Failed linktime optimization null: Failed linktime optimization ble5_project_zero_cc26x2r1lp_app C/C++ Problem
gmake: *** [all] Error 2 ble5_project_zero_cc26x2r1lp_app C/C++ Problem
gmake[1]: *** [ble5_project_zero_cc26x2r1lp_app_FlashROM_Release.out] Error 1 ble5_project_zero_cc26x2r1lp_app C/C++ Problem
symbol "ToggleVent_createChangeVentTask" redeclared with incompatible null: symbol "ToggleVent_createChangeVentTask" redeclared with incompatible ble5_project_zero_cc26x2r1lp_app C/C++ Problem

I've looked in the build settings and verified as much as I know how that they are the same.  I'm not sure why it builds fine in debug but won't build in release.

TPS61197: Question about output capability

$
0
0

Part Number:TPS61197

We want to use the TPS61197 to drive an LCD panel backlight. The parameters are:
Input voltage: 12V
Output voltage: 37V
Output current: 550mA
The application is fairly demanding, so I need to know that operation at these levels will not cause undue stress. If the TPS61197 is not suitable, what would you suggest as a substitute?

AWR1642BOOST: AWR1642BOOST

$
0
0

Part Number:AWR1642BOOST

Request to please assist in resolving attached error as i am not able to contact the EVM.

Compiler/IWR1642BOOST: Compiler issue

$
0
0

Part Number:IWR1642BOOST

Tool/software: TI C/C++ Compiler

To compile code for the DSP core(C674x), the version 7.4.16 compiler must be installed under C:\ti. Download link

The corresponding site is not working.

Linux/AM5718: Compiling modetest source code


PGA300: Digital compensation

$
0
0

Part Number:PGA300

Hello,

I would like you to confirm about below.

* According to datasheet, third-order temperature coefficient (TC) and nonlinearity (NL) algorithm is implemented in PGA300.

I believe that this is realized by software(user can not change this code. in other words, "fixed" program).

However, according to above diagram, "digital gain" and "digital offset" portion are also implemented in this device.

TI describe how "digital offset", "digital gain" and "TC and NL" are used in "7.3.17.1 Digital Gain and Offset" and "7.3.17.2 TC and NL Correction".

However, there is no description about how user can get coefficient "a0,a1,b0,b1,hx,gx,nx,mx".

The question is below.

1. Are coefficient "a0,a1,b0,b1,hx,gx,nx,mx" calculated automatically in PGA300 internally ?

2. If so, how user can get above coefficent ?

Best Regards,

DAC8775: SPI programming

$
0
0

Part Number:DAC8775

Hi team,

May I know how to get SPI CPOL and CPHA programming information? We don't find it in datasheet. Thanks.

Regards,

Allan

AM5728: why Arm A15 core1 runs at least 10 times slower than core0 (master core)?

$
0
0

Part Number:AM5728

I have evm AM5728 board and I created .out files of diag examples under <pdk_install_path>/packages/ti/board/bin/evmAM572x/armv7 with  using

To build the diagnostic examples:

  1. cd <PDK>/packages/ti/board/diag
  2. make <BOARD>


commands.  I have installed sdk rtos v5.01 and ccs v8.1. I ran all diag examples on arm cortex a15 core0 (master core) with .out files that I created with above commands and they perfomed perfectly fine. my board is booted from SD card with windows RTOS image you supplied. 

But when I tried to run the diag examples on arm a15 core1, it executes at least 10 times slower than core0. For example, consider led_diag_test. Core0 toggles LEDs (4 built in user LEDs) much faster than core1. I tried to set OPP to HIGH with using "scripts" segment in ccs but nothing has changed. I also tried to set OPP to HIGH with changing the AM572x_PRCM_Clock_Config_OPPNOM(); line to AM572x_PRCM_Clock_Config_OPPHIGH();  in the AM572x_startup_common .gel GEL file but I could not get 1.5GHz speed, core1 keeps its slow clock speed feature. I checked the clock values with the scripts>AM572X PRCM CLOCK GetConfig and this function outputs that I successfully set OPP to HIGH (it shows clock speed for a15 = 1.5GHz and OPP=2 which is OPP HIGH) but core1 still execute with the same slow speed like there is no modification made. I am connecting core0 first all the time. Can you help me what I am missing here?

any help will be appreciated

thanks

CC2538: Error Occurred while flashing the code

$
0
0

Part Number:CC2538

Hi all,

I have developed a code for CC2538 MCU with IAR IDE. I am using i-jet debugger device for debugging. 

while I am trying to flash the code, I have got the error like Fatal Error: Failed to connect to CPU. Session Aborted. I have checked the USB cable connections also. What will be the problem? Help me to solve this problem. Thanks in advance.

 

Regards,

Vijay.

DS280DF810EVM: missing drivers

$
0
0

Part Number:DS280DF810EVM

Hi,

I just get a DS280DF810EVM  evaluation board, but the PC doesn't recognize it (unknown device). In addition, I can't find a drivers for this board. can anyone help me in the issue?

thanks,

Viewing all 262198 articles
Browse latest View live


<script src="https://jsc.adskeeper.com/r/s/rssing.com.1596347.js" async> </script>