Questions tagged [texas-instruments]

A manufacturer of semiconductors, both discrete and integrated circuits.

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Decoupling capacitors for ADC

I have this ADS6125 adc. In the datasheet it is written that this ADC uses internal decoupling: "capacitors on-chip eliminates the need for external decoupling" (p.45) "As ADS612X ...
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2answers
32 views

Texas Instruments ADC - Input Clock

I have a question regarding the ADCs ADS58B19 inputclock, this ADC can be clocked with LVDS. The data sheet says that Vpp = 700mV, which is +-350mV. The ADCs Vcm = 1.7V, is this the in and output Vcm? ...
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1answer
30 views

ADC - LVDS/LVCMOS Interface

I want to use the ADS58B18 from Texas Instruments. This ADC is differential and the outputs can set to either LVDS or LVCMOS with programming an internal register. I have a question regarding the ...
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24 views

Programming CC3200 Microcontroller and Separate Flash Without a Development Board

I have an "Alfie" device which has wifi and USB, but I never use this device, so would like to change its function. It uses the CC3200 microcontroller (which has a little ROM) and a separate ...
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22 views

Designing BMS for 4S LiIon Pack

currently I'm working on 4S(2P) BMS mainly focused on TI's ICs. I'm stuck at the start - First, for now I want to use BQ2954 IC for charger, and BQ77915 IC for balancing and protection. Now, I'm not ...
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2answers
58 views

What does a TL062 Op-Amp with output grounded and both inputs connected together with voltage divider mean?

So I'm studying Kilovoltmeters and subsequently using ADC's with resistor arrays and dividers from high voltage power supplies of all varieties. I've got a good idea as to what they are and how they ...
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101 views

What is this transformer, is it package only without coil or complete transformer?

I did a simulation on TI Power Bench for a isolated power supply, There I got transformer spec in BOM, Core=Wurth Elektronik , CoilFormer=Wurth Elektronik Core=150-2340 , CoilFormer=070-4477 Core Type ...
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31 views

How to calculate maximum switching frequency of TPS54160

The data sheet of the TPS54160 buck converter (https://www.ti.com/lit/ds/symlink/tps54160.pdf) includes a formula for calculating the maximum switching frequency due to the frequency shift protection. ...
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32 views

PCB header and microcontroller schematics for JTAG connection

I am using f28017f device from Texas Instruments and for my application I have to implement it on PCB. for debugging this device, I need JTAG connection. I will be using xds110 device for debugging. ...
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1answer
44 views

LM13700 control current appearing as voltage at output?

I've got an LM13700 in this VCA configuration, and for whatever reason the gain control input (I'm applying a triangle LFO, ranging from 2-7v) is appearing as a voltage at the output. Does anybody ...
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32 views

Problem using UART0 in TM4C123 Tiva C Launch Pad

I'm trying to interface UART0 with the my laptop using the ICDI the code I used is from Mazidi's book : ...
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1answer
40 views

MSP430FR2433 SPI data corrupted

I'm currently working with MSP430FR2433 Micro. I want to interface this micro with the following modules: LCD screen via SPI (https://www.orientdisplay.com/store/amc0802br-b-y6wfdy-spi-8x2-character-...
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40 views

What's up with TI TIVA's SPI controller?

UPDATE: The issue with debugging someone else's code is you just have to assume everything is being coded correctly. I just checked datasheet and there was this BSY (bus busy) flag bit in status ...
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43 views

voltage monitor using tps3897 - understanding

Although I have some experience with circuitry it is mainly analog experience. therefore I can't solve the question i have been given in interview. I have been asked what does the next circuit do: ...
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39 views

BOOSTXL-DRV8323RS Set up - trying to spin motor in 3x PWM mode

I have been following the datasheet for the TI DRV8323 and the BOOSTXL-DRV8323R dev kit. I am trying to spin a BLDC motor by sending 3 SPWM waves (all 120 degrees phase shifted) generated by an ...
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15 views

Simulating TM4C123 Tiva C Launch Pad

I have the board and I have done some interfaces with it so far. Now I'm trying timers and interrupts, and I don't have an oscilloscope to examine square waves. Is there any simulation software for it?...
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50 views

How to solve the compiler error of USB debugging probe of C2000 series Texas Instrument Microcontroller?

I am using Launchpad-F28027F to generate PWM for buck converter. I am currently using simple example of PWM from Resource Explorer of CCS but it's no working due to the error shown in the below ...
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1answer
60 views

Two different ways to open a project in IDE's for MCUs

I am using following 3 different IDE's for ARM based MCU's. TI's CCS ST's CubeIDE IAR's Workbench I have to move the entire projects which are build on each of these IDE's on different PC's from ...
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2answers
66 views

What are the draw back of having multiple smps stages in series?

Application output - 100V 10mA Input - single cell lipo 3.7V 5000mAh overall efficiency > 85% required. I tested Texas instruments power bench. Texas instruments power bench cannot generate ...
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1answer
20 views

BQ51050B compatibility criteria

I started another project where I need to charge a few devices (preferably simultaneously) wirelessly. They all have BQ51050B and the corresponding coil/battery. I need to know what I should look at ...
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1answer
234 views

LTspice error “could not open Library file” when trying to use TL431 model from TI

I downloaded the LTspice model of TL431 from the Texas Instruments website, but I am not able to simulate the circuit given below due to this error: "could not open Library file" https://www....
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1answer
21 views

Store uart incoming data in sd card interfaced with CC2652RB LP [closed]

I am using TI Simplelink CC2652RB LP for my project. I have to store UART incoming data in text file created in SD card interfaced with cc2652RB LP via SPI. Can I use the following logic along with ...
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25 views

MIPI/CSI Retimer

I am trying to interface my Jetson Nano with a CSI camera through a SN65DPHY but have been unsucessful so far. I do know the routing is OK because the second camera, which is closer to the Jetson does ...
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1answer
38 views

Digital Output as an interrupt Source?

So, I have the Stellaris Card from Texas Instruments. I am trying to make a digital output ...
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2answers
39 views

TPS54383 Thermal Pad

I'm experimenting with a TI Dual Output Buck Converter, the TPS54383. In section 11.3, on page 43, the datasheet says 11.3 PowerPAD Package The PowerPAD package provides low thermal impedance for ...
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41 views

Tiva-C Launchpad TM4C123 SPI

I'm currently trying to setup an SPI link between a Tiva C series launchpad and an LCD screen I've got lying around. I've configured the SSI0 peripheral according to the manual, and I measure the ...
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1answer
33 views

S Bracket Transistors and Reverse Breakdown diodes in Texas Instrument 74LS32 DataSheet?

Hi, I have included the image of the schematic of the Texas Instrument 74LS32. Basically the chip consists of 4 OR gates and the schematic shows the logic how 1 of those gates is set up on the chip. ...
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33 views

How to generate PWM with different frequencies and duty cycles?

I am going to use TMS320F28027 for PWM generation. I have to generate 5 different frequencies of PWM with different duty cycles at a same time. How it could be implemented? Can I use a single PWM ...
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28 views

Having trouble uploading code to TM4C123GXL from Code Composer Studio on Mac

I am using a Mac to develop a program for my TI EK-TM4C123GXL board. However, I am having trouble actually uploading the code to the board. I keep running into the errors below. I copied the header ...
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1answer
49 views

Zero Crossing Detector using comparator

I followed SNOA999 for a zero crossing detector using TLV7011 as a comparator. I am not sure about short-circuiting grounds between AC and DC power sources. My concern is creating negative currents on ...
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1answer
89 views

Can I “sum” internal ADC channels to achieve extra bits resolution?

First of all I am a newbie in electronics. I am building some weight scale applications using (as seen everywhere) load cells wired to a HX711 ADC and a ESP8266. I am now giving a try to the Texas ...
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39 views

BeagleBoneBlack PRU from Scratch

I am a newbie when it comes to embedded systems and I am an even bigger newbie when it comes to working with the BeagleBone Black (Rev C in my case). I want to play and discover the PRU on the BBB, ...
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1answer
49 views

Wrong SPI Signals in Logic Analyzer

We're trying to send some informations above SPI. So we've coded a few lines of code for that purpose. But in the picture you can see, sometime data cannot be retrieved accurately. The original data ...
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3answers
60 views

Is 23.8°C/W junction-to-ambient thermal resistance for a TO-220 in this datasheet with or without a heatsink?

I've been reading datasheets all night trying to figure out which LDO linear regular would give me the most current at 3.3V with no heatsink from a 2S LiFePO4 battery (assuming a max voltage range of ...
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2answers
50 views

What does this mean in datasheet : 2k: Ipgm/10 for term; Ipgm/5 for precharge

I was referencing the datasheet for BQ24040 Texas Instrument IC and could not understand the following statement and what does it actually mean. I am new to this. Can some one explain what does it ...
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18 views

Webench coil selection for UCC28634DR AC-DC converter

I have being trying to design an AC-DC adapter for a freezer project I'm working with. After a couple of days researching I came across Texas Instruments Webench, which helped a lot. Although most of ...
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1answer
38 views

Unknown schematic symbol in BQ27750EVM schematic by texas instruments

My sincerest apologies if this is a duplicate question. Disclaimer: I did my best to crawl through the forums to see if I could find the answer and after an hour, I am lost. With that out of the way, ...
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1answer
37 views

Limiting the current with the LM2679

I'm building a power supply, and I'm trying to see if the LM2679 will fit my needs. I like how it's similar to the LM2596 as well as the fact that it has a pin to limit the switch current. However, I ...
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1answer
43 views

How to check maximum frequency generation capability PWM of microcontroller?

I am new to Texas Instruments Controller. By checking the datasheet how can we come to know about the maximum output frequncy generation of PWM of the controller. Is it related to the clock frequency ...
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46 views

What is the most efficient way to convert high Vin DC to low Vout DC? [duplicate]

I need voltage regulator to convert high range of Vin 20-60V to fixed 5 or 12V and the maximum output current is 200mA. What could be the efficient way to do this?
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1answer
49 views

How to send different data to three DACs at the same time?

I am building ultrasonic system that needs to generate three different signals for three transducers at the same time.The system is controlled via DSP. Currently I have a DAC with 4 outputs, but as I ...
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249 views

Optimizations for LM2596, Positive and Negative Voltage

I'm working with the LM2596 to get a positive and negative voltage using two separate IC for each. I'm having trouble optimizing them for a 1 A load. I followed along with TI's WEBBENCH designer to ...
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1answer
75 views

Saving a variable between reboots on a microcontroller without using flash memory

I am developing a bootloader and have some trouble jumping from the bootloader to the application. As far as I can see the problem is because I am doing certain initializations in the bootloader which ...
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1answer
36 views

c2000 microcontroller sensorless speed control implementaion

I want to know some detail about TMS320F28335 TI microcontroller for sensored and sensorless speed control of SPMSM. I have implemented the MATLAB simulation and the model is working well but for ...
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1answer
59 views

Rectifier to Step Down Buck Regulator

I'm trying to simulate an AC to DC voltage regulator. I'm trying to go from 115 Vrms to 5 V DC at 1 amp max, though 0.5 amps nominally. I initially thought of using the LM317 at first, but after ...
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3answers
101 views

Trying to switch between 12V and 5V, CD4066B analog switch

I want to switch between an output of 12V and 5V. I'm using a CD4066B (datasheet) Here's the pinout: This is my schematic: When I build this circuit, I end up frying the IC. What am I doing wrong? ...
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1answer
82 views

Stack error when jumping from bootloader to application

I have been trying to jump from my bootloader to an application for a while now but I can not figure out what is going wrong. I am hoping someone here might be able to help me. I am using Texas ...
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0answers
57 views

Imprecise bus error when setting Vector Table Offset Register. TI CC2652

I am developing a bootloader and want to jump to the application. I am new to this so I am not entirely sure I am doing it right, but as far as I know I have to change the value stored in the VTOR (...
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1answer
42 views

What is a programmable power-up sequencer?

What is a programmable power-up sequencer ? How to use it in a PMIC to power AM335x TI microprocessor ?
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33 views

How can I add a SVCall handler to the Vector Table of a CC2652 device

According to the CC26xx Driver Library documentation there are two options for adding interrupt handlers, one dynamically and one statically. The static registration of handlers seems to be the ...

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