Questions tagged [texas-instruments]
A manufacturer of semiconductors, both discrete and integrated circuits.
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TI synchronous buck converter went up in smoke, where do i start?
So I’m using the following device 'TPSM63606RDLR'. Everything looked perfect for multiple days, but yesterday it start smoking. I did move the PCB and there are some LED strips connected externally to ...
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INA226 Vbus voltage reading has a 1.5% error on all measured voltages
I have an INA226 module with a 0.1 Ohm shunt resistor, here's the schematic:
Device powered from 3.3V (ESP32 regulator's voltage).
Since I only wanted to test the voltage monitoring function, I ...
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Using VOUT to Power Up a DC-DC Switching Regulator
I am trying to use LM5117 to convert 36V (VIN) to 32V (VOUT) for constant current constant voltage application. It seems the datasheet is saying if the VIN > 14.5V I can use VOUT with a Zener diode ...
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Is it possible to multiplex thermistors for multiple cell battery configurations for the BQ25756 or other JEITA charge ICs for spaced apart cells?
I'm trying to figure out how to safely implement fast charging using the BQ25756 with a most likely 2s (though up to 4s is possible) layout of physically spaced out cells.
I haven't fully decided on ...
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Is this charge controller datasheet schematic an idea circuit to use?
Background - Software Engineer with an interest in EE.
I'm looking to include a bq2000 battery charge controller in a circuit that I'm designing. I'm looking to use a bq2000 since it can use multiple ...
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UCC25800 PSpice model
I downloaded the PSpice model of the UCC25800 from here. I then tried to create a model for LTspice by opening the .lib file within the folder and then creating a symbol in LTspice.
But, when I opened ...
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Design a ESC using TI's DRV8332 [closed]
I'm actively engaged in the development of an Electronic Speed Controller (ESC) utilizing the DRV8332. I'm seeking clarification on the purpose of the bootstrap pin in this specific application. ...
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PWM signal gets disrupted when writing to a file (TMS320F28379D)
I am trying to establish a form of communication between my DSP (TMS320F28379D launchpad) and a .py script on my laptop. I have a .csv file with 7 duty cycle values from 0.2 to 0.8. My objective is to ...
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Output capacitance deviation for TI's TPS40210 Boost Converter application
I am hoping for some feedback, thoughts, or clarity regarding a discrepancy in output capacitor values between what I calculate, a reference design in the datasheet for TI's controller, and TI's ...
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MSP430 i2c txn buffer not moving second buffer command
In this code i have used B0 I2C module.
Problem - I f i I2C_Txn_byte() to send any command it sends the it the first time but doesn't get in the interrupt ISR again
for Example
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Boost converter gets hot
I'm building a LCD backlight power supply boosting 5 V to 12 V.
The max current draw from the panel is 12 V 0.4 A.
I am using LMR60214. But the IC is getting hot to touch at full brightness.
I am ...
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Thorlabs PC4QM With TI DRV2700EVM
I am working with a 650nF Thorlabs PC4QM piezo load, whose information I leave attached. And to carry out the operation I'm considering a Texas Instruments DRV2700EVM, has anyone had experience ...
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MSP430 Program Not Running Outside Debugger
I'm using a MSP430g2231 with EXP430G2 launchpad and CCS.
My code runs fine in the debugger, but when I try to burn it to the MSP and run on external power it doesn't run. It appears that it is not ...
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DC/DC split rail converter like TI's Fly-Buck™ coupled inductor topology but with a non-inverting buck converter
Introduction
First of all, I hope you can read this through. It's rather long!
I was trying to design a DC/DC converter for a Class-D amplifier that requires a 48V input and also an auxiliary 12V ...
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How to get the transfer function out of a Bode Curve on a datasheet?
I am trying to find the transfer function of AMC1350 out of its datasheet. I dont have any information about which degree of a lowpass filter or what kind it has. DC gain is 2/5. Cutoff frequency is ...
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What is the difference between SN74HCxxN and SN74HCxxAN parts?
I'm trying to compare between two different parts on Digikey: the SN74HC148N and the SN74HC148AN. Both pages link to the same datasheet, which does not list anything to do with an AN suffix. What is ...
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What is the meaning of the "E" in the part number of Texas Instrument's CD4000 series?
Most CD4xxx chips come with a part number of CD4xxxBE or CD4xxxUBE.
Official documentation tells you that B and UB stand for buffered and unbuffered outputs respectively, and mentions that the last ...
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Picking components for a battery power pack
I am a first-year Computer Engineering student building my first PCB and decided to go ahead and build a battery pack similar to the Shargeek Storm 2. I am using an STM32F103C8T6, an SPI-controlled ...
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Different Ground reference
I plan on making my own BMS for a 12S battery pack, and I found TI's TIDA BMS board and decided to use it as a reference to gain some understanding on how to develop safety circuit for the board. ...
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DC-DC variable resistor's side
I plan make DC-DC mini-PCB PCB like it. In my schematic I want regulate output voltage. Because of it I made R1 as variable resistor. In my schematic I am afraid that middle pin of variable resistor ...
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How do you use a DAC IC?
I'm attempting to use a DAC0802 chip from Texas Instruments, but I can't figure out why it's not working.
Before anyone asks, yes, I've read the datasheet.
Below I've added a diagram of the voltage on ...
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CC2533 chip is not recognized by CC debugger
I'm trying to connect CC debugger to a board with CC2533
I've connected GND,DC,DD,RST between the boards.
The board is powered externally with 5V.
I've powered the target board and connected the ...
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Understanding TXB0104 logic level shifter from TI
I’ve been reading through the data sheet and have been having trouble finding an answer. I’m looking to use this to communicate SPI between a 5V mcu and a 3V3 device. Can the TXB shift the 5V to 3V3 ...
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Boost converter TPS61040 output voltage higher than expected
Based on the datasheet of TPS61040, the output voltage of this boost converter is
$$V_{out} = 1.233V (1+\frac{R_1}{R_2})$$
Picture edited to show output capacitor
The input voltage is from USB which ...
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How to identify an integrated circuit without its datasheet?
I'm not sure if this is the right forum for the question, but I'm not sure where else to go.
Recently, an electronics component distributor from where I live (Cordoba, Argentina) has discarded some ...
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How to calculate the DeadBand time for H-bridge in Cycles
I am using L298n H-bridge driver and using Texas Instruments tiva c tm4c123gh6pm microcontroller. According to the datasheet (I am using source rise and fall delay because according to my ...
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What's the difference between Texas Instruments V62/06623-01XE and MAX3232MDBREP?
I'm using a MAX3232 but given different production codes with the same package (V62/06623-01XE, MAX3232MDBREP), is there any difference between them?
Can the two be used as substitutes for each other?
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Errors when importing TI PSpice component to Altium
I am trying to import a PSpice model of the TPS22811 into Altium without success.
What I did:
Download the model from the TI website
In Altium, edit the simulation property of my component and ...
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Are the Spice models for the TL082 and TL084 wrong?
I am working on a simple phase-lag circuit schematic using LT Spice, and, due to some project specifications, would like to simulate the behavior of the circuit specifically with FET-Input Operational ...
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CC1125 tramsmit data from the nanosatellite to ground station
does the chip cc1125 can transmit data between nanosatellites to ground stations the distance between them is up to 400km with band frequency UHF from uplink and vhf of the downlink.
If yes can use ...
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How current gets separated in multiple SW pins in buck converter?
In some high current buck converters, there are multiple SW pins for output current. How the current gets divided between them?
Example, lets consider a buck convertor has 5 SW pins and sourcing 30 A ...
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Low-side gate driver consistently shorts VDD to GND upon circuit power-up
I am using the UCC27423DGN dual low-side MOSFET driver as a current sink in order to drive some piezo elements. In general the gate drivers I am using are inverted, so on a high pulse on the Pulse_A/B ...
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Problems Comparator II of this CD4046 for LTspice
I downloaded a CD4046B model from user ale_t, which can be found here:
https://www.electro-tech-online.com/threads/new-spice-model-for-cd4046b-phase-locked-loop-ic.149093/
However, the Phase ...
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DRV8871 output voltage drop down error identify
I'm building a brush gear motor driver with TI drv8871. No speed adjustment needed, only forward/reverse is wanted.
The input voltage is 24V. The motor has a small coil resistance about 2.6 to 3.0 Ohm,...
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EPWM ISR taking to long in F280049C
A problem has been boggling me for a couple of days, for which I need your help. I use SYSGONFIG Tool to initialize and program my ePWMs for a 3-phase DAB converter. I have enabled an extra epwm7A on ...
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How do I get access to a Pure-Path console app for a Texas Instruments TAS5754M audio chip? TI makes it impossible to find an answer
I am in the process of repairing a bi-amped speaker with a TAS5754M amplifier in it. I can communicate with the chip over I2S and the signal flow is also working.
The only thing that is left to fix is ...
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Which SUBCKT to use (TI ADS9110) Orcad PSPICE
I am new to this simulation, and try to simulate the ADS9110 (TI ADC) using Orcad 17.4.
The TI has the PSPICE Model here: https://www.ti.com/product/ADS9110?keyMatch=ADS9110&tisearch=search-...
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How to set up MCP430 Pins for SBW?
Hello I'm a senior in college and I'm trying to develop a development board for the MSP430G2533IN20 Microcontroller, this is my first time working with TI MCU's, but I've worked with STM32 before.
I'm ...
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MSP 430G2553 Keypad Error
I am trying to use 4x3 Keypad with MSP430G2553.
I used code from electronicwings site
...
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Texas Instrument OPA192
I'm examining the datasheet of the OPA192. When the inverting input of op amp tied up the op amp output and if the non-inverting input of op amp had been floating, what would have happened the op amp ...
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Issue with liquid level sensing circuit with LDC0851 chip
I came across a video where TI demonstrates liquid level sensing via an inductive switch. I am trying to recreate this and understand the circuit they made. A forum provided this schematic:
Below I ...
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Where can I find Texas Instruments article for basic building componets? [closed]
I was searching web for some good reading material and I found this article by Texas Instruments.
Now I'm wondering where i can find TI archive for this kind of stuff?
Subject of article is not ...
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LMX2820 readback operation [duplicate]
How can a readback operation be done on LMX2820?
I've looked through over it's datasheet, register map and AN documents and there is no information about that. In LMX2594 read and write operations are ...
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Bad voltage output using the TI supplied TPS2557 TINA-TI to PSpice Conversion in LTSpice
I pulled the converted PSpice file for the TI TPS2557 Power Switch directly from the TI website. Copied the contents into LTSpice and created a symbol using the LTSpice auto symbol creator. Verified X ...
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Pad-to-Resistor trace too long in datasheet layout example (TLV803E)?
I'm layouting a board that includes the TLV803EF26DBZR voltage supervisor (or reset IC) chip.
In the datasheet, it is suggested that the IC is layouted in the following manner:
However, I wonder if ...
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How are I3_min and I3_max currents considered in design for discrete 4-20mA current transmitter?
How to consider Iout_min and Iout_max currents before fixing up the R1, R2, R3 and R4?
The document by TI for 4-20mA current loop using discrete components
For linear operation, the ratio of the ...
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OPA548 not generating correct output pulse
I have created a circuit for which I would like a rail to rail output of 0 - 15V, using an OPA548 with the driving waveform generated by a microcontroller DAC powered by 3.3V.
The datasheet for OPA548 ...
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Erratic SPI behavior between BeagleBone Black and ADS7883 ADC
Im trying to interface my Beaglebone Black with a TI ADS7883 SPI 12-bit ADC.
My hardware implementation is the same as this tutorial, except with a slightly different pinout from the BBB, namely:
<...
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What are the purpose of the extra diodes in this peak detector circuit (LM1815)?
This is the circuit diagram from the LM1815 datasheet. I understand everything in this circuit except for the two diodes that I have marked with red. They are in a peak-detector circuit, but all of ...
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CPLD Programming via Microcontroller
I am new to CPLD's and I have a CPLD connected to the microcontroller via JTAG. Xilinx has an application note (XAPP058) about programming but I could not understand very well. Steps that I understand:...
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