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Questions tagged [texas-instruments]

A manufacturer of semiconductors, both discrete and integrated circuits.

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Confused about layout guidelines for TPS63710 buck converter

The TPS63710 is a low noise inverting buck converter capable of a relatively high efficiency conversion from 5V to -3.3V (according to TI's WEBENCH tool), but an aspect of the datasheet's layout ...
AJ-D2's user avatar
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1 vote
1 answer
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DRV8835 two channels in parallel in IN/IN mode

I'm using a Texas Instruments DRV8835 dual H-bridge IC. This has two output channels, where each channel is an H-bridge (push-pull driver pair). To use two channels in parallel for higher current ...
drykov's user avatar
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Buck-Boost fault mode on startup and gradual current decrease

I am using the TPS92692 in buck-boost mode with an analog signal to set Iadj and PWM. When I start the circuit, it consistently goes into fault mode and the fault pin is periodically set low. However, ...
msch's user avatar
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Cannot get correct output in PSpice with the Buck Converter PSpice Transient Model from TI

I obtained the LM76005-Q1 transient model from the Texas Instrument website and imported it to PSpice. The website also provides a Design Calculator software, so I basically use it to determine other ...
Duc Anh Vu Trinh's user avatar
1 vote
1 answer
57 views

Why is the BQ25895 default system voltage 3.5V not 3.3V?

Why is the default system voltage 3.5V, not 3.3V even though, for example, the STM32 maximum voltage is 3.6V, but nominal is 3.3V? BQ25895 datasheet.
Oleksandr Valentirov's user avatar
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1 answer
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What is the IC marked as 858Z TI 31JP7J3 (can see the photo attached)?

Can anyone help me with this ic code written on the smd component
Meet's user avatar
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How to simulate ADS131 ADC ic, its simulator model is not available anywhere. Is there any software(proteus/altium/kicad) on which i can simulate it?

I want to simulate this ADS131 IC as a part of bigger circuit but I'm not able to find this IC's simulator model in the proteus than how to do simulation?
Meet's user avatar
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NE555 Trigger Voltage

I'm looking to use an NE555 in monostable mode, generating a pulse of defined length whenever the trigger level drops to a low state. I was planning on powering the NE555 from the same source as my ...
Jacob Shaw's user avatar
3 votes
2 answers
1k views

Best way to drive multiple LED strips at distinct times with one LED driver

Application: 6 LED strips: each strip has LEDs connected in series Driver is TPS92691 (CC LED driver) The source is a battery The LED strips will be flashed in a carefully controlled cycle, starting ...
roaibrain's user avatar
  • 407
2 votes
1 answer
65 views

Bias Voltage affecting op-amp at 0v

This question is a follow-up from the setup described here Recap: I am designing a circuit which is intended to map a signal in the 0-5V range to the 1.75-7.0V range. To do this I am using an LM317T ...
Jayson Okhman's user avatar
3 votes
3 answers
118 views

Selecting appropriate Opamp for RRO applications

I am designing a circuit which is intended to map a signal in the 0-5V range to the 1.75-7.0V range. To do this I am using an LM317T voltage regulator in conjunction with a TLC2272 Rail-to-Rail opamp. ...
Jayson Okhman's user avatar
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2 answers
63 views

STM32F446 MCU SPI Problem with CC1120 Device

I'm currently working on a custom PCB with cc1120 datsheet as transceiver and stm32f446RET6 as MCU. I integrate the cc1120 library from IT's library. The device uses SPI as serial communication. Here ...
Burak Kayaalp's user avatar
2 votes
1 answer
117 views

OPA656 Simulation works on TINA but not on LTspice

As mentioned in the title I use LTspice as my main workflow to simulate circuits. One of my circuits is using an OPA656 amplifier. I attach a picture of a simple schematic I made to test the issue. It ...
Victor's user avatar
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TM4C123 SPI slave reads only one byte

I'm sending the following sequence to an SPI slave in a Tiva TM4C123GXL board: I have captured this directly from the MCU pins. Notice SCK is running at ~190 kHz (pretty slow). The problem is that my ...
Dan's user avatar
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1 answer
208 views

C2000 PWM skips a compare on synchronization

I found a mitigation for the problem that I couldn't post to e2e.ti.com because they demand a company email (University won't do). See my self-answer below. I'm using a TI microcontroller ...
ThoseWhoWish2B's user avatar
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1 answer
86 views

Switching power supply has high ripple voltage no matter how many capacitors are added

I'm designing a board that uses a Texas Instruments TLV62569DBVR (datasheet here) to convert 5V input from a USB power supply to 3.3 volts to be used to power an ESP32-WROOM-32D-N4. I am having lots ...
Firewolf's user avatar
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1 answer
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Is TI lying or over selling their solar charging ICs? [closed]

I came across the BQ25703A IC on TI's webiste. It clearly shows Solar input/MPPT. However, there is no mention of this in their datasheet. So am I missing something or is TI lying and overselling this ...
JoeyB's user avatar
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2 votes
1 answer
59 views

ADS7830 ADC unable to provide meaningful values with 3.3 V external reference

I made a board to read some analog values using an ADS7830 ADC. I wish to use a 3.3 V source as external reference voltage. The schematic and layout are shown below (R6, R7, R14, C4, C5, and C6 ...
Eric Jin's user avatar
1 vote
1 answer
60 views

TPS564247 switching voltage regulator problem

I have been working on a 12 V to 3.3 V DCDC converter that uses the TPS564247 switching regulator IC. Here is the schematic: The problem is that the IC keeps resetting itself once a second. At first, ...
Saláta Szalonna's user avatar
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0 answers
36 views

Can't find ethernet packets sent by TMS570LS1227 microcontroller

SOLVED: there was a setting in HALCoGen that enabled loopback mode. I am stupid. I am attempting to send a small packet over the ethernet port on a TMS570LS1227 using a TI-provided function I'll show ...
hobbes274's user avatar
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0 answers
16 views

Can't configure ADC using CCS THEIA -sys-config

Using a Ti MCU-MSPM0G1505. Using sys-config tool provided by Ti in CCS Theia .Trying to set ADC channel on pin 25.But not getting the option to set ADC on pin 25.Have attached the picture .Would any ...
funtastic rdj's user avatar
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0 answers
59 views

3.3V to 5V driver (push-pull) output too low

I was recently testing using SN74LVC1G17DCKR and was having trouble getting the output voltage to reach close to Vcc as per the datasheet. Vcc input is 5 V. My input was 3.27 V and I was getting ...
Krishnadas R's user avatar
1 vote
2 answers
67 views

LM431 shunt regulator

I'm trying to figure out how to set R1 + R2 on the LM431 shunt regulator. I have input V+ that I can't change at 9 V and I want Vout at 5 V. What value of resistors should I use for that? How does the ...
Simplifier's user avatar
2 votes
1 answer
50 views

LTspice - using an encrypted file

Is there a way to use a TI encrypted file in LTspice, specifically the TI PN TPSM63610?
Eaglesea's user avatar
2 votes
1 answer
34 views

What is the difference between the DAC8562 and DAC8562T chips from Texas Instruments?

These two callouts have distinct product pages (https://www.ti.com/product/DAC8562?dcmp=dsproject&hqs=pf and https://www.ti.com/product/DAC8562T?dcmp=dsproject&hqs=pf) and distinct data sheets....
BradP's user avatar
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0 votes
2 answers
141 views

TFP401PZP: Unable to get proper video output, ghost screen/distorted pixels

I have designed my own display driver board using a TI TFP401PZP TMDS DVI receiver/deserializer which is connected to a 24-bit, parallel RGB, 7 inch capacitive touch display with a resolution of ...
Aryan's user avatar
  • 21
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0 answers
51 views

TINA-TI - trouble with Digital-to-Analog Converter DAC161P997 Self-Powered Transmitter

I'm dealing with the DAC161P997 simulation on TINA-TI. Using the model from TI, the circuit appears to function correctly only if I leave out the capacitors on the pin. Here's the setup – Data ...
Morena Fabozzi's user avatar
3 votes
5 answers
696 views

What does (DW) mean in the TI equivalent of SOIC (16) package?

TI datasheet says: SOIC-16 Wide Body (DW) and Extra-Wide Body (DWW) Package Options It doesn't mention what DW stands for. I am annoyed when manufacturers come up with their own naming conventions ...
Dynamic_equilibrium's user avatar
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25 views

BMS using BQ28Z620 (2s)

I am having a bit of trouble with understanding the provided implementation from the datasheet. I don't understand why the serial resistor connected to VC2/Pin11 is only 5R and has no 0.1uF decoupling ...
Robin Y's user avatar
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1 vote
1 answer
58 views

Is it possible to slow down the rise time when using the DRV8412 for PWM?

I am using a DRV8412 to drive a 36 V DC motor with 100 kHz PWM. I see a radiation issue due to sharp 100 kHz PWM to the motor. When I probe the motor current, I see current ringing at each transition ...
NICEGUY NICEGUY's user avatar
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0 answers
89 views

TINA-TI - trouble with boost converter based on LM5002

I wanted to recreate the LM5002 circuit in the TINA-TI program, which I encountered for the first time today. I was inspired by the circuit from the link below: LM5002 Unfortunately, the effects of ...
Proboszcz's user avatar
1 vote
0 answers
98 views

LM27762 voltage regulator LTspice simulation error

LM27762 datasheet I imported the latest model from the Design tools & simulation for the component. I used the following layout from the datasheet as reference, capacitor values as defined in ...
AuFries's user avatar
  • 113
-1 votes
1 answer
93 views

Problems with buck converter

I designed a PCB with two LM61495 buck converters. They should produce a 3V3 and 5V output. However, for both circuits, the output is 12V. The picture below shows the output of one of the channels ...
mlx11's user avatar
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0 answers
56 views

Reading TCS34725 with MSP430G2553

I'm trying to read the red color data from the TCS34725 color sensor that is attached to this board by Grove (https://www.seeedstudio.com/Grove-I2C-Color-Sensor-V2.html) by combining its low value and ...
JAladwan1's user avatar
0 votes
1 answer
203 views

CJTAG Bit Banging - Just Erase the Flash

As in another question, I have a CC2652 which is locked in cJTAG mode. I would like to completely erase the flash memory so that the bootloader is re-enabled, but I don't have a JTAG or cJTAG ...
bobuhito's user avatar
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0 answers
47 views

What modes are supported by ADS1299 for powerline noise reduction, and where to connect them?

I am using this ADS1299 Frontend Board with a Rp2040 Pico, my SPI connections and lib work fine, but I am facing problems in understanding how to use a refference electrode, I am getting good signals ...
Ashfaque Khan's user avatar
1 vote
1 answer
31 views

Input common-mode range vs output voltage (INA826) interpretation

I'm starting a new design using INA826 and analyzing the input common mode limitation, I do not understand the differences between this curves; I mean, why in figures 11 and 12, gain and VS is not ...
Facundo Piñero's user avatar
4 votes
1 answer
111 views

INA114 vs INA826: why is the INA114 so expensive?

I have been using the INA114 in my design, but wondering if I can use the INA826 instead. I cannot figure out what the difference between these two instrumentation amplifiers is. The CMRR is nearly ...
Dillon Stewart's user avatar
2 votes
1 answer
75 views

SPICE Error in LM5117 Model in Microcap-12

I am trying to simulate SNVA829 (constant current constant voltage) schematic given in the application report from TI. I downloaded the spice model from TI site and imported it to microcap. When I ...
nmr's user avatar
  • 133
0 votes
0 answers
78 views

TI synchronous buck converter went up in smoke, where do i start?

I’m using a TPSM63606RDLR power module device. Everything looked perfect for multiple days, but yesterday it started smoking. I did move the PCB and there are some LED strips connected externally to ...
Bibber's user avatar
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1 vote
0 answers
142 views

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 ...
AlectronicZ's user avatar
1 vote
1 answer
39 views

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 ...
nmr's user avatar
  • 133
1 vote
1 answer
77 views

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 ...
Befitting Display Name's user avatar
0 votes
0 answers
55 views

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 ...
Boolean's user avatar
  • 111
3 votes
2 answers
365 views

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 ...
Jonathan_the_seagull's user avatar
0 votes
1 answer
59 views

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 ...
Jonathan_the_seagull's user avatar
1 vote
1 answer
84 views

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 ...
RP07's user avatar
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1 vote
1 answer
100 views

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 ...
SlickDaDDy's user avatar
1 vote
3 answers
116 views

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 ...
Balaji Narasimhan's user avatar
0 votes
0 answers
29 views

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 ...
Luis 's user avatar

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