Part Number: TPA3221
Hello sir,
May I ask a question regarding to TPA3221:
Whether pin 4 and 10 can be connected as attached picture?
Many thanks!
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TPA3221: Asking some questions about TPA3221
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BQ25708: Buck Only Design
Part Number: BQ25708
Hi,
I am looking to use the bq25708 for a lead-acid (12V) battery. My input voltage is 24V so I will not need the boost functionality that this device also provides.
Is it possible to not place FETs for the boost stage and still have this device work?
Image may be NSFW.
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The other option would be to look at the bq24780S but the adapter detect and auto system power selection is un-needed.
Thank you,
Reed
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CC3220SF: CC3220sf wifi door lock- Adding new wifi profile
Part Number: CC3220SF
Hello,
I'm working on cc3220sf launch pad.i am building my application on wifi door lock reference tidc -01005.
Right now I'm working on provisioning tasks.
In the beginning when there is no wifi profile ..using the wifi start up pro I'm AP provisioning it a new AP. once the profile is added it will be stored in serial flash and after that every time the device restarts it will automatically provisioned to the stored profile.
1)My question is what if i need to provision to a new AP?how can it go to the AP mode again?
2) Can i delete or erase the old profile using software without factory reset?
Regards,
Sanath Rai
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BQ34110: State of Health
Part Number: BQ34110
I need a clarification on SOH
Per TRM:
StateofHealth(): 0x2E/0x2F
This command returns the state-of-health (SOH) information of the battery. StateOfHealth() is calculated
as a percentage of FullChargeCapacity() relative to Design Capacity. It is a read-only command.
Byte 0: LSB of SOH in capacity
Byte 1: MSB of SOH in capacity
Byte 2: LSB of SOH in energy
Byte 3: MSB of SOH in energy
If I understood it right, the command returns two bytes (0x2E/0x2F) but the description indicates four. What am I missing?
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LM5175: After varying the input voltage from 10 to 32VDC and vice versa, the behavior of the PWM in SW1 and SW2 changes
Part Number: LM5175
We are using the LM5175 as a DC/DC converter in trucks. The input voltage can be 12VDC or 24VDC and the output voltage is 15VDC. Both input voltages, 12VDC and 24VDC can vary, where 12VDC can vary from 10.5VDC to 14.8VDC and 24VDC from 21VDC to 30VDC
In our last lot of Power Supply Boards, we had two issues in field, where the LM5175 died in trucks with 24V.
In the lab, we are experiencing a strange behavior of the mosfets switching signals, after varying the input supply from 10VDC to 30VDC and vice versa a couple times, the behavior of the switching signals SW1 and SW2 changes.
Initially, under 13VDC only SW2 is switching, from ~14VDC to ~19VDC, both SW1 and SW2 are switching, and over 20VDC, only SW1 is switching. In this process, the inductor makes some noise near 19VDC and then stops, after 20VDC
After varying the input a couple times, the behavior changes to:
Under 13VDC, only SW2 is switching (image1), close to 14VDC, SW2 start to switch with SW1 (image2), until 19VDC, the waveforms of SW1 and SW2 are very distinguished from one another. Between 19VDC and 21VDC the switching waveform start to overlap in some points, and we can see noise in the SW2 (image3), and we can hear a lot of noise from the inductor. The switching stabilized from 22VDC to 26VDC, but both SW1 and SW2 are switching (image4), and above 28VDC there are noise in both signals (image5), and the inductor start to emit noise again.
The load in the 15VDC output is a resistor of 10ohms.
Can you help to solve this issue?
Below are the images from SW1 (orange) and SW2 (blue) and the Schematics.
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Image 1
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Image 2
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Image 3
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Image 4
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Image 5
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Schematic of the DC/DC Converter
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TLV320ADC3100: AOSR and ADC Digital Filter Engine Decimation
Part Number: TLV320ADC3100
Hi Team,
We are quite new to this device and we need some clarifications regarding the Register 22 (ADC Digital Filter Engine Decimation). My understanding was that the digital decimation was set by AOSR (the oversampling ratio). How is this register different from that? Is it mainly for the CIC conditions?
Thanks in advance for your help.
Kind Regards,
Jejomar
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UCC28019A: Burning MOSFET and Diode by using UCC28109 for 1000W PFC flyback referring to PMP2552
Part Number: UCC28019A
Hello sir,
One of my customer is using UCC28019 to design 1000W PFC Flyback. The schematic is shown as the attachment.
The customer is refer to PMP2552 TIDA. The input is 220VAC and the output is 330VDC. Now, the customer just adds 300W loads for 10mins. After that, the MOSFET Q201 and output Diode D204 is very hot. if 1000W loads are added for 3Mins, both MOSFET Q201 and Diode D204 will be burned.
I've let my customer try to change the resistor (R216) before gate of MOSFET (Q201) from 47Ohms to 4.7Ohms, however the heat is still very high. And both 20A/600V MOSFET or 68A/600V MOSFET is tried, but the result doesn't change a lot.
D204 is a diode with 3pin TO-220 package，BYC20X-600 is used with paramestics: VRRM=600V，VF=1.54V，IF(AV)=20A，trr=19ns. In the beginning SiC switch is also tried (SCS112AM VRM=600V，VF=1.5V，IF(AV)=12A，tc=16ns)，the heat performance is better. But now 300W loads (0.9A/330V)，the current is not very large. (Please visit the site to view this file)
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AWR1843BOOST: Start up Info
Part Number: AWR1843BOOST
Hallo TI,
Our aim is to detect a robotic arm, which is less than 2 meters away (object detection and recognition), and direct it to go to particular position (moves very slowly less than 1 or 2 meters/sec)?
We would like to avoid recreating the entire software again since we are on a tight schedule. Instead we thought to use one of the already developed demos in the automotiv toolbox or Industrial toolbox. Currently we are using ODS_DEMO example on the AWR1843BOOST board and we can see the objects in the ods_demo GUI. But we read that the angle information is not correct when this demo is run on AWR1843BOOST board. And we are bined to use this board (for now).
Could you please suggest Which demo would be the best match for our case?
Thank you in advance.
Best regards,
Venkatesh.
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TPS2660: surge and burst test
Part Number: TPS2660
Hello team,
I am looking for devices that protect boards operating in an industrial environment (19Vdc: 29Vdc) from under voltage and over voltage. I noticed TPS2660x and TPS2662x. The boards where these will be used need to comply with Surge and Burst tests IEC 61000-4-5 and IEC61000-4-4; between the two devices it seems that only the TPS2662x is able to pass both, is it true?
In case you know of any other device, could you please let me know?
Thank you in advance for the support.
Best regards,
Adrian
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TMDSCNCD28388D: Error in bgcrc.h file
Part Number: TMDSCNCD28388D
Hello All
I have met error in the f2838x/driverlib/bgcrc.h file. It is neccessary to change lines
#ifdef __cplusplus
static inline "C"
{
#endif
to
#ifdef __cplusplus
extern "C"
{
#endif
C2000Ware_v2.00.00.03 version.
Best regards
Andrii
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MSP432P401R: XDS debug probe adapter replacement
Part Number: MSP432P401R
Hello,
I am working on a custom board and havee been using the XDS110 Debug probe. We are using a the 10-pin setup and have been using the 20 to 10 pin converter that came with the XDS110.
Unfortunately the adapter has become broken, and we are searching for a replacement. I have already seen the replacements sold by 3rd parties such as blackhawk-dsp.com but I wanted to know if this part will work for what we need:
https://www.mouser.com/ProductDetail/Olimex-Ltd/ARM-JTAG-20-10?qs=DUTFWDROaMbVQp3WoAdijQ%3D%3D&gclid=EAIaIQobChMIve753LGX5gIVv__jBx38wwXcEAkYASABEgLxXfD_BwE
Thank you,
Marcus
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TMS570LS0432: Voltage Supervisor
Part Number: TMS570LS0432
Hi Champs,
the built in voltage supervisor has a max. threshold of 2.1V for Vcc while the Vcc abs max rating is 1.43V.
Can you comment why we have this? Customers use external monitors but in case this fails will then be the internal one be of any use?
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WEBENCH® Tools/TPS54361: TPS54361-Q1
Part Number: TPS54361
Tool/software: WEBENCH® Design Tools
Im looking for the work bench simulation carried out on this device
How do i find it on E2E
Cheers
Colin
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CCS/CC3120: Cannot connect to some TLS servers - error -450 ("error secure level general error")
Part Number: CC3120
Tool/software: Code Composer Studio
I'm implementing a HTTPS client (MSP432 + CC3120).
I'm using (pseudo code):
- sl_Socket (SL_AF_INET, SL_SOCK_STREAM, SL_SEC_SOCKET)
- sl_SetSockOpt(Socket, SL_SOL_SOCKET, SL_SO_SECURE_DISABLE_CERTIFICATE_STORE,&dummyVal,sizeof(dummyVal));
- sl_SetSockOpt(pSockInfo->SocketDesc, SL_SOL_SOCKET, SL_SO_NONBLOCKING, &nonBlocking, sizeof(nonBlocking));
- sl_Connect
and I get error -450 - on another server, I do manage to connect.
What can be the reason?
I have tried setting a cipher & method, but without success
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DRV2604: Are there any Linux companion programs that upload wave-forms and trigger from the internal memory and can I have some sample LRA wave forms to evaluate the performance of the LRA driver in its enclosure?
Part Number: DRV2604
Hi Motor Drive team,
Posting this Q on behalf of my customer.
We are using a TI DRV2604 connected to a 3.3V rated LRA motor for use in a small handheld product. This part was chosen as the UX team would like to have full control over the haptic behavior using custom wave-forms.
The driver is connected via I2C and has both EN and IN/TRIG connected to standard SoC GPIOs. Our preferred mode is to trigger pre-uploaded wave-forms which are set at system initialization.
- We have integrated the TI mainline driver and calibration works correctly. In reviewing the source code, it appears that this driver is primarily for operation in LRA_NO_CAL mode. Are there any Linux companion programs that upload wave-forms and trigger from the internal memory.
- Could TI provide some sample LRA wave forms to evaluate the performance of the LRA driver in its enclosure. Some sample clicks and rumbles of various intensity would be sufficient.
Thanks,
Lauren
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LM139A: Output transistor surge current.
Part Number: LM139A
I see that for this component the maximum continuous output current is 20 mA.
In my design I have a zener diode regulating the output voltage of the device to 12V. Upon switching off, the zener diode discharges causing a 50 mA surge current through the output transistor of this device (transistor shown below).
Could this surge cause any harm to the component?
Any assistance is much appreciated!!
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SN75DP159: SN75DP159: SCL_SNK, SDA_SNK, HPD_SNK pin ESD protection?
Part Number: SN75DP159
Hi team,
as title, does SN75DP159 has ESD protection on these pin? SCL_SNK, SDA_SNK, HPD_SNK since these pin will be connected to the HDMI receptacle straightforward. If not, do we have to add external ESD protection?
please check on pin 28 32 33, I refer from SN75DP159 datasheet Figure 30.
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DRV2667EVM-CT: DRV2667EVM: How to configure a customized waveform and start the pattern repeatly on Haptive Control Console?
Part Number: DRV2667EVM-CT
Hi team,
As title, we are able to configure a customized waveform and add into a specific sequence.
But how are we going to make this waveform to start repeatly ? And how to generate the waveform Hex file.
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BQ27750: I2C low level voltage cannot reach 0V
Part Number: BQ27750
Hi TI engineer,
I have a problem with the I2C communication. When our MCU communicates with other I2C device, the waveform is OK, but when it comes to BQ27750, low level cannot reach 0V
In the picture it is 0.65V. By the way, the pull-up is 1.8K.. Could you please suggest any solutions?Image may be NSFW.
Clik here to view.
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TPL5010: How can I align the TPL5010 timing to system timing
Part Number: TPL5010
I have a number of posts on this forum but non seemed to address my issue directly please forgive me if I missed the answer.
I have a device that naps between sensor interrupts and wakes every hope at the top of the hour to report. The process of napping / waking and reporting is already implemented. I have the TPL5010 with a 1 hour 5 minute interval to reset the device if it does not report as the watchdog is "pet" during the reporting process.
Configuration:
- Wake - from the TPL5010 goes to a GPIO pin on the microcontroller with a RISING interrupt
- Done - from the microcontroller to the TPL5010
- Reset - from the TPL5010 to the device's reset pin
- Two 270k resistors in parallel set an interval of just over 1 hour
Image may be NSFW.
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This solution requires some alignment of the watchdog interval to the hourly wake cycle. If both are aligned, the device wakes at the top of the hour, pets the watchdog and goes to sleep. The watchdog gets petted during the interval and therefore never needs to send a reset to the device. If, however, the TPL5010 is not aligned to this interval, it will send WAKE signals during the hour and will cause the device to come out of napping state unnecessarily.
Can I set the timing of the TPL5010's interval to align to the hourly schedule? I had assumed that when I pet the watchdog, it would reset the next interval but apparently this is not the case.
Thanks,
Chip
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