Part Number:TLV62090
Hello,
Could you please let me know the min/max switching frequency at heavy load?
According to the datasheet figure 3~6 , is the fsw(min) about 1.1MHz and fsw(max) about 1.5MHz?
Best Regards,
Ryuji
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TLV62090: min/max switching frequency
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CC2650: How to create border gateway
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AWR1243: How to continuous trigger frames
Part Number:AWR1243
Hi,
I'm able to capture data from HSDCPro with Radar Studio by clicking "TSW1400 ARM" and "Trigger Frame". However, when I need to get the data next time, I need to click those two buttons again. Is there a way to continuous trigger the frame without clicking the button?
I'm able to continuous taking the data from TSW1400 using Matlab function "calllib('HSDCProAutomation_64Bit','Get_FFT_Data',TimeoutInMs, f0, df, ActiveChannelFFT, FFTArrayLength)" but I can not trigger the frame from Matlab. Any solution?
Thanks.
Best Regards
Min Liang
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BQ24171: Why does not bq24171 execute battery detection routine when it's power up without a battery?
Part Number:BQ24171
I plan to design a battery charger by using bq24171 but found one wired sympton as below.
When bq24171 is applied power (7.5VDC) without a battery, it did not execute battery detection routine as datasheet 9.3.15.
Instead there was a small leakage voltage (0.8V) on VBAT. Could you tell me the reason why?
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LM5030: Floating VIN pin and Connecting 12V input directly to VCC pin.
Part Number:LM5030
Hi,
We are designing a 100 Watt Push-Pull converter using LM5030. The input to the system is a 12Volt DC supply.
1.Recommended operating range of VCC and the ability to float VIN pin
Is it possible to connect 12V directly to the VCC pin of LM5030? At the same time by making the VIN pin of LM5030 to float.
2.Supply current limit of VCC and Power dissipation of LM5030
The maximum current limit for the VCC of LM5030 is listed as typically 17mA.
If VCC is powered with 12V then the power dissipation of LM5030 is given by (12-7.7)*0.017 = 73mWatt.
Does the above calculation is correct?
Thanks and regards
DEEPAK V
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DP83867IS: 10/100/1000 Ethernet Phy chip speed 10M operation
Part Number:DP83867IS
Hi,
Currently, when using auto-negotiation, it is linked with 10Base-T (advertise) equipment, but it is a problem in packet transmission.
TX normally goes out, but RX seems to be broken.
The DP83867IS states that it supports 10Base-Te, not 10Base-T.
It is related to EEE, so it seems that we need to set up something extra to communicate with devices that only support 10Base-T.
Looking at below link, the voltage level seems to be low.
https://e2e.ti.com/support/interface/ethernet/f/903/t/501970
In the document below
10BaseT will transmit with 10BaseT
10Base-Te seems to be transmitting with 10Base-Te.
I suspect that maybe 10Base-Te's RX does not recognize 10Base-T properly.
Can you check it out?
thanks,
TS
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BOOSTXL-CC2650MA: Enabling OAD in spp_ble_server example project
Part Number:BOOSTXL-CC2650MA
Hi,
I have spp_ble_server project in which I want to enable OAD. (off Chip).
I have followed all the steps required for this by following the OAD developers guide.
But after enabling OAD spp_ble_server is not advertising but if FEATURE_OAD is disabled advertising happens.
What can be the issue?
stack : 2.2.1
IAR platform
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BQ25120: BQ25120
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INA220: Shunt Voltage Consistently Reading High
Part Number:INA220
Hi,
My customer is getting current and power readings that are off. Below are details, can you provide some insight?
We are using TI’s INA220 I2C voltage/current/power monitor on a design. We are using multiple INA220s on the board: two for 12V buses, and one for a 24V bus. I am getting correct bus voltage readings from all the INA220s. However, the current and power readings are off. Initially, I assumed I must have the math wrong for setting up the calibration register. However, when I read the shunt voltage (which is independent of the calibration register), it is also off by the same proportion as the current/power.
For the all of our boards that I’ve tested, the 12 buses are all reading approximately 18% high for the shunt voltage. For all boards tested, the 24V buses are reading approximately 11% high for the shunt voltage. All the buses (12V and 24V) are using a .002 Ohm +/- 1% shunt resistor. The only differences are the bus voltage and the corresponding programming of the BRNG bit in the Configuration Register.
Is there an errata for the INA220 related to this? Are there any other variables we can control (or mis-control as the case may be) that can affect the accuracy of the shunt voltage reading?
Thanks,
Chuchen
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TMS320F28379D: T-Format Library functions CPU cycles
Part Number:TMS320F28379D
Hi Champion
My customer evaluated T-format, and have a question as below：
The User Guide said PM_fformat_receiveData need 500 CPU cycles, but when we debug in the CCS, it will take 2000+ CPU cycles. We also use oscilloscope to measure the execution time, it's about 11us (CPU @ 200Mhz Freq).
Other functions all looks good except PM_fformat_receiveData, is there anything wrong?
Thanks a lot.
BR,
Sam
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Linux/AM5728: Core isolation methods
Part Number:AM5728
Tool/software: Linux
Dear Champs,
My customer is trying to test core-isolation using shield as described in Linux-RT performance guide, but failed.
Could you please let me know if there is a other method to isolate each core?
How about cset described in below?
http://skebanga.blogspot.kr/2012/06/cset-shield-easily-configure-cpusets.html
root@am57xx-evm:~# cset shield --kthread=on --cpu 1
root@am57xx-evm:~# cset shield --exec cyclictest -- -l100000 -m -n -a0 -t1 -p99 -i200 -h400 -q
Thanks and Best Regards,
SI.
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Linux/DRA750: DRA750 can't find SDCARD with MMC1 @-40 Deg C
Part Number:DRA750
Tool/software: Linux
Hi
We have change BSP from “Linux version 3.14.63” to “Linux version 4.4.45”.
The CPU can't find SDCARD with MMC1 with “Linux version 4.4.45” at -40 Deg C but the previous version “Linux version 3.14.63” doesn't occur.
The error log as below.
U-Boot SPL 2016.05 (Sep 20 2017 - 14:25:06)
DRA752-GP ES2.0
** First descriptor is NOT a primary desc on 1:1 **
*** Warning - bad CRC, using default environment
Trying to boot from SPI
GUID Partition Table Header signature is wrong: 0x0 != 0x5452415020494645
part_get_info_efi: *** ERROR: Invalid GPT ***
GUID Partition Table Header signature is wrong: 0x0 != 0x5452415020494645
part_get_info_efi: *** ERROR: Invalid Backup GPT ***
cannot find partition: 'environment'
U-Boot 2016.05 (Sep 20 2017 - 14:25:06 +0800)
CPU : DRA752-GP ES2.0
Model: TI DRA742
Board: DRA74x EVM REV
DRAM: 256 MiB
NAND: 256 MiB
MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
** First descriptor is NOT a primary desc on 1:1 **
*** Warning - bad CRC, using default environment
Warning: fastboot.board_rev: unknown board revision
GUID Partition Table Header signature is wrong: 0x0 != 0x5452415020494645
part_get_info_efi: *** ERROR: Invalid GPT ***
GUID Partition Table Header signature is wrong: 0x0 != 0x5452415020494645
part_get_info_efi: *** ERROR: Invalid Backup GPT ***
ERROR: cannot find partition: 'userdata'
at arch/arm/cpu/armv7/omap-common/utils.c:195/mmc_get_part_size()
Warning: fastboot.userdata_size: unable to calc
SCSI: SATA link 0 timeout.
AHCI 0001.0300 32 slots 1 ports 3 Gbps 0x1 impl SATA mode
flags: 64bit ncq stag pm led clo only pmp pio slum part ccc apst
scanning bus for devices...
Found 0 device(s).
Net:
Warning: ethernet@48484000 using MAC address from ROM
eth0: ethernet@48484000
@ADAPTER@
Hit any key to stop autoboot: 0
** First descriptor is NOT a primary desc on 1:1 **
switch to partitions #0, OK
mmc1(part 0) is current device
** First descriptor is NOT a primary desc on 1:1 **
eMMC found on device 1
** No partition table - mmc 1 **
** First descriptor is NOT a primary desc on 1:1 **
switch to partitions #0, OK
mmc1(part 0) is current device
** First descriptor is NOT a primary desc on 1:1 **
mmc - MMC sub system
Usage:
mmc info - display info of the current MMC device
mmc read addr blk# cnt
mmc write addr blk# cnt
mmc erase blk# cnt
mmc rescan
mmc part - lists available partition on current mmc device
mmc dev [dev] [part] - show or set current mmc device [partition]
mmc list - lists available devices
mmc hwpartition [args...] - does hardware partitioning
arguments (sizes in 512-byte blocks):
[user [enh start cnt] [wrrel {on|off}]] - sets user data area attributes
[gp1|gp2|gp3|gp4 cnt [enh] [wrrel {on|off}]] - general purpose partition
[check|set|complete] - mode, complete set partitioning completed
WARNING: Partitioning is a write-once setting once it is set to complete.
Power cycling is required to initialize partitions after set to complete.
mmc bootbus dev boot_bus_width reset_boot_bus_width boot_mode
- Set the BOOT_BUS_WIDTH field of the specified device
mmc bootpart-resize <dev> <boot part size MB> <RPMB part size MB>
- Change sizes of boot and RPMB partitions of specified device
mmc partconf dev boot_ack boot_partition partition_access
- Change the bits of the PARTITION_CONFIG field of the specified device
mmc rst-function dev value
- Change the RST_n_FUNCTION field of the specified device
WARNING: This is a write-once field and 0 / 1 / 2 are the only valid values.
mmc setdsr <value> - set DSR register value
We also measure the SHV8 IO voltage found the different between two versions.
The SHV8 has a glitch with new version “Linux version 4.4.45” but old version doesn't occur.
The glitch waveform as below.
Does this glitch will cause the issue?
Why the SVH8 has the difference between two versions?
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TMS320F28027: TMS320F28234PGFA TMS320F28027DAT
Part Number:TMS320F28027
Hi all,
My customer started to design new Power conditioner model.
Old model he used TMS320F28234PGFA and TMS320F28027DAT.
And for Vcc LDO is TPS75005 (NRND).
So he requested me new LDO P/N which C2000 team recommended.
Because he want to use one TMS320F28234PGFA and three TMS320F28027DATs. (Potenza 100p does not in time)
This LDO range, ROHM is cheaper.
So I want to recommend TLV73333PDBVR.
How about ?
Thank you,
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TPS62150: tps62150 an inverting power output
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PoE 802.3bt
Looking for a PSE controller which supports 802.3bt protocol. Does TI have manufactured any.? Details and suggestions are appreciated.
My email is mbk.king327@gmail.com
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Linux/TMS320DM8168: DM8168(AM389x)+Qt5+SGX530：EGL Error : Could not create the egl surface: error = 0x3001
Part Number:TMS320DM8168
Tool/software: Linux
1.DM8168(AM389x):
tool chain: arm-arago-linux-gnueabi
linux : Linux version 2.6.37+ (gcc version 4.5.3 20110311 (prerelease) (GCC) )
2.SGX530: Graphics_SDK_4_03_00_02
cross compile it and install the gsdk.
then run the gsdk demos on DM8168:
/opt/gfxsdkdemos/ogles2 # ./OGLES2Skybox2 Can't open keypad input device (/dev/input/event0) PVRShell: EGL 1.4 initialized Exit message has been set to: "PVRShell: Unable to create surface ". InitAPI failed! PVRShell: Unable to create surface
3. Qt5 : cross compile on DM8168, cp the Qt5 lib to DM8168
then,run the Qt5 QML demo ：
EGL Error : Could not create the egl surface: error = 0x3001 Aborted
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INA333: Power supply hookup device not functioning as normal
Part Number:INA333
Good evening I am a research student working on a project involving the INA333. This product will be wirelessly powered in an EEG application and we are attempting to get initial tests ran on the device to see its capabilities, but have yet to have a successful test run. The things we have done so far:
1. Soldered 2" long wires to each pin
2. Soldered 10k ohm resistor to R_g
3. PIN1: ---->10k res----> PIN8
4. PIN2: 1.5V
5. PIN3: Connected to signal generator with 100mV amplitude
6. PIN4: this is Vref... we have connected it to 1.5V and nothing with no difference in result
7. PIN5: Connected to GND
8. PIN6: Connected to Scope = Vout
9 PIN7: 3V
We have done the necessary changes and included the capacitors on the inputs but have had no change in the result. Our results are only showing a gain of around 2~3 rather than the expect 100x gain we should be seeing. Is there any obvious mistakes to what we are doing that is causing this issue? Thank you in advance for your time.
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CCS/TMS320F28377S: CCS/TMS320F28377S
Part Number:TMS320F28377S
Tool/software: Code Composer Studio
Hello.
I am using tms320f28377s chip.
I want to know what happens when power is shut off during flash ROM or RAM programming.
And is there any comments about this issue in the datasheet?
Additionally, is the DSP(tms320f28377s) reusable again in this case?
Thanks,
-Uiseok
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TMS320F28377S: Power failure during RAM or Flash ROM programming
Part Number:TMS320F28377S
Hello.
I am using tms320f28377s chip.
I want to know what happens when power is shut off during flash ROM or RAM programming.
In this case, is the DSP(tms320f28377s) available again?
Thanks,
-Uiseok
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TPS92692-Q1: Voltage range issue
Part Number:TPS92692-Q1
Hi,
I am planing to use the TPS92692 LED driver and was wondering about the possible input voltage range.
I would like to use the TPS92692 in Buck / Boost mode with an input voltage range of 9V up to 33V for an automotive application.
Our student put together a prototype PCB and it works up to exactly 18V. Above 18V the prototype flickers.
The documentation of the evaluation board states 7... 14... 18V and therefore I wonder what's going on. Our student says he used the provided design / calculation table and we both assumed the TPS92692 would work inside the 9V up to 33V range.
Do we miss here something? Any help / hint would be greatly appreciated.
Kindest regards,
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