Quantcast
Channel: Forums - Recent Threads
Viewing all 262198 articles
Browse latest View live

LED driver

$
0
0

Dear Team,

                     One of my customer need 150W Street light solution. Kindly help me to get the solution. Below is the specifications.

  LIMITSOBSERVATION
I/P parametersInput Voltage ( V)240V 
Input Power (W)150W+/-5% 
P.F.0.95 
THD  10% 
O/P ParametersOutput Power (W)127W+/-5% 
Output Voltage (V) 54V+/-3V 
Output Current (mA)2A+/-5% 
Driver Losses (W)<20W 
Driver Efficiency (%)85% 
Operation range of fixture140V - 300V
Over Voltage Protection290V - 310V
Open Ckt Voltage @ 240 V-
Output short circuit protection Required
Open Ckt. Protection ( w/o load for 15 Min)Required
Insulation resistance > 2 MΩ at 500VDCRequired
HV Test @ 1.5 KV for 1 Minute Required
Surge Voltage Protection & EFT Protection Required 6kV DM & 4kV CM
440V protection for 2 hours. Required
Isolation of LED Driver Required 3.75kV

Best regards,

Muthu


BQ28Z610: RSOC Relative State of Charge ever on 100%

$
0
0

Part Number:BQ28Z610

Hello,

we use the BQ28Z610 to protect our Lithium-Ion Battery-Pack. We have the Problem that the Relative State of Charge (RSOC) is ever on 100%. Attached you will find my srec file. Do you have an idea, what I must change to get the right RSOC? I started the learning cycle but the Update Status didn't change after  Battery was fully charged and after a relax time more than 2 hours. Is the learning cycle mandatory to get a RSOC less than 100%.

(Please visit the site to view this file)

am5728: CMEM issues

$
0
0

Part Number:am5728

I use ti-processor-sdk-linux-am57xx-evm-03.03.00.04 on am5728

And want to allocate buffers for capture video. My dts:

reserved-memory {
		#address-cells = <0x2>;
		#size-cells = <0x2>;
		ranges;

		ipu1_cma@9d000000 {
			compatible = "shared-dma-pool";
			reg = <0x0 0x9d000000 0x0 0x2000000>;
			reusable;
			status = "okay";
			linux,phandle = <0xb5>;
			phandle = <0xb5>;
		};

		ipu2_cma@95800000 {
			compatible = "shared-dma-pool";
			reg = <0x0 0x95800000 0x0 0x3800000>;
			reusable;
			status = "okay";
			linux,phandle = <0xba>;
			phandle = <0xba>;
		};

		dsp1_cma@99000000 {
			compatible = "shared-dma-pool";
			reg = <0x0 0x99000000 0x0 0x4000000>;
			reusable;
			status = "okay";
			linux,phandle = <0xc2>;
			phandle = <0xc2>;
		};

		dsp2_cma@9f000000 {
			compatible = "shared-dma-pool";
			reg = <0x0 0x9f000000 0x0 0x800000>;
			reusable;
			status = "okay";
			linux,phandle = <0x127>;
			phandle = <0x127>;
		};

		cmem_block_mem@a0000000 {
			reg = <0x0 0xa0000000 0x0 0xA000000>;
			no-map;
			status = "okay";
			linux,phandle = <0x131>;
			phandle = <0x131>;
		};
		                
		myblock: cmem_block_mem@aa000000 {
			reg = <0x0 0xaa000000 0x0 0x2000000>;
			no-map;
			status = "okay";
		};

		cmem_block_mem@40500000 {
			reg = <0x0 0x40500000 0x0 0x100000>;
			no-map;
			status = "okay";
			linux,phandle = <0x132>;
			phandle = <0x132>;
		};
	};


	cmem {
		compatible = "ti,cmem";
		#address-cells = <0x1>;
		#size-cells = <0x0>;
		#pool-size-cells = <0x2>;
		status = "okay";

		cmem_block@0 {
			reg = <0x0>;
			memory-region = <0x131>;
			cmem-buf-pools = <0x1 0x0 0xA000000>;
		};

		cmem_block@1 {
			reg = <0x1>;
			memory-region = <&myblock>;
			cmem-buf-pools =<0x6 0x0 0x96000>,<0x6 0x0 0x3f4800>;
		};

		cmem_block@2 {
			reg = <0x2>;
			memory-region = <0x132>;
		};
	};

CMEM loads fine

root@am57xx-evm:~# cat /proc/cmem 

Block 0: Pool 0: 1 bufs size 0xa000000 (0xa000000 requested)

Pool 0 busy bufs:

Pool 0 free bufs:
id 0: phys addr 0xa0000000

Block 1: Pool 0: 6 bufs size 0x96000 (0x96000 requested)

Pool 0 busy bufs:

Pool 0 free bufs:
id 0: phys addr 0xabf6a000
id 1: phys addr 0xabed4000
id 2: phys addr 0xabe3e000
id 3: phys addr 0xabda8000
id 4: phys addr 0xabd12000
id 5: phys addr 0xabc7c000

Block 1: Pool 1: 6 bufs size 0x3f5000 (0x3f4800 requested)

Pool 1 busy bufs:

Pool 1 free bufs:
id 0: phys addr 0xab887000
id 1: phys addr 0xab492000
id 2: phys addr 0xab09d000
id 3: phys addr 0xaaca8000
id 4: phys addr 0xaa8b3000
id 5: phys addr 0xaa4be000

But sample program not works:

    CMEM_AllocParams prms;
    prms.alignment = 0;
    prms.flags = CMEM_NONCACHED;
    prms.type = CMEM_POOL;
    CMEM_init();
    void* ptr = CMEM_alloc(640*480*2,&prms);

    printf("Got buffer %08X\n",ptr);
    CMEM_free(ptr,&prms);
    CMEM_exit();

CMEM Error: registerAlloc: ioctl CMEM_IOCREGUSER failed for phys addr 0xa0000000: -1
TIOCL FATAL: The TI Multicore Tools daemon (/usr/bin/ti-mctd) is not running. Re-run application after starting the daemon. Refer User Guide for details.

When try to run ti-mctd:

CMEM Error: allocHeap: ioctl CMEM_IOCALLOCHEAPCACHED failed: -1
ti-mctd: /home/gtbldadm/processor-sdk-linux-krogoth-build/build-CORTEX_1/arago-tmp-external-linaro-toolchain/work/am57xx_evm-linux-gnueabi/opencl/1.1.12.0-r0.0/git/host/mct-daemon/cmem_allocator.h:94: CmemAllocator::CmemAllocator(): Assertion `msmc_alloc_dsp_addr_ == msmc_addr' failed.

request of isolated IGBT gate driver

$
0
0

Hi Team,

Does TI have isolated IGBT gate driver with mirror clamp feature?

Best Regards,
Yaita

TMS320F28377S: TMS320F28377S

$
0
0

Part Number:TMS320F28377S

hello everyone i wish you are well,

i have a problem when programming Delfino F28377s using simulink. i have worked on picolo F28027 without any problem but when i try to burn a program on the kit . this error message appears. Is that required to update something ? 

thanks

BQ24171: the maxmum voltage of cell when supply is 5V

$
0
0

Part Number:BQ24171

Hello Team

My customer is using BQ24171 to change one cell which battery voltage is 4.35V. And the supply voltage is 5V. The question is the charge voltage cannot go to 4.35V.

and they also test use our EVM and the result is same. Could you help give some comment about it? if BQ24171 cannot meet the requirement, could you suggest which one can meet the requirement and P2P is best?

Thanks.

TUSB7340: Can overcurrent detection be disabled?

$
0
0

Part Number:TUSB7340

Hi,

Can the overcurrent detection be disabled? Can it be done through software or must left the pin floating?

Thanks.

- YY

DS90UB928Q-Q1: Periodic strange I2C command output?

$
0
0

Part Number:DS90UB928Q-Q1

Hello,

A customer is seeing a series of strange I2C commands on the bus when DS90UB928 is running stand alone with internal pattern generator active on internal oscillator. There is no serializer connected.

The command is 0x32h ending with NACK, appears in random timing.

Can DS90UB928 output I2C command spontaneously, even though no serialiser is connected? It does not seem likely though.

Thank you.

Regards,

Oguri (TIJ automotive FAE)


TLC5955: Need an Example reference, Did not found enough resources on Internet

$
0
0

Part Number:TLC5955

Hi,

I am trying to build an RGB lightening system and I have selected TLC5955 and TM4C123 but unfortunately did not enough resources on the internet. It would be really great if I can get some reference example. 

Thanks.

AM5718: Image pre-processing hardware

$
0
0

Part Number:AM5718

Does AM57X have an image pre-processing function, that is ISP, for white balance, noise reduction, automatic gain, etc.. AM57X specifications do not refer to the relevant ISP instructions, DM8127 has ISP instructions.

OPT3001: Code is burning properly but Not Working

$
0
0

Part Number:OPT3001

Hi,
I am working on a weather monitoring system which includes OPT3001 while using the I2C protocol in my cc3200 custom board to connect OPT3001. I was able to connect to the device CC3200 but was unable to read data from it. While using the oscilloscope, I observed that the I2C SCL(Clock) goes to IDLE state despite continuous data transfer.
Any help would be really appreciable!

66AK2E05: IPC between ARM cores

$
0
0

Part Number:66AK2E05

Dear Champs,

Can the IPC framework support communication between ARM cores?

My customer is using RTOS SDK and wants to implement communication between ARM cores, and between each ARM cores and DSP core. But, they found there is only simple term 'Host' for ARM cores although there are individual terms - core0, core1, core2,... -  for DSP cores.

Could you please let me know if IPC can be used to communicate between ARM cores, and each ARM core and DSP core?

They tried to modify ipc.cfg.xs to add core number for ARM, but failed.

Thanks and Best Regards,

SI.

Linux/AM5728: Peripheral driver library

$
0
0

Part Number:AM5728

Tool/software: Linux

Hey,

I'm getting started with AM5728 EVM and I'm planning to use linux sdk and running on  a linux host.

I would like to know where exactly can  I find some peripheral driver libraries or test code examples for GPIO, SPI, I2C, PCI-e and EDMA operations.

CC2538: CC2538 have been bricked unexpectedly when we use IAR Download and Debug the firmware ,how to unlock it ?

$
0
0

Part Number:CC2538

Our CC2538 board have been bricked when we use IAR Embedded Workbench "Download and Debug" and IAR crashed unexpectedly.Now, We could't not connect CC2538 board with anything(Flash Programmer 2,IAR,ArmProgConsole command tools)? 

Could TI opening the solutions? I think that TI must be have the internal tool chain(solutions) to resolve the chip locked issue,of course,CC2538 don't have fuse wire in silicon base,i don't think TI will expose the CC2538 resin package to solve the problem,may be TI don't want opening the solution. But we want to solutions very much.


CC1200: I need a TX and RX paring example code for MP testing, and need to know how to test the Occupied frequency bandwidth 2 channels for ARIB STD-T108?

$
0
0

Part Number:CC1200

hi,

1. I need an example code for CC1200 paring, one for TX another one for RX, is there any available example code?

2. And is there any tool can be used to test the ARIB STD-T108 Occupied frequency bandwidth if need to TX 2 channels like below?


Searching for a MCU for flashlight(not an expert)

$
0
0

Dear Gentleman,

in the LED Driver Forum I already had good answers for my question but I need a little bit more information and hope that you can help me.

I am trying to build a LED flashlight.

I already have a powerbank with 5V, 2.1A output and 3* 1W LED.

The other Forum additionally suggested TPS54201 LED Driver to me with the recommendation to use an MCU to archieve several modes for the flashlight (100%, 30%, off, SOS, strobe).

Can you help me to find a suitable MCU to connect those parts to have a batterie powered flashlight?


With kind Regards

Jens

Btw. here is the link to the discussion in the LED Driver Forum "e2e.ti.com/.../2222755

AM3352: RTP packet transmit at regular intervals

$
0
0

Part Number:AM3352

Dear Champs,

My customer developed VoIP phone using Linux PSDK v3.2, and they concerned the intervals of RTP packets are not same.

Is it possible to transmit RTP packet with similar intervals(20ms)?

They found the intervals of RTP packets were not regular and varied so much(40mse, 1mse, ....)

I think this is because of LINUX OS' non-realtime scheduling, and want to check if there is any setting for this in CPSW.

Thanks and Best Regards,

SI.

DLPDLCR2010EVM: 5V power connector

$
0
0

Part Number:DLPDLCR2010EVM

Hello,
customer order a DLPDLCR2010EVM and used a 12V power connector instead of 5V. Now the EVM is not working any more. What could have damaged? May be only the system board is damaged? Do you have spare boards which you can send me?

Regards, Holger

CCS/CCSTUDIO: Segmentation fault

$
0
0

Part Number:CCSTUDIO

Tool/software: Code Composer Studio

Hello,

I have problem with running CCSv6 on Ubuntu. It seems that was happen after OS update 20.06.2017.

There is log from terminal:

eugene@PC:~/ti/ccsv6/eclipse$ ./ccstudio
Segmentation fault (core dumped)

with gdb:

(gdb) run
Starting program: /home/eugene/ti/ccsv6/eclipse/ccstudio
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
process 8605 is executing new program: /home/eugene/ti/ccsv6/eclipse/ccstudio
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
0xb60ea15b in _expand_stack_to(unsigned char*) () from /home/eugene/ti/ccsv6/eclipse/jre/bin/../lib/i386/client/libjvm.so
(gdb) bt
#0  0xb60ea15b in _expand_stack_to(unsigned char*) () from /home/eugene/ti/ccsv6/eclipse/jre/bin/../lib/i386/client/libjvm.so
#1  0xb60ea1f9 in os::Linux::manually_expand_stack(JavaThread*, unsigned char*) () from /home/eugene/ti/ccsv6/eclipse/jre/bin/../lib/i386/client/libjvm.so
#2  0xb60ee2f3 in os::create_attached_thread(JavaThread*) () from /home/eugene/ti/ccsv6/eclipse/jre/bin/../lib/i386/client/libjvm.so
#3  0xb61bc86b in Threads::create_vm(JavaVMInitArgs*, bool*) () from /home/eugene/ti/ccsv6/eclipse/jre/bin/../lib/i386/client/libjvm.so
#4  0xb5fccb3c in JNI_CreateJavaVM () from /home/eugene/ti/ccsv6/eclipse/jre/bin/../lib/i386/client/libjvm.so
#5  0xb7fd222a in startJavaJNI (libPath=0x805b980 "/home/eugene/ti/ccsv6/eclipse/jre/bin/../lib/i386/client/libjvm.so", vmArgs=0x80eb7c0, progArgs=0x80ea2c8,
    jarFile=0x805e470 "/home/eugene/ti/ccsv6/eclipse//plugins/org.eclipse.equinox.launcher_1.3.0.v20140415-2008.jar") at ../eclipseJNI.c:358
#6  0xb7fd3898 in startJavaVM (libPath=0x805b980 "/home/eugene/ti/ccsv6/eclipse/jre/bin/../lib/i386/client/libjvm.so", vmArgs=0x80eb7c0, progArgs=0x80ea2c8,
    jarFile=0x805e470 "/home/eugene/ti/ccsv6/eclipse//plugins/org.eclipse.equinox.launcher_1.3.0.v20140415-2008.jar") at ../eclipseNix.c:174
#7  0xb7fcd1f6 in _run (argc=3, argv=0x804f8d0, vmArgs=0x80673c8) at ../eclipse.c:629
#8  0xb7fccc03 in run (argc=3, argv=0x804f8d0, vmArgs=0x8050280) at ../eclipse.c:465
#9  0x080497a9 in main (argc=14, argv=0x804f8d0) at ../eclipseMain.c:332

TPS2660: SHDN Pin Of TPS26601

$
0
0

Part Number:TPS2660

Hello,

I am using TPS26601 Industrial eFuse in one of our design. I am bit confused about the configuration of SHDN# Pin (Pin 14) . In the functional block diagram in Page 17 of Datasheet, it is clear that the pin is pulled up to a voltage Avdd through a resistor. But couldn't see the value of pull up resistor & the voltage of Avdd. Also in the specification at Page 5 the absolute maximum voltage of SHDN pin is 60 V and the recommended voltage is maximum 4V. What kind of clamping is used there ? ( Voltage ratings ? )

Can someone give an input on these ? 

Thanks in advance.

Regards

Sreejith

Viewing all 262198 articles
Browse latest View live


<script src="https://jsc.adskeeper.com/r/s/rssing.com.1596347.js" async> </script>