UCD9246: Using a switcher to provide 3.3V
Part Number:UCD9246Is there any concern about using a buck converter to supply V33A, V33D, and V33DIO of the UCD9246? I have a LMZM23601 providing 3.3V on the board, and for simplicity and efficiency...
View ArticleRTOS/CCSTUDIO-SITARA: Running TI-RTOS on A15 core
Part Number:CCSTUDIO-SITARATool/software: TI-RTOSWe are using a PHYTEC PHYCORE AM5728 SOM which has eMMC for nonvolatile memory. Although there are plans for TI to support booting TI-RTOS from eMMC...
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TPS50601-SP: voltage doubler and buck converter problem
Part Number:TPS50601-SPI am trying to generate a negative voltage by using a doubler circuit tapped off the pulse train of TPS50601-SP. However, I am getting some bad oscillations at cold temperatures...
View ArticleOPA454: OPA454 Output Current Limiting
Part Number:OPA454I am looking for some reference information or recommendations on how to best limit the current of OPA454.I have an application where I want to do some voltage/current sweeps on some...
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TPS82130: TPS82130 power up/down sequence schematic review
Part Number:TPS82130Dear expert,could you please help review the schematic design with TPS82130? especially about the power up/down sequence with PG/EN.five pcs TPS82130, all input is the same Vin=5V,...
View ArticleTPS22810: Is local input capacitance required or optional?
Part Number:TPS22810Hello,I'm looking at using TPS22810 for a 12V daughtercard application, I_LOAD < 1A. The daughtercard has 20 uF of capacitance on the 12V input, and I want TPS22810 to isolate...
View ArticleMSP430FR2433: SLAU445h family user guide error about cpux
Part Number:MSP430FR2433SLAU445h, the family user guide for 2xx and 4xx family on page 124, "Chapter 4 CPUX" says (paraphrasing since it wouldn't cut and paste nicely) that the CPUX architecture for...
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TMS320F280049C: CMPSS and AQ PWM Control
Part Number:TMS320F280049CHi,I have the ePWM1 module set up to Active High Complementary, so that ePWM1A is the master and ePWM1B is the complement. I am using the CMPSS module to use the internal DAC...
View ArticleBQ76940EVM: Discharge enable/disable switch
Part Number:BQ76940EVMHello,I am using a BQ76940EVM as a part of a E-bike battery pack I am making. I was wondering if it was possible to modify the board to allow for a switch to turn on and off...
View ArticleTMS320F280049: Temperature sensor and sample code
Part Number:TMS320F280049 Hello,I have questions about temperature sensor and sample code on driverlib and device_support folder.1. For F280049 internal temperature sensor, which document should...
View ArticleCC2538: how do I send fragmentation packets?
Part Number:CC2538Dear all, I find that if I want to transmit fragmented packets, the function APSF_SendFragmented_t(APSDE_DataReq_t *pReq); is one I can use. Besides that is there any other...
View ArticleCC3220S-LAUNCHXL: which drivers to use for ADC?
Part Number:CC3220S-LAUNCHXLHello,I want to use ADC along with DMA in CC3220.I see that there are 2 ADC drivers located at "ti\simplelink_cc32xx_sdk_2_10_00_04\source\ti\devices\cc32xx\driverlib" and...
View ArticleBQ24004: Use BQ24004 to charge 2 Lithium Ion rechargeable batteries
Part Number:BQ24004Dear Sir/Madam,I plan to have two Lithium ion battery in serial so that I have a higher supply voltage to boost to 24V. Should I use battery charging controller like BQ24004 that can...
View ArticleTPS65981: Blank SPI external flash memory programming
Part Number:TPS65981Hi,Assuming flash memory in TPS65981EVM is blank, is it mandatory to use an external tool like Aadvark to program it, or this programming can be made through TPS6598x Application...
View ArticleWEBENCH® Tools/TPS55340: To use one step or two step boost from 3.3V input...
Part Number:TPS55340Tool/software: WEBENCH® Design ToolsDear Sir/Madam,I am driving a few strings of 8 LED and I need 24v output voltage. My input is Lithium ion battery and has a minimum voltage of...
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TPS61021A: Strange Phase Measurement
Part Number:TPS61021AHello,We are trying to use the TPS61021A in a 3.3V to 3.8V boost.When collecting the bode plot, the phase measurement looks very strange. The device does not have any odd behavior...
View ArticleUCD9081: USB GPIO POwer sequncer not working
Part Number:UCD9081I got the USB Interface adapter module and also downloaded the software for the same. I will be using that module to read out the power sequence.The problem is that neither the...
View ArticleAFE5807EVM: External ADC sampling rate can be higher like 80 MHz?
Part Number:AFE5807EVMWe want to use this evaluation board to receive data from a high-frequency transducer (central frequency: ~30MHz), the highest sampling rate for the IC can be 80MHz, but the...
View ArticleUCC27714: HO outputs stay on high - EN disabled via pull down
Part Number:UCC27714I have designed in three UCC27714 as the gate drivers for a BLDC ESC. I used the exact schematic as shown on the data sheet. I am experiencing a similar problem of HO staying high...
View ArticleTPS63700: CCM to DCM Transition Equation
Part Number:TPS63700Is there an equation to determine when this device enters DCM/PSM? With a 4.7uH inductor, at what load current is the transition from CCM to DCM?
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