Part Number: TPS63020 Hi Team, When using TPS63020, i have below 3 questions need your help: 1."During the power save mode, the output voltage is monitored with a comparator by the threshold comp low and comp high" As i noticed on datasheet, in light load, the output voltage would be 2.5%-3.5% above the normal output. What is the reason that we design like this and what need to care for customer use under this condition? 2.How to understand "The maximum average current in the switches is limited to a typical value of 4 A", in different output current? 3.When Vin=Vout, would the device shrift from buck to boost mode frequenctly, would this bring some noise for EMI performance? Best Regards, Gene
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Forum post: TPS63020: Power save mode output voltage rising
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Forum post: RE: CCS/BQ500215: Required I2C interfacing for monitoring internal variables
Hi Bill, Thanks for your reply. My present laboratory research is not about a new design but applying wireless power transfer approach using development kits to investigate the influence of eddy current in metallic samples for sensing application. With regards to I2C interface adapter, I re-ordered USB_TO_GPIO adapter. However, I need to have technical documents on how to facilitate real-time monitoring of voltage, current and frequency of the transmitting coil in a bq500215EVM-648 using I2C.
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Forum post: RE: LM5060-Q1: LM5060
Hi Jason, Let me check at my end. Hope, you are measuring right across the device pins to avoid any ground shift effect. BR, Rakesh
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Forum post: RE: TPS92630-Q1: Open load fault detection issue
Hi Do you mind to upload the video again, I can't see any picture from it.
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Forum post: RE: TPS92601-Q1: TPS9260x Reference Schematic with SEPIC application
Hi you can reference the EVM's user guide, http://www.ti.com/lit/ug/sluuat5/sluuat5.pdf
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Forum post: RE: TPS929120EVM: Desktop Application Error
Hi Could you show me your node-webkit folder, the total size of it is 176Mb, i want to see whicn file you need.
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Forum post: RE: TPS61032: TPS601032, capacitor shorting circuit
Hi Jozef, when you said "causing short on output", what is happening, is the IC damaged the C3 is critical to stabilize the boost. only C5 is not good enough for the output capacitor.
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Forum post: RE: TPS2493EVM-004: TPS2493 Hot Swap Evaluation Board Mosfet start smoking during the load conditions.
Hi Kishan, I suggest to use LM5069 with two CSD19536KTT MOSFETs in parallel. Can you fill LM5069 calculator and send me to suggest the final values. http://www.ti.com/product/LM5069/toolssoftware Best Regards, Rakesh
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Forum post: RE: TLC6C5912-Q1: About Vcc and VI voltage setting
1: VI(Logic input-voltage) is higher than Vcc(Logic supply voltage) e.g:VI=5.0V, Vcc=3.0V A: safe 2:Apply voltage to VI(logic input-voltage) without applying voltage to Vcc(logic supply voltage) e.g.:VI=5.0V or 3.0V, Vcc=0V A:safe
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Forum post: RE: LM5066: LM5066 shut down the FANs with bit 3 and 9 set (HFCB)
Hi Flavio, The pulsed load from the FAN might be triggering the circuit breaker event and causing the GATE to drop but before shutdown the system is getting out of circuit breaker event. Probing Timer pin voltage will give us more clarity. Can you check that ? Is it possible to probe the actual input current or source current of the MOSFET (just before the output cap) ? BR, Rakesh
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Forum post: RE: TPS61169: Number of "LED strings" can this part drive in parallel
Hi Mike, TPS61500 or LM3410 may be a good solution. Regards Sean
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Forum post: RE: TLC6C5912-Q1: About Vcc and VI voltage setting
Hi Frank-san Thank you for response. I understand. I will tell the customer that there is no problem. Best Regards, Koji Hayashi
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Forum post: RE: TPS61169: Switching Noise at Feedback pin
Hi Sir, Adding a snubber circuit to "SW" point that may help, and I also suggest to try solder any device and check whether the question is still or not. It is a lttle string that the "SW" noise will couple to "FB" pin. Regards SEan
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Forum post: BQ34Z100-G1: FlasjStream file with more than 32 bytes data in string
Part Number: BQ34Z100-G1 Hello, I use direct I2C communication between the BQ34Z100-G1 fuel gauge IC and microcontroller, which act as I2C master. Unfortunately I have not the EV2300/EV2400 device, and at this time I have no possiabilites to buy it. I read a lot of documentation and information about the IC, from Texas Instruments and from this forum. At present time, I can communicate with the IC by I2C protocol. I can send and get results for the commands, the extended commands, read flash data and write flash data into the IC, without EV2300/EV2400 and bqStudio. But! Now I need to write the df.fs file (FlashStream) to the IC. The file I received from my friend who have the EV2400 device and EVM with BQ34Z100-G1 on board. He created the golden image for my battery, and send FlashStream files to me. And I want to write the data from the FlashStream file into IC. But I can not understand the discrepancies between the contents of FlashStream file and the C code from the SLUA801 document. The discrepancies in the fact, that the gauge_execute_fs function writes 32 bytes of data only , from each string of the FlashStream file, to the IC, and the rest of the data, in the string, the function simply throw out. The gauge_execute_fs function C code locate on pages 13 and 14, in SLUA801 document. But FlashStream file (.df.fs) contain W: strings, with mush more than 32 bytes data in strings. Moreover .bq.fs contain a lot W: strings, with more than 32 bytes data. And, as I see, first short strings (commands) from FlashStream file switching the IC into ROM mode. My questions is: Can I write entire data, more than 32 bytes, from FlashStream file string, into BQ34Z100-G1 when it in ROM mode ? Is it will error or not ? Thank in advance. Dmytro
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Forum post: RE: LM5060: TIMER connected to output of comparator
Rakesh, I can't close it, I can only verify the answer.
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Forum post: RE: TPS82140: TPS82140 Phase/Gain margin
Gerold-san, Thanks. Best Regards, Akihisa Tamazaki
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Forum post: RE: LM5066: LM5066 shut down the FANs with bit 3 and 9 set (HFCB)
Hi Rakesh, Why this only happen at low temperature? Recall that I increased the timer from 0.5ms to 5ms, but did not help. AA
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Forum post: RE: LP5912: Voltage regulator IC Transient Response Issue, LP5912-1.2DRVR & LP5912-1.1DRVR
Yes, we also use LP5907SNX-2.8/NOPB in our device. The load transient result of LP5907SNX-2.8/NOPB meets specifications in the same measurement method. Because the cable from the output is really short and the result in different LDO is fine, I think it isn’t the reason. This is the load transient result of LP5907SNX-2.8/NOPB.
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Forum post: RE: LM5161: VIN
Iven-san, Thank you for your help. Does it mean that diode emulation does't work on dropout condition? Best Regards, Kuramochi
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Forum post: RE: TLC59116: About saturation voltage
Hi Tao, You can refer to Fig.2 of datasheet. You can find the minimum voltage required @ 20 mA.
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