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BQ24640: Charging with discrete solution vs BQ24640
Part Number: BQ24640Hi, I have just read this document http://www.ti.com/lit/ug/tidu594/tidu594.pdf.In the document, it introduces a block diagram (attached below) to charge the super-cap. It says that...
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TPS62745: help clearing up 55mV output ripple
Part Number: TPS62745Hello,I am trying to design the tps62745 into a product and this supply (3.3V output version) will be supplying anywhere from 10mA to 10uA loads. I'm not sure exactly where in...
View ArticleTPS43060: Need to confirm whether TPS43060 is appropriate
Part Number: TPS43060Dear all,Our actual demand is 18 ~ 28V voltage input, need 28V, 6A stable output. TPS43060 was selected preliminarily.Please help confirm whether TPS 4306 can provide 28V output...
View ArticleLM5088-Q1: about feedback resistors selection
Part Number: LM5088-Q1Hi TeamD/S says the bottom feedabck resistor(Rfb1) sould be selected by the current through the resistor (1.2V/Rfb1) is in between 1mA and 100uA.my question is ..[1] why we set...
View ArticleMC33063A: confirm if MC33063A is appropriate
Part Number: MC33063ADear all,Customers use two lead-acid batteries in series for standby power. At present, there is a demand for battery charging which increases the voltage of 28V to 30V and the...
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TPS63031: Iq/ground current at light load
Part Number: TPS63031Hi,I use the TPS63031 together with a MCU and cellular module. My system is battery powered by a Li-Ion battery (3.7V/2500mAh). When my system goes to sleep, the load (for...
View ArticleUCD3138: How to output same duty from 2 different DPWM module
Part Number: UCD3138Hi Experts,We would like to output same duty from 2 different DPWM module , can you show me how to implement this purpose?other questions,would I get same Yn if I input same xn to...
View ArticleTPS65400: Output voltage NOT getting generated on TPS65400
Part Number: TPS65400Hi,We are using TPS65400 quad PMIC on one of our internla testing board for controlling Vout through I2C interface. We referred datasheet as well as Webench as a reference to...
View ArticleBQ76930: why floating TS pin doesn't work when TS pin is not used?
Part Number: BQ76930Hi,in our datasheet it's said to connect TS pin to a 10k resistor when TS pin is not used.My customer tested with TS pin floating, and find that I2C communication doesn't work when...
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BQ27545-G1: Device Marking different position
Part Number: BQ27545-G1Dear TI Experts,My customer found the device Marking of BQ27545 printed on different position of chip, as below picture, some mark is on the middle and some on the top, this...
View ArticleBQ77915: BQ77915
Part Number: BQ77915Hello,I have designed 5 series BMS using this IC for 5 series its working fine.But for 3 series & 5 series, I m not getting DSG and CHG Gate voltage.
View ArticleBQ76940EVM: Regsrc maximum voltage llimit
Part Number: BQ76940EVMDear Team,As per datasheet of Bq76940 maximim voltage one can apply is 36 volts, but in EVM actual voltage is @ same pin is more than 36 , so please comment , why it is working,...
View ArticleTLC6C5712-Q1: Unused connection of PWM input pin
Part Number: TLC6C5712-Q1Hi!My customer does not need PWM dimming control and will not use this pin.Can I leave this pin floating? Or is it better to tie it to ground with a pull-down resistor?Please...
View ArticleTPS2553: Schematic review
Part Number: TPS2553Hi Sirs,Sorry to bother you.Could you help check our schematic as below?Any suggestion are welcome. Thanks!!Schematic:(Please visit the site to view this file)
View ArticleBQ40Z50-R2: The alternative chemical fuse inquiry
Part Number: BQ40Z50-R2Hi sir,We are designing a 4S1P lithium battery pack with a maximum charging current of 5A.The chemical fuse is described in the BQ40Z50 Advanced Gas Gauge Circuit Design document...
View ArticleUCC28063: Circuit Design and Precautions
Part Number: UCC28063Hi My customer is designing a 400W SMPS.PFC Block (UCC29063)1) Is there any problem when the VINAC voltage is repeatedly turned on and off while the VCC voltage is applied?2) In...
View ArticleUCC256303: Circuit Design and Precautions
Part Number: UCC256303Our customer is designing a 400W SMPS.UCC256303 will be applied. Please review the circuit diagram below.Additional questions1) I don't want to use 8 pin BW terminal. Is there a...
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TPS560430: Maximum Voltage Consultation
Part Number: TPS560430Hi, I saw datasheet input voltage suggestion 36V, And the maximum voltage define 38V, What is the maximum withstand voltage of this IC?Is there a definition of peak...
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BQ33100: Cell balancing for super cap with discrete solution vs BQ33100
Part Number: BQ33100Hi, I have two questions about cell balancing of BQ33100.Should the cell balancing be enabled when the super-cap just starts to be charged or after the voltage of the super-caps...
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TPS63000: The chip itself consumes a lot of power because of the high fever.
Part Number: TPS63000Equipment 3.6V battery power supply, found that the battery quickly lost power, board MCU, TPS63000, wireless module several chips, test wireless module working current 100mA, not...
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