BQ24650: STAT1 and STAT2 cycle blink when battery is fully charged
Part Number:BQ24650Hi team,Within our application, the bq24650 blinks periodically STAT1 & 2 with the following cycle steps : STEP numberSTAT1STAT2Supposed charge state1ONOFFCharge in...
View ArticleBQ24630: Can I use the bq24630 for Lithium mixed metal cathode with...
Part Number:BQ24630Or can someone suggest a better alternative? I have a 2s design for IS that requires higher than 8.4V charging voltage to account for diodes in the charge path.With the 24630 I can...
View ArticleTPS62152: TPS62152 output voltage with no input voltage
Part Number:TPS62152Hello, I was wondering what happens, when the output sees a voltage with the input floating or grounded? Would that go beyond the abs max of Vin+0.3? So maxmimum would be 0.3 V at...
View ArticleUCC28880: 24V current limiting solution to meet UL Class 2 power limits
Part Number:UCC28880I have a 24V output 150W AC/DC feeding two circuits each of which can be limited to well under 96W and am looking for a current limiting solution to help me meet UL Class 2 power...
View ArticleOvervoltage protection for vehicle electronics
I am trying to find a solution for overvoltage protection. The device is going to have the following requirementsOperating voltage 32 to 8.5 voltsTransient protection ISO 7637-2:2011Maximum steady...
View ArticleLP55231: lp5523(1) charge pump capacitors
Part Number:LP55231Hi,Is it possible to disable charge pump and omit capacitors connected to C1+ C1-, C2+ C2- and VOUT and connect VOUT to VDD (5 V) for LP5523(1)? I don't need charge pump as there is...
View ArticleUCD90120A: Power Rails Not Disabling When Faulted; GPOs Not Changing State...
Part Number:UCD90120AI am using two UCD90120A power monitors on a board. One power monitor controls my standby rails which sequence on initial power up, and the other controls the local rails which...
View ArticleLM5170-Q1: Usage for same input-output voltage
Part Number:LM5170-Q1Hello, my name is Luis.I am currently searching for a bi-directional converter that allows me to interconnect two groups of batteries of the same voltage (each battery group is...
View ArticleClik here to view.
LP8555: What is maxium delta voltage between each string in one port and LED...
Part Number:LP8555HiI am using a LP8555 to driver 2 LED bars, LED bar informatin as below picture.1)String LEDA6 will have longer trace than other 5 strings in port A. So the Vf will be a little higher...
View ArticleClik here to view.
UCD9248: How to let the fusion digital power designer know I have a external...
Part Number:UCD9248I use ucd9248 to control several power modules. The schemetic is as follows. The current sensing is implemented by a independant instrument amplifer measuring the voltage drop at a...
View ArticleLM5039: About light load operation of the LM5039
Part Number:LM5039HelloI have a question about LM 5039.We are currently checking the operation.When the load becomes low or it gets close to 0 A, there is a function to slow down the frequency and...
View ArticleClik here to view.
CSD85302L: Body Diode forward voltage
Part Number:CSD85302LDear Sir,May I know what is the forward voltage of the body diode for CSD85302L?Is TI has any plot for the Body Diode forward voltage like below?Hope to hear from you soonThanks...
View ArticleLM2775-Q1: Allowable operating ambient temperature
Part Number:LM2775-Q1Hi Champs, My customer is interested in LM2577-Q1 to supply 5V for TCAN1042 device from 3.3V rail.System requires Ta=105C, and TCAN1042 consume 180mA at maximum when bus fault....
View ArticleBQ40Z80: BQ40Z80 Calibration - CC Gain
Part Number:BQ40Z80 How should I go about calculating the floating point value of cc gain outside of the bqstudio. I am using an MIIC-204 iport/usb device to program the bq40z80 chips. I noticed...
View ArticleLM5122EVM-2PH: LM5122EVM-2PH changes for required specification.
Part Number:LM5122EVM-2PHHello, I am using LM5122EVM-2PH board, for my application Vin- (22-28)Volts, Vout - 36Volts, Iout -7.5 Amps. If possible to make changes to get my Specification ? if...
View ArticleClik here to view.
TPS54620: Sequential Startup of Multiple TPS54520: PWRGD connected to...
Part Number:TPS54620Hi,I have multiple TPS54620 that I am aiming to power-on sequentially using the technique illustrated in the part manual (reproduced below):I have connected the PWRGD pin of one of...
View ArticleClik here to view.
TPS55340: TPS55340 EVM(TPS55340EVM-017) VIN noise
Part Number:TPS55340Hi,Could you please why EVM board which VIN pin have noise (Due to our customer board also have this kind of noise)Warm Regards,Lin
View ArticleBQ24707: Setting the output charge regulation voltage is not as expected
Part Number:BQ24707Hello guys,I can communicate through SMBUS: ChargeCurrent() = 1A. write ChargerVoltage() = ~8.4V, with power supply set to 20V, but the BAT voltage is still 20V.I want to decrease...
View ArticleTPS62081: Exceeding 2mA in snooze mode
Part Number:TPS62081In normal usage, we do not exceed 2mA in snooze mode, as recommended in datasheet's Recommended Operating conditions.However, in production stage, before MCU firmware programming...
View ArticleREF200: Modern SMT REF200 Replacement or Alternative
Part Number:REF200Hello,Working on a tiny design and am looking for a replacement or alternative to the venerable REF200 which is only available in the "huge" SOIC package. Needing both a current...
View Article