Forum Post: RE: Not able to change the qmax cell 0 value in bq34z1xx
Thanks Thomas. The device was gone bad, replaced it.I have facing another issue.I am trying to configure the BQ device through the microcontroller. I am able to configure a sublcass with out any...
View ArticleForum Post: bq78pl114 firmware update calibration
if performing firmware-update with bqWizard from bq78pl114 to ...114s12, the voltage calibration has to be explicitly preserved ("... click the Preserve Calibration check box"...).If uploading the...
View ArticleForum Post: RE: TPS61202 internal FB resistance value
Hello Chris san, Thank you for the information.I understand that 1-2uA is reference data(not guaranteed data) due to there is not the leakage current at FB pin .And Since FB pin leakage curent is 1-2uA...
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Forum Post: RE: Questions about TPS76201DBV
Hi, RyanThank you for reply. I will answer a few questions for you.Yes , measuring method is correct.This device is to have recommended 4.7uF output capacitor.R562 is the low resistance of the power...
View ArticleForum Post: RE: BQ20Z75 high current consumption issue
Hi Shirley,I am afraid that's not possible. That current is required for the proper functionality of the gauge.To detect the device is in sleep mode, you need to connect an ammeter to measure the...
View ArticleForum Post: RE: TPS54620 Spontaneous shutdown and restart
With Cc I mean the capacitor between Vout and Vsense used for the type 3 compensation.
View ArticleForum Post: LM25574 Inverting Buck-Boost--Webench problems?
I'm trying to use Webench to design an inverting buck boost power supply with the LM25574. Input 8-14V, Output -9V @ 100 mA, Fsw 700 kHz. Webench gives me a design that is topologically correct. But...
View ArticleForum Post: bq3050 / Capacitor on BAT pin
Hi Everyone,I would like to know the impact on the operation of bq3050 if the smaller capacitance than 1uF will be used on BAT pin. I know that the BAT pin will supply power to LDO in bq3050 when...
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Forum Post: Solar Magic controllers and partially shadowed PV modules
I tested Solar magic module and found that when we have partially shadowed photovoltaic module, controller select the MPP with bigger voltage (right) but better is point with bigger power (left). I...
View ArticleForum Post: BQ24192 charger IC charging current issue ?
Dear All, We are using BQ24192 in our design. By default charging current should be 2.036mA but when i connect Li-Ion 3800mAh completely discharged battery for charging its taking only 730mA....
View ArticleForum Post: RE: Not able to change the qmax cell 0 value in bq34z1xx
The device does not support switch switching subclasses in the same transmission. You will have to issue a STOP bit and start a new transmission.
View ArticleForum Post: RE: DCR010505 does not start when using to isolate RS232
TOM,Thank you very much for your support, when I attached the 5V6 zener diode and 1uF capacitor, according to ‘DCRnegative voltage busclampcircuit.PDF’ it works pretty well!Best regards.Stefan Pindera
View ArticleForum Post: RE: bq3050 / Capacitor on BAT pin
Hi Tom-san,Thank you for your quick response. I understood the purpose of this capacitor. I will request our customer to evaluate by using the capacitance they want to use with their system load.Best...
View ArticleForum Post: CPCKN pulldown design
Hi guys,in bq77908a's datasheet its written down that there are recommended application circuits for the CPCKN pulldown (page 7), when series FETs are used.Can you please send them to me or give me a...
View ArticleForum Post: Question about Vauxh pin of LM5064
Hi, I can't understand the function of Vauxh pin. There is not much description in the datasheet. Is it just an auxiliary input? What is the difference between Vauxh and Vcc? Thanks!
View ArticleForum Post: UCD9248 device detection
Hi, We are working on a FPGA board which has 3 nos of UCD9248 controllers (Addr 52d, 53d, 54d) for generating several voltage rails being used on our board. We have connected the PMBus Data, CLK,...
View ArticleForum Post: TPS75005 Enable/Disable Issue
Hey there,I have a USB powered application using a TPS75005 dual LDO regulator.The EN pin is driven by a USB-UART bridge IC.The issue is that when the EN pin is pulled low by the bridge IC, Voltages on...
View ArticleForum Post: RE: TPS51315
Hi Eli,Please contact Sue Xu (xiao_xu@ti.com) directly. She is supporting this part now.Thanks,Nancy
View ArticleForum Post: DCDC L, C and R characteristic value of every pin
My customer requires L, C and R characteristic value of every pin like a IBIS model about the following device.Is it possible to give me the...
View ArticleForum Post: RE: Bad HF Dynamic Impedance values leading to cell balancing...
Hi Tom,Yes we are working together, but there are some points i want answered.What I don't understand is why are OCV values still approximated/calculated even though the cell has been in a relaxed...
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