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audra wells
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audra wells
Asked: November 24, 2023In:
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Hello,I want to purchase a wireless charging IC like STWBC86JR, but the data sheet says that it should be within the average frequency of 110kHZ to 205kHZ, so can not I apply it with a resonant frequency of 13.56 MHz? ...Read more

Hello,

I want to purchase a wireless charging IC like STWBC86JR, but the data sheet says that it should be within the average frequency of 110kHZ to 205kHZ, so can not I apply it with a resonant frequency of 13.56 MHz? Is there an IC available on that frequency?

Is there a way to design an additional circuit and communicate at that frequency?

Thank you

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chargingcircuitdesignfrequencyICSTWBC86JRwireless
  1. Alex thomas

    Welcome @audrawells, to the community! The STWBC86 is a Qi power transmitter, i.e. it's set to the frequency range100.205 kHz defined in the Qi standard. There's presently no similar power transmitter available for 13.56 MHz, but there are possibilities to transfer and to do wireless charging with NRead more

    Welcome audra wells, to the community!
    The STWBC86 is a Qi power transmitter, i.e. it’s set to the frequency range100.205 kHz defined in the Qi standard.
    There’s presently no similar power transmitter available for 13.56 MHz, but there are possibilities to transfer and to do wireless charging with NFC.
    Does it answer your question?
    Regards
    Alex Thomas

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sachinsharma
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sachinsharma
Asked: September 1, 2023In:
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Hello, I learned that XDPL8221 can achieve 120- 277V input, 0- 10V dimming, and CC or CV output. These functions are what I need. I also want it to support TRIAC dimmer, can it support TRIAC dimming? Or is there any other recommended ...Read more

Hello,

I learned that XDPL8221 can achieve 120- 277V input, 0- 10V dimming, and CC or CV output. These functions are what I need.

I also want it to support TRIAC dimmer, can it support TRIAC dimming?

Or is there any other recommended IC that can achieve such a function?

Thank You

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dimmersICledtriacxdpl8221
  1. Alex thomas

    Hi @sachinsharma, XDPL8221 has a PWM dimming interface which is implemented with the aid of CDM10V. The duty cycle sensed at the PWM pin will set the output current accordingly. Please have a look at the LED/SMPS Flyback Control IC IRS2982S which may fulfill your requirement. This driver is TRIAC diRead more

    Hi sachinsharma,

    XDPL8221 has a PWM dimming interface which is implemented with the aid of CDM10V. The duty cycle sensed at the PWM pin will set the output current accordingly.

    Please have a look at the LED/SMPS Flyback Control IC IRS2982S which may fulfill your requirement. This driver is TRIAC dimmable. Refer to the attached application note for more details.

    Regards,
    Alex Thomas

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Alex thomas
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Alex thomas
Asked: February 8, 2023In:
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Hi, I have an IC on the side which is written” HVLED01A” on it and I want to know its output number. I wonder is equal to the” HVLED001A” output number or if it’s another IC? Thank you in advance.

Hi, I have an IC on the side which is written” HVLED01A” on it and I want to know its output number.

I wonder is equal to the” HVLED001A” output number or if it’s another IC?

Thank you in advance.

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codehvled01aICledoptoelectronics
  1. vikas Nagpal

    Welcome, to the community! yes, I can confirm the HVLED001A uses the device marking HVLED01A. Good luck! If the problem is resolved, please mark this content as answered by selecting Select as best,  This will help other users find that answer faster. Thank You

    Welcome, to the community!

    yes, I can confirm the HVLED001A uses the device marking HVLED01A.

    Good luck!

    If the problem is resolved, please mark this content as answered by selecting Select as best,  This will help other users find that answer faster.

    Thank You

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harpoon
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harpoon
Asked: December 26, 2022In:
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We have developed 2kW PFC Board with ICE3PCS01G. When I did first power on with 12.15VDC,  Vref not coming from IC. After that I replace the new chip, then it worked fine. But again after changing the nearest components during ...Read more

We have developed 2kW PFC Board with ICE3PCS01G.
When I did first power on with 12.15VDC,  Vref not coming from IC. After that I replace the new chip, then it worked fine. But again after changing the nearest components during troubleshooting, the same problem came (vref gone), But ICOMP=5V is coming. 4 nos of IC got damaged and the same problem coming.

please suggest a solution.

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ICICE3PCS01GuartusbVref
  1. Alex thomas

    Thanks for your Question. For the IC, the turn-on voltage is between 11.5~12.9V, turn of is between 10.5~11.9V. So, for 12.15V, if the Vcc is from 12.9V down to it, the IC will run. If VCC is from 10V up to 12.15V, the IC is off and can't work.

    Thanks for your Question.

    For the IC, the turn-on voltage is between 11.5~12.9V, turn of is between 10.5~11.9V.

    So, for 12.15V, if the Vcc is from 12.9V down to it, the IC will run. If VCC is from 10V up to 12.15V, the IC is off and can’t work.

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ashishgawade
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ashishgawade
Asked: December 2, 2022In:
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Hii, We’re using the below-mentioned IC in our design. While trying to flash the same using J Link Debugger Plus from Segger, the GUI of the tool asks to select the microcontroller from the drop-down list. But Under the OEM, Infineon, ...Read more

Hii,

We’re using the below-mentioned IC in our design. While trying to flash the same using J Link Debugger Plus from Segger, the GUI of the tool asks to select the microcontroller from the drop-down list.
But Under the OEM, Infineon, the CYT2B7 series isn’t displayed. Hence we’re unable to select the target device from the GUI. Without selecting the target device, unable to proceed further with the flashing.

Hence I kindly request you to help me in this regard at the earliest.
CYT2B73CADQ0AZEGS  –  ARM Microcontrollers – Auto MCU

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cyt2b7cyt2b73cadq0azegsdebuggerIClinkmcumicrocontrollerssegger
  1. vikas Nagpal

    For connecting the device, you can enter the full device name with core i.e. Device> CYT2B73CAD_M0 or CYT2B73CAD_M4. or after getting the pop communication in the below-attached image, you can click on the" OK" tab and select a proper device with core and then click" OK". Refer to the below snippRead more

    For connecting the device, you can enter the full device name with core i.e. Device> CYT2B73CAD_M0 or CYT2B73CAD_M4.

    or after getting the pop communication in the below-attached image, you can click on the” OK” tab and select a proper device with core and then click” OK”. Refer to the below snippet.

    Thanks & Regards

    Vikas

     

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ashishgawade
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ashishgawade
Asked: September 19, 2022In:
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We’re using the L6920 to drive a 1-watt LED. We’re trying to apply the under voltage cut-off ( lockout) too. We chose the values of the voltage ground connected to the LBI pin similar that the value that comes to say ...Read more

We’re using the L6920 to drive a 1-watt LED.

We’re trying to apply the under voltage cut-off ( lockout) too. We chose the values of the voltage ground connected to the LBI pin similar that the value that comes to say 3V. Still, the IC didn’t shut off at 3V.
We also tried connecting the LBO to Vout with a 200K resistor in between. Even this didn’t work.

Can someone help apply this circuit?
Thanks!

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circuitdriveICl6920ledsoptoelectronics
  1. Best Answer
    Alex thomas

    Hi Ashish, However, you would notice that LBI input is connected to LBO output and that's the only purpose of this input, If you look into the block diagram of L6920 in its datasheet. LBI input doesn't shut down the output! Still, you need to use LBO output to shut down accordingly, If you require tRead more

    Hi Ashish,

    However, you would notice that LBI input is connected to LBO output and that’s the only purpose of this input, If you look into the block diagram of L6920 in its datasheet. LBI input doesn’t shut down the output!
    Still, you need to use LBO output to shut down accordingly, If you require to shut down the output.

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dev krishnan
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dev krishnan
Asked: September 2, 2022In:
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Hi everyone I’m going to use STLD40D Driver IC for my TFT LCD. For driving LCD backlight, I’v chosen this Driver from ST. But I can’t figure out the function theory of this driver. could you please explain for me the STLD40D ...Read more

Hi everyone

I’m going to use STLD40D Driver IC for my TFT LCD. For driving LCD backlight, I’v chosen this Driver from ST. But I can’t figure out the function theory of this driver.

could you please explain for me the STLD40D function theory and how to use that?

thank you in advance.

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driverICledstld40d
  1. vikas Nagpal

    Well, the STLD40D is a boost converter. The function is also described in the data sheet, section5.1. It must be taken into account that the converter not only has a min off time, but also a maximum on time. The switch- on moment is particularly interesting firstly there's no FB signal, so the powerRead more

    Well, the STLD40D is a boost converter. The function is also described in the data sheet, section5.1.

    It must be taken into account that the converter not only has a min off time, but also a maximum on time.
    The switch- on moment is particularly interesting firstly there’s no FB signal, so the power stage is switched on( SW to GND), which charges the boost inductor. As there isn’t yet enough affair voltage to drive a current through the LEDs, pin FB remains zero. still, the maximum on time now kicks in and switches the power stage off again, whereby the energy stored in the boost inductor is delivered to the LEDs at a high voltage and results in a corresponding current and a signal to FB. From now on, FB can regulate normally.

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Alex thomas
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Alex thomas
Asked: August 26, 2022In:
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I’ve a design. I’ve 13 switch and these switches control to leds. For example when i click first button, first led will be on( likewise when i click again, it’ll be out). So microcontroller want to knows everything about it. ...Read more

I’ve a design. I’ve 13 switch and these switches control to leds. For example when i click first button, first led will be on( likewise when i click again, it’ll be out). So microcontroller want to knows everything about it. But how can i control these leds? Because i want 36 * 3 io pins( RGB). Similarly after i want to control lightness of all leds with dimmer.

Do you have any IC hints for leds control & leds pwm controller?

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dimmerICledlighting and ledoptoelectronicsrgbstm32 mcusstm32f7switch
  1. vikas Nagpal

    There are numerous LED drivers also from STMicroelectronics, e.g. LED1202 LED1642GW etc ( see LED Array Drivers STMicroelectronics) Of course, the correct type depends on several factors, e.g. how you want to control the LEDs( I2C, SPI, etc). With RGB LEDs you'll clearly only switch one LED per chanRead more

    There are numerous LED drivers also from STMicroelectronics, e.g.

    LED1202
    LED1642GW
    etc ( see LED Array Drivers STMicroelectronics)

    Of course, the correct type depends on several factors, e.g. how you want to control the LEDs( I2C, SPI, etc). With RGB LEDs you’ll clearly only switch one LED per channel, so you should be suitable to get by with one LED driver for 5V.

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dev krishnan
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dev krishnan
Asked: June 29, 2022In:
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In the DA9062-EVAL1:What is the full P/N of the DA9062 IC? What will be the default OTP version ? Can you share the Buck/LDO voltages + sequence? In case we are using different power sequence, what options we have to update the PMIC EVM for ...Read more

In the DA9062-EVAL1:

  1. What is the full P/N of the DA9062 IC?
  2. What will be the default OTP version ? Can you share the Buck/LDO voltages + sequence?
  3. In case we are using different power sequence, what options we have to update the PMIC EVM for our needs (assuming the IC already arrived programmed with OTP)?
  4. Is it possible to used the EVM  while the the IC is unprogrammed (no OTP) by using PC mode with INI file?
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Buck/LDO voltagesda9062da9062-eval1ICIC P/NPMIC EVM
  1. pallavi sharma

    Let me answer your questions 1.) The part number changes slightly depending if the OTP of the part is programmed or not. DA9062-XXAM1 is for parts on a tray AMC are parts in T&R. We have some standard variants like: - DA9062-0AAM1 for Qualcom Atlas 7 (On tray) - DA9062-11AM1 Avnet MiniZed boardRead more

    Let me answer your questions

    1.) The part number changes slightly depending if the OTP of the part is programmed or not.

    DA9062-XXAM1 is for parts on a tray AMC are parts in T&R.

    We have some standard variants like:

    – DA9062-0AAM1 for Qualcom Atlas 7 (On tray)

    – DA9062-11AM1 Avnet MiniZed board

    – DA9062-62AM1 i.MX6S Autoboot

    – DA9062-A0AM1 In Circuit Programming Variant (this is an empty unprogrammed part)

    Please note that the in case of an automotive option there is an additional -A at the end of the code. These parts will need to be programmed at factory to fulfill the AEC-Q100 etc requirements.

    2.) On the EV Kit there is a preprogram that has following outputs.Buck1 1.38V, Buck 2 1.5V, Buck3 3.3V and buck 4 1.8V, LDO1 3.3V, LDO2 1.8V,LDO3 3.0V and LDO4 2.8V.

    sequencing is slot1 LDO1, slot2 Buck1, slot3 Buck2, slot4 Buck3, slot5 Buck4, slot7 LDO 2 and 3, slot8 LDO4.Step time is set to 1,024ms.

    3.) There is a switch on the mother board that defines a mode we call Power Commander (PC mode). This mode prevents normal or programmed OTP register transfer to softregister, instead it writes the soft registers from the selected INI-file You can create yourself with the GUI and edit as you wish and save it. This will not be programmed to the OTP but it can be used for testing etc.

    4.) it is possible but one should be very careful and rememmber to turn on the power commander mode on, the switch. but you can do exactly pretty much the same with programmed part.

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