Regarding XDPL8219 OpAmp component selection
Greetings, we're developing a power supply based on XDPL8219 IC's reference design. We're not even close to advanced electronic skill level so we have a question about the selection to OpAmp IC.
In reference design, there is used [TSM103WAIDT] but we're trying to find alternatives for it, so we have a few questions;
1) Is the SR - Slew Rate very critical here? What is an optimal range of the slew rate for OpAmp for XDPL8219
2) Same as above but, GBP - Gain Bandwidth Product.
SR: 0.4 V/us
GBP: 900 kHz
So, For example, We can select 1000 kHz or 0.35 V/us?
Is there any +- limit or percent for both of these values of the Op Amp?
Thank you very much
Best RegardsShow Less
I'm hoping that someone would be able to take a look at a schematic for a custom TLD2142-1EP design (using the TLD2142-1EP chip) to verify that our design is implemented correctly (schematic PDF attached).
Should this be feasible given the design and the capabilities of the TLD2142-1EP chip we are using?
Thanks in advance!
Vin for MOSFET: 54V
Vcc for driver: 15V
I have tested BRC602 IC with IPD70R360P7S N-channel MOSFET to driver LEDs.
I have used 3x1.2R parallel resistor to get 0.4R resistance.
According to the formulation of the BCR602
Current (I) should be 1.0Amper...
But BCR602 driver does not limit the current. I have changed resistors and BCR602 IC with new ones (1.5R to get lower current), but the same problem.
By the way, PWM dimming is working. When I apply %20 dimming, I read 0.650A on the LEDs. Without dimming, I read 1.770A on the LEDs. (I think there is no limiter for current, but the power supply reduces the output voltage so I read 1.750A max, If I use a higher watt value power supply, I can read over 1.750A on the LEDs, because the driver does not limit the current.)
I read 0.051V on the Rsense resistors.
Please check the schematic and photo. Need your support asap to produce PCB for a project.
Thank you very much
Stop and tail multiplex LED lights. The LED fishing net structure meets n-1. The LED current is 55mA and the duty cycle is 8.3%. T1 is 12 LED lamps and T2 is 15 LED lamps.
Using LITIX ™ Basic + series， Is there a recommended combination scheme for basic + series products with the lowest cost?For example, two TLD2141-3EP？Show Less
I'm evaluating a LED driver solution for a client and have been trying for some time now in vein to get my TLD5542-1HIPOW_EVAL board talking to the config wizard via the uIO board. The stick shows up in device manager as "HID-Compliant-Vendor-Defined-Device" but the Config Wizzard just will not recognise it saying no device connected. Is there anything I'm missing or I can do otherwise to debug the issue? I'm well stuck.
I've just been following the guide for the eval board here:
By the way I had another problem which is that config wizard is not available on the Mac version of Infineon Toolbox however this is not documented anywhere and took me some time to figure out. Just thought I'd offer this as feedback.
Thanks for your time.
I am trying to replace the obsolete ballast controller IR21592IC and UCC2818 (PFC IC) with ICB2FL03G to turn ON and dim a 500W UV lamp. Using mains power, I am using UCC2818A IC to implement PFC boost converter and storing the voltage in a 220uF/450V electrolytic capacitor. Then I am using a half bridge circuit and UBA2014 to drive it and using a series resonant network, turn on a 500W ballast lamp (C3500).
I am looking for a reference design for this application which required dimming the lamp. we have a production quantity of more than 10000 boards per year.
This is critical and I don't have much time to make this work, any help is truly appreciated.
Thanks, KamalShow Less
Hello, Im looking into Infineons LED lighting soultions. I have a Question about what is an LED driver? I hear the term often and it seems like its in differnet context every time. Is a driver the broad term used to cover circuitry that powers LEDs? Or is it an IC that is used regulate current to help keep LEDs effecient?Show Less
PWM may be applied in two different ways in an application.
PWM via PWMI-pin
When PWM is applied via PWM-pin of the first IC only, this will not be propagated to the second and subsequent ICs. Reason is that the IN_SET current is not affected by the PWMI-pin status and will remain stable during the deactivation phase of the PWM. Therefore, the second IC channels will be constantly active while the first IC channel will operate in PWM.
In this case, we have to apply the same PWM to the PWMI-pin of all the ICs in the application.
PWM via IN_SET-pin
When PWM is applied via IN_SET pin of the first IC only, this will be propagated to the second and subsequent ICs. IN_SET current will change according to the PWM and those changes will be mirrored to the OUT_SET pin and therefore will be propagated to the second IC.
IN_SET to OUT_SET activation and deactivation delay times have to be considered for a synchronized result (P_6.6.10, P_6.6.11).