LED Driver ICs Forum Discussions
Hello,
In the application note of the ILD6150 at the section 2.4.5 Selection of capacitor CIN the calcul find a 𝐶𝐼𝑁 ≥ 𝟒. 𝟑𝟎 𝝁F but in the following text it says a 47 µF capacitor is recommanded.
So my question is simple, is this a mistake or not? Should it be 4.7 instead of 47?
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Hello
We are currently evaluating TLD5190 for our needs. We need an output of 14.4V (4s LifePo4 charger) and a current of 25A with a current limit of the input current. The input voltage is from 11V to 16V. We would like to use TLD5190QV (voltage regulation) and IPB80N04S4L-04 mosfets.
I would like to know if the mentioned combination is suitable for our application (~350W) and if the TLD5190 is able to drive the mentioned FETs. If not, is it possible to use external mosfet drivers? Maybe a suggestion for more suitable FETs?
...in advance Thanks for the help and opinions!
Show LessHi,
我想使用OTP Wizard软件和OTP Programmer来烧录TLD7002-16ES器件,OTP Wizard软件能使用commnad line来控制烧录吗?谢谢!
We are sending inquiries regarding TLD6098-1EP IC PWM DUTY
We are trying to apply in Daytime Running Lamp, Position Lamp.
1) Is it possible to control the PWM duty cycle 5% in the IC to satisfy the LED minimum guaranteed current?
2) Due to low dimming control such as Analog Dimming (SET) PIN 30% control and PWM DUTY 5% control
Can output current error and flicker occur?
Dear Infineon and Community,
I need of some suggestions. I'm designing a lighting application to drive some outputs (32VDC, 1A max each) to high-power LED's that need individual dimming. I'm using PCA9685 to generate 12-bit PWM (rise/fall times!!!) up to about 1.5kHz. Initially I thought about using low-side n-channel mosfets to drive the outputs, but since the LED's are far off-board, I need to add some short-circuit protection to each output.
I'm sure I don't need to explain that using a fuse in series with a mosfet will cause the mosfet to blow, not the fuse (because, well.. semiconductors are faster than fuses, duh). So, I'm looking for suggestions how to go on about this. I noticed Infineon offers some overcurrent-protected mosfets. Would using such protected mosfet in series with a fuse be sufficient for the fuse to blow before the mosfet does in case of a short? There aren't many devices that can survive a pulse at 32V 1A+ for more than a few hundred microseconds.
The board will be powered at 32VDC, but the components should be rated at least 50V absolute maximum (TVS). The mosfets should not be bigger than DPAK or SOIC-8 (board space constraint). The fuses are rated fast-blow (0.02A²s). Can you propose a soluton?
Thanks in advance.
Show LessHello!
I'm experimenting with BCR601_60V_IVCTRL & REF-XDPL8219 Evaluation Boards. Before hooking some LED stripes to the output I wanted to understand how to set the un-dimmed current and how dimming works. My test setup is like this (please see photos attached):
- Electronic resistance connected to BRC601 Board output
- 100kO poti connected to MFIO / GND Pins
I was expecting to draw up to 700mAh from the board:
R11, R12 and R13 determine the maximum current of the LED. With the given values of 1.2 Ω, 1.2 Ω and 12 Ω the undimmed LED current is 700 mA typical.
However I could not draw more than 170mA before some protection kicked in and Voltage dropped to zero. Also, changing the resistance (poti) did change oputput voltage and current but in an abrupt manner.
So I'm wondering what I'm doing wrong here and if such test setup with an electronic resistance is not going to work.
Thanks,
Jens
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I am looking for a use case recommendation for a low-cost 3A single-element (Cree) LED, non-dimming, driver circuit with a 24VDC source supply. Not sure if this is the right approach and forum but really appreciate any help or direction. Thank you!
Show Lessregarding the BCR420UE6327HTSA1 - the datasheet indicates Rext is determined by refering to a graph.
Hi Infineon experts,
I'm reading the datasheet of TLD7002, but I'm confused about the meaning of "P-number", could you help explain about this? Thanks!
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