LED Driver ICs Forum Discussions
Hi,
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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Hi,
I am evaluating TLD7002, I have questions about the interface. I see the diagram on datasheet first page, the HSLI connects directly to CANH and CANL of MCU, from my understanding, CANH and CANL will transfer CAN data format, but I don't see TLD7002 datasheet indicates it can solve CAN data format, it looks like it only can support UART data. So I have two questions:
1. does the data sheet is not right ? or my understanding is not rigfht.
2. do i need to add CAN transceiver between MCU and TLD7002, if the MCU out
Show LessHi,
I am planning to add a pull-up resistor between the +Vs and EN (pin_1) of the BCR420UE6327HTSA1 so I can enable/disable the chip via an open-drain output. I have attached the screenshot for reference.
Is there a limit as to maximum value of the pull-up resistor that I can use without significantly impacting the base current that's driving the transistor and/or affecting the overall performance of the driver? Based on the datasheet, there seem to be an internal resistor after the EN pin (red circle in the screenshot), but I haven't been able to find the value of this resistor in the datasheet.
Thanks and hope to hear your feedback soon.
Cheers,
RC
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