LED Driver ICs Forum Discussions
Hi,
I'm trying to fix some problems on our new power supply designed with ICL5102.
This power supply seems to work almost properly: good full load regolation, no noise, good startup...
But when I measure the gates signals of the HB, I found there is not a duty cycle of 50% (with associates dead time).
On the picture below:
green = gate HS
blu = gate LS
Yellow = LSCS
Is there a way to change the duty cycle of the HB?
Or maybe do I have any kind of protection that modify the duty cycle?
Thanks a lot in advance,
Cristiano Sostero
Show Less i am facing issue to install .dp vision on my computer.
pop-up message ask to download java runtime environment 1.7 .
I have install .dp vision on another system around last week but such issue not occurred or never ask for java runtime environment 1.7
i have install same several time but issue occured first time only.
Hello community,
currently I am taking TLD7002-16ES # TLD7002-16ES driver in operation. The driver is mounted on our own PCB. NeitherOTP programmer board or the OTP wizard is used. The driver always returns 0x01 as output status ("internal fault" always on) and the driver stays in init mode (regarding ACK byte). The same effect comes while operating with Arduino.
Some relevant infomation read from register:
OST Status: 0x00 for all channel
OTP Status: 0x00
Otp register value read, starting from 0x83:
Show Less
I am considering providing backup power to the Vcc pin of the ILD8150XUMA1. Under normal circumstances, we plan to supply approximately 60V to the Vin pin. However, there are potential fault conditions where the voltage may drop to as low as 1V. In such situations, we want the internal logic of the chip to continue functioning normally. My question is: Will supplying a backup voltage of around 6.8V to the Vcc pin in the absence of Vin cause any issues or complications?
I understand VCC provides the output voltage from internal regulator but still can this be use to provide 6.8V externally.
Show Less
We are designing an SSR CV converter with ICL8810 24V 3A. The reference schematic shows the startup circuit consisting of 30K x 3 resistors with a depletion mode MOS controlled by the TD pin via NPN transistor 2N3904. Would like to understand whether is it possible to have only resistor based startup and avoid the MOS + NPN transistor and other components to keep the circuit simple. What are the tradeoffs of having a only resistor based startup circuit vs MOS + NPN transistor based circuit?
Show LessI need Excel design tool for ICL 8810. Application - Lighting.
MY MAIL ID - Sudhansu.gupta.yz@rabyte.com
Hi
I'm not sure I'm in the right forum here.
I am looking for a step up flyback controller with an input voltage of 12 - 30V DC and with an enable so I can use a microcontroller to toggle it on/off. I looked at the XDPL8210 which looked perfect except for the supply requirements. Is there another controller you can recommend?
Show LessI learned that XDPL8221 can achieve 120-277V input, 0-10V dimming, and CC or CV output. These functions are what I need.
I also need it to support TRIAC dimmer, can it support TRIAC dimming?
Or is there any other recommended IC that can achieve the above function?
Hi everyone,
For a project involving the stimulation of live-cells we are in need of a LED driver with a very low output current ripple.
Other parameters such as power loss are not as important
Furthermore the IC schould support:
- Vin max >30V
- Iout max >1A (in total. the number of channels doesnt matter although less channels is preferred)
Thank you all for you support.
All the best!
Jordi