Electronics > Power/Renewable Energy/EV's

Bypassing color temperature switch S4525S in a LED driver with DP9511B chip

(1/1)

Victoria:
Hi everyone,

I have a driver for a nice lamp which controls two sets of LEDs inside; warm, and cold white. Which is great, just some engineer came up with an idea to drive these colors by the wall switch so that every time you turn on the light, another color shines up your live (cold, warm and both in a half power). Yup, you turn it off, and it turns on with another color.

Apart from the fact I would shoot the person who came up with such idea to the outer space, the driver is relatively simple.

It has a good part DP9511B, which is apparently a constant current LED driver chip sophisticated so much that its datasheet is confidential. And the evil part, which is the color temperature switching chip S4525S, whose existence in this universe arouses controversy and whose datasheet I could not find.

Assuming the schematics of my driver is like the application example mentioned on an S4525S seller's linked website:



What else might that evil S4525S chip do if the LEDs seem to have power supply ready to be delivered other than just switching between the LED stripes to feed?

I mean, isn't the S4525S chip just a switch that connects over FETs its GND pin to D1 and D2 (in a notably stupid way)?

And to get my beautiful lamp to shine natural white just suck it off the board, flip it over the rainbow and just connect the output of the current driver with stripes as below?



Thank you!
A few unimportant images attached..

irab88:
I created an account solely to comment on this post, because I was looking for the exact same thing. I had two lights, each with three of these chips. I yolo'd and bridged from pin 4 to pins 5/6 and 7/8, and plugged it in.

It works. Both colors full-time.

So it's as simple as adding a wire or two, no chip removal necessary.

Next:
Same thing.
L1一L2一(L1+L2)/2 As far I understand mean that power of both lines in 3-rd state are reduced?!
I whant to try to add button switch between r3 and clk pin to manualy change mode.
Any thoughts?

Navigation

[0] Message Index