Lastcallhall and myself have messed around a bit with the ROHM BA7230LS in an effort to make an RGB to Component converter on the same quality level as my previous BA6592F-based converter, but that's easier to build.
Unfortunately for Lastcallhall, he wasn't able to get anything working, and at first, I had issues, too. It took some work, but I got a working converter put together using the BA7230LS. A few tweaks needed to be made as this chip has some differences compared to the BA6592F:
1) The Component outputs seem a little weaker than on the BA6592F, requiring more amplification of each signal.
2) Although there's a Composite Sync input on the chip, it doesn't mix the Sync with Luminance unless you feed it back into the chip. Because of this, mixing of Composite Sync directly into Luminance is required.
The result with the BA7230LS is nothing short of amazing. Here's a preview shot of Daytona USA running on the Saturn via my new converter:
This is better than anything I got out of the BA6592F. Whereas that chip induced cooler colors, the BA7230LS preserves the color temperature of the RGB source, so if your RGB source has very warm and saturated colors, you will get those same colors in Component.
And now, the schematic, which I've attached to the post. I can confirm the circuit working on the following consoles:
-Genesis Model 1 (VA2 motherboard tested, but all Genesis Model 1s should work with the circuit)
-RGB-modded PC Engine Duo-R
I encourage others to test this circuit on other consoles and report back.
EDIT: CIRCUIT UPDATED TO VERSION 5.0.
Click here for the new circuit.