TPS92643-Q1: Shunt FET dimming

Hello Hirotsugu,

This device has been used many time with our LMM parts (TPS9266x devices) which is a shunt fet dimming matrix device.  You can use that as a reference for connections and control.  If you plan to do this discreetly then the only thing you should be aware of and should consider is the limit on the slew rate of the output. See below:

You may need to limit the slew rate of turn on and off of the FETs depending on how shunt fet dimming is implemented.  This is especially critical if you have long harness between the TPS92643 and the shunt fets and LEDs.  

-fhoude