ZHCSJN9E january 2019 – april 2023 DLPC3436
PRODUCTION DATA
A Pico projector is comprised of a DLP230NP/NPSE (.23 Full HD) DMD, a DLPC34x6 controller, a XC7Z020-1CLG484I4493 FPGA, and a DLPAxxxx PMIC/LED driver. The controller does the digital image processing, the DLPAxxxx provides the needed analog functions for the projector, and DMD is the display device for producing the projected image.
In addition to the three DLP chips in the chipset, other chips may be needed. At a minimum a flash part is needed to store the software and firmware to control the controller. In addition, a flash part is needed to store the FPGA program.
The illumination light that is applied to the DMD is typically from red, green, and blue LEDs. These are often contained in three separate packages, but sometimes more than one color of LED die may be in the same package to reduce the overall size of the Pico projector.
The entire Pico projector can be turned on and off by using a single signal called PROJ_ON. When PROJ_ON is high, the projector turns on and begins displaying images. When PROJ_ON is set low, the projector turns off and draws just microamps of current on SYSPWR. When PROJ_ON is set low, the projector chipset turns off and draws just microamps of current on SYSPWR. If 1.8 V is supplied separately from the PMIC (as is the case with the DLPA200x), when PROJ_ON is set low, the 1.8-V supply can continue to be left at 1.8 V and used by other non-projector sections of the product.