DLPC3470: DLP LED Current cannot exceed 1.2A

Part Number: DLPC3470
Other Parts Discussed in Thread: DLPA2005,

Hello TI:


     Our product design incorporates DMD2010/DLPA2005/DLPC3470. We refer to TIDA-080001-DLP2010EVM for implementation, and the schematic diagram is basically the same (1. MSP430/ITE6801 and other parts have been removed), but the hardware layout has been adjusted according to actual needs.

1. Our firmware adopts “dlp2010evm-lc_7.3.1.img”;

2.All  VinA、VinC、VinR、VINL_1 andVINL_2  input voltages are 5V.

DLPA2005 can output a maximum current of 2.5A, but our device cannot increase the current through LED after reaching about 1170mA. May I ask what is going on with this issue.