The DLPA300 is a micromirror driver for the 9-μm pixel family of DMDs. These include the DLP780NE, DLP800RE. DLP780TE, DLP781NE, DLP781TE, DLP801RE and DLP801XE DMDs. The DLPA300 micromirror driver generates V_OFFSET and V_BIAS voltages required by the DMD. V_RESET for the DMDs is generated by an external voltage regulator. Under the control of the DLPC4430 (or DLPC4420) display controller, the DLPA300 micromirror driver switches these three voltage supplies to control the micromirror reset waveform via the MBRST pins on the DMD.

Reliable function and operation of the DLPA300 micromirror driver require that it is used as part of the family of 9-μm pixel DMD chipsets. For LED and RGB direct laser illumination, the DLPA100 can be replaced by discrete power supply ICs and a power supply sequencer.

The DLPA300 consists of three functional blocks: a high-voltage power supply function, a DMD micromirror clock generation function, and a serial communication (SCP) function.

The high-voltage power supply function generates two specialized voltage levels: V_BIAS (21-V) and V_OFFSET (10-V). The exact values are controlled by the DLPC4430 or DLPC4420 display controller. V_RESET is generated by external voltage regulator.

The micromirror clock generation function uses the two voltages generated by the high-voltage power supply function and the one generated by the external voltage regulator to create the fifteen micromirror clock pluses (output the OUT[0:14] pins of the DLPA300). OUT15 is unused.

The serial communication function allows the display controller to control the generation of V_BIAS, V_RESET, and V_OFFSET; control the generation of the micromirror clock pulses; and control the general operation of the DLPA300 micromirror driver.