DLPA2005 datasheet(35/60 Pages) TI

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8 Application and Implementation

Note

Information in the following applications sections is not part of the TI component specification,

and TI does not warrant its accuracy or completeness. TI’s customers are responsible for

determining suitability of components for their purposes, as well as validating and testing their design

implementation to confirm system functionality.

8.1 Application Information

The DLPC1438 3D Print controller with DLP300S or DLP301S DMD enables high resolution fast 3D printer

products. This section describes typical 3D printer DLP systems with and without actuation. The DMDs are

spatial light modulators which reflect incoming light from an illumination source to one of two directions, with the

primary direction being into projection or collection optics. The optical architecture of the system and the format

of the image digital data coming into the DLPC1438 are what primarily determine the application requirements.

Typical applications include:

• DLP 3D printer

– Additive manufacturing

– Vat polymerization

– Masked stereolithography (mSLA 3D printer)

• Light exposure: programmable spatial and temporal light exposure

8.2 Typical Application

8.2.1 Pattern projector for 3D printer without actuation and without FPGA

DLPC1438 controller with DLP300S/DLP301S DMD enables high accuracy and low cost 3D printer products.

Figure 8-1 shows a typical 3D printer system block diagram using external print mode.

Illumination

optics

DLPC1438

DMD

DLPA200x

TI DLP Chipset

Non-TI Device

VBIAS, VOFFSET,

VRESET

SYSPWR

Sub-LVDS DATA

PROJ_ON

HOST_IRQ

Flash

VLED

CTRL

RLIM

1.8 V external

1.8 V

PROJ_ON

VCC_18

VCC_INTF

VCC_FLSH

VDD

SPI (4)

INTZ

Thermistor

VDDLP12

SPI0

SPI1

RESETZ

PARKZ

GPIO_8

GPIO_10

CMP_OUT

1.8 V

1.1 V

Front End

Processor

Supplies

VSPI

1.8 V

1.1 Reg

1.1 V

LED_SEL (2)

RC_

CHARGE

1.8 V

Parallel (12)

Figure 8-1. System without FPGA and without actuator

8.2.1.1 Design Requirements

A DLP 3D printer can be created using the DLP300S/DLP301S, DLPC1438, and DLPA200x PMIC/LED driver. In

addition to the DLP chipset, other IC components may be needed including a flash device to store the software

and firmware to control the DLPC1438.

www.ti.com

DLPC1438

DLPS216A – JULY 2021 – REVISED AUGUST 2021

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