ZHCSOK9A october   2021  – june 2023 DLPA300

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics Control Logic
    6. 6.6  5-V Linear Regulator
    7. 6.7  Bias Voltage Boost Converter
    8. 6.8  Reset Voltage Buck-Boost Converter
    9. 6.9  VOFFSET Regulator
    10. 6.10 Switching Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 5-V Linear Regulator
      2. 7.3.2 Bias Voltage Boost Converter
      3. 7.3.3 Reset Voltage Buck-Boost Converter
      4. 7.3.4 VOFFSET Regulator
      5. 7.3.5 Serial Communications Port (SCP)
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Component Selection Guidelines
      3. 8.2.3 Application Curves
  10. 9 Power Supply Recommendations
    1. 9.1 Power Supply Rail Guidelines
  11. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Grounding Guidelines
    2. 10.2 Thermal Considerations
  12. 11Device and Documentation Support
    1. 11.1 第三方产品免责声明
    2. 11.2 Device Support
      1. 11.2.1 Device Nomenclature
    3. 11.3 Documentation Support
      1. 11.3.1 Related Documentation
    4. 11.4 接收文档更新通知
    5. 11.5 支持资源
    6. 11.6 Trademarks
    7. 11.7 静电放电警告
    8. 11.8 术语表
  13. 12Mechanical, Packaging, and Orderable Information

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7.1 Overview

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 VOFFSET and VBIAS voltages required by the DMD. VRESET 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: VBIAS (21-V) and VOFFSET (10-V). The exact values are controlled by the DLPC4430 or DLPC4420 display controller. VRESET 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 VBIAS, VRESET, and VOFFSET; control the generation of the micromirror clock pulses; and control the general operation of the DLPA300 micromirror driver.