DLPS015G april   2010  – june 2023 DLPA200

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Device Configurations Table
  7. 6 Pin Configuration and Functions
  8. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information
    5. 7.5  Electrical Characteristics Control Logic
    6. 7.6  5-V Linear Regulator
    7. 7.7  Bias Voltage Boost Converter
    8. 7.8  Reset Voltage Buck-Boost Converter
    9. 7.9  VOFFSET/DMDVCC2 Regulator
    10. 7.10 Switching Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 5-V Linear Regulator
      2. 8.3.2 Bias Voltage Boost Converter
      3. 8.3.3 Reset Voltage Buck-Boost Converter
      4. 8.3.4 VOFFSET/DMDVCC2 Regulator
      5. 8.3.5 Serial Communications Port (SCP)
  10. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Component Selection Guidelines
  11. 10Power Supply Recommendations
    1. 10.1 Power Supply Rail Guidelines
  12. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Grounding Guidelines
    2. 11.2 Thermal Considerations
  13. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Device Nomenclature
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Support Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  14. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8.3.2 Bias Voltage Boost Converter

The bias voltage converter is a switching supply that operates at 1.5 MHz. The bias switching device switches 180° out-of-phase with the reset switching device.

The converter supplies the internal bias voltage for the high voltage FET switches and the external VBIAS for the DMD Pond of Mirrors. The VBIAS voltage level can be different for different generations of DMDs. The VBIAS voltage level is configured by the DLP Controller chip over the Serial Communication Port (SCP). Four control bits select the voltage level while a fifth bit is the on/off control. The module provides two status bits to indicate latched and unlatched status bits for under-voltage (VUV) and current-limit (CL) conditions.

Figure 8-2 shows the block diagram of this module. The input decoupling capacitors are shared with other internal DLPA200 modules. See Section 9.1.1 for recommended component values.

GUID-EB27175B-FB2E-43A5-924A-EBA6D85BA804-low.gifFigure 8-2 Bias Voltage Boost Converter Block Diagram