SLVSGZ9A February   2025  – May 2025 TPS4141-Q1

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
    1. 4.1 Pin Functions TPS4141-Q1
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Power Ratings
    6. 5.6 Electrical Characteristics
    7. 5.7 Switching Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Uni-directional Voltage Sensing
      2. 6.3.2 Bi-directional Voltage Sensing
      3. 6.3.3 Bi-directional and Uni-directional Voltage Sensing
      4. 6.3.4 High Voltage Input Range
      5. 6.3.5 Calculating the Output Voltage (VAOUT)
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Divider Ratio Selection
        2. 7.2.2.2 Error Estimation
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Receiving Notification of Documentation Updates
    2. 8.2 Support Resources
    3. 8.3 Trademarks
    4. 8.4 Electrostatic Discharge Caution
    5. 8.5 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information
    1. 10.1 Tape and Reel Information

6.3.4 High Voltage Input Range

The input voltages on HV, VHV, that can be sensed accurately by the TPS4141-Q1 depends on the DIV ratio selected and the REF voltage applied, VREF. The common mode input and output voltage ranges of the integrated amplifier limit VHV voltages that can be supported. Exceeding these ranges, cause the amplifier input or output to saturate.

The amplifier common mode output range, CMRAOUT, limits the range of output voltages the amplifier can drive to AOUT. The voltage of AOUT is limited to CMRAOUT(min) to CMRAOUT(max) with respect to HVGND. Similarly, the amplifier common mode input range, CMRAIN, limits the range of input voltages the amplifier can amplify. The input swing is limited to CMRAIN(min) to CMRAIN(max) with respect to HVGND.

The range of voltages that can be measured accurately depends on the divider ratio selected by DIV0 and DIV1 and the external reference voltage applied to REF. Figure 6-5 shows the typical characteristic of input ranges supported. For each DIV setting, a pair of curves is shown. The top curve corresponds to the upper bound of the VHV voltage for the selected DIV setting and the bottom curve corresponds to the lower bound of the VHV voltage. When the TPS4141-Q1 is configured for uni-directional measurements, REF is either connected to HVGND in the application or connected internally to HVGND via the DIV0 and DIV1 selections. In this case, VREF = 0V.

TPS4141-Q1 HV input ranges supported Figure 6-5 HV input ranges supported