SLVSD73B December   2015  – March 2018 TPS4H000-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Typical Application Schematic
      2.      Driving a Capacitive Load With Adjustable Current Limit
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 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
    6. 7.6 Switching Characteristics
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Pin Current and Voltage Conventions
      2. 8.3.2 Accurate Current Sense
      3. 8.3.3 Adjustable Current Limit
      4. 8.3.4 Inductive-Load Switching-Off Clamp
      5. 8.3.5 Fault Detection and Reporting
        1. 8.3.5.1 Diagnostic Enable Function
        2. 8.3.5.2 Multiplexing of Current Sense
        3. 8.3.5.3 Fault Table
        4. 8.3.5.4 STx and FAULT Reporting
      6. 8.3.6 Full Diagnostics
        1. 8.3.6.1 Short-to-GND and Overload Detection
        2. 8.3.6.2 Open-Load Detection
          1. 8.3.6.2.1 Channel On
          2. 8.3.6.2.2 Channel Off
        3. 8.3.6.3 Short-to-Battery Detection
        4. 8.3.6.4 Reverse Polarity Detection
        5. 8.3.6.5 Thermal Fault Detection
          1. 8.3.6.5.1 Thermal Shutdown
      7. 8.3.7 Full Protections
        1. 8.3.7.1 UVLO Protection
        2. 8.3.7.2 Loss-of-GND Protection
        3. 8.3.7.3 Protection for Loss of Power Supply
        4. 8.3.7.4 Reverse-Current Protection
        5. 8.3.7.5 MCU I/O Protection
    4. 8.4 Device Functional Modes
      1. 8.4.1 Working Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Examples
      1. 11.2.1 Without a GND Network
      2. 11.2.2 With a GND Network
  12. 12Device and Documentation Support
    1. 12.1 Receiving Notification of Documentation Updates
    2. 12.2 Community Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

9.2.3 Application Curves

Figure 38 shows a test example of soft-start when driving a big capacitive load. Figure 39 shows an expanded waveform of the output current.

TPS4H000-Q1 app-curv1_SLVSD73.gif
Load current = 0.2 A CH2 = FAULT INx = ↑
Current limit = 0.5 A CH3 = output voltage CH1 = INx
CL = 2.3 mF CH4 = output current VS = 12 V
Figure 38. Driving a Capacitive Load
TPS4H000-Q1 app-curv2_SLVSD73.gif
Load current = 0.2 A CH2 = FAULT INx = ↑
Current limit = 0.5 A CH3 = output voltage CH1 = INx
CL = 2.3 mF CH4 = output current VVS = 12 V
Figure 39. Driving a Capacitive Load, Expanded Waveform

Figure 40 shows a test example of PWM-mode driving. Figure 41 shows the expanded waveform of the rising edge. Figure 42 shows the expanded waveform of the falling edge.

TPS4H000-Q1 app-curv3_SLVSD73.gif
INx = 200-Hz PWM, 50% duty cycle CH2 = CS voltage
VVS = 13.5 V CH3 = output voltage
CH1 = INx signal CH4 = output current
Figure 40. PWM Signal Driving
TPS4H000-Q1 app-curv5_SLVSD73.gif
INx = 200-Hz PWM, 50% duty cycle CH2 = CS voltage
VVS = 13.5 V CH3 = output voltage
CH1 = INx signal CH4 = output current
Figure 42. Expanded Waveform of Falling Edge
TPS4H000-Q1 app-curv4_SLVSD73.gif
INx = 200-Hz PWM, 50% duty cycle CH2 = CS voltage
VVS = 13.5 V CH3 = output voltage
CH1 = INx signal CH4 = output current
Figure 41. Expanded Waveform of Rising Edge