SLVSHA3A March   2024  – October 2024 TPS22996H-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  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 Electrical Characteristics
    6. 5.6 Switching Characteristics
    7. 5.7 Typical DC Characteristics
    8. 5.8 Typical AC Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 ON and OFF Control
      2. 7.3.2 Input Capacitor (Optional)
      3. 7.3.3 Output Capacitor (Optional)
      4. 7.3.4 Quick Output Discharge
      5. 7.3.5 Humidity Resistance
      6. 7.3.6 Thermal Shutdown
      7. 7.3.7 Adjustable Rise Time
    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
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
      3. 8.4.3 Power Dissipation
  10. 9 Device and Documentation Support
    1. 9.1 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

7.3.7 Adjustable Rise Time

TPS22996H-Q1 integrates a unique architecture for adjusting the rise time. The device senses the current flowing into the ON1 and ON2 (ION) pins and utilizes the information to set the rise time. This allows the user to adjust the rise time by connecting a series resistance that is determined by the ON pin voltage. Refer to Table 7-1 for reference on setting the resistor.

Table 7-1 Typical Rise Time (VBIAS = 5V)
ION VIN = 0.6V VIN = 1.8V VIN = 2.5V VIN = 3.3V VIN = 5V
20μA 764μs 1380μs

1700μs

 1955μs 2350μs
100μA 203μs 343μs 426μs 500μs 626μs
250μA 85μs 148μs 180μs 208μs 265μs
Table 7-2 Typical Rise Time (VBIAS = 3.3V)
ION VIN = 0.6V VIN = 1.8V VIN = 2.5V VIN = 3.3V
20μA 738μs 1420μs

1735μs

 2040μs
100μA 191μs 360μs 437μs 512μs
250μA 88μs 239μs 170μs 204μs

The following equation can be used to estimate the series resistance required to meet the desired rise time.

Equation 1. RTx = 1000 × (VONx_GPIO – 1.2V) / IONx – Ri

where:

  • RTx = Channel × series resistance in kΩ.
  • Ri = Internal ON pin resistance kΩ.
  • VONx_GPIO = Channel × GPIO voltage connected to ONx pin in V.
  • IONx = Current flowing into the ONx pin in µA.
TPS22996H-Q1 TPS22996H-Q1 Adjustable Rise Time Configuration Figure 7-1 TPS22996H-Q1 Adjustable Rise Time Configuration