SLVSC55C August   2013  – November 2021 TPS62090-Q1

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 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
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Enable and Disable (EN)
      2. 7.3.2  Soft Start (SS) and Hiccup Current Limit During Start-Up
      3. 7.3.3  Voltage Tracking (SS)
      4. 7.3.4  Short-Circuit Protection (Hiccup Mode)
      5. 7.3.5  Output Discharge Function
      6. 7.3.6  Power Good Output (PG)
      7. 7.3.7  Frequency Set Pin (FREQ)
      8. 7.3.8  Undervoltage Lockout (UVLO)
      9. 7.3.9  Thermal Shutdown
      10. 7.3.10 Charge Pump (CP, CN)
    4. 7.4 Device Functional Modes
      1. 7.4.1 Pulse Width Modulation Operation
      2. 7.4.2 Power Save Mode Operation
      3. 7.4.3 Low-Dropout Operation (100% Duty Cycle)
  8. 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 Inductor Selection
        2. 8.2.2.2 Input and Output Capacitor Selection
        3. 8.2.2.3 Setting the Output Voltage
      3. 8.2.3 Application Curves
    3. 8.3 System Examples
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Support Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

8.2.2 Detailed Design Procedure

The first step in the design procedure is the selection of the output filter components. To simplify this process, Table 8-2 and Table 8-3 list possible inductor and capacitor value combinations.

Table 8-2 Output Filter Selection (2.8-MHz Operation, FREQ = GND)
INDUCTOR VALUE (µH)(3)OUTPUT CAPACITOR VALUE (µF)(2)
102247100150
0.47—√(1)√√√
1√√√√√
2.2—————
3.3—————
(1) Typical application configuration. Other check marks indicate alternative filter combinations.
(2) Capacitance tolerance and bias voltage de-rating is anticipated. The effective capacitance varies by +20% and –50%.
(3) Inductor tolerance and current de-rating is anticipated. The effective inductance varies by +20% and –30%.
Table 8-3 Output Filter Selection (1.4-MHz Operation, FREQ = VIN)
INDUCTOR VALUE (µH)(3)OUTPUT CAPACITOR VALUE (µF)(2)
102247100150
0.47—√√√√
1√√(1)√√√
2.2√√√√√
3.3—————
(1) Typical application configuration. Other check marks indicate alternative filter combinations.
(2) Capacitance tolerance and bias voltage de-rating is anticipated. The effective capacitance varies by +20% and –50%.
(3) Inductor tolerance and current de-rating is anticipated. The effective inductance varies by +20% and –30%.