SLVSCH9E December   2014  – March 2022 TPS62406-Q1 , TPS62407-Q1 , TPS62422-Q1 , TPS62423-Q1 , TPS62424-Q1

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and 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 Timing Requirements
    7. 7.7 Switching Characteristics
    8. 7.8 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
      1. 8.1.1 Converter 1
      2. 8.1.2 Converter 2
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Enable
      2. 8.3.2 DEF_1 Pin Function
      3. 8.3.3 180° Out-of-Phase Operation
      4. 8.3.4 Short-Circuit Protection
      5. 8.3.5 Thermal Shutdown
      6. 8.3.6 EasyScale Interface: One-Pin Serial Interface for Dynamic Output-Voltage Adjustment
        1. 8.3.6.1 General
        2. 8.3.6.2 Protocol
    4. 8.4 Device Functional Modes
      1. 8.4.1 Power-Save Mode
        1. 8.4.1.1 Dynamic Voltage Positioning
        2. 8.4.1.2 Soft Start
        3. 8.4.1.3 100% Duty-Cycle Low-Dropout Operation
        4. 8.4.1.4 Undervoltage Lockout
      2. 8.4.2 Mode Selection
    5. 8.5 Programming
      1. 8.5.1 Addressable Registers
        1. 8.5.1.1 Bit Decoding
        2. 8.5.1.2 Acknowledge
        3. 8.5.1.3 Mode Selection
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Output Voltage Setting
          1. 9.2.2.1.1 Converter 1 Fixed Default Output-Voltage Setting
          2. 9.2.2.1.2 Converter 2 Fixed Default Output-Voltage Setting
        2. 9.2.2.2 Output Filter Design (Inductor and Output Capacitor)
          1. 9.2.2.2.1 Inductor Selection
          2. 9.2.2.2.2 Output-Capacitor Selection
          3. 9.2.2.2.3 Input Capacitor Selection
      3. 9.2.3 Application Curves
    3. 9.3 System Examples
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Support Resources
    2. 12.2 Receiving Notification of Documentation Updates
    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

6 Pin Configuration and Functions

GUID-45206076-B0FA-4675-8C77-B2547010B50D-low.gifFigure 6-1 DRC Package10-Pin VSON With Thermal PadTop View
Table 6-1 Pin Functions
PIN I/O DESCRIPTION
NAME NO.
ADJ2 1 I Output voltage sense pin for the internal feedback divider. This pin must connect directly to the output. If using the EasyScale interface-on converter 2, this pin must also connect directly to the output.
DEF_1 5 I This pin defines the output voltage of converter 1 and is a digital input, that selects between two fixed default output voltages. See Section 5 for output voltage setting of the different device options. For TPS62406-Q1 and TPS62407-Q1 the output voltage is same independent of DEF_1 pin level. This pin must be terminated.
EN1 7 I Enable input for converter 1, active-high. This pin must be terminated.
EN2 9 I Enable input for converter 2, active-high. This pin must be terminated.
FB1 4 I Output voltage sense pin for the internal feedback divider. This pin is connected to the output.
GND 8 — GND for both converters; connect this pin to the thermal pad.
MODE/DATA 2 I/O This pin has two functions:
1. Operation-mode selection: With low level, enables power-save mode where the device operates in PFM mode at light loads and automatically enters PWM mode at heavy loads. Pulling this PIN to high forces the device to operate in PWM mode over the whole load range.
2. EasyScale interface function: One-wire serial interface to change the output voltage of both converters. The pin has an open-drain output to provide an acknowledge condition if requested. The current into the open-drain output stage may not exceed 500 μA. The EasyScale interface is active if either EN1 or EN2 is high.
SW1 6 I/O Switch pin of converter 1. Connect to inductor
SW2 10 I/O Switch pin of converter 2. Connect to inductor
VIN 3 I Input pin, connect to supply or battery voltage, 2.5 V to 6 V. Connect the input capacitor CIN as close as possible between VIN pin and GND pin.
Thermal pad — Connect to GND