SLVSHJ8 February   2024 TPS61299-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 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1  Boost Control Operation
      2. 6.3.2  Version Detection
      3. 6.3.3  Under-voltage Lockout
      4. 6.3.4  Switching Frequency
      5. 6.3.5  Input Current Limit
      6. 6.3.6  Enable and Disable
      7. 6.3.7  Soft-Start Timing
      8. 6.3.8  Down Mode
      9. 6.3.9  Pass-Through Operation
      10. 6.3.10 Output Short-to-Ground Protection
      11. 6.3.11 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Fast Load Transient Mode and Normal Mode
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application-Li-ion Battery to 5V Boost Converter Under Fast Mode
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Maximum Output Current
        2. 7.2.2.2 Inductor Selection
        3. 7.2.2.3 Output Capacitor Selection
        4. 7.2.2.4 Input Capacitor Selection
      3. 7.2.3 Application Curves
    3. 7.3 Typical Application-Li-ion Battery to 5V Boost Converter Under Normal Mode
      1. 7.3.1 Design Requirements
      2. 7.3.2 Application Curves
    4. 7.4 Power Supply Recommendations
    5. 7.5 Layout
      1. 7.5.1 Layout Guidelines
      2. 7.5.2 Layout Example
      3. 7.5.3 Thermal Information
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Third-Party Products Disclaimer
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

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

6.3.2 Version Detection

The TPS61299-Q1 supports 21 internal output voltage setting options by connecting a resistor between the VSEL pin and ground.

During start-up, when output voltage reaches close to 1.8V, the device starts to detect the configuration

conditions of the VSEL pin. The TPS61299-Q1 checks the VSEL pin by lowering resistance setting options to higher setting options until the user finds the setting configuration by a 10μs clock. After detecting the configuration, the TPS61299-Q1 latches the setting output regulation voltage.

The TPS61299-Q1 does not detect the VSEL pins during operation, so changing the resistor during operation does not change the VSEL setting. Toggling the EN pin during operation is one way to refresh it.

For proper operation, TI suggests that the setting resistance accuracy must be 1% and the parasitic capacity of

the VSEL pin be less than 10pF.

Table 6-1 VSEL Pin Configuration
Resistance (kΩ) VOUT_REG (V) Resistance (kΩ) VOUT_REG (V) Resistance (kΩ) VOUT_REG (V) Resistance (kΩ) VOUT_REG (V)

0(GND)

3.3

12.1

4.5

49.9

3.6

191

2.5

3.01

5.5

14.7

4.5(fast)

75

3.5

237

2.2

4.75

5.5(fast)

18.2

4.3

100

3.2

294

2

6.19

5.2

22.6

4

124

3

365

1.8

7.87

5

28.7

3.8

154

2.8

442/

VOUT pin

5(fast)

9.76

4.8