SLVS888D December   2008  – April 2026 TPS60150

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 Enable
      2. 6.3.2 Undervoltage Lockout
      3. 6.3.3 Thermal Shutdown Protection
    4. 6.4 Device Functional Modes
      1. 6.4.1 Soft Start
      2. 6.4.2 Normal Mode and Skip Mode Operation
      3. 6.4.3 Short-Circuit Protection
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 USB On the Go Circuitry
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
          1. 7.2.1.2.1 Capacitor Selection
        3. 7.2.1.3 Application Curves
      2. 7.2.2 System Example
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Receiving Notification of Documentation Updates
    2. 8.2 Support Resources
    3. 8.3 Trademarks
    4. 8.4 Electrostatic Discharge Caution
    5. 8.5 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information
7.2.1.2.1 Capacitor Selection

For minimum output voltage ripple, the output capacitor (COUT) must be a surface-mount ceramic capacitor. Tantalum capacitors generally have a higher effective series resistance (ESR) and can contribute to higher output voltage ripple. Leaded capacitors also increase ripple due to the higher inductance of the package. To achieve the best operation with low input voltage and high load current, the input and flying capacitors (CIN and CF, respectively) must also be surface-mount ceramic types.

TPS60150 CapacitorsFigure 7-2 Capacitors

Generally, CFLY can be calculated using Equation 2.

Equation 2. TPS60150

Both equation must be the same, TPS60150

Equation 3. TPS60150

If ILOAD = 140mA, f = 1.5MHz, and ΔVCFLY = 100mV, the minimum value of the flying capacitor must be 1 μF.

Output capacitance, COUT, is also strongly related to output ripple voltage and loop stability,

Equation 4. TPS60150

The minimum output capacitance for all output levels is 2.2μF due to control stability. Larger ceramic capacitors or low ESR capacitors can be used to lower the output ripple voltage.

Table 7-1 Suggested Capacitors (Input, Output, and Flying Capacitor)
VALUEDIELECTRIC MATERIALPACKAGE SIZERATED VOLTAGE
4.7μFX5R or X7R060310V
2.2μFX5R or X7R060310V

The efficiency of the charge pump regulator varies with the output voltage, the applied input voltage and the load current.

Use Equation 5 and Equation 6 to calculate the approximate efficiency in normal operating mode is given by:

Equation 5. TPS60150
Equation 6. TPS60150