SLVSE06B January   2018  – JANUARY 2019 TPSM846C24

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified Schematic
      2.      Efficiency vs Output Current
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin 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 Switching Characteristics
    7. 6.7 Typical Characteristics (VIN = 12 V)
    8. 6.8 Typical Characteristics (VIN = 5 V)
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Minimum Capacitance Requirements
      2. 7.3.2  Setting the Compensation Network
      3. 7.3.3  Transient Response
      4. 7.3.4  Setting the Output Voltage
      5. 7.3.5  Differential Remote Sense
      6. 7.3.6  Switching Frequency and Synchronization
        1. 7.3.6.1 Setting the Switching Frequency
        2. 7.3.6.2 Synchronization
          1. 7.3.6.2.1 Stand-Alone Device Synchronization
          2. 7.3.6.2.2 Paralleled Devices Synchronization
      7. 7.3.7  Prebiased Output Start-Up
      8. 7.3.8  Power-Good (PGOOD) Indicator
      9. 7.3.9  Linear Regulators BP3 and BP6
      10. 7.3.10 Parallel Application
      11. 7.3.11 Parallel Operation
      12. 7.3.12 Overtemperature Protection
      13. 7.3.13 Overcurrent Protection
      14. 7.3.14 Output Overvoltage and Undervoltage Protection
    4. 7.4 Device Functional Modes
      1. 7.4.1 Active Mode
      2. 7.4.2 Shutdown Mode
  8. 8 Application and Implementation
    1. 8.1 Typical Application
      1. 8.1.1 Design Requirements
      2. 8.1.2 Detailed Design Procedure
        1. 8.1.2.1 Custom Design With WEBENCH® Tools
        2. 8.1.2.2 Setting the Output Voltage
        3. 8.1.2.3 Input and Output Capacitance
        4. 8.1.2.4 Selecting the Compensation Components
        5. 8.1.2.5 Setting the Switching Frequency
        6. 8.1.2.6 Power Good (PGOOD)
        7. 8.1.2.7 ON/OFF Control (EN)
      3. 8.1.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Package Specifications
    4. 10.4 EMI
    5. 10.5 Mounting and Thermal Profile Recommendation
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
        1. 11.1.1.1 Custom Design With WEBENCH® Tools
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information
    1. 12.1 Tape and Reel Information

Package Options

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

7.3.3 Transient Response

The TPSM846C24 is designed to have an exceptional output voltage transient response to output current load steps. Table 2 shows the voltage deviation for several transient conditions.

Table 2. Output Voltage Transient Response

CIN = 4× 22 µF Ceramic, 2x 330 µF Electrolytic
VOUT(V) VIN(V) fSW (kHz) RCOMP CCOMP COUT VOLTAGE (1) DEVIATION (mV)
CERAMIC NON-CERAMIC (2)
0.6 5 500 499 Ω 2200 pF 4 × 47 µF 4 × 470 µF 33
500 249 Ω 4700 pF 4 × 47 µF 4 × 1000 µF 22
12 500 249 Ω 4700 pF 4 × 47 µF 4 × 470 µF 24
750 124 Ω 6800 pF 4 × 47 µF 4 × 1000 µF 18
0.8 5 500 499 Ω 2200 pF 4 × 47 µF 4 × 470 µF 37
750 124 Ω 6800 pF 4 × 47 µF 4 × 1000 µF 19
12 500 499 Ω 2200 pF 4 × 47 µF 4 × 470 µF 33
500 249 Ω 4700 pF 4 × 47 µF 4 × 1000 µF 20
1.0 5 500 665 Ω 1500 pF 4 × 47 µF 2 × 470 µF 48
500 499 Ω 2200 pF 4 × 47 µF 4 × 470 µF 38
500 249 Ω 4700 pF 4 × 47 µF 4 × 1000 µF 26
12 500 665 Ω 1500 pF 4 × 47 µF 2 × 470 µF 41
500 499 Ω 2200 pF 4 × 47 µF 4 × 470 µF 32
750 499 Ω 2200 pF 4 × 47 µF 2 × 470 µF 26
1.2 5 500 665 Ω 1500 pF 4 × 47 µF 2 × 470 µF 38
750 499 Ω 2200 pF 4 × 47 µF 2 × 470 µF 34
12 500 665 Ω 1500 pF 4 × 47 µF 2 × 470 µF 39
500 499 Ω 2200 pF 4 × 47 µF 4 × 470 µF 35
2 5 300 1.0 kΩ 1000 pF 4 × 47 µF 2 × 470 µF 50
500 665 Ω 1500 pF 4 × 47 µF 2 × 470 µF 38
12 300 1.0 kΩ 1000 pF 4 × 47 µF 2 × 470 µF 57
500 665 Ω 1500 pF 4 × 47 µF 2 × 470 µF 42
(1) 50% load step at 2.5 A/µs.
(2) The combined equivalent ESR of all non-ceramic output capacitance must be ≤ 5 mΩ.