SLVSHN0A September   2024  – October 2025 TPS548B23

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  D-CAP4 Control
      2. 6.3.2  Internal VCC LDO and Using External Bias On the VCC Pin
        1. 6.3.2.1 Powering the Device From a Single Bus
        2. 6.3.2.2 Powering the Device From a Split-Rail Configuration
      3. 6.3.3  Multifunction Configuration (CFG1-5) Pins
        1. 6.3.3.1 Multifunction Configuration (CFG1-2) Pins (Internal Feedback)
        2. 6.3.3.2 Multifunction Configuration (CFG1-2) Pins (External Feedback)
        3. 6.3.3.3 Multifunction Configuration (CFG3-5) Pins
      4. 6.3.4  Enable
      5. 6.3.5  Soft Start
      6. 6.3.6  Power Good
      7. 6.3.7  Overvoltage and Undervoltage Protection
      8. 6.3.8  Output Voltage Setting (External Feedback Configuration)
      9. 6.3.9  Remote Sense
      10. 6.3.10 Low-side MOSFET Zero-Crossing
      11. 6.3.11 Current Sense and Positive Overcurrent Protection
      12. 6.3.12 Low-side MOSFET Negative Current Limit
      13. 6.3.13 Output Voltage Discharge
      14. 6.3.14 UVLO Protection
      15. 6.3.15 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Auto-Skip (PFM) Eco-mode Light Load Operation
      2. 6.4.2 Forced Continuous-Conduction Mode
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Output Voltage Setting Point
        2. 7.2.2.2 Choose the Switching Frequency
        3. 7.2.2.3 Choose the Inductor
        4. 7.2.2.4 Choose the Output Capacitor
        5. 7.2.2.5 Choose the Input Capacitors (CIN)
        6. 7.2.2.6 VCC Bypass Capacitor
        7. 7.2.2.7 BOOT Capacitor
        8. 7.2.2.8 PG Pullup Resistor
      3. 7.2.3 Application Curves
    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 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 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

5.6 Typical Characteristics

TPS548B23 Efficiency with VOUT ≥ 1.8V
VIN=12V VCC = Internal FSW = 600kHz
LOUT = 550nH LDCR = 1.4mΩ FCCM
Figure 5-1 Efficiency with VOUT ≥ 1.8V
TPS548B23 Efficiency vs FSW with VOUT = 3.3V
VIN=12V VCC = Internal VOUT = 3.3V
LOUT = 550nH LDCR = 1.4mΩ FCCM
Figure 5-3 Efficiency vs FSW with VOUT = 3.3V
TPS548B23 Efficiency vs VCC Bias with VOUT = 3.3V
VIN=12V VOUT = 3.3V FSW = 600kHz
LOUT = 550nH LDCR = 1.4mΩ FCCM
Figure 5-5 Efficiency vs VCC Bias with VOUT = 3.3V
TPS548B23 IQ(VIN) vs Junction Temperature
VIN = 12V VEN = 2V Internal VCC LDO
VFB = VINTREF + 50mV
Figure 5-7 IQ(VIN) vs Junction Temperature
TPS548B23 VCC LDO vs Junction Temperature
VIN = 12V IVCC = 2mA
Figure 5-9 VCC LDO vs Junction Temperature
TPS548B23 VIN Pin Undervoltage Lockout vs Junction Temperature
VIN = 12V
Figure 5-11 VIN Pin Undervoltage Lockout vs Junction Temperature
TPS548B23 VEN Pin Thresholds vs Junction Temperature
VIN = 12V
Figure 5-13 VEN Pin Thresholds vs Junction Temperature
TPS548B23 Switching Frequency vs Input Voltage
TAMB = 25°C FSW = 1200kHz IOUT = 5A
FCCM
Figure 5-15 Switching Frequency vs Input Voltage
TPS548B23 Switching Frequency vs Output Current
TAMB = 25°C FSW = 1200kHz VIN = 12V
PFM
Figure 5-17 Switching Frequency vs Output Current
TPS548B23 Switching Frequency vs Output Current
TAMB = 25°C FSW = 800kHz VIN = 12V
FCCM
Figure 5-19 Switching Frequency vs Output Current
TPS548B23 Switching Frequency vs Input Voltage
TAMB = 25°C FSW = 600kHz IOUT = 5A
FCCM
Figure 5-21 Switching Frequency vs Input Voltage
TPS548B23 Switching Frequency vs Output Current
TAMB = 25°C FSW = 600kHz VIN = 12V
PFM
Figure 5-23 Switching Frequency vs Output Current
TPS548B23 Switching Frequency vs Junction Temperature
VIN = 12V FSW = 800kHz IOUT = 0A
FCCM
Figure 5-25 Switching Frequency vs Junction Temperature
TPS548B23 Switching Frequency vs Junction Temperature
VIN = 12V FSW = 1200kHz IOUT = 0A
FCCM
Figure 5-27 Switching Frequency vs Junction Temperature
TPS548B23 RDSON(LS) vs Junction Temperature
VIN = 12V
Figure 5-29 RDSON(LS) vs Junction Temperature
TPS548B23 Low-Side Valley Current Limit Accuracy (External) vs Junction Temperature
VIN = 12V
Figure 5-31 Low-Side Valley Current Limit Accuracy (External) vs Junction Temperature
TPS548B23 Efficiency with VOUT ≤ 1.8V
VIN=12V VCC = Internal FSW = 600kHz
LOUT = 160nH LDCR = 0.75mΩ FCCM
Figure 5-2 Efficiency with VOUT ≤ 1.8V
TPS548B23 Efficiency vs FSW with VOUT = 1.8V
VIN=12V VCC = Internal VOUT = 1.8V
LOUT = 160nH LDCR = 0.75mΩ FCCM
Figure 5-4 Efficiency vs FSW with VOUT = 1.8V
TPS548B23 Efficiency vs VCC Bias with VOUT = 1.8V
VIN=12V VOUT = 1.8V FSW = 600kHz
LOUT = 160nH LDCR = 0.75mΩ FCCM
Figure 5-6 Efficiency vs VCC Bias with VOUT = 1.8V
TPS548B23 ISD(VIN) vs Junction Temperature
VIN = 12V VEN = 0V Internal VCC LDO
Figure 5-8 ISD(VIN) vs Junction Temperature
TPS548B23 VCC Pin Undervoltage Lockout vs Junction Temperature
VIN = 12V
Figure 5-10 VCC Pin Undervoltage Lockout vs Junction Temperature
TPS548B23 VFB_REG vs Junction Temperature
VIN = 12V
Figure 5-12 VFB_REG vs Junction Temperature
TPS548B23 Switching Frequency vs Voltage Conversion Ratio
TAMB = 25°C FCCM IOUT = 5A
Voltage conversion ratio = V O U T V I N
Figure 5-14 Switching Frequency vs Voltage Conversion Ratio
TPS548B23 Switching Frequency vs Output Current
TAMB = 25°C FSW = 1200kHz VIN = 12V
FCCM
Figure 5-16 Switching Frequency vs Output Current
TPS548B23 Switching Frequency vs Input Voltage
TAMB = 25°C FSW = 800kHz IOUT = 5A
FCCM
Figure 5-18 Switching Frequency vs Input Voltage
TPS548B23 Switching Frequency vs Output Current
TAMB = 25°C FSW = 800kHz VIN = 12V
PFM
Figure 5-20 Switching Frequency vs Output Current
TPS548B23 Switching Frequency vs Output Current
TAMB = 25°C FSW = 600kHz VIN = 12V
FCCM
Figure 5-22 Switching Frequency vs Output Current
TPS548B23 Switching Frequency vs Junction Temperature
VIN = 12V FSW = 600kHz IOUT = 0A
FCCM
Figure 5-24 Switching Frequency vs Junction Temperature
TPS548B23 Switching Frequency vs Junction Temperature
VIN = 12V FSW = 1000kHz IOUT = 0A
FCCM
Figure 5-26 Switching Frequency vs Junction Temperature
TPS548B23 RDSON(HS) vs Junction Temperature
VIN = 12V
Figure 5-28 RDSON(HS) vs Junction Temperature
TPS548B23 Low-Side Valley Current Limit Accuracy (Internal) vs Junction Temperature
VIN = 12V
Figure 5-30 Low-Side Valley Current Limit Accuracy (Internal) vs Junction Temperature
TPS548B23 Low-Side Negative Overcurrent Limit vs Junction Temperature
VIN = 12V
Figure 5-32 Low-Side Negative Overcurrent Limit vs Junction Temperature