TIDUEP0 May   2020

 

  1.    Description
  2.    Resources
  3.    Features
  4.    Applications
  5. 1Design Images
  6. 2System Description
    1. 2.1 Key System Specifications
  7. 3System Overview
    1. 3.1 Block Diagram
    2. 3.2 Design Considerations
      1. 3.2.1 Small Compact Size
      2. 3.2.2 Transformer less Solution
    3. 3.3 Highlighted Products
      1. 3.3.1  TPD4E05U06 4-Channel Ultra-Low-Capacitance IEC ESD Protection Diode
      2. 3.3.2  TPD2EUSB30 2-Channel ESD Solution for SuperSpeed USB 3.0 Interface
      3. 3.3.3  2.3.3 HD3SS3220 10Gbps USB 3.1 USB Type-C 2:1 MUX With DRP Controller
      4. 3.3.4  TPS54218 2.95V to 6V Input, 2A Synchronous Step-Down SWIFT™ Converter
      5. 3.3.5  TPS54318 2.95V to 6V Input, 3A Synchronous Step-Down SWIFT™ Converter
      6. 3.3.6  CSD19538Q3A 100V, N ch NexFET MOSFET™, single SON3x3, 49mOhm
      7. 3.3.7  LM3488 2.97V to 40V Wide Vin Low-Side N-Channel Controller for Switching Regulators
      8. 3.3.8  TPS61178 20-V Fully Integrated Sync Boost with Load Disconnect
      9. 3.3.9  LMZM23601 36-V, 1-A Step-Down DC-DC Power Module in 3.8-mm × 3-mm Package
      10. 3.3.10 TPS7A39 Dual, 150mA, Wide-Vin, Positive and Negative Low-Dropout (LDO) Voltage Regulator
      11. 3.3.11 TPS74201 Single-output 1.5-A LDO regulator, adjustable (0.8V to 3.3V), any or no cap, programmable soft start
      12. 3.3.12 LP5910 300-mA low-noise low-IQ low-dropout (LDO) linear regulator
      13. 3.3.13 LP5907 250-mA ultra-low-noise low-IQ low-dropout (LDO) linear
      14. 3.3.14 INA231 28V, 16-bit, i2c output current/voltage/power monitor w/alert in wcsp
    4. 3.4 System Design Theory
      1. 3.4.1 Input Section
      2. 3.4.2 Designing of SEPIC based High Voltage Supply
        1. 3.4.2.1  Basic Operation Principle of SEPIC Converter
        2. 3.4.2.2  Design of Dual SEPIC Supply using uncoupled inductors
        3. 3.4.2.3  Duty Cycle
        4. 3.4.2.4  Inductor Selection
        5. 3.4.2.5  Power MOSFET Selection
        6. 3.4.2.6  Output Diode Selection
        7. 3.4.2.7  Coupling Capacitor Selection
        8. 3.4.2.8  Output Capacitor Selection
        9. 3.4.2.9  Input Capacitor Selection
        10. 3.4.2.10 Programming the Output Voltage
      3. 3.4.3 Designing the Low Voltage Power Supply
      4. 3.4.4 Designing the TPS54218 through Webench Power Designer
      5. 3.4.5 ± 5V Transmit Supply Generation
      6. 3.4.6 System Clock Synchronization
      7. 3.4.7 Power and data output connector
      8. 3.4.8 System Current and Power Monitoring
  8. 4Hardware, Software, Testing Requirements, and Test Results
    1. 4.1 Testing and Results
      1. 4.1.1 Test Setup
      2. 4.1.2 Test Results
        1. 4.1.2.1 High Voltage Power Supply
        2. 4.1.2.2 Output Ripple Measurement
        3. 4.1.2.3 Load Transient Test
        4. 4.1.2.4 Noise Measurement
        5. 4.1.2.5 Thermal Performance
        6. 4.1.2.6 Low Voltage Power Supply
          1. 4.1.2.6.1 Thermal Performance
          2. 4.1.2.6.2 FX3 Supply
  9. 5Layout Guidelines
    1. 5.1 High-Voltage Supply Layout
    2. 5.2 USB Section Layout Guidelines
  10. 6Design Files
    1. 6.1 Schematics
    2. 6.2 Bill of Materials
    3. 6.3 PCB Layout Recommendations
      1. 6.3.1 Layout Prints
    4. 6.4 Altium Project
    5. 6.5 Gerber Files
    6. 6.6 Assembly Drawings
  11. 7Software Files
  12. 8Related Documentation
    1. 8.1 Trademarks
    2. 8.2 Third-Party Products Disclaimer
  13. 9About the Author

3.3.9 LMZM23601 36-V, 1-A Step-Down DC-DC Power Module in 3.8-mm × 3-mm Package

The LMZM23601 integrated-inductor power module is specifically designed for space-constrained industrial applications. It is available in two fixed output voltage options of 5-V and 3.3-V, and an adjustable (ADJ) output voltage option supporting a 1.2-V to 15-V range. The LMZM23601 has an input voltage range of 4-V to 36-V and can deliver up to 1000-mA of output current. This power module is extremely easy to use, requiring only 2 external components for a 5-V or 3.3-V output design. All aspects of the LMZM23601 are optimized for performance driven and low EMI industrial applications with space-constrained needs. An open-drain, Power-Good output provides a true indication of the system status and negates the requirement for an additional supervisory component, saving cost and board space. Seamless transition between PWM and PFM modes along with a no-load supply current of only 28 µA ensures high efficiency and superior transient response for the entire load-current range. For easy output current scaling the LMZM23601 is pin-to-pin compatible with the 500-mA output current capable LMZM23600.
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