Rainbow Electronics MAX17497B User Manual

Preliminary, General description, Benefits and features

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Table of contents

Document Outline

General Description
Benefits and Features
Applications
Absolute Maximum Ratings
Typical Operating Characteristics
Pin Configuration
Pin Description
Detailed Description
- Input Voltage Range
- Linear Regulator (VCC)
- Configuring the Power Stage (LXF)
- Maximum Duty Cycle
Block Diagram
- RESETN Power-Good Signal
- Sequencing
- Soft-Start
- Spread-Spectrum Factory Option
Applications Information
- Startup Voltage and Input Overvoltage Protection Setting (EN/UVLO, OVI)
- Startup Operation
- Programming Soft-Start of Flyback/Boost Converter (SSF)
- Programming Output Voltage of Flyback/Boost Converter (SSF)
- Programming Current Limit of Flyback/Boost Converter (RLIMF)
- Programming Slope Compensation for the Flyback/Boost Converter (SCOMPF)
- Step-Down Overcurrent Protection
- Error Amplifier, Loop Compensation, andPower-Stage Design of Flyback/Boost Converter
- DCM Flyback
  - Primary Inductance Selection
  - Duty Cycle Calculation
  - Turns Ratio Calculation (Ns/Np)
  - Peak/RMS Current Calculation
  - Primary Snubber Selection
  - Output Capacitor Selection
  - Input Capacitor Selection
  - External MOSFET Selection
  - Secondary Diode Selection
  - Error-Amplifier Compensation Design
- CCM Flyback
  - Transformer Turns Ratio Calculation (K = Ns/Np)
  - Primary Inductance Calculation
  - Peak and RMS Current Calculation
  - Primary RCD Snubber Selection
  - Output Capacitor Selection
  - Input Capacitor Selection
  - External MOSFET Selection
  - Secondary Diode Selection
  - Error Amplifier Compensation Design
- DCM Boost
  - Inductance Selection
  - Peak/RMS Currents Calculation
  - Output Capacitor Selection
  - Input Capacitor Selection
  - Error Amplifier Compensation Design
  - Slope Compensation
  - Output Diode Selection
  - Internal MOSFET RMS Current Calculation
- CCM Boost
  - Inductor Selection
  - Peak/RMS Current Calculation
  - Output Capacitor Selection
  - Input Capacitor Selection
  - Error Amplifier-Compensation Design
  - Slope-Compensation Ramp
  - Output Diodes Selection
  - Internal MOSFET RMS Current Calculation
- Thermal Considerations
- Layout, Grounding, and Bypassing
Typical Application Circuit
Ordering Information
Chip Information
Package Information
Revision History
31.pdf
- General Description
- Benefits and Features
- Applications
- Absolute Maximum Ratings
- Typical Operating Characteristics
- Pin Configuration
- Pin Description
- Detailed Description
  - Input Voltage Range
  - Linear Regulator (VCC)
  - Configuring the Power Stage (LXF)
  - Maximum Duty Cycle
- Block Diagram
  - RESETN Power-Good Signal
  - Sequencing
  - Soft-Start
  - Spread-Spectrum Factory Option
- Applications Information
  - Startup Voltage and Input Overvoltage Protection Setting (EN/UVLO, OVI)
  - Startup Operation
  - Programming Soft-Start of Flyback/Boost Converter (SSF)
  - Programming Output Voltage of Flyback/Boost Converter (SSF)
  - Programming Current Limit of Flyback/Boost Converter (RLIMF)
  - Programming Slope Compensation for the Flyback/Boost Converter (SCOMPF)
  - Step-Down Overcurrent Protection
  - Error Amplifier, Loop Compensation, andPower-Stage Design of Flyback/Boost Converter
  - DCM Flyback
    - Primary Inductance Selection
    - Duty Cycle Calculation
    - Turns Ratio Calculation (Ns/Np)
    - Peak/RMS Current Calculation
    - Primary Snubber Selection
    - Output Capacitor Selection
    - Input Capacitor Selection
    - External MOSFET Selection
    - Secondary Diode Selection
    - Error-Amplifier Compensation Design
  - CCM Flyback
    - Transformer Turns Ratio Calculation (K = Ns/Np)
    - Primary Inductance Calculation
    - Peak and RMS Current Calculation
    - Primary RCD Snubber Selection
    - Output Capacitor Selection
    - Input Capacitor Selection
    - External MOSFET Selection
    - Secondary Diode Selection
    - Error Amplifier Compensation Design
  - DCM Boost
    - Inductance Selection
    - Peak/RMS Currents Calculation
    - Output Capacitor Selection
    - Input Capacitor Selection
    - Error Amplifier Compensation Design
    - Slope Compensation
    - Output Diode Selection
    - Internal MOSFET RMS Current Calculation
  - CCM Boost
    - Inductor Selection
    - Peak/RMS Current Calculation
    - Output Capacitor Selection
    - Input Capacitor Selection
    - Error Amplifier-Compensation Design
    - Slope-Compensation Ramp
    - Output Diodes Selection
    - Internal MOSFET RMS Current Calculation
  - Thermal Considerations
  - Layout, Grounding, and Bypassing
- Typical Application Circuit
- Ordering Information
- Chip Information
- Package Information
- Revision History