Rainbow Electronics MAX17497B User Manual

Preliminary, General description, Benefits and features

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 OvervoltageProtection Setting (EN/UVLO, OVI)
- Startup Operation
- Programming Soft-Start ofFlyback/Boost Converter (SSF)
- Programming Output Voltage ofFlyback/Boost Converter (SSF)
- Programming Current Limit ofFlyback/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 OvervoltageProtection Setting (EN/UVLO, OVI)
  - Startup Operation
  - Programming Soft-Start ofFlyback/Boost Converter (SSF)
  - Programming Output Voltage ofFlyback/Boost Converter (SSF)
  - Programming Current Limit ofFlyback/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