Infineon XDPL8221 Manuals

Infineon XDPL8221 Manuals

Manuals and User Guides for Infineon XDPL8221. We have 1 Infineon XDPL8221 manual available for free PDF download: Step-By-Step Manual

Infineon XDPL8221 Step-By-Step Manual

Infineon XDPL8221 Step-By-Step Manual (61 pages)

digital PFC + flyback controller IC

Brand: Infineon | Category: Controller | Size: 2.75 MB

Table of Contents

Table of Contents

1
About this Document

1
1 Introduction

3
- Product Highlights
  3
- Design Features
  3
- Target Applications
  3
- Pin Configuration and Description
  4
- System Specification of a 100 W Driver for LED Lighting Applications
  6
- Schematic
  7
- Bridge Rectifier
  8
- Design PFC Boost Converter
  8
- Main PFC Boost Inductor
  8
- PFC Boost Diode
  11
- PFC Power MOSFET
  13
- PFC MOSFET Gate Driver
  13
- PFC CS and ZCD
  14
- PFC Output Voltage Sense
  16
- PFC Output Capacitor
  18
- PFC Multi-Mode Control
  18
- PFC Start-Up and Steady-State Control
  20
- Input Voltage Sensing
  21
- PFC Protection Features
  22
- Bus Voltage Protection
  23
- Input Voltage Protection
  25
- Over-Current Protection
  25
- Soft-Start Failure
  26
- CCM Protection
  26
- Designing the Flyback Converter
  26
- Designing the Flyback Transformer
  27
- Transformer Turns Ratio
  27
- Primary Magnetizing Inductance
  28
- Flyback Transformer Winding Turns
  30
- Flyback Primary Power MOSFET
  33
- Flyback MOSFET Gate Driver
  34
- Flyback Primary Snubber
  34
- Flyback Secondary Rectifier Diode
  36
- Flyback Secondary Snubber
  37
- Flyback Secondary Output Capacitor
  37
- Flyback ZCD Divider
  38
- Flyback CS Resistor
  39
- Flyback Operating Window
  40
- Flyback Multi-Mode Control
  42
- Flyback Start-Up Control
  43
- Flyback Protection Features
  45
- Flyback Primary Over-Current Protection
  45
- Flyback Output Under-Voltage Protection
  46
- Flyback Output Over-Voltage Protection
  46
- Flyback Output Over-Current Protection
  47
- Flyback Output Over-Power Protection
  47
- Flyback CCM Protection
  47
- Soft-Start Failure
  48
- Other Flyback Protections
  48
- Design the Power Supply for XDPL8221
  48
- Design the Bleeder
  50
- Design the Adaptive Temperature Protection
  52
- Design the Dimming Interface
  53
- UART Interface
  55
- PCB Layout Guidelines
  55
- Star Connection of Grounding
  55
- Filtering Capacitors of XDPL8221
  56
- PFC Voltage Sense Circuit
  56
- Minimum Current Loop
  56
- Other Layout Considerations
  56
3 Configuration Set-Up and Procedures

58
- Design Parameters
  58
- XDPL8221 Configuration
  58
References

59
Revision History

60

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