RD56F8300SMPS: Digital AC/DC Switched-Mode Power Supply Reference Design Using 56F8300 DSCs

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• Overview
• Features
• General:
• General Benefits:
• Performance:
• Communications:
• Visual Interface:
• Block Diagram
• Board
• Design Resources

Overview

This full digital power AC to DC Switched-Mode Power Supply (SMPS) system includes both digital power control and digital power management.

• The control feedback or feed-forward loop that regulates the output of the power system is directly controlled by a 56800/E DSC
• The DSC provides the digital power management function for configuration, tracking, monitoring, protection, guiding supply sequence, and communication capabilities
• This reference design is a fully digitally controlled high-frequency Switched-Mode Power Supply based on an NXP® 56F8323 device
• The primary side is the AC-DC converter with power factor correction (PFC) and on the secondary side is a full bridge DC-DC converter

Features

General:

• 500-Watt fully digital switched-mode power supply controlled by
  • A 56F8323 with power factor correction
  • A 56F8323 for secondary with phase shifting technique

General Benefits:

• Power applications become more flexible and universal
• High input power factor lowers power pollution to the power grid
• Intelligent mode management and fault supervision
• Operating status is monitored and controlled in real time
• Lower system and maintenance cost

Performance:

• Input voltage: 85 ~ 265VAC
• Input frequency: 45 ~ 65HZ
• Rating output voltage:48VDC
• Rating output power: 500W
• Switch frequency: > 100K
• Power factor > 95%
• Efficiency > 90%

Communications:

• RS232 port for communication with optoisolation

Visual Interface:

• Multi-segment LED indicators (input voltage, input current, output voltage, and output current)

Block Diagram

Board

Design Resources