Description
The RD5 reference design board is an example of a very low cost production worthy power supply design using the TOPSwitch family of Three-terminal Off-line PWM Switchers from Power Integrations. It is intended to help TOPSwitch users to develop their products quickly by providing a basic design that can be easily modified to fit a particular application. In most cases, a minor change to the transformer for a different output voltage is all that is needed. Multiple output voltages are obtained just as easily. A constant current or constant power output may be implemented with the addition of a few low cost components.

Product Highlights
Low Cost Production Worthy Reference Design
• Only 22 components!
• Single sided board
• Low cost thru-hole components
• Fully assembled and tested
• Easy to evaluate and modify
• Extensive performance data
• Up to 80% efficiency
• Light weight – no heat sink required for TOPSwitch-II

Fully Protected by TOPSwitch-II
• Primary safety current limit
• Output short circuit protection
• Thermal shutdown protects entire power supply

Designed for World Wide Operation
• Designed for IEC/UL safety requirements
• Meets VDE Class B EMI specifications