Description
The RD7 reference design board is an example of a very low cost production worthy DC input standby power supply design using the TOPSwitch-II family of Three-terminal Off-line PWM switchers. The reference design board is intended to help TOPSwitch-II users quickly develop their products. It provides a basic design that can be easily modified to fit a particular application.

Product Highlights
Low Cost Production Worthy Reference Design
• Up to 3.5 W of output power
• Meets Blue Angel requirements (5 W)
• Single sided board
• Low cost through-hole components
• Fully assembled and tested
• Easy to evaluate and modify
• Extensive performance data
• Light weight - no heat sink required for TOPSwitch-II
• Non-isolated +12 V output option

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

Designed for World Wide Operation
• Designed for IEC/UL safety requirements
• Designed for wide range of input voltage

Typical Applications
• Desktop PC stand-by power supply (PS98, ATX, NLX,
   SFX, Micro ATX)
• Consumer stand-by supply (e.g. TV, VCR, DVD)