Description
The RD9 is a special printed circuit board (Figure 1) designed for rapid prototyping of TinySwitch-based flyback power supplies in the 1-3 W range. Component positions and an optimized layout are provided for a complete single output power supply as shown in Figure 2. Component size and placement are identical to evaluation board RD8. The board is designed to accommodate a transformer using an EE16 core with a 10 pin bobbin (Ying Chin YC-1607 or equivalent*). In addition to the power supply circuitry, the RD9 also provides a prototyping area on the secondary side of the board for circuitry such as additional outputs or voltage and current regulators. Some typical application circuits that can be constructed using the RD9 printed circuit board can be found in the TinySwitch and RD8 data sheets, and Design Ideas DI-4 through DI-8.

Product Highlights
Unpopulated Prototyping Board
• Complete layout for construction of TinySwitch flyback supply
• Convenient prototyping area on secondary side of board
• Single-sided construction
• RD9 boards can be combined for rapid prototyping with RD8 (available separately)