MAXREFDES113#: Isolated 24V to 12V 20W power supply

Maxim's power supply experts designed and built a series of isolated industrial power supply reference designs, each of which efficiently converts 24V to voltage rails at various power levels. Each power rail is isolated using transformers available from multiple manufacturers worldwide, making transformer selection quick and easy. Each design is tested for load and line regulation, as well as efficiency and transient performance. As with all Maxim reference designs, the Design Resources tab provides BOMs, schematics, layout files, and Gerber files. In addition, circuit boards are available for purchase; most have through-hole pins, allowing for immediate board layout and accelerating initial product development.

MAXREFDES113# is a high-efficiency flyback structure 24 V input, 12V/20W output (1.6A) power supply design. The design uses the MAX17596 peak current mode converter with flexible switching frequency. The entire circuit is mounted on a 20mm × 35mm circuit board.

characteristic

• functional isolation
• Compact and flexible
• Minimal number of external components
• Reliable operation in harsh environments
• 12V 1.6A, 20% overload current range
• ±5% output accuracy

application

• Industrial control and automation
• process controll
• PLC
• Telecommunications and datacom power supplies