MAXREFDES31#

The MAXREFDES31# is a Pasadena MAXREFDES31 reference design. The reference design features the MAX5969B and MAX5974A. The MAX5969B controller is fully compliant with the IEEE® 802.3af/at standard in a power-over-Ethernet (PoE) system. The device can also be powered from a wall adapter (WAD). The WAD operates with higher priority than PoE which is controlled by the MAX5969B. The MAX5974A controls 40V to 57V input-voltage, current-mode PWM converters and provides frequency foldback. Using these devices, this reference design is IEEE 802.3af/at compliant. It is also a high-performance, compact and cost-effective solution for a PD supporting power up to Class 4 power level. Typical applications include security cameras, wireless access points and point of sale terminals.

• Tight line regulation
• Low ripple
• Excellent load transient response
• High efficiency
• Security cameras; Wireless access points; Point of sale terminals

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party