This reference design implements a Power-over-Ethernet (PoE) power device (PD) active clamp forward converter with 15-V and 3.3-A output. A TPS23730 PD with integrated pulse-width modulator (PWM) controller provides all the necessary functions to implement the PoE PD control and the PWM control for the active-clamp forward converter. This design uses secondary-side regulation (SSR) with an optocoupler feedback.

• IEEE802.3bt Type 3 compliant PoE PD
• Integrated PWM controller for flyback or active clamp forward configuration
• Frequency dithering for EMI reduction
• Soft-start control with advanced start-up and hiccup mode overload protection
• Soft-stop shutdown
• Optional adapter input

• IP network camera
• WLAN, Wi-Fi® access point
• Barcode reader

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