San Jose, Calif. Power Integrations extended its DPA-Switch DC-DC IC family with the 10-W DPA422, which enables designers to develop efficient power supply designs for power over ethernet (PoE) applications. Suited to IEEE802.3af Class 2 Power over Ethernet (PoE) implementations for applications including VoIP telephones, the device is rated at up to 10 W.
The DPA-Switch family devices include a monolithic 220-V MOSFET and features voltage-mode feedback control which requires no slope compensation, an internal, tight-tolerance cycle-by-cycle current limit which needs no external current sense components and output overload and loop fault 'auto-restart' protection. Other benefits include remote on/off control, low EMI, high efficiency, soft start and hysteretic thermal shutdown. The DPA422 is available in DIP-8 and SMD 8 packages.
Pricing: $0.97 in 10,000-piece quantities
Data Sheet: DPA422
Power Integrations, 408-414-9200, www.powerint.com