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AS1860

GreenEdge™ 60/90W PoE PD Controller with HV Isolation, Quad DC-DC Outputs, I2C

Features Download Datasheet PDF

          • PoE PD Controller

            • Fully Integrated 60/90W PD controller
            • Backwards compatible with Type 1 and Type 2 IEEE® 802.3af/at Compliant PD
            • 60/90W power up can be controlled by PSE or AS1860
            • AS1860 will control safe 60/90W delivery from "Dumb"sources
            • 4-pair power detection & secondary side logic notification
            • Automatic Type 1, Type 2 & 60W PoE detection in HW & I2C Modes
            • Low Resistance PD Power FET Switch (0.5Ω typical)
          • Primary-Side DC-DC Controller

            • High-efficiency DC-DC Controller with Digital Optimization
            • Primary-Secondary High-voltage integrated Digital Isolation
            • Programmable Primary Clock Frequency
            • Local-power operation down to 9.5V
          • PoE PD ControllerSecondary-Side Power Outputs

            • Programmable PWM Frequencies synched to External Clock
            • Output #1: Sync Controller with programmable power-FET timing for high efficiency at both light and full load
            • Outputs #2 & #3: Buck Regulators w/2A FETs
            • l Output #4: DC-DC Controller for Buck, Boost, or LED Boost platform applications
          • Power Management

            • Hardware programmable start-up power sequencing
            • Primary-side power monitoring & control from Secondary-side
            • Individual output Power-Good management
            • Voltage margining for each output
            • Primary GPIO/ADC controlled via Secondary GPIO or I2C
            • 5V µC-compatible with interrupt on alarm services
            • Programmable watchdog timer
          • EMC Compliance and Protection

            • Slew-rate-controlled power drivers
            • Multi-phased PWM clocking, with External Sync clock option
            • Optional spread-spectrum clocking available for all PWMs
            • Over-current, Under/Over-voltage and Short-circuit Protection
            • High-temperature warning and shutdown
            • Meets IEC 61000-4-2/3/4/5/6, IEC60747, IEC 60950, DIN EN60747-5-2 (VDE0884), & UL1577 requirements for EMC compliance and basic isolation to 2120 VDC (1500 VRMS)
            • 100V Process for PoE transient voltage robustness

Applications

  • Voice-over-IP (VoIP) phones

  • Wireless LAN & WiMAX access points (WAP)

  • Pan, Tilt, Zoom (PTZ) Cameras, IP cameras

  • Thin-client and notebook computers

  • Fiber-to-the-home (FTTH) terminals

  • Point-of-sale (PoS) terminals, RFID readers

Key Electrical Specifications

Vin(Min) Vin(Max) PoE PD Support Control  Topology Number of Output Rails High Voltage Isolation Package
42V 57V 802.3 60W HW, SW Mode I2C Flyback 4 Integrated QFN-9x9-64L-0.9

 

Typical Application Diagram

AS1860

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