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AS1860 Datasheet(PDF) 1 Page - List of Unclassifed Manufacturers |
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AS1860 Datasheet(HTML) 1 Page - List of Unclassifed Manufacturers |
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1 / 51 page  Akros Silicon, Inc. 6399 San Ignacio Avenue, Suite 250, San Jose, CA 95119 USA 408.746.9000 www.AkrosSilicon.com GENERAL DESCRIPTION The AS1860 integrates Akros GreenEdge™ Isolation technology with next generation Power-over-Ethernet (PoE) PD and integrated isolated high speed digital communication to deliver up to 90W to an isolated secondary side comprising of four independent outputs. Delivering 90W enables a new range of PoE PD capabilities and solutions which greatly expands the markets for PoE. The AS1860’s 90W capability is fully backwards compatible with Type 1 (IEEE® 802.3af) and Type 2 (IEEE® 802.3at) compliant PD. This is integrated with high-voltage isolation and quad-output digital power DC-DC converters – resulting in a complete PoE & Power management solution in a single device with minimal external components. In addition to enabling digital PoE power conversion, Akros GreenEdge ™ isolation enables direct digital management of both isolated Primary power and Secondary system power for real time end-to-end Green Power application capabilities. TYPICAL 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 SIMPLIFIED APPLICATION DIAGRAM FEATURES 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, Type2 & 60W PoE detection in HW & I2C Modes Low Resistance PD Power FET Switch (0.5 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 Secondary‐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 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 AS1860 — 60W/90W PoE PD Controllers with HV Isolation and Quad DC-DC Outputs |
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