AS1860 Datasheet, PDF (1/51 Pages) List of Unclassifed Manufacturers – 60W/90W PoE PD Controllers

AS1860 — 60W/90W PoE PD Controllers with HV Isolation
and Quad DC-DC Outputs
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
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
SIMPLIFIED APPLICATION DIAGRAM
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
Akros Silicon, Inc.
6399 San Ignacio Avenue, Suite 250, San Jose, CA 95119 USA
408.746.9000  www.AkrosSilicon.com