X80000/X80001
New Industry Features
–
–
–
–
–
Smart Power PlugTM
Programmable Power Sequencing modes
Battery backup mode
Programmable hardshort retry
Programmable Overcurrent
Five power good signals
Penta-Power Sequence Controller
with Hot Swap
FEATURES
APPLICATIONS
• Integrates Three Major Functions
— Smart Power Plug Communications
— Programmable Power Sequencing
— Programmable Hot Swap Controller
• Smart Power PlugTM
— Intelligent Board insertion allows verification of board and
power supply resources prior to system insertion.
— Fault detection register records the cause of the faults
— Soft extraction
— Soft Re-insertion
— Remote Gate Shutdown/Turn On
— Power ID/Manufacturing ID memory (2kb of EEPROM)
• Programmable Power Sequencing
— Sequence up to 5 DC/DC converters.
— Four independent voltage enable pins
— Four programmable time delay circuits
— Soft Power Sequencing - restart sequence without power
cycling.
• Hot Swap Controller
— Programmable overvoltage and undervoltage protection
— Undervoltage lockout for battery/redundant supplies
— Programmable Slew Rate for External FET Gate Control
— Electronic circuit breaker - Overcurrent Detection and
Gate Shut-off
— Programmable overcurrent limit during Insertion
— Programmable hardshort retry with retry failure flag
— Typically operates from -30V to -80V. Tolerates transients
to -200V (limited by external components)
• Available packages
— 32-lead Quad No-Lead Frame (QFN)
• -48V Hot Swap Power Backplane/Distribution Central
Office, Ethernet for VOIP
• Card Insertion Detection
• Power Sequencing DC-DC/Power Bricks
• IP Phone Applications
• Databus Power Interfacing
• Custom Industrial Power Backplanes
• Distributed Power Systems
DESCRIPTION
The X80000 contains three major functions: a power
communications controller, a power sequencing controller, and a
hotswap controller.
The power communications controller allows smart power
supply control via the backplane using the SMBus protocol.
The system can check for voltage, current, and manufacturing ID compliance before board insertion. The power
distribution network can monitor the status of the negative
voltage supply, DC voltage supplies, and hardshort events by
accessing the Fault Detection Register and General Purpose
EEPROM of the device. Each device has a unique slave address
for identification.
The power sequencer controller time sequences up to five DCDC modules. The
X80000 allows for various hardwired
configurations, either parallel or relay sequencing modes. The
power good, enable and voltage good signals provide for
flexible DC-DC timing configurations. Each voltage enable signal
has a programmable delay. In addition, the voltage good signals
can be monitored remotely via the fault detection register (thru
the SMBus).
TYPICAL APPLICATION
BackPlane
DC-DC
Module
1
X80000
X80001
SCL
SDA
Insert
Control
ON/OFF
SCL
SDA
OptoIsolation
DC-DC
Module
3
ON/OFF
DC-DC
Module
4
ON/OFF
MRH
PWRGD
V1GOOD
V2GOOD
V3GOOD
-48V
RTN
R5
30k
1%
ON/OFF
DC-DC
Module
2
V1
R4
182k
1%
V2
VUV/OV OV=71V
UV=37V
VDD
EN1
EN2
EN3
V3
VEE SENSE GATE DRAIN
12V
R6
10k
1%
0.1uF
4.7V
100
V4
100K
Rs
-48V
0.02Ω
5%
REV 2.9 12/03/02
Q1
IRFR120
www.xicor.com
Characteristics subject to change without notice
1 of 35
