LTC2980 16-Channel PMBus Power System Manager Fe AT Des Cr IPTION n Sequence, Trim, Margin and Supervise 16 Power The LTC 2980 is a 16-channel Power System Manager Supplies used to sequence, trim (servo), margin, supervise, man- n Manage Faults, Monitor Telemetry and Create Fault Logs age faults, provide telemetry and create fault logs. PMBus n PMBus Compliant Command Set commands support power supply sequencing, precision n Supported by LTpowerPlay GUI point-of-load voltage adjustment and margining. DACs use n Margin or Trim Supplies to Within 0.25% of Target a proprietary soft-connect algorithm to minimize supply n Fast OV/UV Supervisors Per Channel disturbances. Supervisory functions include overvoltage n Coordinate Sequencing and Fault Management and undervoltage threshold limits for sixteen power supply Across Multiple LTC PSM Devices output channels and two power supply input channels, as n Automatic Fault Logging to Internal EEPROM well as over and under temperature limits. Programmable n Operate Autonomously without Additional Software fault responses can disable the power supplies with optional n Internal Temperature and Input Voltage Supervisors retry after a fault is detected. Faults that disable a power n Accurate Monitoring of 16 Output Voltages, Two supply can automatically trigger black box EEPROM stor- Input Voltages and Internal Die Temperature age of fault status and associated telemetry. An internal 2 n I C/SMBus Serial Interface 16-bit ADC monitors sixteen output voltages, two input n Can Be Powered from 3.3V, or 4.5V to 15V voltages, and die temperature. In addition, odd numbered n Programmable Watchdog Timer channels can be configured to measure the voltage across n Available in 144-Pin 12mm 12mm BGA Package a current sense resistor. A programmable watchdog timer monitors microprocessor activity for a stalled condition and resets the microprocessor if necessary. A single wire bus synchronizes power supplies across multiple LTC APPLICATIONs Power System Management (PSM) devices. Configura- n Computers and Network Servers tion EEPROM with ECC supports autonomous operation n Industrial Test and Measurement without additional software. n High Reliability Systems L, LT, LTC, LTM, LTpowerPlay, PolyPhase, Linear Technology and the Linear logo are n Medical Imaging registered trademarks of Analog Devices, Inc. PMBus is a trademark of SMIF, Inc. All other trademarks are the property of their respective owners. Protected by U.S. Patents including n Video 7382303, 7420359 and 7940091. TYPICAL APPLICATION Power Supply Accuracy 16-Channel PMBus Power System Manager 14 34 PARTS SOLDERED DOWN IBC 4.5V V 15V IBUS DC IN OUT 12 IN EN V IN V IN SNS 10 V OUT V IN EN DC/DC + 8 * LTC2980 MAY ALSO BE V * PWR CONVERTER POWERED DIRECTLY FROM V * DD33 V LOAD SENSE V RUN AN EXTERNAL 3.3V SUPPLY FB 6 LTC2980 4 R20 SDA PMBus V SCL DAC INTERFACE 2 R30 ALERTB R10 CONTROL 0 0.25 0.15 0.05 0.05 0.15 0.25 FAULT PWRGD V ERROR (%) OUT EN 2980 TA01b NOTE: SOME DETAILS OMITTED FOR CLARITY 2980 TA01a ONLY ONE OF 16 CHANNELS SHOWN 2980fa 1 For more information www.linear.com/LTC2980 NUMBER OF PARTS uresLTC2980 Abs OLu Te M Ax IMu M rATIN PIN CONFI ATION (Notes 1, 2, 3) TOP VIEW Supply Voltages: PIN 1 1 2 3 4 5 6 7 8 9 10 11 12 V ...................................................... 0.3V to 15V PWR A V .................................................. 0.3V to 15V IN SNS B V .................................................... 0.3V to 3.6V DD33 C V .................................................. 0.3V to 2.75V DD25 D Digital Input/Output Voltages: E ALERTB, SDA, SCL, CONTROL0, CONTROL1 ............................................ 0.3V to 5.5V F PWRGD, SHARE CLK, G WDI/RESETB, WP ....................0.3V to V + 0.3V DD33 H FAULTB00, FAULTB01, FAULTB10, J FAULTB11 ................................0.3V to V + 0.3V DD33 K ASEL0, ASEL1 ..........................0.3V to V + 0.3V DD33 L Analog Voltages: M REFP ................................................... 0.3V to 1.35V BGA PACKAGE REFM .................................................... 0.3V to 0.3V 144-LEAD (12mm 12mm 1.29mm) V ............................................. 0.3V to 6V SENSEP 7:0 T = 125C, = 32C/W, = 11C/W, = 15C/W, = 18C/W, JMAX JA JCtop JCbottom JB V ............................................. 0.3V to 6V SENSEM 7:0 WEIGHT = 1.6g, VALUES DETERMINED PER JEDEC 51-9, 51-12 V , V ............................... 0.3V to 15V OUT EN 3:0 IN EN V ............................................. 0.3V to 6V OUT EN 7:4 V ................................................. 0.3V to 6V DACP 7:0 V ............................................ 0.3V to 0.3V DACM 7:0 Operating Junction Temperature Range: LTC2980C ................................................ 0C to 70C LTC2980I ........................................... 40C to 105C Storage Temperature Range ................ 55C to 125C* Maximum Junction Temperature ........................ 125C* Maximum Solder Temperature ..............................260C *See OPERATION section of the LTC2977 data sheet for detailed EEPROM derating information for junction temperatures in excess of 105C.