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LTC4261 Datasheet(PDF) 1 Page - Analog Devices |
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LTC4261 Datasheet(HTML) 1 Page - Analog Devices |
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1 / 82 page  LTC4284 1 Rev. B For more information www.analog.com Document Feedback TYPICAL APPLICATION FEATURES DESCRIPTION High Power Negative Voltage Hot Swap Controller with Energy Monitor The LTC®4284 negative voltage hot swap controller drives external N-channel MOSFETs to allow a board to be safely inserted and removed from a live backplane. The dual- gate, multi-mode drivers optimize the MOSFET safe oper- ating area (SOA) for a variety of power levels. The SOA timer limits MOSFET temperature rise for reliable protec- tion against overstresses. An I2C interface and onboard gear-shift ADC allow moni- toring of board current, voltage, power, energy, and fault status. An available single-wire broadcast mode simplifies the interface by eliminating two isolators. The included EEPROM provides black-box capturing and nonvolatile configuration of fault behavior. Additional features respond to input UV/OV, interrupt the host when a fault has occurred, notify when output power is good, detect insertion of a board, turn off the MOSFETs if an external supply monitor fails to indicate power good within a timeout period, and auto-reboot after a program- mable delay following a host commanded turn-off. –52V/2500W Hot Swap Controller with Telemetry Startup Behavior APPLICATIONS n Drives Two Gates for High Power Applications n Configurable Parallel, Staged Start or Single Modes n Protects MOSFET with SOA Timer n Programmable 15mV to 30mV Current Limit Sense Voltage with <3.3% Accuracy and Adjustable Foldback n 8-Bit to 16-Bit Gear-Shift ADC with 0.7% Accuracy n Monitors Voltages, Currents, Power and Energy n Nonvolatile Configuration and Fault Recording n Floating Topology for Rugged High Voltage Operation n Selectable Inrush Control: dV/dt or Current Limit n I2C/SMBus or Single-Wire Broadcast Interfaces n Min/Max ADC Measurement Logging with Alerts n Reboots on I2C Command with Programmable Delay n Adjustable Input UV/OV Thresholds and Hysteresis n 44-Pin 5mm × 8mm QFN Package n Telecom Infrastructure n –48V Distributed Power Systems n Servers and Data Centers n Power Monitors All registered trademarks and trademarks are the property of their respective owners. Protected by U.S. patents, including 8230151, 7382167, 9634480, 9634481, 10263414. 402k 1µF 5m 4 × 1k IN SERIES 0.25W EACH 0.1µF 4 4 4 2 × IPT020N10N3 PSMN7R6-100BSE 100k 10k 316k 10.2k 316k 2.2nF 2000µF 4284 TA01a 0.33m 7.68k 470nF 10.2k RTN UVH UVL OV –52V INPUT ADIN TMR VEE MODE INTVCC SENSE1+ GATE1 SENSE2– GATE2 DRAIN VZ VIN RTNS SCL SDAI SDAO ALERT# ADIO PGIO LTC4284 RTN (SHORT PIN) VEE DRNS SENSE2+ EN# UV = 43.5V UV RELEASE AT 48.5V OV = 59V OV RELEASE AT 58V VEE VEE VEE VEE SENSE1– RAMP VOUT VLOAD + – GATE1 10V/DIV 100ms/DIV 4284 TA01b GATE2 10V/DIV –52V VOUT 50V/DIV IINRUSH 1A/DIV |
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Similar Description - LTC4261 |
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