Datasheet > LTC4287

LTC4287

更新时间： 2024-04-09 18:59:32

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
77页	2749K
描述
High Power Positive Hot Swap Controller with Power Monitor

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LTC4287 数据手册

Data Sheet

LTC4287

High Power Positive Hot Swap Controller with Power Monitor

FEATURES

GENERAL DESCRIPTION

► Drives two gates for high power applications

► Wide input supply voltage range: 6.5 V to 80 V

► Optimizes MOSFET SOA with multimode start-up sequencing

and operation

► Monitors currents, voltages, power, and energy with the ADC

► Limits MOSFET temperature for overstress protection

► Adjustable, 6.6% accurate (5 mV) current limit with foldback

The LTC4287 is an integrated solution for hot swap applications

that allows a board to be safely inserted and removed from a live

backplane. The dual-gate drivers coupled with configurable multi-

mode startup sequencing and operation optimize the metal-oxide

semiconductor field-effect transistor (MOSFET) safe operating area

(SOA) for a variety of power levels. The circuit breaker timer limits

the MOSFET temperature for reliable protection against overstress.

The SMBus 3.1 interface, PMBus command structure, and on-

board analog-to-digital converters (ADCs) with selectable resolution

and speed allow monitoring of board current, voltage, power, ener-

gy, temperature, and fault status. An optional external, electrically

erasable programmable read only memory (EEPROM) can be used

for part configuration and provide BlackBox capturing of past fault

conditions.

► BlackBox capturing and configuration using an optional external

EEPROM

► SMBus 3.1 interface and PMBus-compliant command structure

► Parallelable controllers for high current levels

► Minimum and maximum ADC measurements logging with alerts

► Available in 48(39)-lead plastic QFN (7 mm × 7 mm) package

► Configurable current foldback

The LTC4287 has additional features to respond to input undervol-

tages and overvoltages, to interrupt the host when a fault has oc-

curred, to notify when the output power is good, to detect insertion

of a board, to turn off the MOSFET if an external supply monitor

fails to indicate power-good within a timeout period, and to auto

reboot after a programmable delay following a host commanded

turn-off.

APPLICATIONS

► High availability server backplane systems

► 12 V/24 V/48 V/54 V distributed power systems

► Industrial

TYPICAL APPLICATION

Figure 1. 54 V, 3900 W Hot-Swap Controller (Parallel Mode)

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable "as is". However, no responsibility is assumed by Analog

Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to

change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective owners.

DOCUMENT FEEDBACK

TECHNICAL SUPPORT

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