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ADM1075-1ACPZ-RL7 Folha de dados(PDF) 1 Page - Analog Devices |
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ADM1075-1ACPZ-RL7 Folha de dados(HTML) 1 Page - Analog Devices |
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1 / 52 page  −48 V Hot Swap Controller and Digital Power Monitor with PMBus Interface Data Sheet ADM1075 Rev. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2011–2012 Analog Devices, Inc. All rights reserved. FEATURES Constant power foldback for FET SOA protection Precision (<1.0%) current and voltage measurement Controls inrush and faults for negative supply voltages Suitable for wide input range due to internal shunt regulator 25 mV/50 mV full-scale sense voltage Fine tune current limit to allow use of standard sense resistor Soft start inrush current limit profiling 1% accurate UVH and OV pins, 1.5% accurate UVL pin PMBus/I2C interface for control, telemetry, and fault recording 28-lead LFCSP and TSSOP −40°C to 105°C junction temperature (TJ) operating range APPLICATIONS Telecommunication and data communication equipment Central office switching −48 V distributed power systems Negative power supply control High availability servers PRODUCT HIGHLIGHTS 1. Constant Power Foldback. Maximum FET power set by a PLIM resistor divider. This eases complexity when designing to maintain FET SOA. 2. Adjustable Current Limit. The current limit is adjustable via the ISET pin allowing for the use of a standard value sense resistor. 3. 12-Bit ADC. Accurate voltage, current, and power measurements. Also enables calculation of energy consumption over time. 4. PMBus/I2C Interface. PMBus fast mode compliant interface used to read back status and data registers and set warning and fault limits. 5. Fault Recording. Latched status registers provide useful debugging infor- mation to help trace faults in high reliability systems. 6. Built-In Soft Start. Soft start capacitor controls inrush current profile with di/dt control. FUNCTIONAL BLOCK DIAGRAM FAULT TIMER FET POWER FOLDBACK CONTROL DIGITAL AND PMBUS 12-BIT ADC POWER MULTIPLIER POWER ACCUMULATOR GATE CONTROL CURRENT LIMIT DRAIN RESTART SHDN LATCH GPO1/ALERT1/CONV GPO2/ALERT2 SDAO SDAI SCL ADR ADC_AUX PWRGD SPLYGD UNDERVOLTAGE AND OVERVOLTAGE DETECTOR VCC AND REFERENCE GENERATOR VIN ADC_V VCAP UVL UVH SENSE+ GATE PLIM N-FET RSENSE RDROP DC-TO-DC CONVERTER 5V 12V 3.3V 2.8V ...etc. GND –48V RTN (0V) –48V VEE SENSE– ISET TIMER SS VEE_G VEE OV VEE ADuM1250 SDA_ISO SCL_ISO CLOAD Figure 1. |
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Descrição semelhante - ADM1075-1ACPZ-RL7 |
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